CN113396673A - Double-disc integrated seed sowing device - Google Patents

Double-disc integrated seed sowing device Download PDF

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Publication number
CN113396673A
CN113396673A CN202110774095.2A CN202110774095A CN113396673A CN 113396673 A CN113396673 A CN 113396673A CN 202110774095 A CN202110774095 A CN 202110774095A CN 113396673 A CN113396673 A CN 113396673A
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China
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seed
bottom shell
pressure air
air chamber
chamber
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CN202110774095.2A
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CN113396673B (en
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曾山
文智强
徐卓
刘伟健
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South China Agricultural University
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South China Agricultural University
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01CPLANTING; SOWING; FERTILISING
    • A01C7/00Sowing
    • A01C7/20Parts of seeders for conducting and depositing seed

Abstract

The invention relates to the technical field of agricultural equipment, and discloses a double-disc integrated seed sowing device, which comprises a first seed sowing mechanism, a second seed sowing mechanism, a transmission assembly and a hollow shaft motor, wherein the first seed sowing mechanism is arranged on the first seed sowing mechanism; the first arranging mechanism comprises a first outer shell, a first bottom shell and a first seed sucking disc; the second seed sowing mechanism comprises a second outer shell, a second bottom shell and a second seed suction disc; the first bottom shell is connected with the second bottom shell, a motor installation position is formed between the first bottom shell and the second bottom shell, the hollow shaft motor is installed at the motor installation position, the first seed suction disc is connected with the output end of the hollow shaft motor, the transmission assembly is installed in the hollow shaft inner ring of the hollow shaft motor, one end of the transmission assembly is connected with the first seed suction disc, the other end of the transmission assembly is rotatably installed on the second bottom shell and connected with the second seed suction disc, the first outer shell is connected with the first bottom shell, and the second outer shell is connected with the second bottom shell. The beneficial effects are that: the hollow shaft motor is integrated in the seed sowing device, the volume is small, and the close planting and sowing can be realized.

Description

Double-disc integrated seed sowing device
Technical Field
The invention relates to the technical field of agricultural equipment, in particular to a double-disc integrated seed sowing device.
Background
The sowing is a basic link of vegetable planting, and the quality of the sowing affects the seedling emergence rate. With the development of modern technology, the technical level of the seeding machine is further improved. Particularly, the existing precision hole sowing seed sowing device has the advantages of saving fine seeds, no need of thinning, uniform distribution of field plants and contribution to seedling growth. Meanwhile, the effects of time saving, power saving and yield increase are achieved. Therefore, the precision hole sowing seed sowing device becomes an important component of the existing vegetable precision operation machine. In the process of continuously growing the vegetable industry, the pneumatic type precision hole sowing seed sowing device has good operation effect, stable and adjustable sowing hole distance and great market demand and economic value.
In the process of planting vegetables, part of vegetable varieties such as caraway, shallot and the like have higher planting density required by agriculture, the row spacing is about 5 x 5cm, and the conventional seed sowing device at home and abroad has larger volume and complex transmission and is difficult to realize the requirement. For example: the Chinese patent application publication No. CN109496504A discloses a double-disc high-speed pneumatic bud seed precision seed-metering device, which is more suitable for bud seeds by improving seed-metering discs, but has larger overall volume and can not meet the requirement of close planting.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a double-disc integrated seed sowing device which is simple and reasonable in structure, small in size, free of complex transmission structure and suitable for close planting.
