CN201839642U - Wheat and rice straw grinder adopting biaxial crossed disk hobs - Google Patents

Abstract

The utility model discloses a two-axis type cross disc hob wheat and rice straw pulverizer, which comprises a main frame, on which a driving shaft and a driven shaft are rotatably installed, and a plurality of sets of mutual The cooperating cross disc hobbing blade is fixedly provided with a fixed blade corresponding to the cross disc hobbing blade on the inner wall of the main frame bottom. The utility model adopts the mechanism of double-axis cross disc hob rotating and shearing straw, and uses the high-speed rotation of the movable knife and the cooperation of the fixed knife to crush the straw, further reducing the length of straw crushing, and the average pass rate of straw crushing with a length of less than 5cm Both are greater than 90%, and the performance of the double-shaft straw grinder is good, and the goal of energy saving has been achieved.

Description

Double Shaft Cross Disc Hob Wheat Rice Straw Grinder

technical field

The utility model relates to the technical field of agricultural machinery and tools, in particular to a biaxial cross disc hob wheat and rice straw pulverizer.

Background technique

At present, the well-known straw grinders mainly have two types of equipment: 1) The straw grinder matched with the tractor; this type of equipment is used to crush the field straw separately after harvesting, because this technology adds one field tillage , The production cost of farmers has increased, so there is no large-scale adoption at present. 2) Straw pulverizer supporting the combine harvester; this kind of equipment is the focus of research and development in the current straw pulverizer. The typical representative model is the straw grinder that uses the high-speed rotation of the moving knife to crush the straw; the existing domestic full-feed wheat and rice combine harvester has a small grass outlet, and it is easy to cause blockage and consumption when matched with the existing straw grinder. Due to the problems of high power and low qualified rate of straw crushing, it is urgent to develop straw crushing and returning machines with high straw returning rate, low power consumption and better meeting the requirements of agricultural technology. Based on the requirements of straw returning to the field for recycling, with the goal of high efficiency and energy saving, a double-shaft cross disc hob wheat and rice straw grinder suitable for full-feed combine harvesters was designed and developed.

Utility model content

The utility model provides a double-axis type cross disc hob wheat and rice straw pulverizer. By adopting the mechanism of the double-axis type cross disc hob group to rotate and cut the straw, the high-speed rotation of the moving knife and the cooperation of the fixed knife are used to carry out the straw grinding. Crushing, further reducing the length of straw crushing, the average pass rate of straw crushing less than 5cm in length is greater than 90%, the performance of the double-shaft straw crusher is good, and the goal of energy saving is achieved.

The technical scheme adopted in the utility model is:

The double-shaft cross disc hob wheat and rice straw grinder includes a main frame on which a driving shaft and a driven shaft are rotated. One end of the driving shaft is equipped with a pulley, the other end is equipped with a driving gear, and the driven shaft is installed on the main frame. A driven gear meshing with the driving gear is installed on the top, and multiple sets of cross-disc hobbing blades that cooperate with each other are respectively installed on the driving shaft and the driven shaft. A fixed blade with relative blades.

An anti-winding disc and a plant-holding cutter disc are installed on the driven shaft.

The driving shaft and the driven shaft are respectively installed in the main frame through self-aligning bearings.

The driving shaft and the driven shaft are sleeved with a spacer, and a cross disk hobbing blade is installed outside the spacer.

The utility model adopts the mechanism of double-axis cross disc hob rotating and shearing straw, and uses the high-speed rotation of the moving knife and the cooperation of the fixed knife to crush the straw, further reducing the length of straw crushing, and the average pass rate of straw crushing with a length of less than 5cm Both are greater than 90%, and the performance of the double-shaft straw grinder is good, and the goal of energy saving has been achieved.

The utility model is installed at the grass outlet of the combine harvester, and is used for chopping and breaking the straw discharged after threshing, and throwing the straw in the field to carry out recycling of the straw. When working, the driving shaft of the straw shredder is connected with the power output shaft of the combine harvester through the pulley, and the driving shaft generates relative motion with the driven shaft through the gear transmission device, which drives the two-axis disc hob cutting knife group to rotate at high speed to move the knife High-speed rotation and fixed knife cooperate to crush straw.

Compared with the prior art, the utility model has the following advantages:

1. The method of crushing straw with double-axis cross disc blades, based on the working mechanism of cutting straw, improves the efficiency of straw crushing and reduces the power of crushing straw.

2. The gear transmission method is used to increase the reliability and stability of the drive of the main and driven cutter shafts. During design, the appropriate transmission ratio can be selected by changing gears according to the actual production needs of the rotational speed ratio of the two shafts.

3. Self-aligning bearings are used for the installation between the main and driven shafts and the main frame, which can allow large coaxiality errors to a certain extent, reduce processing costs and facilitate assembly.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a side view of the utility model.

Detailed ways

Referring to the accompanying drawings, the double-axis cross disc hob wheat and rice straw pulverizer includes a main frame 1 on which a driving shaft 3 and a driven shaft 12 are rotatably installed. The bearing 5 is installed in the main frame, the self-aligning bearing is installed in the bearing seat 10, the pulley 2 is installed on one end of the driving shaft, the driving gear 8 is installed on the other end, and the driven gear meshing with the driving gear is installed on the driven shaft 9. The driving shaft and the driven shaft are respectively equipped with multiple groups of cross-disc hobbing blades 4 that cooperate with each other. The driving shaft and the driven shaft are equipped with a spacer 7, and the cross-disc hob is installed outside the spacer. The main frame The inner wall of the bottom is fixedly provided with the fixed blade 6 that matches with the cross disc hob blade, and the anti-wrapping disc 11 and the plant cutter head 14 are installed on the driven shaft.

Claims (4)

1. The double-shaft cross disc hob wheat and rice straw grinder includes a main frame on which a driving shaft and a driven shaft are installed in rotation. One end of the driving shaft is equipped with a pulley, and the other end is equipped with a driving gear. The driving shaft is equipped with a driven gear which meshes with the driving gear. There is a fixed blade corresponding to the cross disc hob blade. 2. The double-shaft cross disc hob wheat and rice straw pulverizer according to claim 1, characterized in that: the driven shaft is equipped with an anti-winding disc and a plant-holding cutter disc. 3. The double-shaft cross disc hob wheat and rice straw pulverizer according to claim 1, characterized in that: the driving shaft and the driven shaft are respectively installed in the main frame through self-aligning bearings. 4. According to claim 1, the double-axis type cross disc hob wheat and rice straw grinder is characterized in that: the driving shaft and the driven shaft are fitted with a spacer, and the cross disc hob is installed outside the spacer. blade.

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