JPH0520134Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a swing sorting device in a threshing machine for threshing grain culms.

(b) Conventional technology Conventionally, a discharge port was provided at the rear of the receiving screen in the handling room (with the supply port side facing forward), and a swinging sorting body was installed from the bottom of the receiving screen to the waste sorting section. A chaf sheave consisting of a large number of horizontal bars that can be tilted back and forth is provided in front and behind a portion of the sorting body corresponding to the discharge port, and a stroke rack consisting of a large number of saw blade-shaped plates is provided between the chaff sheaves. A swing sorting device is already known in which the front and rear chap sheaves are interposed and connected by a telescoping rod provided below the stroke rack to adjust the relative inclination angle of both chap sheaves.

(c) Problems to be solved by the invention Because the stroke rack of the swing sorting device in the known threshing machine has poor sorting accuracy, a large amount of ear pieces and cut straw leaks out, which makes it difficult to remove grains. As the grain was shifted to the lower sorting net, the sorting performance of the most grains decreased.

In addition, when threshing wet grain culms, straw waste tends to get clogged at the connection between the chaff sheave and the straw rack, where the sorting mode changes. It had to be separated from the stroke rack and the restoration adjustment had to be made after removal, making the operation extremely troublesome.

Furthermore, the large number of horizontal bars that make up the chaff sheave are
Because it is thin, narrow, and long, it is extremely easy to twist, but since the front and rear chaff sheaves were connected only on one side, the mesh on the other side was irregular, making it impossible to achieve the desired sorting performance. I couldn't help it.

(d) Means for solving the problems The present invention provides a threshing machine in which a swinging sorting body is installed in the sorting air passage below the handling chamber to screen the threshed grains while sorting them through a sieve. A large number of horizontal bars are rotatably mounted on the swinging sorting body at intervals in the swinging direction, and the large number of horizontal bars are divided into front and rear groups, and both ends thereof are connected to separate connecting plates for each group. The front part of the rear connecting plate is brought into contact with the rear part of the front connecting plate via a space adjustment device that can be adjusted forward and backward, and the front and rear connecting plates are tensioned with springs. The above-mentioned problem has been solved by pressing the distance adjusting device against the ends of the opposing connecting plates and operatively connecting the connecting plate receiving the distance adjusting device to the operating section.

(E) Action The grains leaked from the receiving net in the handling room are transferred to the chaff sieve and subjected to rough sieving, and the leaked grains are transferred to the first leakage sorting section and sorted through the sieve, as in the conventional system. After wind sorting, those remaining at the top are transferred to the second sorting section where they are sorted.

In addition, depending on the variety of rice or wheat, the dryness and humidity of the grain culm to be threshed, etc., the spacing adjusters on both the left and right sides can be moved and adjusted to adjust the mesh size of the rear chaff sheave relative to the front one, thereby adjusting the crop or combine harvester. In response to changes in the amount of materials to be sorted due to slow running speed, etc., the mesh sizes of all chaff sheaves are adjusted simultaneously in the expanded/contracted state.

Then, during leakage screening using the chaff sieve,
The connecting parts of the front and rear chaff sheaves are regulated by spacing adjusters on both the left and right sides, so there is no difference in the spacing between the left and right sides, and when removing straw debris stuck between the front and rear chaff sheaves, It can be easily removed by resisting and separating both chaff sheaves.

(F) Embodiment To explain an embodiment of the present invention, a threshing machine for a combine harvester is shown in the drawings. Reference numeral 1 refers to a handling barrel mounted on a shaft in a handling chamber 2, and a dust-feeding machine installed on one side at the rear of the handling chamber. A processing cylinder 5 is mounted on a shaft in a processing chamber 4 provided from the side to the rear of the opening 3, and a swinging sorting body 8 is installed from below the receiving screen 6 of the processing chamber 2 to the dust sorting chamber 7. It is installed so that it can swing back and forth, and the swinging sorting body 8 is connected to the transfer plate 1.
0, the front chaff sheave 11, and the rear chaf sheave 12. The air blower 18 provided below the supply port blows through the front chaff sheave 11 and the net 20 stretched over the starting ends of the transfer plates 10 and 13. A sorting air passage, a sorting air passage that blows through the sorting net 15 and rear chaff sheave 12 from below the transfer plate 13, and the first receiving gutter 14.
A suction wind turbine 2 installed on one side of the rear part constitutes a sorting air passage that blows through the stroke rack 17 through the lower part of the
1 sucks the exhaust port and the dust sorting chamber 7 provided on one side of the rear part of the processing chamber 4.

A feed chain 22 and a pinching rail 23 are installed opposite to each other on the outside of the handling port, and the exhaust dust sorting chamber 7 is connected to the rear end of these rails.
A straw removal conveying device 25 is provided above.

The frame bodies of the front chaff sheave 11 and the rear chaff sheave 12 are connected to the horizontal frame plate 27 and the bolts 28 in front and rear of the left and right retaining plates 26, 26, which form an inverted L shape.
The retaining plate 26,
26 has a large number of round holes 3 at desired intervals in the upper part.
0..., and arc-shaped elongated holes 31a..., 31b... centered on the round hole 30 are provided at the bottom.

The horizontal bar 32 has protrusions 33 at the upper and lower parts of both ends.
The bushing 35 has an arm portion 34 whose outer surface is flat and whose inner side is arcuate, and a long arm portion 34 which projects inside the upper and lower parts and has a circular cross section and a gently tapered top and bottom. The protrusions 37, 37 having the holes 36, 36 are molded of nylon, which easily conforms to the shape of the inserted object, and has high abrasion resistance, or other synthetic resin with the same effect, and the long holes 31a in the front...
... has a steeper slope than the rear long hole 31b.