The purpose of the invention is realized by the following technical scheme: a double-disc integrated seed sowing device comprises a first seed sowing mechanism, a second seed sowing mechanism, a transmission assembly and a hollow shaft motor; the first arranging mechanism comprises a first outer shell, a first bottom shell and a first seed sucking disc; the second seed sowing mechanism comprises a second outer shell, a second bottom shell and a second seed suction disc; the hollow shaft motor is mounted at the motor mounting position, the first seed suction disc is arranged close to the first bottom shell, the first seed suction disc is sunk into the end face of the first bottom shell and is flush with the end face of the first bottom shell, the first seed suction disc is connected with the output end of the hollow shaft motor, the second seed suction disc is arranged close to the second bottom shell, the second seed suction disc is sunk into the end face of the second bottom shell and is flush with the end face of the second bottom shell, the transmission assembly is mounted in the inner ring of the hollow shaft motor, one end of the transmission assembly is connected with the first seed suction disc, the other end of the transmission assembly is rotatably mounted in the second bottom shell and is connected with the second seed suction disc, and the first outer shell is connected with the first bottom shell, and the second outer shell is connected with the second bottom shell.
Further, the distance between the first seed suction disc and the second seed suction disc is 55-56 mm.
Further, the transmission assembly comprises an intermediate shaft member, a first mandrel, a second mandrel and a preload member; the utility model discloses a hollow shaft motor, including well intermediate shaft spare, second holding chamber, first dabber along axial slidable ground joint in the first chamber that holds, the one end that well intermediate shaft spare is located the hollow shaft inner circle of hollow shaft motor, well intermediate shaft spare is close to the second and inhales the dish is rotationally installed in the second drain pan, the both ends of well intermediate shaft spare are opened respectively and are first held the chamber and the chamber is held to the second, first dabber along axial slidable ground joint in first holding the chamber, the one end and the second of first dabber inhale the dish and be connected, the other end of first dabber is through the pretension piece and the first inner wall butt that holds the chamber, second dabber along axial slidable ground joint in the second holds the chamber, the one end and the second of second dabber inhale the dish and be connected, and its other end holds the inner wall butt in chamber through pretension piece and second.
Further, the first chamber of holding is including the path cavity and the big footpath cavity that are linked together, the path cavity is close to the setting of first kind of a kind of dish, path cavity and big footpath cavity junction are the step face, the other end of first dabber is the flange section, the one end and the step face butt of pretensioning piece, its other end and flange section butt.
Further, the intermediate shaft member includes an intermediate shaft, a first end shaft and a second end shaft; the both ends of jackshaft all have the opening, first end axle and second end axle respectively with the opening threaded connection who corresponds, the lateral surface of jackshaft has the spanner tang, the pretensioning piece is compression spring.
Further, the device also comprises a first end cover and a second end cover; the first end cover is buckled on the outer side of the first mandrel, and the second end cover is buckled on the outer side of the second mandrel.
Further, the first bottom case includes a mounting plate and a case; the utility model discloses a motor installation device, including mounting panel and casing, the top fixed connection of casing, the center of casing is equipped with motor installation through-hole, first negative pressure air chamber, negative pressure export, first positive pressure air chamber and malleation export have still been opened to the casing, first negative pressure air chamber and first positive pressure air chamber all are located the outside of motor installation through-hole, the negative pressure export is connected with first negative pressure air chamber, malleation export is connected with first positive pressure air chamber, first negative pressure air chamber's the degree of depth is the triple of its self width, first negative pressure air chamber is 1mm with first positive pressure air chamber's minimum wall thickness, casing periphery distribution installation ear.
Further, the second drain pan is equipped with motor mounting groove, bearing mounting hole, second negative-pressure air chamber, second positive-pressure air chamber and motor cable export, the motor mounting groove is located the middle part of second drain pan, the bearing mounting hole is located the middle part of motor mounting groove, second negative-pressure air chamber is located the outside of motor mounting groove, motor cable export and motor mounting groove intercommunication, the degree of depth of second negative-pressure air chamber is the triple of its self width, the minimum wall thickness of second negative-pressure air chamber and second positive-pressure air chamber is 1mm, the outside evenly distributed installation ear of second drain pan.
Further, the first outer shell comprises a seed box, a seed inlet pipe, a seed dropping opening and a seed filling chamber; the seed box is connected with the seed filling chamber through the seed inlet pipe, the inner side surface of the seed inlet pipe is a cylindrical surface concentric with the first seed suction plate, the seed falling port is arranged along a plumb bob of the seed filling chamber and extends downwards, the bottom of the seed filling chamber is a horizontal section for exposing part of seed suction holes, the horizontal section and the inner side of the seed falling port are provided with an arc section which is a cylindrical surface concentric with the first seed suction plate, and mounting lugs are distributed on the periphery of the first shell.
