CN100376132C - Rapeseed stem pre-cutting device - Google Patents

Abstract

The present invention relates to a rape stalk pre-cutting device which is mainly used for preliminarily shredding rape entering a conveying groove to solve problems of coarse rape stalks, difficult conveyance and unsmooth threshing. Two disk knife blades of the present invention are arranged on a conveying groove frame by a knife shaft; the rotating direction of the knife blades is consistent with the motion direction of a conveying scraper on the connecting part of a cutting table auger and the conveying groove; the line speed of a knife edge is greatly higher than the speed of the conveying scraper. Cutting is realized by utilizing speed differences.

Description

Rapeseed stem pre-cutting device

technical field

The invention relates to a rapeseed stalk pre-cutting device used on a rapeseed combine harvester, which is mainly used for preliminary chopping of rapeseed stalks entering a conveying trough.

Background technique

At present, with the adjustment of the industrial structure, the planting area of rapeseed in my country is increasing, and the mechanized harvesting of rapeseed is imminent. In the mechanized harvesting of rapeseed, due to the thick stalks of rapeseed and high moisture content, the stalks are much larger than those of wheat and rice. If the stalks are not treated, they are prone to blockage in the conveying trough, and it is not conducive to subsequent threshing operations. At present, my country's rapeseed combine harvester is still in the research and development and testing stage, and no mature model has been applied in a large area. Therefore, there is no report on the rapeseed stem pre-cutting device.

The patent No. is: CN IO55856A's rotary disc type manpower harvester, when pushing forward by manpower, the disc knife is hindered and rotated to cut, only played the effect of header cutting, not pre-cutting the stalk. The CN 1520929A pulverizing device of Japan Co., Ltd. utilizes the disc cutter to cut the thick waste, but it is not applied on the rapeseed harvesting machinery.

Contents of the invention

The invention provides a rape stalk pre-cutting device used on a rapeseed combine harvester, which includes a pulley, a disc knife, a bearing, a knife shaft and a bearing bracket, and is characterized in that the device is located at the connection between the header auger and the conveying trough At the position, two disc blades are installed on the cutter shaft, and the cutter shaft is installed on the bottom of the conveying trough through bearings, and the rotation direction of the disc cutter is consistent with the movement direction of the scraper conveyor chain.

The disc knife is connected to the knife shaft by bolts, and the bearing bracket is welded to the bottom of the conveying trough. The linear speed at the knife edge is much higher than the speed of the conveying scraper, and the speed difference is used to realize cutting.

The rapeseed stalk pre-cutting device provided by the present invention can realize the pre-cutting of rapeseed stalks during mechanized harvesting, increase the conveying effect, reduce the blockage in the conveying trough, and improve the threshing effect at the same time, the structure is simple, the processing is convenient, and the price is low Inexpensive, thereby solving the problem of difficult transportation of thick rapeseed stalks.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Figure 1 is a schematic diagram of the positions of the header, the pre-cutting device, and the conveying chute.

Figure 2 is an enlarged view of I.

Fig. 3 is a schematic top view of the pre-cutting device and the conveying trough.

Figure 4 is an enlarged view of II.

Fig. 5 is a front view of the pre-cutting device.

In the figure: 1. header; 2. header auger: 3. passive sprocket; 4. scraper conveyor chain; 5. conveyor trough; 6. driving sprocket; 7. threshing drum; 8. pre-cutting device; 9. Narrow groove; 10. Pulley; 11. Disc cutter; 12. Bearing; 13. Cutter shaft; 14. Bearing bracket

Detailed ways

Figure 5 is a front view of the pre-cutting device, including a pulley 10, a disc cutter 11, a bearing 12, a cutter shaft 13 and a bearing bracket 14. Disc cutter 11 is connected on the flange of cutter shaft 13 by bolt, and as shown in Figure 1, the cutter shaft 13 of pre-cutting device is connected with bearing support 14 by bearing 12, and bearing support 14 is welded on delivery groove 5 bottoms, is positioned at At the junction of the header auger 2 and the lowermost end of the scraper conveying chain 4, two narrow grooves 9 are arranged at the bottom of the conveying trough 5, and the disc cutter is placed therein. The direction of rotation of the disc cutter 11 is consistent with the direction of motion of the scraper conveyor chain 4. The diameter of the preferred disc cutter 11 is 220mm, and the rotating speed is 1500r/min. Realize cutting, and at the same time facilitate the transportation of rapeseed.

During work, the power is input by the intermediate transmission shaft on the conveying trough 5, the belt pulley 10 is driven to rotate through the V-belt, and the cutter shaft 13 is further driven to rotate through the key. Since the disc cutter 11 is fixed on the flange of the cutter shaft 13 by bolts, Disc cutter 11 rotates at a high speed. When the rape stalks are conveyed backward by the header auger 2, the disc knife 11 located between the header auger 2 and the driven sprocket 3 of the conveying trough forms a cutting action on the stalks, and the pre-cut stalks are scraped Under the action of the plate conveying chain, it continues to move upward through the conveying trough 5 until it enters the threshing drum 7 to realize subsequent operations such as threshing and separation.

Claims (2)

1. Rapeseed stalk pre-cutting device, including pulley (10), disc knife (11), bearing (12), knife shaft (13) and bearing bracket (14), characterized in that: the device is located on the header auger (2) and the joint of the delivery trough (5), two disc blades (11) are installed on the cutter shaft (13), and the cutter shaft (13) is installed on the bottom of the delivery trough (5) through the bearing (12). The direction of rotation of the disc cutter (11) is consistent with the direction of motion of the scraper conveyor chain (4). 2. The rapeseed stalk pre-cutting device according to claim 1, characterized in that: the disc knife (11) is connected to the knife shaft (13) by bolts, and the bearing bracket (14) is welded to the bottom of the conveying trough (5) .

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