Hill-drop seeding apparatus
Technical Field
The invention relates to the technical field of agricultural machinery, in particular to a hill-drop seed metering device.
Background
At present, a seeder used in field production, in particular a hill planter, cannot realize accurate adjustment of single seeding rate, and cannot realize integral adjustment of single-row seeding rate of each row, and conventionally, operators manually adjust the seeding rate by virtue of an experienter, so that errors are unavoidably caused, and balanced growth of crops is not facilitated.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a hill-drop seeding apparatus, which is realized by the following technical scheme:
The hole sowing seed metering device comprises a shell, a seed metering shaft and a seed metering unit, wherein the seed metering unit is arranged at a discharge opening of the shell and comprises a seed metering wheel, an adjusting disc and at least one plug cylinder, the seed metering wheel is driven to rotate by the seed metering shaft, the seed metering wheel is provided with seed metering holes which are corresponding to the number of plug cylinders and are arranged along the radial direction, the adjusting disc can be movably connected to the seed metering wheel in a rotating mode relative to the seed metering wheel through bolts, the adjusting disc is provided with guide grooves corresponding to the number of plug cylinders, the plug cylinders are formed by connecting a piston part with a driving part, the piston part of each plug cylinder is slidably arranged in the seed metering holes, the driving part of each plug cylinder extends out of the end face of the seed metering wheel to penetrate through the guide grooves, and the plug cylinders are guided to slide in the seed metering holes under the constraint of the guide grooves.
The hole sowing seed metering device is further designed in that the adjusting disc is a disc with a round hole in the center and teeth on the periphery.
The hole sowing seed metering device is further designed in that an adjusting channel is further arranged on the adjusting disc, scales used for indicating the depth of the hole sowing holes are arranged on the adjusting channel, and the adjusting channel is fixed through screwing bolts.
The hole sowing seed metering device is further designed in that the seed metering shaft is a regular polygon rotating shaft and is sleeved in the round hole of the adjusting disc in an empty mode.
The hole sowing seed metering device is further designed in that a transmission hole matched with the regular polygon rotating shaft is formed in one end face of the seed metering wheel, and an inner cavity matched with the plug body and a threaded hole for screwing a bolt are formed in the other end face of the seed metering wheel.
The hole sowing seed metering device is further designed in that the piston part of the plug cylinder is a cylinder matched with the seed metering hole, the driving part of the plug cylinder is a rectangular cylinder, the front end of the rectangular cylinder is provided with a clamping groove, the front end of the cylinder penetrates through the guide groove and axially limits the plug cylinder by arranging an elastic retainer ring in the clamping groove, and the constraint precision and the constraint effect of the guide groove on the plug cylinder are enhanced.
The hole sowing seed metering device is further designed in that a piston part and a driving part of the plug cylinder are cambered surfaces which are not contacted with the seed shaft compared with one side of the seed shaft.
The hole sowing seed sowing device is further designed in that the guide groove is an eccentric arc groove which is arranged at the center of the adjusting disc compared with the center of the adjusting disc.
The invention has the following advantages:
the single seeding rate of the hill-drop seeding apparatus can be accurately adjusted, and the whole adjustment of the seeding rate of the hill-drop seeding apparatus in each row can be realized by adjusting the adjusting disc with scales, thereby being beneficial to the balanced growth of crops.
Drawings
Fig. 1 is a schematic diagram of a hill-drop seed metering device.
Fig. 2 is a side schematic view of the hill-drop seed meter of fig. 1.
Fig. 3 is a schematic structural view of the seed discharging unit.
Fig. 4 is a schematic view of the structure of the seed discharging unit (excluding the seed discharging wheel).
Fig. 5 is an a-direction schematic view of a schematic view of the structure of the seed discharging unit shown in fig. 4.
Fig. 6 is a schematic view of one side end face of the seed metering wheel.
Fig. 7 is a schematic view of the other side end face of the seed metering wheel.
