CN114503812B - Diameter and depth adjustable hole type rice seed sowing device sowing wheel - Google Patents
Diameter and depth adjustable hole type rice seed sowing device sowing wheel Download PDFInfo
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- CN114503812B CN114503812B CN202210078180.XA CN202210078180A CN114503812B CN 114503812 B CN114503812 B CN 114503812B CN 202210078180 A CN202210078180 A CN 202210078180A CN 114503812 B CN114503812 B CN 114503812B
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- ejector rod
- adjusting
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- hole
- boss
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/20—Parts of seeders for conducting and depositing seed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
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Abstract
The application discloses a seeding wheel of a hole-type rice seeding apparatus with adjustable diameter and depth, which comprises an outer wheel, a driving gear, an end cover, a main shaft, an adjusting boss, a push rod device, a boss limiting ring, a depth reset spring and a bearing, wherein one end of the push rod device is nested in a seeding through hole on the outer wheel, the other end of the push rod device is matched with a chute rail on the adjusting boss, the adjusting boss is arranged on the main shaft through the bearing, the boss limiting ring and the depth reset spring are sleeved on the main shaft, the driving gear and the end cover are respectively arranged on two end surfaces of the outer wheel, one end of the main shaft penetrates through a central hole of the driving gear, and the other end of the main shaft penetrates through a central hole of the end cover; the application has the advantages that: 1. the depth of the sowing holes of the sowing wheel and the diameter of the sowing holes can be simultaneously adjusted so as to simultaneously meet the precision sowing requirements of different varieties and different sowing amounts of rice; 2. compact structure, job stabilization.
Description
Technical Field
The application belongs to the technical field of agricultural machinery, and particularly relates to a seeding wheel of a hole-type rice seeding apparatus with adjustable diameter and depth.
Background
The rice is a main grain crop in China, the annual planting area is about 3000 hectare, the rice planters are about 1.5 hectares, the rice planters account for about 60% of the total number of farmers, the annual rice yield is about 20000 kilotons, and the rice accounts for 40% of the total number of grains in China, so that the rice occupies an important role in Chinese grain security. With the transfer of rural labor force and the development of agricultural machinery, the direct seeding of rice machinery can save the links of seedling raising and transplanting, has the advantages of high operation efficiency, cost saving, labor saving and the like, and is increasingly popular with farmers.
Because of various rice varieties and large physical and mechanical characteristic difference, the existing seed sowing device cannot meet the requirements of precision sowing of different varieties and different sowing amounts of rice, and particularly cannot meet the requirements of precision sowing of indica rice bud seeds and japonica rice bud seeds with lengths exceeding 11 mm. When the rotation speed of the sowing wheel is high, the phenomenon of lack sowing and missing sowing is common. Therefore, in order to meet the above operation requirements or make up for the defects, it is highly desirable to invent a hole-type rice seed sowing device sowing wheel with adjustable diameter and depth.
Disclosure of Invention
Aiming at the prior art, the application aims to overcome the defects in the prior art and adapt to the actual needs, thereby providing the seeding wheel of the hole-type rice seeding apparatus with adjustable diameter and depth.
In order to achieve the above purpose, the technical scheme adopted by the application is as follows:
the utility model provides a diameter and degree of depth adjustable hole type rice seed metering ware seeding wheel, which comprises an outer wheel, a drive gear, the end cover, the main shaft, adjust the boss, ejector pin device, boss spacing ring, degree of depth reset spring and bearing, the equipartition has a plurality of directional centre of a circle's seeding through-holes on the outer wheel circumference, it has multiunit chute rail to adjust the boss to equip with the equipartition, and every group chute rail all includes two chute rails that set up in opposition, ejector pin device is equipped with a plurality of, a plurality of ejector pin device one end all respectively with a set of chute rail nest cooperation, the other end is nested in the seeding through-hole respectively, ejector pin device and seeding through-hole constitute the changeable seeding type hole of diameter degree of depth, adjust boss both ends and all install on the main shaft through the bearing respectively, boss spacing ring and degree of depth reset spring cover are located between adjusting boss and the boss spacing ring, boss spacing ring is located between degree of depth reset spring and the driving gear, driving gear and the end cover is installed on the both ends terminal surface respectively, the main shaft passes driving gear middle part, the boss spacing ring, degree of depth reset spring, bearing and end cover middle part, and end cover middle part are exposed respectively through bolt fixed connection, after the main shaft, the end cover respectively, the outer wheel and the boss is located outside the boss and the boss is located outside.
Further, the regulation boss is trapezoidal solid of revolution structure, and this trapezoidal solid of revolution structure both ends all are equipped with the bearing installation counter bore that is used for installing the bearing, are equipped with the main shaft through-hole that is used for the main shaft to pass between two bearing installation counter bores, and the equipartition has 8 sets of chute rails on this trapezoidal solid of revolution structure lateral surface, and the upper end all is equipped with the control groove in the middle of every set of chute rail, and the lower extreme all is equipped with the regulation track in the middle of every set of chute rail, all links up through excessive inclined plane between regulation track and the control groove.
Further, the ejector rod device comprises a movable adjusting ejector rod, an outer ring ejector rod, a fixed inner ring ejector rod, a diameter adjusting inner core and an ejector rod reset compression spring, a through hole for installing the diameter adjusting inner core is formed in the middle of the movable adjusting ejector rod, one end of the diameter adjusting inner core penetrates through the through hole of the movable adjusting ejector rod, the other end of the diameter adjusting inner core is nested with one end of the outer ring ejector rod, one end of the fixed inner ring ejector rod is nested and installed inside the outer ring ejector rod and exposed out of the outer ring ejector rod, the exposed end of the fixed inner ring ejector rod is in threaded connection with one end of the movable adjusting ejector rod, the other end of the fixed inner ring ejector rod is located in the other end of the outer ring ejector rod and forms a cavity with the other end of the outer ring ejector rod, the ejector rod reset compression spring is placed in a compression state, the outer bottom surface of one end of the outer ring ejector rod is always in contact with the other end of the diameter adjusting inner core under the action of ejector rod reset compression spring, the other end of the movable adjusting ejector rod is nested with a chute rail of an adjusting boss, and the other end of the outer ring ejector rod is nested with a sowing through hole on an outer ring.
