Speed-adjustable asynchronous opposite-cutting type straw smashing device

Abstract

The invention belongs to the field of agricultural machinery, and particularly relates to a speed-adjustable asynchronous opposite-cutting type straw smashing device which comprises a rack assembly (1), a three-point suspension device (2), a gearbox (3), a transmission assembly (4), a comb rod pressing device (5), a smashing device (6), a stubble cleaning device (7), a speed changing device (8) and a smashing device assembly (9). According to the speed-adjustable asynchronous opposite-cutting type straw smashing device, the initial phase difference between a front smashing cutter and a rear smashing cutter is 170-190 degrees, the front smashing cutter and the rear smashing cutter are in an asynchronous staggered motion mode in the working process, the length of smashed straw is effectively reduced, and the smashing efficiency is improved. The speed-adjustable asynchronous opposite-cutting type straw smashing device is arranged in a bilateral symmetry mode, dynamic balance can be achieved in the working state, machine vibration is reduced, and a chain wheel set is arranged, so that different chain wheels can be replaced conveniently to achieve the speed changing effect.

Description

technical field [0001] The invention belongs to the field of agricultural machinery, and in particular relates to a speed-adjustable asynchronous splitting type straw crushing device. Background technique [0002] The annual output of crop straw in my country is huge, with many types and wide distribution. As an important part of the comprehensive utilization technology of straw, the straw returning technology has the functions of protecting the environment, improving the soil, saving costs and increasing income. With the implementation of the Northeast Black Land Conservation Tillage Action Plan, the area of ​​application and promotion of conservation tillage technology continues to expand. Straw returning technology is an integral part of conservation tillage technology. This technology requires field straw to be finely crushed before covering the ground. . [0003] At present, most domestic and foreign straw grinders adopt the swing knife type and the movable and fixed ...

AI Technical Summary

Problems solved by technology

However, its crank rocker mechanism has a high speed (about 834r / min) during operation, and the vibration generated by the machine tool is relatively large, the reliability is low, and the crushing speed cannot be adjusted in real time. The knife is chopping and cutting, and the theoretical chopping length is 6cm. There are problems such as high powder leakage rate and poor crushing effect.

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