A baler picks up and cuts knives

Abstract

The invention provides a bundling machine pickup cutting knife, and belongs to the technical field of agricultural machines. The upper parts of a blade I and a blade II are fixedly connected with two ends of a sleeve through shaft pins. The blade I and the blade II are in symmetric structure, wherein the profile of the blade I is formed by a pickup parabolic curve MN, a wind-guiding surface cross section curve RQ, a straight line MS, a curve SET, and a straight line TQ. The T point of the straight line TQ is overlapped with the T point of the curve SET. The Q point of the straight line TQ is overlapped with the Q point of the wind-guiding surface cross section curve RQ. The S point of the straight line MS is overlapped with the S point of the curve SET. The M point of the pickup parabolic curve MN is overlapped with the M point of the straight line MS. Using the bundling machine pickup cutting knife, straw throwing can be completed while cutting, so as to effectively improve straw pickup degree. The bundling machine pickup cutting knife also solves an abrasion problem of a cutting knife, reduces power loss of a machine tool, and operation noise is low.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to a picking and cutting knife for a baler. Background technique [0002] At present, most of the baler blades for corn and other hard straws on the market are blades of straw crushing and returning machines. These blades are roughly divided into hammer claw type, straight knife type, and throwing knife type and their improvements. [0003] The hammer-claw type crushes with the cooperation of the fixed knife, and it relies on high-speed rotation to grasp the straw. Hammer-claw type blades have a large moment of inertia during rotation, which aggravates the vibration of the machine tool, resulting in a decrease in the stability of the machine tool. Compared with other blades, the wind resistance is much larger, the power consumption is large, and the hammer claw wears more seriously. [0004] When the straight knife type is working, a set of three blades i...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of other straw crushing and returning knives, such as poor picking effect, falling back of thrown straw, repeated cutting, large power consumption, serious blade wear and other shortcomings during the working process, the purpose of the present invention is to provide a high picking cleanliness, cutting blade, etc. A baler picking and cutting knife with good crushing effect, strong throwing ability and low power consumption

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