Further, one end of the movable adjusting ejector rod is a mounting cylinder, the other end of the movable adjusting ejector rod is an inclined ejector rod, the end part of the inclined ejector rod is an inclined plane, and guide rails matched with inclined groove rails on the adjusting boss are arranged on two sides of the inclined plane, so that the diameter of a sowing hole and the depth of the sowing hole can be adjusted according to operation requirements; the middle part of the inclined plane is provided with an inclined groove matched with an adjusting track on the adjusting boss, the bottom surface of the inclined groove is parallel to the inclined plane, and the end part of the mounting cylinder is sequentially provided with a threaded counter bore connected with one end of the fixed inner ring ejector rod, a limiting counter bore used for limiting the moving range of the diameter adjusting inner core and a through hole used for mounting the diameter adjusting inner core towards the direction of the inclined ejector rod; the diameter adjusting inner core is of a stepped cylinder structure, the stepped cylinder structure sequentially comprises an outer ring ejection ejector rod cylinder, a limiting cylinder and a diameter adjusting cylinder, the end part of the diameter adjusting cylinder is provided with a drag reduction dome matched with a control groove and a transition inclined plane, the drag reduction dome is used for reducing resistance between an ejector rod device and an adjusting boss in the diameter depth adjusting process, the outer ring ejection ejector rod cylinder is nested and arranged in a counter bore at one end of the outer ring ejection ejector rod, the limiting cylinder is matched with the limiting counter bore of the movable adjusting ejector rod so as to realize the limiting effect on the diameter adjusting inner core, the diameter adjusting cylinder penetrates through a through hole of the movable adjusting ejector rod, and the drag reduction dome is exposed out of the movable adjusting ejector rod and can move up and down on the control groove, the transition inclined plane and the adjusting rail on the adjusting boss; the outer ring ejection ejector rod is cylindrical, the middle part of one end of the cylindrical shape is provided with a counter bore matched with the outer ring ejection ejector rod cylinder of the diameter adjusting inner core, 4 guide U-shaped through grooves are uniformly distributed around the counter bore along the circumferential direction, the 4 guide U-shaped through grooves form a circular ring shape, the middle part of the other end of the cylindrical shape is provided with a blind hole, and the inner diameter of the blind hole is larger than the maximum outer diameter of a circular ring formed by the 4 guide U-shaped through grooves; the fixed inner ring ejector rod is cylindrical, a spring mounting counter bore for mounting an ejector rod reset compression spring is formed in the middle of one end of the cylindrical shape, 4U-shaped bosses matched with 4 guide U-shaped through grooves on the outer ring ejector rod are uniformly distributed around the outer diameter edge of the spring mounting counter bore, external threads I matched with the threaded counter bore on the movable adjusting ejector rod are formed in the outer circular surface of each 4U-shaped bosses, the 4U-shaped bosses surround the periphery of the spring mounting counter bore in a circular ring shape, and a straight groove which is convenient to screw with the movable adjusting ejector rod is formed in the middle of the other end of the fixed inner ring ejector rod; one end of the diameter adjusting inner core passes through a through hole in the middle of the movable adjusting ejector rod through the diameter adjusting cylinder, the limiting cylinder is arranged in the limiting counter bore, the other end of the diameter adjusting inner core is nested with the counter bore in the middle of the outer ring ejector rod through the outer ring ejector rod cylinder, one end of the fixed inner ring ejector rod passes through 4 guide U-shaped through grooves from the other end of the outer ring ejector rod through 4U-shaped bosses and is exposed out of one end of the outer ring ejector rod, the exposed end of the fixed inner ring ejector rod is connected with a threaded counter bore in one end of the movable adjusting ejector rod through an external thread I on the outer circular surface of the 4U-shaped bosses, the other end of the fixed inner ring ejector rod is positioned in a blind hole in the other end of the outer ring ejector rod, a cavity is formed by the blind hole and a spring-mounting counter bore in the middle of one end of the fixed inner ring ejector rod, an ejector rod reset compression spring is arranged in the cavity, and the other end of the movable adjusting ejector rod is nested and connected with a chute rail on the adjusting boss through a guide rail.
Further, each group of chute rail inclination on the regulation boss is the same with the inclined plane inclination of removal regulation ejector pin, and chute rail, regulation track and the control groove on the regulation boss are the slope form, and its inclination is the same, remove the installation cylinder external diameter on the one end of regulation ejector pin and the ejecting ejector pin external diameter of outer lane the same, and the biggest external diameter of 4 circumference that U-shaped boss is located is less than fixed inner circle ejector pin external diameter, and fixed inner circle ejector pin external diameter matches with the blind hole aperture on the ejecting ejector pin of outer lane other end, and the calotte cooperatees with drag reduction control groove and excessive inclined plane.
Further, the number of the ejector rod devices is 8.
Further, the main shaft is the step shaft, and one end is equipped with external screw thread II, and the other end is equipped with the retaining ring groove that is used for installing the retaining ring, and the regulation boss passes through the epaxial installation of bearing realization on the main shaft to realize axial positioning through the retaining ring in ladder and the retaining ring groove on the main shaft, the main shaft is equipped with external screw thread II end and exposes outside drive gear, and the other end exposes outside the end cover.
Further, be equipped with the end cover centre bore that is used for the main shaft to pass through in the middle of the end cover, end face middle part of end cover one end is equipped with the ring boss that is used for spacing, and ring boss place terminal surface has 4 countersunk bolt holes that are used for the end cover installation along circumferencial direction equipartition, and ring boss internal diameter is the same with end cover centre bore aperture, and just concentric.
Further, 8 seeding through holes pointing to the circle center are uniformly distributed on the outer wheel along the circumferential direction, 4 bosses pointing to the circle center are uniformly distributed on the inner side of the outer wheel, the 4 bosses are provided with mounting through holes for mounting the end cover and the driving gear, the hole spacing of the 4 mounting through holes is matched with the hole spacing of the 4 countersunk head bolt holes on the end cover, and the hole diameters of the 4 mounting through holes are matched with the hole diameters of the 4 countersunk head bolt holes on the end cover.
