JPS6331551Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention includes, for example, a grain header having a reel for raking in uncut grain culms, a cutting blade, etc., a supply chamber having a reaped grain culm supply belt installed therein and connected to the header; The present invention relates to a combine harvester that includes a threshing section that has a handling barrel and a grain sorting mechanism and is connected to the supply chamber, and threshes grain by continuously feeding harvested grain culms into the handling chamber of the threshing section.

Conventionally, as shown in Japanese Utility Model Application Publication No. 52-73270, there has been a technique in which a straw feeding rack is provided on the upper surface of a straw walker at an angle with respect to the swinging direction.

However, in the above-mentioned conventional technology, since the rack is integrally fixed to the straw walker, the swinging of the straw walker only changes the position of action of the rack on the straw. Since the direction was the same as the swinging direction of the straw walker, it was not possible to disperse the straw in the direction perpendicular to the swinging direction of the straw walker.
There are problems in that it is not easy to improve the sorting function of the rack and the grain recovery efficiency of the straw walker.

However, the present invention provides a swing for a combine harvester in which threshed waste straw is oscillatedly transferred to the rear of the machine by a straw walker, and a rack for feeding the waste straw is provided on the upper surface of the straw walker at an angle with respect to the swinging direction. In the dynamic sorting device, one end of the rack is rotatably attached to a straw walker by a fulcrum arm shaft, a weight is attached eccentrically to the fulcrum arm shaft, and the weight is moved by swinging of the straw walker. This device is characterized in that it is configured to change the direction in which the rack is sent out.

Therefore, as the straw walker swings, the weight moves and changes the feeding direction of the rack, so that the straw can be dispersed by the rack in a direction perpendicular to the swinging direction of the straw walker, and the straw is Since the inertia of the weight generated by the swinging of the walker is used to change the feeding direction of the rack, it is possible to easily improve the sorting function of the rack with a simple mounting structure, and the straw can be moved by swinging and rolling. Furthermore, it is possible to easily improve the grain collection efficiency of the straw walker, which is sent out in a meandering manner by rolling the grain over its side, and to increase the sorting capacity.

An embodiment of the present invention will be described in detail below with reference to the drawings.

Fig. 1 is an overall side view of the combine harvester, and Fig. 2 is a plan view of the same. 7 is a grain tank for storing the grains of the threshing section 4 to be taken out through the grain lifting tube 8; 9 is a grain tank mounted on the machine 1; 9 is the threshing section 4;
A reaping section 11 is installed at the lower front of the threshing section 4 so as to be able to be raised and lowered via a hydraulic cylinder 10. The reaping section 11 is equipped with a driver's seat 12 and a steering handle 13, and is a driver's cab fixedly installed at the upper front of the threshing section 4.

The reaping section 9 is composed of a grain header 14 for receiving uncut grain culms, and a supply chamber 15 connected to the rear center of the header 14 to feed the reaped grain culms to the threshing section 4. The grain header 14 is equipped with a grain culm scraping reel 16, a reciprocating cutting blade 17, and a grain culm scraping auger 18. The culm is configured to be fed into the threshing section 4 by conveyance of a grain culm supply belt 19 disposed inside the supply chamber 15.

As shown in FIG. 3, a grain tank 7 is disposed above the handling chamber 20 in which the handling cylinder 5 is installed, a concave 21 is attached to the lower peripheral side of the handling cylinder 5, and a grain tank 7 is disposed at the rear of the handling cylinder 5. A dust cylinder 22 is installed.

In addition, a swing sorting board 25 is horizontally mounted above the first and second conveyors 23 and 24 and is driven to swing back and forth.
The grain sorting mechanism 6 is composed of a wind selection fan 26 that blows sorting air onto the sorting board 25, and a straw walker 27 that is horizontally suspended above the sorting board 25 and is driven to swing back and forth. At the same time, a feed pan 28, a chaff sieve 29, and a grain sieve 30 are provided on the swinging sorting board 25, and the grains falling below the concave 21 and straw walker 27 are separated and sorted by the swinging sorting board 25, The straw walker 27 is configured to discharge straw such as straw waste taken out through the dust removal cylinder 22 to the outside of the machine.

Further, the grains are taken out to the grain tank 7 through the first conveyor 23 and the grain lifting cylinder 8 connected thereto, and the straw waste and grains are taken out through the return lifting grain cylinder 31 connected to the second conveyor 24. The structure is such that the second reduced product containing the above is returned to the upper side of the handling cylinder 5.

In the grain tank 7, the grain outlet 32 of the grain lifting cylinder 8 is exposed, and a grain discharge conveyor 33 is installed at the bottom of the tank 7. The grains put into the container 7 are taken out to the outside by the discharge conveyor 33.