Further, the second housing has the same structure as the first housing, and both seed tanks are biased inward.
Further, first kind of a dish includes the quotation and inhales the hole, inhale the hole along quotation evenly distributed, inhale the hole and include 2/5 hemisphere pit and slope cylinder section, slope cylinder section and quotation axial have 45 contained angles, 2/5 hemisphere pit is close to first shell body, slope cylinder section is close to first drain pan.
Compared with the prior art, the invention has the following advantages:
1. according to the double-disk integrated seed sowing device, the hollow shaft motor is integrated in the seed sowing device by designing the structures of the first bottom shell and the second bottom shell, the whole volume is small, the seed sowing device is not restricted in arrangement, and the profiling structure of the single-row seed sowing device can be conveniently designed. The seed sowing device has an ultrathin seed sowing device structure, the vertical distance between two disc surfaces does not exceed 56mm, and the agricultural requirement of close planting of crops can be realized. The selected hollow shaft motor has the current, voltage, temperature, angle and speed closed-loop detection function, so that the accurate regulation and control of the rotating speed can be realized, and the running condition of the seed sowing device can be detected in real time. The double-disk integrated seed sowing device is also provided with a spring pre-tightening structure, so that the air pressure and the air flow loss are reduced, and the power consumption is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic of the structure of a dual-disk integrated seed meter according to the present invention;
FIG. 2 shows a schematic cross-sectional view of a dual-disk integrated seed meter according to the present invention;
FIG. 3 shows a schematic cross-sectional view of a transmission assembly according to the present invention;
FIG. 4 shows a schematic structural view of a first mandrel according to the present invention;
fig. 5 is a schematic structural view illustrating a first bottom case according to the present invention;
FIG. 6 shows an isometric view of FIG. 5;
fig. 7 is a schematic structural view illustrating a second bottom case according to the present invention;
FIG. 8 shows the bearing diagram of FIG. 7;
fig. 9 shows a schematic outer side view of a first outer shell according to the invention;
FIG. 10 shows a schematic cross-sectional view of a first outer housing according to the present invention;
FIG. 11 shows a schematic view of the construction of a seeding aperture according to the invention;
in the figure, 1, a first outer shell; 101. a seed box; 102. feeding a seed pipe; 103. dropping the seed to the seed outlet; 104. filling a chamber; 105. an inner side surface; 106. a horizontal segment; 107. a circular arc section; 2. a first bottom case; 201. mounting a plate; 202. a housing; 203. a motor mounting through hole; 204. a first negative pressure air chamber; 205. a negative pressure outlet; 206. a first positive pressure gas chamber; 207. a positive pressure outlet; 3. a first seed sucking disc; 301. a dish surface; 302. a seed suction hole; 303. a hemispherical pit; 304. a sloped cylindrical section; 4. a second outer housing; 5. a second bottom case; 501. a motor mounting groove; 502. a bearing mounting hole; 503. a second negative pressure air chamber; 504. a second positive pressure gas chamber; 505. a motor cable outlet; 6. a second seed suction disc; 7. an intermediate shaft; 8. a first end shaft; 9. a second end shaft; 10. a first mandrel; 1001. a flange section; 11. a second mandrel; 12. pre-tightening piece; 13. mounting lugs; 14. cleaning the window; 15. a hollow shaft motor; 1501. an inner ring of the hollow shaft; 16. a first end cap; 17. a second end cap; 18. a gap; 19. a spanner spigot; 20. and a bearing.
Detailed Description
The invention is further illustrated by the following figures and examples.
