JPH0420563B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sorting device for a threshing machine.

A sorting device is housed in the sorting chamber of combine threshing machines and independent threshing machines without a reaping section, which separates threshed grain from processed materials such as straw waste and ear cuts generated during threshing. ing. The swinging shelf, which is the main part of this sorting device, is shaped like a box with the entire upper end and part of the lower end open.
Inside, a sorting body for grains and a sorting body for processed materials are supported across the width of the shelf. Conventionally, this swinging shelf is generally supported at one end by an eccentric cam or crankshaft, and at the other end by the free end of a swinging arm, and by rotating the eccentric cam or crankshaft, this The structure is such that the movement and the swinging of the swinging arm at the other end cause the swinging shelf to move up and down and back and forth, similar to a sieving action, to transport and sort grains and processed materials. has been done.

The sorting bodies in such swinging shelves are easily clogged with grains, processed materials, and other sorting materials, and below the swinging shelves there is a spiral conveyor for transporting the grains and second items that are about to fall. This also tends to clog the sorting material, so it is necessary to take the swinging rack out of the machine and clean it. This is especially important when changing the threshing variety or when threshing seed rice, which can improve the quality of grain. Therefore, it is necessary to clean it carefully.

However, in conventional threshing machines, when removing the swinging rack, all supporting members such as the eccentric cam and swinging arm must be disassembled and taken out to the side of the machine, which is extremely troublesome and takes a long time. Particularly in combine threshing machines with a paddy tank on the side of the machine, there was a problem in that the swinging shelves could not be removed at all and cleaning could not be carried out completely.

The present invention has been made in view of the above points, and includes a structure in which the front part of a swinging shelf, which is entered along a guide body through an opening in a rear side plate of a sorting chamber, is supported so as to be movable back and forth.
By providing a rotating body with an eccentric portion at the rear end and removably attaching a bearing that supports this rotating body to the outside of the rear side plate, the swinging shelf can be easily attached to and detached from the sorting chamber, increasing work efficiency. The present invention provides a sorting device for a threshing machine which is designed to improve the quality of grains and to ensure cleaning of the swinging shelf and the sorting room. below,
Embodiments of the present invention will be described in detail with reference to the drawings.

1 to 5 show an embodiment of a sorting device for a threshing machine according to the present invention, FIG. 1 is a longitudinal sectional view of a threshing machine implementing this, FIG. 2 is a side sectional view, and FIG. 3 is a side sectional view. 1 is a perspective view of the swinging shelf and the inside of the sorting chamber in which it is mounted, FIG. 4 is a partially cutaway front view of FIG. It is a diagram. In the figure, the frame 2 of the threshing machine 1 is integrated with a handling chamber 3, a sorting chamber 4 extending from below to the rear, a processing chamber 5 on the side of the handling chamber 3, and a waste straw processing chamber 6 behind the handling chamber 3. In the handling chamber 3, a handling cylinder 8 having a large number of handling teeth 7 arranged in a spiral shape on its circumferential surface is mounted on a shaft. Further, in the processing chamber 5 adjacent to the processing chamber 3 via a partition wall 9 having a dust exhaust port, a processing cylinder 11 having a large number of processing teeth 10 on its circumferential surface is mounted on a shaft. Reference numeral 12 is an endless belt for transporting grain culms for threshing, and is connected to the handling opening 1 of the handling chamber 6.
3, and a clamping rod 15 biased by a clamping spring 14 is pressed against the running end of the rack so as to clamp the grain culm to be transported between it and the endless belt 12. ing. An arc-shaped handling chamber receiving net 17 having a dust exhaust port 16 at the rear end is stretched below the handling cylinder 8, and a dust exhaust port 18 at the rear end is stretched below the processing cylinder 11. A processing chamber receiving screen 19 having a structure is stretched.