Detailed Description
The following describes the technical scheme of the present invention in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the hill-drop planter of the present embodiment mainly comprises a housing 1, a planter shaft 2 and a planter unit 3. The seed discharging unit is arranged at the discharge opening of the shell 1, seeds fall into the shell from the seed bin, and the seeds are discharged from the discharge opening through the seed discharging unit 3 to finish seed discharging operation. As shown in fig. 3 and 4, the seed discharging unit 3 is mainly composed of a seed discharging wheel 31, an adjusting disk 32 and three stopper cylinders 33. The number of the plug columns can be adjusted according to the actual planting environment, and the conventional technical means for those skilled in the art are not described herein. The seed wheel 31 is driven to rotate by the seed shaft 2. The seed wheel 31 is provided with three seed holes 311 arranged in the radial direction.
Referring to fig. 5, the adjusting plate 32 is movably connected to the seed metering wheel 31 by a bolt 312 in a rotatable manner with respect to the seed metering wheel 31, and specifically, three guide grooves 321 are provided on the adjusting plate 32. The plug cylinder 33 is formed by connecting a piston part 331 and a driving part 332, the piston part 331 of the plug cylinder 33 is slidably arranged in the seed metering hole 311, the driving part 332 of the plug cylinder 33 extends out of the end surface of the seed metering wheel 31 and passes through the guide groove 321, and the sliding of the plug cylinder 33 in the seed metering hole 311 is guided under the constraint of the guide groove 321.
As shown in fig. 5, the adjusting disk 32 of the present embodiment is a disk with a circular hole 323 at the center and teeth 424 at the outer periphery. The adjusting disk 32 is also provided with an adjusting channel 321, and the adjusting channel 321 is provided with scales for indicating the depth of the hill-drop holes. In the actual adjusting operation process, the adjusting disc 32 is only required to be adjusted until the hole sowing holes reach the set depth, and the adjusting channel 321 is fixed by screwing the bolts 312. The graduations of the adjusting channels 321 can be used for realizing uniform adjustment of a plurality of hill-drop seed metering devices driven by the seed metering shafts 2, so that the adjustment efficiency of operators is improved, and the precision of the seeding rate is ensured.
The seed shaft 2 of the present embodiment is a regular polygon shaft 2 (a regular hexagon transmission shaft in the present embodiment), referring to fig. 1,3 and 4, the regular polygon shaft 2 is sleeved in the circular hole 323 of the adjusting disk 32.
As shown in fig. 6, a transmission hole 313 matched with the regular polygon rotary shaft is formed on one end surface of the seed metering wheel. As shown in fig. 7, the other end surface of the seed metering wheel is provided with a cavity 315 adapted to the plug body 33 and a threaded hole 314 for screwing in a bolt.
As shown in fig. 4, the piston portion 331 of the plug 33 is a cylinder 331 adapted to the seed hole 311. The driving portion 332 of the plug cylinder 33 is a rectangular cylinder 332, a clamping groove (not shown in the figure) is formed in the front end of the rectangular cylinder 332, the front end of the rectangular cylinder 332 penetrates through the guide groove 321 and axially limits the plug cylinder 33 by arranging the circlip 3121 in the clamping groove, and the accuracy and effect of the restriction of the guide groove 321 on the plug cylinder 33 are enhanced.
As shown in fig. 7, compared with the case where one side of the seed shaft 2 is a cambered surface that is not in contact with the seed shaft, the piston portion 331 and the driving portion 332 of the plug cylinder 33 avoid the corner angle (the regular hexagonal transmission shaft in this embodiment) of the seed shaft 2, so as to avoid interference to the seed shaft 2.
The guide groove 321 is an eccentric arc groove 321 arranged at the center (round hole 323) of the adjusting disk compared with the center of the adjusting disk, and can also be a straight groove, which is a routine choice for those skilled in the art, and will not be described in detail herein.
The single seeding rate of the hill-drop seeding apparatus of the embodiment can be accurately adjusted, and the whole adjustment of the seeding rate of the hill-drop seeding apparatus of each row can be realized by adjusting the adjusting disc with scales, thereby being beneficial to the balanced growth of crops.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.