Example (b):
the double-disk integrated seed metering device shown in fig. 1 and 2 comprises a first seed metering mechanism, a second seed metering mechanism, a transmission assembly and a hollow shaft motor 15; the first arranging mechanism comprises a first outer shell 1, a first bottom shell 2 and a first seed sucking disc 3; the second seed metering mechanism comprises a second outer shell 4, a second bottom shell 5 and a second seed suction disc 6; the first bottom shell 2 and the second bottom shell 5 are connected through mounting lugs 13 of the first bottom shell 2 and the second bottom shell 5, a motor mounting position is formed between the first bottom shell 2 and the second bottom shell 5, the hollow shaft motor 15 is placed at the motor mounting position and is screwed with the second bottom shell 5 for fixing the hollow shaft motor 15, the first seed suction disc 3 is arranged close to the first bottom shell 2, the first seed suction disc 3 is sunk into the end surface of the first bottom shell 2 and is flush with the end surface of the first bottom shell 2, the first seed suction disc 3 is connected with the output end of the hollow shaft motor 15, the second seed suction disc 6 is arranged close to the second bottom shell 501, the second seed suction disc 6 is sunk into the end surface of the second bottom shell 5 and is flush with the end surface of the second bottom shell 5, the transmission assembly is arranged in a hollow shaft inner ring 1501 of the hollow shaft motor 15, one end of the transmission assembly is connected with the first seed suction disc 3, and the other end of the transmission assembly is rotatably arranged on the second bottom shell 2, and is connected with a second seed suction disc 6, the first outer shell 1 is connected with the first bottom shell 2 and exposes the bottom of the first seed suction disc 3, and the second outer shell 4 is connected with the second bottom shell 5 and exposes the bottom of the second seed suction disc 6. The distance between the first seed suction disc and the second seed suction disc 6 is 55-56 mm. This double-disk integrated form seed metering ware is through setting up first drain pan 2 and second drain pan 5 for hollow shaft motor 15 can install between the two, installs drive assembly again in hollow shaft inner circle 1501 of hollow shaft motor 15, drives two seed suction dish synchronous working. The hollow shaft motor 15 is integrated in the seed sowing device to form an ultrathin seed sowing device structure, the distance between two disc surfaces is only 55-56 mm, and the requirement of close planting agriculture can be met.
As shown in fig. 3 and 4, the transmission assembly includes an intermediate shaft member, a first mandrel 10, a second mandrel 10, and a preload member 12; the intermediate shaft spare is arranged in a hollow shaft inner ring 1501 of a hollow shaft motor 15, one end of the intermediate shaft spare, which is close to a second seed suction disc 6, is rotatably installed on a second bottom shell 5 through a bearing 20, the two ends of the intermediate shaft spare are respectively provided with a first accommodating cavity and a second accommodating cavity, a first mandrel 10 is connected with the first seed suction disc 3 along the axial slidable way, the other end of the first mandrel 10 is abutted against the inner wall of the first accommodating cavity through a pre-tightening piece 12, a second mandrel 11 is connected with the second accommodating cavity along the axial slidable way, one end of the second mandrel 11 is connected with the second seed suction disc 6, and the other end of the second mandrel is abutted against the inner wall of the second accommodating cavity through the pre-tightening piece 12. The first mandrel 10 and the second mandrel 11 are identical in structure and are shown in fig. 4, the two mandrels are provided with arc sections and plane sections, synchronous rotation along with the middle shaft part can be achieved, the mandrels can slide back and forth along the axial direction of the middle shaft part, and the first mandrel 10 and the second mandrel 11 can be extruded all the time to ensure that the seed sucking disc is attached to the bottom shell tightly through the arrangement of the pre-tightening part. The middle shaft piece comprises a middle shaft 7, a first end shaft 8 and a second end shaft 9; the both ends of jackshaft 7 all have the opening, first end axle 8 and second end axle 9 respectively with corresponding opening threaded connection, the lateral surface of jackshaft 7 has spanner tang 19, the installation of being convenient for. The preload piece is a compression spring. The transmission components are made of nonmagnetic materials.
