Straw returning device

Abstract

The invention discloses a straw returning device which comprises an outer cover, a smashing structure and at least one fan. The smashing structure comprises a rotary rod and a plurality of smashing cutters which are respectively disposed on the outer periphery of the rotary rod. Each fan is mounted in the outer cover, and negative pressure is formed in the outer cover when the fan rotates so as to suck straw to the preset work range of the smashing cutters. The rotary rod is mounted in the outer cover and can rotate relative to the outer cover so as to drive the smashing cutter to rotate. The straw returning device has the advantages that when each fan rotates in the outer cover, the negative pressure is formed in the outer cover to suck the straw in a field to the preset work range of the smashing cutters, the smashing cutter can rotate along with the rotary rod to smash the straw, incineration is avoided, environments are protected, and the straw returning device is simple in structure and low in cost.

Description

technical field [0001] The invention relates to an agricultural machine, in particular to a straw returning device. Background technique [0002] In traditional agricultural production, crops, such as corn, cotton, rape, sorghum, rice, wheat, etc., will have a lot of straw scattered on the ground after harvesting, and the straw needs to be removed from the field so as not to hinder the planting of the next crop. However, crop straw The removal process is time-consuming and laborious, and the removed straw is often discarded or burned nearby, resulting in waste of resources and air pollution. For this reason, a lot of automatic straw returning devices have occurred. [0003] For example, in the patent application document with the application number of 200810024456.6 and the application date of 2008.3.21 and the publication date of August 20, 2008, a straw returning plowing machine is disclosed, which includes a hitch device, an intermediate transmission device, a gear , ch...

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Problems solved by technology

[0003] For example, in the patent application document with the application number of 200810024456.6 and the application date of 2008.3.21 and the publication date of August 20, 2008, a straw returning plowing machine is disclosed, which includes a hitch device, an intermediate transmission device, a gear , chain transmission device, rotary cutter, tailstock, scraper control device, scraper assembly, grass pressing shaft adjustment device and grass pressing wheel, the intermediate transmission device is connected with the hitch device, and the hitch device is connected with the power Mechanical connection, the gear drives the rotary cutter through the chain transmission device, the scraper assembly is installed on the tailstock through the scraper control device, and the grass pressing wheel is installed on the hitch through the grass pressing shaft adjustment device, but the above structure Complex, costly, and inefficient

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