A swing shelf 20 is located below the handling room receiving net 17.
is mounted. This swinging shelf 20 is formed into a box shape that opens completely upward, and inside thereof a chaff sheep serving as a processing material conveying body 21 equipped with a plurality of fins arranged in front and back is mounted on the swinging shelf 20. The shelf 20 is supported across the full width of the shelf so as to close the center of the upper opening. In addition, the processed material conveyor 21
A grain sheep serving as a grain conveying body 22 equipped with a large number of fins arranged in front and back is supported across the entire width of the shelf, and behind it, a plurality of serrated fins are installed in the width direction of the shelf. A rear stroller serving as a processing material transport body 23 is disposed in parallel with and supported by the rear trolley. Furthermore, the processed material conveyor 21 and the dust exhaust port 16
A stroke rack serving as a processing material transporting body 24 having almost the same structure as the processing material transporting body 23 is installed between the two and supported by brackets 25 that stand upright from both side plates of the swinging shelf 20. Reference numeral 26 denotes a grain pan as a grain sliding body for sliding grains etc. falling through the mesh of the handling chamber receiving net 17. The swinging shelf 20 equipped with the sorting bodies 21 to 24 in this manner is provided in a detachable manner with respect to the sorting chamber 4. That is, the rear side plate 27 of the sorting chamber 4 is provided with an opening 28 that is slightly larger both vertically and horizontally than the cross section of the swinging shelf 20, so that the swinging shelf 20 can be inserted into and removed from the sorting chamber 4. It is configured. Further, rollers 29 formed by ball bearings are mounted on both sides of the central part of the swinging shelf 20 on the external protrusion of the roller shaft 30, and the rollers 29 are mounted on the inner surfaces of the left and right side plates 31 of the sorting chamber 4. A guide rail serving as a guide body 32 that guides the movement of the swinging shelf 20 by rolling the swinging shelf 29 is provided in a substantially horizontal manner. Further, in front of the guide body 32, a supporting member 33 having a U-shaped cross section and having guide surfaces facing each other in parallel is connected to the guide body 32 and connected to the side plates 31.
It is fixed with bolts to the roller 29, and is configured so that when the swing shelf 20 is installed, the rollers 29 are engaged in a manner that allows the rollers 29 to move forward and backward. On the other hand, a bearing 34 is attached from the outside to the rear plate 27 on both sides of the lower edge of the opening 28, and is rotatably driven from the driving side by a belt 36 attached to a pulley 35. A crankshaft serving as a rotating body 37 is pivotally supported. This rotating body 37 is located at the fourth position relative to the shaft support.
It has an eccentric part 37a that is eccentric as shown by the symbol t in the figure, and rollers 38 made of ball bearings fixed to both ends of this eccentric part 37a are attached to the rocking shelf 20.
By being pivotally supported by the roller case 39 at the rear end, when the rotating body 37 is rotated, the rear end of the swing shelf 20 moves circularly, and the front end moves back and forth along the guide surface of the support member 33. has been done.

Below the swinging shelf 20 configured as described above, there is a winnow 40 that has a plurality of blades and rotates in the direction shown by arrow B in the figure to generate sorting air, and a swinging shelf 20.
No. 1 spiral conveyor 41 that conveys the sorted grains falling from the lower end opening, and the processed material sorter 23
A second spiral conveyor 42 for conveying a second article falling from the conveyor belt is mounted on a shaft so that its axial direction is parallel to the second spiral conveyor 42.
A No. 2 grain lifting machine 44 that is equipped with a plurality of blades and rotates while being covered by a shell 43 is fixed to the conveyance terminal end of the No. 2 spiral conveyor 42. By rotating this, the shell 43 and the handling chamber are separated. The second product is returned to the handling chamber 3 through a second reduction cylinder 45 that connects the second product to the second product.

Furthermore, inside the waste straw processing chamber 6, there is mounted a suction fan 46, which rotates and has a plurality of blades on its outer periphery to suck up light straw waste from the material being sorted and discharge it to the outside of the machine. A straw chain 47 for conveying threshed grain culms, that is, waste straw discharged from the handling room 3 after threshing, is strung above it. 48 is a plurality of rotary blades 49 arranged in parallel in the axial direction.
This straw cutter is equipped with a groove wheel 50 and cuts the straw discharged from the straw chain 47 and scatters it on the field.