Further, 4 threaded holes are uniformly distributed on the driving gear along the circumferential direction, a driving gear center hole for the spindle to pass through is formed in the middle of the driving gear, and the aperture and the hole spacing of the 4 threaded holes are matched with the aperture and the hole spacing of the 4 mounting through holes on the outer wheel.
In the application, when the drag reduction dome is matched with the diameter control groove of the adjusting boss, an outer ring ejection ejector rod in the ejector rod device is subjected to downward pressure of an ejector rod reset compression spring, the outer bottom surface of one end of the outer ring ejection ejector rod is contacted with the diameter adjusting inner core, and at the moment, a sowing hole of the sowing wheel is in a state of large diameter and deep depth; when the drag reduction dome is matched with the excessive inclined surface of the adjusting boss, the sowing holes of the sowing wheel are in an excessive state of hole diameter depth adjustment; when the drag reduction dome is matched with the adjusting track of the adjusting boss (namely, the drag reduction dome is contacted with the upper surface of the adjusting track), the outer bottom surface of one end of the outer ring ejection ejector rod in the ejector rod device is subjected to upward ejection force of the diameter adjusting inner core, the outer ring ejection ejector rod is ejected upward, and at the moment, the sowing holes of the sowing wheel are in a state of small diameter and shallow depth.
The beneficial effects of the application are as follows: the sowing wheel of the seed sowing device can simultaneously meet the requirement of precision sowing of indica rice bud seeds and japonica rice bud seeds with the length of more than 11mm by matching the guide rail with the chute rail on the adjusting boss; compact structure, job stabilization, but this device simultaneously adjusts the degree of depth and the size of sowing type hole diameter of sowing wheel sowing type hole, satisfies the accurate volume seeding requirement of different varieties, the different volume of sowing of rice simultaneously.
Drawings
FIG. 1 is an exploded view of the present application;
FIG. 2 is a schematic diagram of the structure of the present application;
FIG. 3 is an exploded view of the ejector pin assembly of the present application;
FIG. 4a is a perspective view of a mobile adjustment lift pin according to the present application;
FIG. 4b is another visual perspective view of the movement adjustment jack of the present application;
FIG. 5 is a schematic view of the diameter-adjusting core of the present application;
FIG. 6a is a perspective view of an outer ring ejector pin of the present application;
FIG. 6b is another visual perspective view of the outer race ejector pin of the present application;
FIG. 7a is a perspective view of a stationary inner race post rod according to the present application;
FIG. 7b is another perspective view of the stationary inner race carrier rod of the present application;
FIG. 8a is a perspective view of an adjustment boss according to the present application;
FIG. 8b is another visual perspective view of the adjustment boss of the present application;
FIG. 9 is a schematic view of the structure of the spindle of the present application;
FIG. 10 is a schematic view of the structure of the end cap of the present application;
FIG. 11 is a schematic view of the outer wheel of the present application;
fig. 12 is a schematic structural view of a driving gear of the present application.
In the figure, 1, a driving gear; 2. an outer wheel; 3. a boss limiting ring; 4. a main shaft; 5. a depth return spring; 6. a push rod device; 7. adjusting the boss; 8. an end cap; 9. a central hole of the end cover; 10. a retainer ring; 11. a bearing; 12. a drive gear central bore; 13. fixing an inner ring ejector rod; 14. the ejector rod returns to the compression spring; 15. the outer ring ejects the ejector rod; 16. a diameter-adjusting inner core; 17. moving the adjusting ejector rod; 18. a mounting cylinder; 19. an inclined ejector rod; 20. an inclined plane; 21. a guide rail; 22. a chute; 23. a threaded counter bore; 24. limiting counter bores; 25. a through hole; 26. the outer ring ejects the ejector rod cylinder; 27. a limit cylinder; 28. a diameter adjustment cylinder; 29. a drag reducing dome; 30. countersink; 31. guiding the U-shaped through groove; 32. a U-shaped boss; 33. a spring is installed in the counter bore; 34. an external thread I; 35. a straight slot; 36. a bearing is provided with a counter bore; 37. a spindle through hole; 38. a chute rail; 39. a control groove; 40. adjusting the track; 41. an excessive slope; 42. an external thread II; 43. a retainer ring groove; 44. a circular boss; 45. countersunk bolt holes; 46. sowing the through holes; 47. mounting through holes; 48. a threaded hole; 49. and (5) a blind hole.
Detailed Description
The following describes specific embodiments of the present application in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the application, are not intended to limit the application.
In the description of the present application, it should be noted that all directional indicators (such as up, down, left, right, front, rear, and middle … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are correspondingly changed.
It will also be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
As shown in figures 1 to 12, the application provides a seeding wheel of a hole-type rice seeding apparatus with adjustable diameter and depth, which comprises an outer wheel 2, a driving gear 1, an end cover 8, a main shaft 4, an adjusting boss 7, a push rod device 6, a boss limiting ring 3, a depth reset spring 5 and a bearing 11, wherein a plurality of seeding through holes 46 pointing to the circle center are uniformly distributed on the circumference of the outer wheel 2, a plurality of groups of chute rails 38 are uniformly distributed on the adjusting boss 7, each group of chute rails 38 comprises two oppositely arranged chute rails, the push rod device 6 is provided with a plurality of groups, one end of each push rod device 6 is respectively nested and matched with one group of chute rails 38, the other end of each push rod device is respectively nested in the seeding through hole 46, the push rod device 6 and the seeding through holes 46 form a seeding hole with variable diameter and depth, the two ends of the adjusting boss 7 are respectively arranged on the main shaft 4 through bearings 11, the boss limiting ring 3 and the depth reset spring 5 are sleeved on the main shaft 4, the depth reset spring 5 is positioned between the adjusting boss 7 and the boss limiting ring 3, the boss limiting ring 3 is positioned between the depth reset spring 5 and the driving gear 1, the driving gear 1 and the end covers 8 are respectively arranged on the end faces of the two ends of the outer wheel 2, the main shaft 4 sequentially penetrates through the middle part of the driving gear 1, the middle part of the outer wheel 2, the boss limiting ring 3, the depth reset spring 5, the bearings 11, the middle part of the adjusting boss 7, the bearings 11 and the middle part of the end covers 8, and after being fixedly connected through bolts, the two ends of the main shaft 4 are respectively exposed out of the driving gear 1 and the end covers 8, and the adjusting boss 7, the ejector rod device 6, the boss limiting ring 3, the depth reset spring 5 and the bearings 11 are all positioned in the outer wheel 2.
