Hollow corn threshing drill bit

Abstract

The invention relates to the field of drill bits, in particular to a hollow corn threshing drill bit. The hollow corn threshing drill bit comprises a drill bit body, an upper cover plate, a lower cover plate, fastening nuts, bearings, a drill sleeve, a locating pin, a fixing frame, separating sleeves and spherical rolling bodies, wherein the upper cover plate and the lower cover plate are used for fixing a drill handle, the spherical rolling bodies are uniformly distributed on the upper cover plate and the lower cover plate, the drill bit body is fixedly arranged on the upper cover plate and the lower cover plate, the upper cover plate and the lower cover plates are internally respectively provided with eleven uniformly distributed spherical rolling bodies, the fastening nuts are matched with threads arranged at the position of the drill handle, a spiral guiding groove in the drill bit body is in contact with the locating pin which is fixedly arranged on the drill sleeve, the locating pin is preferably in a spherical shape, and the bearings are in interference fit with the drill handle; when the hollow corn threshing drill bit is used for drilling and threshing corns, the drill bit body is driven to do reciprocating rotational motion under the matching action of the locating pin and the guiding groove by power transmitted from a cover plate connecting position, and corncobs can be discharged from a center hole in the drill bit body. The hollow corn threshing drill bit disclosed by the invention has the advantages that the threshing efficiency of a corn harvester is greatly increased, and the throwing waste of corn kernels is reduced.

Description

technical field [0001] The invention relates to the field of drill bits, in particular to a corn threshing hollow drill bit. Background technique [0002] When the corn is mature, the corn seeds are not dry, about 7-8% dry, and the corn seeds and the cob core are integrated into a relatively strong one, so it is difficult to thresh the corn seeds. Effect and cause the waste of serious corn seed and corncob. Contents of the invention [0003] The purpose of the present invention is to provide a corn threshing hollow drill bit, which can take out the corn cob as a whole when the hollow drill bit performs drilling work and greatly improves the production efficiency of corn threshing. [0004] The technical scheme of the present invention is constituted in this way, a corn threshing hollow drill bit has a center hole from top to bottom in the drill body, which includes the drill body, the upper and lower cover plates for fixing the drill shank, fastening nuts, bearings, drill...

AI Technical Summary

Problems solved by technology

[0002] When the corn is mature, the corn seeds are not dry, about 7-8% dry, the corn seeds and the cob core are integrated into one body, it is difficult to threshing, either the corn seeds are smashed, or they are crushed into cakes, which cannot achieve the ideal threshing effect and cause serious waste of corn seeds and corn cobs

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