In the threshing machine 1 configured as described above, grains threshed by the handling teeth 7 of the handling cylinder 8 fall onto the grain sliding body 26 through the mesh of the handling chamber receiving screen 17. In addition, the processed materials such as straw waste, ear cuts, and hooks generated during threshing are conveyed into the handling chamber 3 by the spiral action of the extraction teeth 7, and then fall from the dust outlet 16 onto the processed material conveyor 24. Or, after being processed by the processing cylinder 11, it falls from the dust exhaust port 18. At this time, the swinging shelf 20 has a rear end that moves circularly due to eccentric action due to the rotation of the rotating body 37, and a front part that moves between the rollers 29 and the support member 3.
By engaging with 3 and moving back and forth, the entire body swings like a sieve action. Due to this rocking, the grains on the grain sliding body 26 slide toward the processing material sorting body 21, and from between the fins of the grain sorting body 21.
2 falls on top. Then, the grains are sorted by the shaking of the swinging rack 20 and the sorting wind generated by the winnowing machine 40.
It falls onto the No. 1 spiral conveyor 41 and is conveyed and collected. On the other hand, the processed material on the processed material sorting body 24 falls from between the fins onto the processed material sorting body 21 while being conveyed by the swinging of the swinging shelf 20, and and the sorting wind from Karakino 40. As a result of this sorting, some of the grains merge with the grains and are collected, and light straw waste, dust, etc.
3 It is sucked in from above and discharged outside the machine. The processed material remaining in this way, the so-called second material, is processed by the processing material sorter 2.
After falling between the fins of No. 3 onto the No. 2 spiral conveyor 42 and being conveyed, the grains are returned to the handling room 3 by the No. 2 lifting machine 44, and the sorting is repeated. On the other hand, the threshed waste straw is transported by a waste straw chain 47, cut by a waste straw cutter 48, and then distributed to the field.

In the above-mentioned threshing operation, it is necessary to take out the swinging shelf 20 from the machine as described above. In this case, after removing the belt 36, the bearing 34 is removed from the rear plate 27 of the sorting chamber 4, and the rollers 29 are moved from the support member 33 to the guide body 32 by grasping the rear end of the swinging shelf 20 and pulling it out rearward. The swing shelf 20 can be easily taken out of the machine because the swing shelf 20 moves onto the machine and rolls on it. After cleaning the inside of the swinging shelf 20 and the inside of the sorting room 4, the swinging shelf 20
When inserted through the opening 28 and pushed in, the roller 29
rolls on the guide body 32, and is engaged between the guide surfaces of the support member 33 that is continuous with the front end of the guide body 32. Thereafter, the bearing 34 is installed and the belt 36 is hung, thereby completing the cleaning work.

In this embodiment, a crankshaft is illustrated as the rotating body 37, but an eccentric cam may be supported by the bearing 34, and the swinging shelf 20 may be supported by the eccentric portion of the eccentric cam.

As is clear from the above description, in the sorting device for a threshing machine according to the present invention, an opening 28 is provided in the rear side plate 27 of the sorting chamber 4, and the rocker enters through the opening 28 along the guide body 32. The front part of the movable shelf 20 is supported by the support member 33 so as to be movable back and forth, and a rotating body having an eccentric part is provided at the rear end, and a bearing for pivotally supporting this rotating body is removable on the outside of the rear side plate. By installing it, the rotating body 3 can be accessed from the outside.
Since the swinging shelf 20 can be attached to and detached from the sorting chamber 4 by simply removing the bearings 7 and moving the swinging shelf 20 forward and backward, cleaning and maintenance of the swinging shelf 20 and the sorting chamber 4 are easy. , inspection, etc. can be carried out extremely easily and reliably, improving work efficiency and improving grain quality through thorough cleaning.

[Brief explanation of drawings]

1 to 5 show an embodiment of a sorting device for a threshing machine according to the present invention, FIG. 1 is a longitudinal sectional view of a threshing machine implementing this, FIG. 2 is a side sectional view, and FIG. 3 is a side sectional view. 1 is a perspective view of the swinging shelf and the inside of the sorting chamber in which it is mounted, FIG. 4 is a partially cutaway front view of FIG. It is a diagram. 1... Threshing machine, 4... Sorting room, 20... Rocking shelf, 27... Rear side plate, 28... Opening, 29...
Roller, 31... Side plate, 32... Guide body, 33...
Supporting member, 37... Rotating body, 37a... Eccentric part.

Claims (1)

[Claims] 1 An opening 28 for inserting and removing the swinging shelf 20 is provided in the rear side plate 27 of the sorting chamber 4, and the left and right side plates 3 of the sorting chamber are
A guide body 32 for advancing and retracting the swinging shelf is provided inside the swinging shelf 20, and an eccentric portion 37a is provided at the rear end of the swinging shelf 20.
A support member is provided with a rotating body 37 having a rotating body, a bearing 34 for pivotally supporting the rotating body is removably attached to the outside of the rear side plate 27, and the front part of the swinging shelf 20 is continuously formed at the front end of the guide body. A sorting device for a threshing machine, characterized in that the vertical movement is restricted by 33 and supported so as to be freely movable back and forth.