Preferably, the adjusting boss 7 is a trapezoid solid of revolution structure, two ends of the trapezoid solid of revolution structure are respectively provided with a bearing mounting counter bore 36 for mounting the bearing 11, a main shaft through hole 37 for the main shaft 4 to pass through is arranged between the two bearing mounting counter bores 36, 8 groups of chute rails 38 are uniformly distributed on the outer side face of the trapezoid solid of revolution structure, a control groove 39 is respectively arranged at the upper end in the middle of each group of chute rails 38, an adjusting rail 40 is respectively arranged at the lower end in the middle of each group of chute rails 38, and the adjusting rails 40 are respectively connected with the control groove 39 through an excessive inclined surface 41.
Preferably, the ejector rod device 6 comprises a movable adjusting ejector rod 17, an outer ring ejector rod 15, a fixed inner ring ejector rod 13, a diameter adjusting inner core 16 and an ejector rod reset compression spring 14, wherein a through hole for installing the diameter adjusting inner core 16 is arranged in the middle of the movable adjusting ejector rod 17, one end of the diameter adjusting inner core 16 penetrates through the through hole 25 of the movable adjusting ejector rod 17, the other end of the diameter adjusting inner core 16 is nested with one end of the outer ring ejector rod 15, one end of the fixed inner ring ejector rod 13 is nested inside the outer ring ejector rod 15 and is exposed out of the outer ring ejector rod 15, the exposed end of the fixed inner ring ejector rod 13 is in threaded connection with one end of the movable adjusting ejector rod 17, the other end of the fixed inner ring ejector rod 13 is positioned in the other end of the outer ring ejector rod 15 and forms a cavity with the other end of the outer ring ejector rod 15, the ejector rod reset compression spring 14 is arranged in a compression state, the outer bottom surface of one end of the outer ring ejector rod 15 is always kept in contact with the other end of the diameter adjusting inner core 16 under the elastic force of the ejector rod reset compression spring 14, the other end of the movable adjusting ejector rod 17 is nested with a chute 38 of the adjusting boss 7, and the other end of the ejector rod 15 is connected with a sowing through hole 46 on the outer ring 2.
Preferably, one end of the movable adjusting ejector rod 17 is provided with a mounting cylinder 18, the other end is provided with an inclined ejector rod 19, the end part of the inclined ejector rod 19 is provided with an inclined plane 20, and two sides of the inclined plane 20 are provided with guide rails 21 matched with inclined groove rails 38 on the adjusting boss 7, so that the diameter of a sowing hole and the depth of the sowing hole can be adjusted according to operation requirements; the middle part of the inclined plane 20 is provided with a chute 22 matched with an adjusting track 40 on the adjusting boss 7, the bottom surface of the chute 22 is parallel to the inclined plane 20, and the end part of the mounting cylinder 18 is sequentially provided with a threaded counter bore 23 connected with one end of the fixed inner ring ejector rod 13, a limiting counter bore 24 used for limiting the moving range of the diameter adjusting inner core 16 and a through hole 25 used for mounting the diameter adjusting inner core 16 towards the direction of the inclined ejector rod 19; the diameter adjusting inner core 16 is of a stepped cylinder structure, the stepped cylinder structure sequentially comprises an outer ring ejection ejector rod cylinder 26, a limiting cylinder 27 and a diameter adjusting cylinder 28, a drag reduction dome 29 matched with a control groove 39 and a transition inclined plane 41 is arranged at the end part of the diameter adjusting cylinder 28, the drag reduction dome 29 is used for reducing resistance between the ejector rod device 6 and the adjusting boss 7 in the diameter depth adjusting process, the outer ring ejection ejector rod cylinder 26 is nested and arranged in a counter bore 30 at one end of the outer ring ejection rod 15, the limiting cylinder 27 is matched with a limiting counter bore 24 of the movable adjusting ejector rod 17 so as to realize the limiting effect on the diameter adjusting inner core 16, the diameter adjusting cylinder 28 penetrates through a through hole 25 of the movable adjusting ejector rod 17, and the drag reduction dome 29 is exposed out of the movable adjusting ejector rod 16 and can move up and down on a control groove 39, the transition inclined plane 41 and an adjusting track 40 on the adjusting boss 7; the outer ring ejection ejector rod 15 is cylindrical, the middle part of one end of the cylindrical shape is provided with a counter bore 30 matched with the outer ring ejection ejector rod cylinder 26 of the diameter adjusting inner core 16, 4 guide U-shaped through grooves 31 are uniformly distributed around the counter bore 30 along the circumferential direction, the 4 guide U-shaped through grooves 31 form a circular ring shape, the middle part of the other end of the cylindrical shape is provided with a blind hole 49, and the inner diameter of the blind hole 49 is larger than the maximum outer diameter of the circular ring formed by the 4 guide U-shaped through grooves 31; the fixed inner ring ejector rod 13 is cylindrical, a spring mounting counter bore 33 for mounting the ejector rod reset compression spring 14 is arranged in the middle of one end of the cylindrical shape, 4U-shaped bosses 32 matched with 4 guide U-shaped through grooves 31 on the outer ring ejector rod 15 are uniformly distributed around the outer diameter edge of the spring mounting counter bore 33, external threads I34,4 matched with the threaded counter bore 23 on the movable adjusting ejector rod 17 are arranged on the outer circular surface of the 4U-shaped bosses 32, the U-shaped bosses 32 are in a circular ring shape and surround the periphery of the spring mounting counter bore 33, and a straight groove 35 which is convenient to screw with the movable adjusting ejector rod 17 is arranged in the middle of the other end of the fixed inner ring ejector rod 13; one end of the diameter adjusting inner core 16 passes through a through hole 25 in the middle of the movable adjusting ejector rod 17 through a diameter adjusting cylinder 28, a limiting cylinder 27 is arranged in a limiting counter bore 24, the other end of the diameter adjusting inner core is nested with a counter bore 30 in one end of the outer ring ejector rod 15 through an outer ring ejector rod cylinder 26, one end of the fixed inner ring ejector rod 13 passes through 4U-shaped bosses 32 from the other end of the outer ring ejector rod 15 through 4 guide U-shaped through grooves 31 and is exposed out of one end of the outer ring ejector rod 15, the exposed end of the fixed inner ring ejector rod 13 is connected with a threaded counter bore 23 in one end of the movable adjusting ejector rod 17 through external threads I34 on the outer circular surface of the 4U-shaped bosses 32, the other end of the fixed inner ring ejector rod 13 is positioned in a blind hole 49 in the other end of the outer ring ejector rod 15, the blind hole 49 forms a cavity with a spring mounting counter bore 33 in the middle of one end of the fixed inner ring ejector rod 13, an ejector rod reset compression spring 14 is arranged in the cavity, and the other end of the movable adjusting ejector rod 17 is nested with a chute rail 38 on the adjusting boss 7 through a guide rail 21.