The first chamber of holding is including the path cavity and the big footpath cavity that are linked together, the path cavity is close to the setting of first kind of a dish 3, path cavity and big footpath cavity junction are the step face, the other end of first mandrel 10 is flange section 1001, the one end and the step face butt of pretensioning piece, its other end and flange section 1001 butt. After the spindle is arranged, the compression spring plays a pre-tightening role, so that the seed suction disc is tightly attached to the bottom shell in the rotation process of the spindle, and a gap between the seed suction disc and the bottom shell is reduced. The structure of the second accommodating cavity is the same as that of the first accommodating cavity, and the installation mode between the second accommodating cavity and the second mandrel is the same as that between the first accommodating cavity and the first mandrel.
A first end cap 16 and a second end cap 17; the first end cover 16 is buckled on the outer side of the first mandrel 10, and the second end cover 17 is buckled on the outer side of the second mandrel 11. The two end covers are used for protecting the mandrel.
As shown in fig. 5 and 6, the first bottom case 2 includes a mounting plate 201 and a housing 202; the mounting plate 201 is fixedly connected with the top end of the shell 202, and the mounting mode can realize the lifting type mounting of the integrated seed sowing device; motor installation through-hole 203 has been opened at the center of casing 202, casing 202 has still been opened first negative pressure air chamber 204, negative pressure export 205, first positive pressure air chamber 206 and positive pressure export 207, first negative pressure air chamber 204 and first positive pressure air chamber 206 all are located the outside of motor installation through-hole 203, negative pressure export 205 is connected with first negative pressure air chamber 204, positive pressure export 207 is connected with first positive pressure air chamber 206, the degree of depth of first negative pressure air chamber 204 is the triple of its self width, first negative pressure air chamber 204 is 1mm with the minimum wall thickness of first positive pressure air chamber 206, casing 202 periphery distribution installation ear.
As shown in fig. 7 and 8, the second bottom case 5 is provided with a motor mounting groove 501, a bearing mounting hole 502, a second negative pressure air chamber 503, a second positive pressure air chamber 504 and a motor cable outlet 505, the motor mounting groove 501 is located in the middle of the second bottom case 5, the bearing mounting hole 502 is located in the middle of the motor mounting groove 501, the second negative pressure air chamber 503 is located outside the motor mounting groove 501, and the motor cable outlet 505 is communicated with the motor mounting groove 501 for leading out a motor power line and a control line. The depth of the second negative pressure air chamber 503 is three times of the width thereof, the minimum wall thickness of the second negative pressure air chamber 503 and the second positive pressure air chamber 504 is 1mm, and the mounting lugs 13 are uniformly distributed on the outer side of the second bottom case 5. The first bottom shell and the second bottom shell 5 are opposite, a motor mounting position is formed between the motor mounting through hole 203 and the motor mounting groove 501 through the mounting lug 13 and the bolt connection, and the hollow shaft motor 15 is located in the region and fixed in a screw hole of the motor mounting groove 501 through a screw. The second end shaft in the transmission assembly is arranged in the bearing mounting hole through a bearing, and the first mandrel 10 and the second mandrel 11 correspondingly penetrate through the motor mounting through hole 203 and the motor mounting groove 501 to be connected with the seed suction disc. The negative pressure air chambers and the positive pressure air chambers on the two bottom shells 5 are correspondingly communicated and matched with the seed suction discs. A gap 18 is reserved between the outer side of the hollow shaft motor 15 along the axial direction and the motor installation position, and the gap can meet the requirement that the rotation of the hollow shaft motor 15 does not generate scratch with the bottom shell. The two bottom shells are made of aluminum alloy materials with good heat conduction.
