CN106358576B - Grazing Brassica napus stalk chopper for combine harvester - Google Patents

Abstract

The invention discloses a feed rape stalk chopping device for a combine harvester, which comprises a chopping knife shaft installed in a threshing chamber, multiple sets of moving knife combinations arranged on the chopping knife shaft at equal intervals, and covering The material blocking roller on the screen, one end of the chopping knife shaft is provided with a sprocket connected to the power, and the side wall of the material blocking roller is provided with a plurality of fixed blades that are respectively matched with multiple sets of moving knives. . The device of the present invention is replaced with the original grain threshing device in the threshing chamber of the combine harvester, that is, the device is installed in the threshing chamber of the combine harvester, and the combine harvester can be used to harvest and chop forage rapeseed, and this The replacement of the grain threshing device can be carried out alternately, thereby realizing the alternate operation of combined grain harvesting and forage rape stalk chopping. Because the device has a reasonable design and a simple structure, the device is not only very convenient to disassemble and assemble, but also has low processing and manufacturing costs, and can also improve the utilization rate of the combine harvester.

Description

Rapeseed stalk chopping device for combine harvesters

technical field

The invention belongs to a supporting device of agricultural machinery, and in particular relates to a feed rape stalk chopping device used for a combine harvester.

Background technique

Rapeseed is the main oil crop in my country, and its planting area and total output both rank first in the world. Rapeseed is not only an important oil crop, but its plants can also be used as green fodder, green manure and silage due to its fast growth and high vegetative yield. The Yangtze River Basin is the main production area of winter rape crops in my country. Planting forage rape not only effectively broadens the utilization range of rapeseed, but also helps to alleviate the problem of lack of green fodder for herbivorous livestock in winter and spring in the Yangtze River Basin. There is no special forage rapeseed harvester at present, and green forage harvesters such as corn are used to harvest and chop forage rapeseed mostly. Due to the high water content of the forage rapeseed and the small discharge port of the green forage harvester, the discharge port of the green forage harvester is easily blocked during field operations. Therefore, this green forage harvester is not suitable for mechanized harvesting and cutting. Rapeseed for feeding. Although the combine harvester is a multi-functional and multi-purpose agricultural machine, and is widely used for harvesting and chopping various crops and plants, it cannot be used because it does not have a chopping device specially for forage rape stalks. Rapeseed is used for harvesting and chopping.

Contents of the invention

The purpose of the present invention is to address the deficiencies of the above-mentioned technologies, and to provide a forage rape stalk chopping device for combine harvesters, which can be easily installed on the combine harvester and complete the harvesting and cutting of forage rape stalks at one time. Shredding operation, to achieve mechanized operation.

In order to achieve the above-mentioned purpose, the forage rape stalk chopping device for the combine harvester designed by the present invention includes a chopping knife shaft installed in the threshing chamber, and multiple sets of moving knives arranged on the chopping knife shaft at equal intervals. Combining and covering the blocking roller plate on the screen, one end of the chopping knife shaft is provided with a sprocket connected to the power, and the side wall of the blocking roller plate is provided with a plurality of moving knives respectively combined with multiple sets of moving knives. Matching fixed blade.

Further, each set of the movable knife combination includes a circular cutter head and a support that are both set on the chopping knife shaft, and two sets of movable blades that are symmetrically arranged on the circular cutter head with the center of the circular cutter head as the center. The circular cutter head is connected to the support by bolts, and the support is welded to the chopping knife shaft, and the movable blade groups on the adjacent circular cutter heads are arranged in a staggered manner; each group of the movable blade groups consists of two symmetrically arranged Moving blades on both sides of the cutter head.

Further, the other end of the chopping knife shaft is provided with a round end disc, and several support rods facing the discharge opening are arranged between the round end disc and the adjacent round cutter disc, each of the support rods Several discharge rods are arranged at equal intervals on the top, and several support rods are evenly arranged along the circumference with the chopping knife shaft as the center.

Further, spacers are lined between each movable blade and the circular cutter head.

Compared with the prior art, the present invention has the following advantages:

1. The device of the present invention is replaced with the original grain threshing device in the threshing chamber of the combine harvester, that is, the device is installed in the threshing chamber of the combine harvester, and the combine harvester can be used to harvest and chop forage rapeseed, and, This replacement with the grain threshing device can be carried out alternately, and then the combined operation of grain harvesting and the cutting operation of forage rape stalks can be realized alternately. Because the device has a reasonable design and a simple structure, the device is not only very convenient to disassemble and assemble, but also has low processing and manufacturing costs, and can also improve the utilization rate of the combine harvester.

2. After the forage rape stalks enter the device of the present invention, the high-speed rotating movable blade cooperates with the fixed blade to chop the forage rape stalks, and the chopped forage rape stalks pass through the rows evenly distributed on the support bars. The material rod is discharged from the discharge port of the threshing chamber, which can complete the cutting, conveying and crushing of forage rape at one time, not only can realize the mechanized operation of harvesting and chopping of forage rape stalks, but also can greatly reduce the labor of manual harvesting operations strength.

Description of drawings

Fig. 1 is the structure and installation schematic diagram of the forage rape stalk chopping device for combine harvester of the present invention;

Fig. 2 is the structural representation of chopping knife shaft;

Fig. 3 is the structure and assembly diagram of moving knife combination;

Fig. 4 is a schematic diagram of the position of the movable blade group arranged in a double helix on the chopping knife shaft.

In the figure: threshing chamber 1, screen 1a, discharge port 1b, feed port 1c, main shaft bearing 1d, chopping knife shaft 2, moving knife assembly 3, circular cutter disc 3a, support 3b, moving blade group 3c, Moving blade 3c1, cushion block 3d, material retaining roller plate 4, side wall 4a, sprocket wheel 5, fixed blade 6, round end plate 7, support rod 8, discharge rod 9.