Preferably, the inclination angle of each group of chute rails 38 on the adjusting boss 7 is consistent with the inclination angle of the inclined plane 20 of the movable adjusting ejector rod 17, the chute rails 38, the adjusting rails 40 and the control groove 39 on the adjusting boss 7 are all inclined and have the same inclination angle, the outer diameter of the mounting cylinder 18 on one end of the movable adjusting ejector rod 17 is the same as the outer diameter of the outer ring ejector rod 15, the maximum outer diameter of the circumference where the 4U-shaped bosses 32 are located is smaller than the outer diameter of the fixed inner ring ejector rod 13, the outer diameter 13 of the fixed inner ring ejector rod is matched with the aperture of the blind hole 49 on the other end of the outer ring ejector rod 15, and the drag reduction dome 29 is matched with the control groove 39 and the excessive inclined plane 41.
Preferably, 8 ejector rod devices 6 are provided.
Preferably, the main shaft 4 is a stepped shaft, one end is provided with an external thread II 42, the other end is provided with a check ring groove 43 for installing the check ring 10, the adjusting boss 7 is installed on the shaft of the main shaft 4 through the bearing 11, and the axial positioning is realized through the steps on the main shaft 4 and the check ring 10 in the check ring groove 43, the end, provided with the external thread II 42, of the main shaft 4 is exposed out of the driving gear 1, and the other end is exposed out of the end cover 8.
Preferably, an end cover center hole 9 for the main shaft 4 to pass through is formed in the middle of the end cover 8, a circular ring boss 44 for limiting is arranged in the middle of the end face of one end of the end cover 8, 4 countersunk bolt holes 45 for installing the end cover 8 are uniformly distributed in the circumferential direction on the end face where the circular ring boss 44 is located, and the inner diameter of the circular ring boss 44 is the same as the aperture of the end cover center hole 9 and concentric.
Preferably, 8 seeding through holes 46 pointing to the circle center are uniformly distributed on the outer wheel 8 along the circumferential direction, 4 bosses pointing to the circle center are uniformly distributed on the inner side of the outer wheel 2, the 4 bosses are respectively provided with a mounting through hole 47 for mounting the end cover 8 and the driving gear 1, the hole spacing of the 4 mounting through holes 47 is matched with the hole spacing of 4 countersunk bolt holes 45 on the end cover 8, and the hole diameters of the 4 mounting through holes 47 are matched with the hole diameters of the 4 countersunk bolt holes 45 on the end cover 8.
Preferably, 4 threaded holes 48 are uniformly distributed in the driving gear 1 along the circumferential direction, a driving gear central hole 12 for the spindle 4 to pass through is arranged in the middle, and the aperture and the hole spacing of the 4 threaded holes 48 are matched with those of 4 mounting through holes 47 on the outer wheel 2.
In the application, a main shaft 4 sequentially passes through a driving gear central hole 12 on a driving gear 1, the middle part of an outer wheel 2, a boss limiting ring 3, a depth reset spring 5, a bearing 11, a main shaft through hole 37 on an adjusting boss 7, the bearing 11 and an end cover central hole 9 on an end cover 8, and sequentially passes through 4 countersunk bolt holes 45 on the end cover 8, 4 mounting through holes 47 on the outer wheel 2 and 4 threaded holes 48 on the driving gear 1 through 4 bolts respectively and fixedly connected.
In the application, the inner side wall of the outer wheel 2 is provided with 8 bulges pointing to the circle center along the circumferential direction, each bulge is provided with a seeding through hole 46, and the bulge can be any shape capable of realizing seeding and installation, such as a cylinder, a cuboid, a cube, a semicircle and the like, without affecting the normal operation of the application, and the shape structure of the bulge is not limited.
In the present application, the 8 seeding through holes 46 on the outer wheel 2 are all hollow cylinder structures.
In the present application, the total length of the 4 bosses on the inner side of the outer wheel 2 is equal to or less than the total length of the outer wheel 2.
In the application, the adjusting boss 7 is a trapezoid rotary body structure, namely, the structure is that one end of the adjusting boss is large in outer diameter, one end of the adjusting boss is small in outer diameter, when the adjusting boss is installed, one end of the adjusting boss 7, which is small in outer diameter, is arranged towards the depth return spring 5, the control groove 39 is located at one end of the adjusting boss 7, which is small in outer diameter, and the adjusting track 40 is located at one end of the adjusting boss 7, which is large in outer diameter.