As shown in fig. 9 and 10, the first outer casing 1 includes a seed box 101, a seed inlet pipe 102, a seed dropping opening 103, and a seed charging chamber 104; the seed box 101 is connected with the seed filling chamber 104 through the seed inlet pipe 102, the seed inlet pipe 102 is in a funnel shape with an upper opening and a lower opening and the periphery being closed, the inner side surface 105 of the seed inlet pipe 102 is a cylindrical surface concentric with the first seed sucking disc 3, the seed dropping opening 103 is arranged along a plumb of the seed filling chamber 104 and extends downwards, and the bottom of the seed filling chamber 104 is a horizontal section 106 for exposing part of the seed sucking holes 302, so that the seed sucking holes can be observed and cleaned conveniently. The horizontal section 106 and the inner side of the seed dropping opening 103 are provided with arc sections 107, the arc sections are concentric cylindrical surfaces with the first seed suction disc 3, the displacement track of the seed suction disc is reduced to be intersected with the outer shell body entity by arranging two concentric cylindrical surfaces with the seed suction disc, so that the probability that seeds are brought into the space between the outer shell body and the seed suction disc is reduced, and the seed breakage rate is reduced. The periphery of first shell body distributes installation ear 13, passes through installation ear 13, bolted connection between first shell body 1 and the first drain pan 2. The structure of second shell body is the same with first shell body, and two seed casees all inwards incline the bias, reduce the distance between two seed casees 101, can effectively reduce this double-disk seed metering ware's occupation space. The two outer shells can be made of transparent materials, so that the working process can be observed conveniently. .
As shown in fig. 11, the first seed suction disc 3 comprises a disc surface 301 and seed suction holes 302, the seed suction holes 302 are uniformly distributed along the disc surface 301, the seed suction holes comprise 2/5 hemispherical pits 303 and an inclined cylindrical section 304, the inclined cylindrical section 304 forms an included angle of 45 degrees with the axial direction of the disc surface, the 2/5 hemispherical pits are close to the first outer shell, and the inclined cylindrical section is close to the first bottom shell. The second seed suction disc 6 has the same structure as the first seed suction disc 3, and has the seed suction holes 302 with the same structure. The seed suction hole with the structure has the effect of reducing the horizontal initial speed of the seeds when the seeds fall down, can reduce the collision times of the seeds and the pipe wall, and improves the uniformity of the hole distance.
The above-mentioned embodiments are preferred embodiments of the present invention, and the present invention is not limited thereto, and any other modifications or equivalent substitutions that do not depart from the technical spirit of the present invention are included in the scope of the present invention.

Claims (10)

1. A double-disk integrated seed sowing device is characterized in that: comprises a first seed sowing mechanism, a second seed sowing mechanism, a transmission assembly and a hollow shaft motor; the first arranging mechanism comprises a first outer shell, a first bottom shell and a first seed sucking disc; the second seed sowing mechanism comprises a second outer shell, a second bottom shell and a second seed suction disc; the hollow shaft motor is characterized in that the first bottom shell is connected with the second bottom shell, a motor installation position is formed between the first bottom shell and the second bottom shell, the hollow shaft motor is installed at the motor installation position, the first seed suction disc is arranged close to the first bottom shell, the first seed suction disc is sunk into the end face of the first bottom shell and is flushed with the end face, the first seed suction disc is connected with the output end of the hollow shaft motor, the second seed suction disc is arranged close to the second bottom shell, the second seed suction disc is sunk into the end face of the second bottom shell and is flushed with the end face, the transmission assembly is installed in the inner ring of the hollow shaft motor, one end of the transmission assembly is connected with the first seed suction disc, the other end of the transmission assembly is rotatably installed on the second bottom shell and is connected with the second seed suction disc, the first outer shell is connected with the first bottom shell, and the second outer shell is connected with the second bottom shell.
2. The dual-disk integrated seed meter of claim 1, wherein: the distance between the first seed suction disc and the second seed suction disc is 55-56 mm.