Detailed ways

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

As shown in Fig. 1, the forage rape stalk chopping device for the combine harvester of the present invention is installed in the threshing chamber 1 of the combine harvester. The discharge port 1b and the feed port 1c, and the spindle bearing 1d at both ends. The forage rape stalk chopping device of this embodiment includes a chopping knife shaft 2 installed in the threshing chamber 1 of the combine harvester, multiple sets of moving knife combinations 3 arranged on the chopping knife shaft 2 at equal intervals, and a sieve covering The retaining roller plate 4 on the net 1a is provided with a sprocket 5 connected to power at one end of the chopping knife shaft 2, and a plurality of movable knife combinations 3 are provided on the side wall 4a of the retaining roller plate 4 to cooperate with multiple sets of moving knife combinations 3 respectively. fixed blade 6.

As shown in Fig. 2 and Fig. 3, the movable knife assembly 3 includes a plurality of circular cutter heads 3a (preferably 6 to 8) and supports 3b all set on the chopping knife shaft 2, and two groups of circular cutter heads The center of the 3a circle is the moving blade group 3c symmetrically arranged on the circular cutter head 3a. The circular cutter head 3a is connected to the support 3b through bolts, and the support 3c is welded and fixed to the chopping knife shaft 2. The distance between the blades is 120-160mm (preferably 140mm), and the moving blade groups 3c on the adjacent circular cutter heads 3a are arranged in a staggered manner, so that all the moving blade groups 3c are in a double helix as shown in Figure 4 on the chopping knife shaft 2. Arranged so that the chopped forage rape stalks are spirally conveyed outward. Each group of moving blade groups 3c includes two moving blades 3c1 symmetrically arranged on both sides of the circular cutter head 3a. The size of block 3d and cushion block 3d are both 50×30×20mm. In addition, the number of fixed blades 6 is the same as that of the circular cutter head 3a, that is, each circular cutter head 3a is correspondingly provided with a fixed blade 6, so that the movable blades 3c1 in double helical distribution and the fixed blades arranged on the side wall 4a The blades 6 cooperate to cut off the forage rape stalk.

As shown in Figure 1 and Figure 2, the other end of the chopping knife shaft 2 is provided with a round end disc 7, and several supports facing the discharge port 1b are provided between the round end disc 7 and the adjacent round cutter disc 3a. Rods 8, the two ends of each support rod 8 are respectively welded on the round end disk 7 and the adjacent circular cutter head 3a, and each support rod 8 is provided with several discharge rods 9 at equal intervals. In this embodiment, there are preferably three support rods 8 and discharge rods 9, and the distance between the discharge rods 9 is 110-130 mm (preferably 120 mm) due to the limitation of the width of the discharge port 1b.

When installing, fix the two ends of the chopping knife shaft 2 in the main shaft bearing 1d, and adjust the retaining roller plate 4 covering the screen 1a to completely cover all the screen holes of the screen 1a, so as to prevent the material from passing through the screen. The mesh of 1a leaks out. By replacing the grain threshing device in the detachment chamber, the alternate replacement of combined grain harvesting operation and forage rape stalk chopping operation can be realized.

The power of the rapeseed stalk chopping device for forage of the present invention is driven by the main shaft of the engine of the combine harvester through a chain, and the chopping knife shaft 2, the circular cutter head 3a and the movable blade 3c1 are driven to rotate at a high speed through the sprocket 5 in turn, and the rapeseed stalk for forage is rotated at a high speed. After the stalks enter the threshing chamber 1 through the feed port 1c, the high-speed rotating movable blade 3c1 cooperates with the fixed blade 6 to chop the forage rape stalks, and the chopped forage rape stalks pass through the rows evenly distributed on the support rods 8. The material rod 9 is discharged from the discharge port 1b, and the transfer material vehicle collects and transfers the crushed stalks discharged from the discharge port 1b for fresh feeding or as raw material for silage.

Claims (2)

1. a kind of grazing Brassica napus stalk chopper for combine harvester, it is characterised in that: including being mounted on threshing chamber (1) The moving knife combination (3) and be covered on sieve (1a) that interior chopping cutter shaft (2), more sets are set in qually spaced in chopping cutter shaft (2) Backgauge rolling plate (4), described chopping cutter shaft (2) one end is equipped with for the sprocket wheel (5) that is connected with power, the backgauge rolling plate (4) one Side wall (4a) is equipped with more combining the ledger-plate (6) that (3) match with more set moving knife respectively；

The combination of moving knife described in every set (3) includes the dise knife disk (3a) and support (3b) and two being sleeved in chopping cutter shaft (2) Group is symmetricly set on the cutting blade group (3c) on dise knife disk (3a) centered on the center of circle dise knife disk (3a), and the dise knife disk (3a) is logical It crosses bolt to be connected with support (3b), the support (3b) and chopping cutter shaft (2) welding, the cutting blade group on adjacent dise knife disk (3a) (3c) is in interlaced arrangement；Cutting blade group (3c) described in every group includes the cutting blade that two panels is symmetricly set on the two sides dise knife disk (3a) (3c1)；Cushion block (3d) is lined between the every cutting blade (3c1) and dise knife disk (3a).

2. the grazing Brassica napus stalk chopper according to claim 1 for combine harvester, it is characterised in that: described The other end for shredding cutter shaft (2) is equipped with nose circle disk (7), and several are equipped between the nose circle disk (7) and adjacent dise knife disk (3a) The support rod (8) of face discharge gate (1b) is equidistantly provided with several discharge bars (9) on the every support rod (8), if Support rod described in dry root (8) is circumferentially evenly arranged centered on shredding cutter shaft (2).