In the application, the control groove 39 is used for controlling the diameter of the seeding hole of the seeding wheel, the control groove 39 is a groove, the end face of the adjusting rail 40 is lower than the outer side face of the adjusting boss 7, the end face of the control groove 39 is lower than the end face of the adjusting rail 40, two ends of the transitional inclined plane 41 are respectively connected with the lower end of the control groove 39 and the upper end of the adjusting rail 40, the structural shape and the size of the adjusting rail 40 are matched with those of the chute 22 on the movable adjusting ejector rod 17, and the structural shape and the size of the chute rail 38 on the adjusting boss 7 are matched with those of the guide rail 21 on the movable adjusting ejector rod 17.
In the present application, the inclined plane 20 of the movable adjustment push rod 17 and the chute 22 form a concave structure, and the shape of the guide rail 21 on the movable adjustment push rod 17 may be a square structure (i.e. square or cuboid) or a circular arc shape, etc., so that the shape of the guide rail is not limited under the condition of not affecting the normal operation of the present application.
In the application, a counter bore 30 at one end of an outer ring ejection ejector rod 15 is positioned in the middle of 4 guide U-shaped through grooves 31, and the 4 guide U-shaped through grooves 31 are all positioned at the inner side of a blind hole 49 at the other end of the outer ring ejection ejector rod 15.
In the application, when the drag reduction dome 29 is matched with the diameter control groove 39 of the adjusting boss 7, the outer ring ejection ejector rod 15 in the ejector rod device 6 is subjected to downward pressure of the ejector rod return compression spring 14, the outer bottom surface of one end of the outer ring ejection rod 15 is contacted with the diameter adjusting inner core 16, and at the moment, the sowing holes of the sowing wheel are in a state of large diameter and deep depth; when the drag reducing dome 29 is fitted with the excessive inclined surface 41 of the regulating boss 7, the sowing hole of the sowing wheel is in an excessive state of the depth regulation of the diameter of the hole; when the drag reduction dome 29 is matched with the adjusting track 40 of the adjusting boss 7 (namely, the drag reduction dome 29 is contacted with the upper surface of the adjusting track 40), the outer bottom surface of one end of the outer ring ejection ejector rod 15 in the ejector rod device 6 is subjected to the upward ejection force of the diameter adjusting inner core 16, the outer ring ejection ejector rod 15 is ejected upward, and at the moment, the sowing holes of the sowing wheel are in a state of small diameter and shallow depth.
In the application, referring to fig. 1, a seeding wheel of a hole-type rice seeding apparatus with adjustable diameter and depth comprises a driving gear 1, an outer wheel 2, a boss limiting ring 3, a main shaft 4, a depth reset spring 5, a push rod device 6, an adjusting boss 7, an end cover 8 and a bearing 11, wherein 8 seeding through holes 46 pointing to the circle center are arranged on the circumference of the outer wheel 2, 8 groups of chute rails 38 are arranged on the adjusting boss 7, one end of the push rod device 6 is in nested fit with one group of chute rails 38, the other end of the push rod device 6 is nested in the seeding through holes 46, the push rod device 6 and the seeding through holes 46 form a seeding hole with variable diameter and depth, the adjusting boss 7 is arranged on the main shaft 4 through the bearing 11, the boss limiting ring 3 and the depth reset spring 5 are sleeved on the main shaft 4, the driving gear 1 and the end cover 8 are respectively arranged on two end faces of the outer wheel 2, the driving gear 1, the outer wheel 2 and the end cover 8 are connected through bolts, one end of the main shaft 4 passes through the central hole 12 of the driving gear, and the other end cover central hole 9.
In the application, the guide rail 21 on the adjusting ejector rod 17 is matched with the chute rail 38 on the adjusting boss 7 through the movement in the ejector rod device 6, so that the depth of the sowing hole is adjusted; the diameter of the seeding hole is adjusted by matching the drag reduction dome 29 on the diameter adjusting inner core 16 in the ejector rod device 6 with the control groove 39 on the adjusting boss 7.
In the application, the cooperation of the adjusting boss 7 and the ejector rod device 6 not only can adjust the depth of the ejector rod device 6 in the sowing through hole 46, but also can adjust the diameter of the sowing hole, namely, when the diameter adjusting inner core 16 in the ejector rod device 6 moves into the control groove 43 on the adjusting boss 7, the outer ring ejection ejector rod 15 is not acted by the ejector rod reset compression spring 14 and is retracted downwards, so that the diameter of the sowing hole is increased, and the diameter of the sowing hole is adjusted; when the diameter adjusting inner core 16 in the ejector rod device 6 moves to the adjusting track 40 through the excessive inclined surface 41 on the adjusting boss 7, the outer ring ejector rod 15 is ejected upwards under the acting force of the ejector rod reset compression spring 14, so that the diameter of the sowing hole is reduced, and the diameter of the sowing hole is adjusted.
