A New Combined Harvester Chopping Device

Abstract

The invention relates to the field of harvesters, in particular to a novel combined harvester shredding device. The novel combined harvester shredding device comprises a weed smashing rubbing plate arranged at the rear end of a top cover, rubbing teeth arranged on a tooth frame and matched with the weed smashing rubbing plate, and a weed smashing cutter assembly arranged below a material outlet. The weed smashing cutter assembly comprises a discharging frame arranged at the rear end of the rack, a frame cover arranged on the discharging frame, a discharging cavity located below the frame cover, a discharging cylinder arranged on the discharging frame and located in the discharging cavity, fixed cutters and movable cutters, wherein the fixed cutters are arranged on the discharging frame, and the movable cutters are arranged on the discharging cylinder. The material outlet is communicated with the discharging cavity, and a discharging port is formed in the bottom of the discharging frame. Through movement inertia of a threshing cylinder, straw or weeds to be discharged out are shredded through the rubbing force of the teeth and the rubbing plate for the first time and then separated. The straw or the weeds fall to be conveyed to the weed smashing cutter assembly to be shredded at last through the shredding action of the movable cutters and the fixed cutters, and then the straw or the weeds are discharged through the discharging port. The novel combined harvester shredding device is simple in structure, low in cost, convenient to install, good in shredding effect, low in weed winding rate and high in shredding efficiency.

Description

technical field [0001] The invention relates to the field of harvesters, in particular to a novel combined harvester shredding device with low probability of entanglement and high shredding efficiency. Background technique [0002] Under the current situation, smog has become the number one public enemy of environmental pollution, and the burning of straw and weeds will produce a large amount of smog, causing environmental pollution. To solve the problem of burning straw, the straw must be chopped up as much as possible and remixed into the soil It is used as a fertilizer, so the requirements for the straw cutting of the harvester are relatively high. At present, the structure of the common chopping device for combine harvesters in China is to install a chopping device at the position of the grass outlet at the tail of the harvester. The chopping device mainly includes a fixed knife and a moving knife. Clockwise rotation (viewed from drive sprocket side). This structure ha...

AI Technical Summary

Problems solved by technology

This structure has a certain effect on the shredding of straw, but it also has its shortcomings

1. The fixed knife is installed under the moving knife, and the moving knife rotates counterclockwise, and the grass is thrown to the vibrating screen to easily form air convection, resulting in poor cleaning effect

2. The structure of the fixed knife is single. The toothed fixed knife harvests rice and is easy to entangle grass. The toothless fixed knife harvests wheat.

3. The diameter of the rotating cylinder of this structure is small, the number of moving and fixed knives is large (20-24 moving and fixed knives each), the handover distance of moving and fixed knives is large, the handover area is also large, and the power consumption of grass cutting operation is large, which is easily affected Harvesting effect

4. The number of moving and fixed knives is large, the corresponding maintenance cost is high, and maintenance is time-consuming

For example, the application number: 200920283859.2 disclosed "the shredding device with throwing function matched with the combine harvester" includes a shredding knife shaft arranged on the shredding device box, and a shredding power transmission belt connected to the outer end of the shredding knife shaft. The lower end of the shredding device box supports the throwing impeller, and its structure only adds a throwing impeller, which still has the above-mentioned problems.

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