3. The dual-disk integrated seed meter of claim 1, wherein: the transmission assembly comprises an intermediate shaft part, a first mandrel, a second mandrel and a preload piece; the utility model discloses a hollow shaft motor, including well intermediate shaft spare, second holding chamber, first dabber along axial slidable ground joint in the first chamber that holds, the one end that well intermediate shaft spare is located the hollow shaft inner circle of hollow shaft motor, well intermediate shaft spare is close to the second and inhales the dish is rotationally installed in the second drain pan, the both ends of well intermediate shaft spare are opened respectively and are first held the chamber and the chamber is held to the second, first dabber along axial slidable ground joint in first holding the chamber, the one end and the second of first dabber inhale the dish and be connected, the other end of first dabber is through the pretension piece and the first inner wall butt that holds the chamber, second dabber along axial slidable ground joint in the second holds the chamber, the one end and the second of second dabber inhale the dish and be connected, and its other end holds the inner wall butt in chamber through pretension piece and second.
4. The dual disk integrated seed meter of claim 3, wherein: the first chamber of holding is including the path cavity and the big footpath cavity that are linked together, the path cavity is close to the setting of first kind of a dish, path cavity and big footpath cavity junction are the step face, the other end of first dabber is the flange section, the one end and the step face butt of pretensioning piece, its other end and flange section butt.
5. The dual disk integrated seed meter of claim 3, wherein: the device also comprises a first end cover and a second end cover; the first end cover is buckled on the outer side of the first mandrel, and the second end cover is buckled on the outer side of the second mandrel.
6. The dual-disk integrated seed meter of claim 1, wherein: the first bottom shell comprises a mounting plate and a shell; the utility model discloses a motor installation device, including casing, mounting panel, motor installation through-hole, first negative pressure air chamber, negative pressure export, first positive pressure air chamber and malleation export, the casing is still equipped with first negative pressure air chamber, negative pressure export, first positive pressure air chamber and positive pressure export, first negative pressure air chamber and first positive pressure air chamber all are located the outside of motor installation through-hole, the negative pressure export is connected with first negative pressure air chamber, malleation export is connected with first positive pressure air chamber, first negative pressure air chamber's the degree of depth is the triple of its self width, first negative pressure air chamber is 1mm with first positive pressure air chamber's minimum wall thickness, casing periphery distribution installation ear.
7. The dual-disk integrated seed meter of claim 1, wherein: the second drain pan is equipped with motor mounting groove, bearing mounting hole, second negative-pressure air chamber, second positive-pressure air chamber and motor cable export, the motor mounting groove is located the middle part of second drain pan, the bearing mounting hole is located the middle part of motor mounting groove, second negative-pressure air chamber is located the outside of motor mounting groove, motor cable export and motor mounting groove intercommunication, the degree of depth of second negative-pressure air chamber is the triple of its self width, second negative-pressure air chamber is 1mm with the minimum wall thickness of second positive-pressure air chamber, the outside evenly distributed installation ear of second drain pan.
8. The dual-disk integrated seed meter of claim 1, wherein: the first outer shell comprises a seed box, a seed inlet pipe, a seed dropping port and a seed filling chamber; the seed box is connected with the seed filling chamber through the seed inlet pipe, the inner side surface of the seed inlet pipe is a cylindrical surface concentric with the first seed suction plate, the seed falling port is arranged along a plumb bob of the seed filling chamber and extends downwards, the bottom of the seed filling chamber is a horizontal section for exposing part of seed suction holes, the horizontal section and the inner side of the seed falling port are provided with an arc section which is a cylindrical surface concentric with the first seed suction plate, and mounting lugs are distributed on the periphery of the first shell.
9. The dual-disk integrated seed meter of claim 8, wherein: the structure of the second outer shell is the same as that of the first outer shell, and the two seed boxes are biased inwards.
10. The dual-disk integrated seed meter of claim 1, wherein: the first seed suction disc comprises a disc surface and seed suction holes, the seed suction holes are evenly distributed along the disc surface, each seed suction hole comprises 2/5 hemispherical pits and an inclined cylindrical section, the inclined cylindrical section and the disc surface have an axial included angle of 45 degrees, the 2/5 hemispherical pits are close to the first outer shell, and the inclined cylindrical section is close to the first bottom shell.
CN202110774095.2A 2021-07-08 2021-07-08 Double-disc integrated seed sowing device Active CN113396673B (en)

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CN113396673B CN113396673B (en) 2022-07-29

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