The working principle of the application is as follows: when the sphericity of the rice grain type is good, the sowing quantity can be controlled by adjusting the depth of the hole, and the adjusting method is as follows: the adjusting boss is axially fixed on the main shaft, the main shaft axially moves under the action of an external thread II on the main shaft, the adjusting boss axially moves along with the main shaft, a chute rail of the adjusting boss is matched with a guide rail of a movable adjusting ejector rod in the ejector rod device, and the guide rail of the movable adjusting ejector rod moves in the chute rail, so that the ejector rod device is driven to move up and down in a seeding through hole, and the depth of the seeding hole is adjusted;
when the rice grain type is long grain type, the sowing quantity can not be controlled only through depth adjustment, and the diameter and the depth of the sowing holes are required to be adjusted simultaneously, so that the purposes of increasing the diameter of the sowing holes and deepening the depth of the sowing holes are achieved, and the adjusting method is as follows: the drag reduction dome of the diameter adjusting inner core is always in contact with one of a control groove, an adjusting track or an excessive inclined plane on the adjusting boss, when the adjusting boss moves along with the axial direction of the main shaft, a guide rail of the moving adjusting ejector rod moves on a chute rail of the adjusting boss, the depth of a sowing hole is increased, if the drag reduction dome of the diameter adjusting inner core which is nested and installed in the moving adjusting ejector rod is positioned on the adjusting track of the adjusting boss, at the moment, the diameter adjusting inner core ejects the outer ring out of the ejector rod upwards, and the diameter of the sowing hole is in a small-diameter state;
in the process of increasing the depth of the seeding type hole, when the drag reduction dome of the diameter adjusting inner core which is nested and installed in the movable adjusting ejector rod moves to an excessive inclined plane of the adjusting boss, the outer bottom surface of the outer ring ejection ejector rod receives the upward ejection force of the diameter adjusting inner core, the outer ring ejection ejector rod moves along with the diameter adjusting inner core, and at the moment, the diameter of the seeding type hole is in an adjusting state;
with the increase of the depth of the profile hole, when the drag reduction dome of the diameter adjusting inner core which is nested and installed in the movable adjusting ejector rod moves into the control groove of the adjusting boss, the outer ring ejecting ejector rod in the ejector rod device is subjected to downward elasticity of the ejector rod resetting compression spring, so that the outer bottom surface of the outer ring ejecting ejector rod always keeps contact with the upper surface of the diameter adjusting inner core, at the moment, the outer ring ejecting ejector rod is not ejected upwards, and the diameter of the sowing type hole is in a large-diameter state.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims below, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (7)
1. The utility model provides a diameter and degree of depth adjustable hole formula rice seed metering ware sowing wheel which characterized in that: the device comprises an outer wheel, a driving gear, an end cover, a main shaft, an adjusting boss, a push rod device, a boss limiting ring, a depth reset spring and a bearing, wherein a plurality of seeding through holes pointing to the circle center are uniformly distributed on the circumference of the outer wheel, a plurality of groups of chute rails are uniformly distributed on the adjusting boss, each group of chute rails comprises two chute rails which are oppositely arranged, the push rod device is provided with a plurality of push rod devices, one ends of the push rod devices are respectively nested with one group of chute rails, the other ends of the push rod devices are respectively nested in the seeding through holes, the push rod device and the seeding through holes form a seeding hole with variable diameter, two ends of the adjusting boss are respectively arranged on the main shaft through the bearing, the boss limiting ring and the depth reset spring are sleeved on the main shaft, the depth reset spring is positioned between the adjusting boss and the boss limiting ring, the boss limiting ring is positioned between the depth reset spring and the driving gear, the driving gear and the end cover is respectively arranged on the end faces of two ends of the outer wheel, and the main shaft sequentially passes through the middle part of the driving gear, the outer wheel, the boss limiting ring, the depth reset spring, the bearing, the middle part of the adjusting boss limiting ring, the bearing and the middle part of the bearing and the end cover are fixedly connected through bolts, two ends of the push rod are respectively exposed out of the driving gear and the end cover, and the adjusting boss limiting ring and the bearing are respectively, and the bearing are positioned in the bearing after being fixedly connected; the adjusting boss is a trapezoid solid of revolution structure, bearing mounting counter bores for mounting bearings are arranged at two ends of the trapezoid solid of revolution structure, a main shaft through hole for a main shaft to pass through is arranged between the two bearing mounting counter bores, 8 groups of chute rails are uniformly distributed on the outer side face of the trapezoid solid of revolution structure, a control groove is arranged at the middle upper end of each group of chute rails, an adjusting rail is arranged at the middle lower end of each group of chute rails, and the adjusting rails are connected with the control grooves through transitional inclined planes; the ejector rod device comprises a movable adjusting ejector rod, an outer ring ejector rod, a fixed inner ring ejector rod, a diameter adjusting inner core and an ejector rod reset compression spring, wherein a through hole for installing the diameter adjusting inner core is formed in the middle of the movable adjusting ejector rod, one end of the diameter adjusting inner core penetrates through the through hole of the movable adjusting ejector rod, the other end of the diameter adjusting inner core is nested with one end of the outer ring ejector rod, one end of the fixed inner ring ejector rod is nested and installed inside the outer ring ejector rod and is exposed out of the outer ring ejector rod, the exposed end of the fixed inner ring ejector rod is in threaded connection with one end of the movable adjusting ejector rod, the other end of the fixed inner ring ejector rod is located in the other end of the outer ring ejector rod and forms a cavity with the other end of the outer ring ejector rod, the ejector rod reset compression spring is in a compressed state, the outer bottom surface of one end of the outer ring ejector rod is always contacted with the other end of the diameter adjusting inner core under the elastic force of the ejector rod reset compression spring, the other end of the movable adjusting ejector rod is nested with a chute rail of an adjusting boss, and the other end of the outer ring ejector rod is nested with a sowing through hole on the outer ring; one end of the movable adjusting ejector rod is a mounting cylinder, the other end of the movable adjusting ejector rod is an inclined ejector rod, the end part of the inclined ejector rod is an inclined plane, and guide rails matched with inclined groove rails on the adjusting boss are arranged on two sides of the inclined plane, so that the diameter of the sowing hole and the depth of the sowing hole can be adjusted according to operation requirements; the middle part of the inclined plane is provided with an inclined groove matched with an adjusting track on the adjusting boss, the bottom surface of the inclined groove is parallel to the inclined plane, and the end part of the mounting cylinder is sequentially provided with a threaded counter bore connected with one end of the fixed inner ring ejector rod, a limiting counter bore used for limiting the moving range of the diameter adjusting inner core and a through hole used for mounting the diameter adjusting inner core towards the direction of the inclined