The straw walker 27 has a walker top plate 35 with a large number of grain drop ports 34 formed into four rows of sections 35a on the left and right sides, and each section 35a has sawtooth shaped fish bags for feeding straw in the front and back direction. A plurality of straw feeding racks 36 are arranged in an inclined manner and the directions of inclination are alternately different.
When the straw walker 27 swings back and forth, the rack 36 is operated obliquely so that the waste straw is reversed and sent diagonally rearward.

The rack 36 has a fulcrum arm shaft 37 fixed to one side of the bottom plate 36a, and a bending tip of the arm shaft 37 that protrudes downward from a fulcrum hole 38 formed in the walker top plate 35 has a tilting direction variable screw. A weight 39 is attached, and the weight 39 is appropriately moved at the forward and backward swinging ends of the straw walker 27, so that the inclination direction of each of the racks 36 is made different between forward and backward swings. ing.

The present embodiment is constructed as described above, and uncut grain culms are introduced into the grain header 14 via the reel 16, and the culm of the uncut grain culms is cut by the cutting blade 17.
At the same time, the cut grain culm is scraped by the scraping auger 18 and collected in the center of the grain header 14, and the cut grain culm is conveyed to the threshing section 4 by the supply belt 19. While the straw is fed into the handling chamber 20 and successively threshed by the threshing action of the handling cylinder 5, the threshed straw is scraped backward by the dust removal cylinder 22 and discharged to the feeding start end of the straw walker 27. It is something that will be done.

The waste straw discharged from the feed start end of the straw walker 27 is supported by a number of straw feeding racks 36 arranged on the walker top plate 35, and is fed to the racks 36 by the swinging motion of the straw walker 27.
The straw is sent out sequentially diagonally backward along the extension, and the discharged straw is reversed each time it moves diagonally backward.
As a result, the grains remaining in the waste straw, i.e., the stubble grains, are promoted to fall from the waste straw, and are completely separated and sorted out from the waste straw during its transportation.

Furthermore, the straw walker 27 is the fifth straw walker.
When each rack 36 swings forward as shown by the solid line arrow in the figure, it is in the state shown by the solid line in the figure, and when it reaches the end of its forward movement, the weight 39 of the rack 36 is positioned in the state shown by the imaginary line in the figure due to its movement inertia. As the rack 36 moves, the tilted state of the rack 36 is changed from the solid line position in the figure to the imaginary line position in the figure. As a result, straw walker 2
During one stroke of 7, the straw is moved horizontally to the left or right by the horizontal swing range of the rack 36. Even with the synergistic shaking action of the motion, the grains can be separated and sorted more reliably.

As is clear from the embodiments described above, the present invention allows the straw walker 27 to oscillate and transfer the threshed waste straw to the rear of the machine body, and tilts the upper surface of the straw walker 27 with respect to the direction of the swing to remove the straw. In a swing sorting device for a combine harvester provided with a feed rack 36, one end of the rack 36 is rotatably mounted on a straw walker 27 by a fulcrum arm shaft 37.
At the same time, a weight 39 is attached eccentrically to the fulcrum arm shaft 37, and the weight 39 is moved by the swinging of the straw walker 27 to change the feeding direction of the rack 36. Since the weight 39 moves due to the swinging of the walker 27 and changes the feeding direction of the rack 36, the straw can be dispersed by the rack 36 in a direction perpendicular to the swinging direction of the straw walker 27. Since the feeding direction of the rack 36 is changed using the inertial force of the weight 39 generated by the swinging of the straw walker 27, the sorting function of the rack 36 can be easily improved with a simple mounting structure. This has practical effects such as easily improving the grain collection efficiency and increasing the sorting capacity of the straw walker 27, which sends out waste straw in a meandering manner through rocking and rolling motions and rolling motions. be.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is an overall side view of the combine harvester, Fig. 2 is a plan view thereof, Fig. 3 is a cross-sectional explanatory view of the threshing section, and Fig. 4 is a straw walker. FIG. 5 is a plan view of the main part, and FIG. 6 is a side view of the main part. 27...Straw walker, 36...Rack for feeding straw.

Claims (1)

[Scope of utility model registration request] A swing sorting device for a combine harvester in which threshed waste straw is oscillatedly transferred to the rear of the machine body by a straw walker 27, and a rack 36 for sending the waste straw is provided on the upper surface side of the straw walker 27 at an angle with respect to the swinging direction. , one end side of the rack 36 is rotatably attached to the straw walker 27 by a fulcrum arm shaft 37, and the fulcrum arm shaft 37
A swing sorting device for a combine harvester, characterized in that a weight 39 is attached eccentrically to the straw walker 27, and the weight 39 is moved by the swing of the straw walker 27 to change the feeding direction of the rack 36.