ejector rod; the diameter adjusting inner core is of a stepped cylinder structure, the stepped cylinder structure sequentially comprises an outer ring ejection ejector rod cylinder, a limiting cylinder and a diameter adjusting cylinder, the end part of the diameter adjusting cylinder is provided with a drag reduction dome matched with a control groove and a transition inclined plane, the drag reduction dome is used for reducing resistance between an ejector rod device and an adjusting boss in the diameter depth adjusting process, the outer ring ejection ejector rod cylinder is nested and arranged in a counter bore at one end of the outer ring ejection ejector rod, the limiting cylinder is matched with the limiting counter bore of the movable adjusting ejector rod so as to realize the limiting effect on the diameter adjusting inner core, the diameter adjusting cylinder penetrates through a through hole of the movable adjusting ejector rod, and the drag reduction dome is exposed out of the movable adjusting ejector rod and can move up and down on the control groove, the transition inclined plane and the adjusting rail on the adjusting boss; the outer ring ejection ejector rod is cylindrical, the middle part of one end of the cylindrical shape is provided with a counter bore matched with the outer ring ejection ejector rod cylinder of the diameter adjusting inner core, 4 guide U-shaped through grooves are uniformly distributed around the counter bore along the circumferential direction, the 4 guide U-shaped through grooves form a circular ring shape, the middle part of the other end of the cylindrical shape is provided with a blind hole, and the inner diameter of the blind hole is larger than the maximum outer diameter of a circular ring formed by the 4 guide U-shaped through grooves; the fixed inner ring ejector rod is cylindrical, a spring mounting counter bore for mounting an ejector rod reset compression spring is formed in the middle of one end of the cylindrical shape, 4U-shaped bosses matched with 4 guide U-shaped through grooves on the outer ring ejector rod are uniformly distributed around the outer diameter edge of the spring mounting counter bore, external threads I matched with the threaded counter bore on the movable adjusting ejector rod are formed in the outer circular surface of each 4U-shaped bosses, the 4U-shaped bosses surround the periphery of the spring mounting counter bore in a circular ring shape, and a straight groove which is convenient to screw with the movable adjusting ejector rod is formed in the middle of the other end of the fixed inner ring ejector rod; one end of the diameter adjusting inner core passes through a through hole in the middle of the movable adjusting ejector rod through the diameter adjusting cylinder, the limiting cylinder is arranged in the limiting counter bore, the other end of the diameter adjusting inner core is nested with the counter bore in the middle of the outer ring ejector rod through the outer ring ejector rod cylinder, one end of the fixed inner ring ejector rod passes through 4 guide U-shaped through grooves from the other end of the outer ring ejector rod through 4U-shaped bosses and is exposed out of one end of the outer ring ejector rod, the exposed end of the fixed inner ring ejector rod is connected with a threaded counter bore in one end of the movable adjusting ejector rod through an external thread I on the outer circular surface of the 4U-shaped bosses, the other end of the fixed inner ring ejector rod is positioned in a blind hole in the other end of the outer ring ejector rod, a cavity is formed by the blind hole and a spring-mounting counter bore in the middle of one end of the fixed inner ring ejector rod, an ejector rod reset compression spring is arranged in the cavity, and the other end of the movable adjusting ejector rod is nested and connected with a chute rail on the adjusting boss through a guide rail.
2. The diameter and depth adjustable hole-type rice seed metering device sowing wheel as claimed in claim 1, wherein: the inclined angle of each group of inclined groove rails on the adjusting boss is consistent with the inclined angle of the inclined plane of the movable adjusting ejector rod, the inclined groove rails, the adjusting rail and the control groove on the adjusting boss are inclined, the inclined angles are the same, the outer diameter of the mounting cylinder on one end of the movable adjusting ejector rod is the same as the outer diameter of the outer ring ejector rod, the maximum outer diameter of the circumference of the 4U-shaped bosses is smaller than the outer diameter of the fixed inner ring ejector rod, the outer diameter of the fixed inner ring ejector rod is matched with the aperture of the blind hole on the other end of the outer ring ejector rod, and the drag reduction dome is matched with the control groove and the transitional inclined plane.
3. The diameter and depth adjustable hole-type rice seed metering device sowing wheel according to any one of claims 1 to 2, wherein: the number of the ejector rod devices is 8.
4. The diameter and depth adjustable hole-type rice seed metering device sowing wheel as claimed in claim 1, wherein: the main shaft is the step shaft, and one end is equipped with external screw thread II, and the other end is equipped with the retaining ring groove that is used for installing the retaining ring, and the regulation boss passes through the epaxial installation of bearing realization on the main shaft to realize axial positioning through the retaining ring in step and the retaining ring groove on the main shaft, the main shaft is equipped with external screw thread II end and exposes outside drive gear, and the other end exposes outside the end cover.
5. The diameter and depth adjustable hole-type rice seed metering device sowing wheel as claimed in claim 1, wherein: the middle of the end cover is provided with an end cover center hole for the spindle to pass through, the middle of the end face of one end of the end cover is provided with a circular ring boss for limiting, 4 countersunk bolt holes for the end cover to be installed are uniformly distributed on the end face where the circular ring boss is located along the circumferential direction, and the inner diameter of the circular ring boss is the same as the aperture of the end cover center hole and concentric.
6. The diameter and depth adjustable hole-type rice seed metering device sowing wheel as claimed in claim 5, wherein: the outer wheel is evenly distributed with 8 seeding through holes pointing to the circle center along the circumferential direction, the inner side of the outer wheel is evenly distributed with 4 bosses pointing to the circle center, the 4 bosses are all provided with a mounting through hole for mounting the end cover and the driving gear, the hole spacing of the 4 mounting through holes is matched with the hole spacing of the 4 countersunk head bolt holes on the end cover, and the hole diameters of the 4 mounting through holes are matched with the hole diameters of the 4 countersunk head bolt holes on the end cover.
7. The diameter and depth adjustable hole-type rice seed metering device sowing wheel as claimed in claim 6, wherein: the driving gear is uniformly provided with 4 threaded holes along the circumferential direction, the middle part of the driving gear is provided with a driving gear center hole for the spindle to pass through, and the aperture and the hole spacing of the 4 threaded holes are matched with the aperture and the hole spacing of the 4 mounting through holes on the outer wheel.
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| CN202210078180.XA CN114503812B (en) | 2022-01-24 | 2022-01-24 | Diameter and depth adjustable hole type rice seed sowing device sowing wheel |
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| CN202210078180.XA CN114503812B (en) | 2022-01-24 | 2022-01-24 | Diameter and depth adjustable hole type rice seed sowing device sowing wheel |
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| CN114503812B true CN114503812B (en) | 2023-10-13 |
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| CN115812392A (en) * | 2022-12-08 | 2023-03-21 | 襄阳稻米香农业有限公司 | Fragrant rice dry land is directly sowed with even broadcast sowing device of seed directly |
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| CN114503812A (en) | 2022-05-17 |
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