The front horizontal beams 32... are divided into the front chaff sheave 11 and the rear chaff sheave 12, and the lower convex portions 37 of the bushes 35... attached to these are separate connecting plates 39a, 39b
The distance adjusting device A of the front and rear connecting plates 39a and 39b is connected to each other by fitting into the round holes 38 of the
9a' and the long hole 39b' of the rear connecting plate 39b.
0a, which is screwed so that it can be moved back and forth, and whose front end abuts the bent portion 39a', and which is made of a wear-resistant synthetic resin such as nylon 6. A is provided on both left and right sides, and a spring 41 stretched between the front and rear connecting plates 39a and 39b moves the interval adjuster 40 to the bent portion 39.
The screw 40a, which is in pressure contact with the spacer 40 and adjusts the movement of the distance adjuster 40, is operated by inserting a spanner through a window bored in the machine wall.

In addition, the horizontal bar 32 at the front end of the front chaff sheave 11
An L-shaped arm 42 is fixed to the frame plate 26a, and the lower rear end of the arm 42 is connected to a slide plate 45 by a bolt 43 loosely fitted into a long hole 44 of the frame plate 26a.
A screw rod 46 protruding from the slide plate 45 is connected to a sensing arm 49 provided at the grain culm supply section via a turnbuckle 47 and an operating wire 48, and the sensing arm 49 is connected to the guide rail 5 as shown in FIG.
Since it is pivotally supported by a support shaft 50 protruding from 0a and faces the pincer rail 23, when there is a large amount of grain culms, it is pushed down and pulls the operating wire 48, and when there is little, it tilts upward and relaxes the operating wire 48. let

Next, to explain the sorting of grain threshing, handling room 2
The grains and small straw waste generated inside the net leak into the transfer plate 10 from the receiving net 6, and are screened by the front chaff sheave 11, where the horizontal bars 32... have a gentle slope and the mesh size is small. Then, it is air sorted and sieved by the rear chaff sieve 12 whose horizontal bars 32 are steeply sloped and have a larger mesh size.

In addition, the leakage material from the front and rear chaff sieves 11 and 12 is sieved and screened by a sorting net 15 and falls into the first receiving gutter 14, and the straw waste including the second one remains on the sorting net 15. The waste is transferred to the stroke rack 17 and subjected to sieving and winnowing, and the second waste that leaks and falls into the second receiving gutter 16 is returned to the handling chamber 2 or the transfer plate 10 by the second thrower.

Furthermore, the dust discharged from the dust inlet 3 is transferred to the processing chamber 4.
The straw waste that leaks from the processing cylinder receiving net 50b joins the swinging sorter 8 and is sorted, and the straw waste that has moved to the end of the processing chamber 4 is discharged from the discharge port. The straw debris floating in the dust sorting chamber 7 is suctioned out of the machine by the suction windmill 21, and the large straw debris is discharged out of the machine from the dust exhaust port 52.

When performing such threshing and sorting processing, if the grain culm to be harvested and threshed is well dry, or if the amount of grain to be threshed is large and the amount of cut straw is small compared to that, the turnbuckle 47 is used to connect When the plates 39a and 39b are moved rearward and adjusted, the mesh size of the front and rear chaff sheaves 11 and 12 is enlarged, so that the grains that have become the lower layer can be well leaked by rocking, and the amount of culm is reduced. When you get used to it, you can move the connecting plate forward to make the mesh smaller.

Further, when a large amount of cut straw etc. is generated, or when the amount of material to be sorted is small, moving the spacer 40 of the spacer A rearwardly adjusts the space between the horizontal bars 32 of the rear chaff sheave 12. It is possible to suppress the cut straw from leaking onto the lower sorting net 15 and prevent the cut straw from getting mixed in with the first grain, and in this state, the adjustment by the turnbuckle 47 You can also apply

Furthermore, as mentioned above, the front and rear chaff sheaves 1
With the meshes 1 and 12 adjusted to the optimum condition, stop cutting when the machine is turning, etc., and change the feed change 2.
The sensing arm 49 is appropriately biased upward when the grain culm supplied to the grain culm 2 becomes low or disappears.
As the is tilted upward, the connecting plate 39a is pulled forward, and the rear connecting plate follows it and moves forward, and the mesh of the front and rear chaff sheaves 11 and 12 is all reduced, and the amount of material to be sorted becomes extremely large. Even if the amount is low, it is possible to prevent cut straw etc. from leaking.

During such sorting process, the front and rear chaff sieves 1
1 and 12 are regulated by spacing adjusters 40 and 40 on both sides, so there is no difference in the spacing between the left and right chaff sheaves.In addition, if straw debris becomes clogged between the front and rear chaff sheaves 11 and 12, they can be removed by the spring. It can be easily removed by spreading it out against 41.

Reference numeral 53 denotes a maltplane that comes into contact with the lower surface of the upper horizontal portion of the frame plate 26a, and expands and contracts to prevent a gap from forming on the lower surface of the horizontal portion.

(g) Effects of the invention The present invention is a threshing machine in which a swinging sorter 8 is installed in the sorting air passage below the handling chamber 2 to screen the threshed grains through a sieve. A large number of horizontal bars 32... are rotatably mounted on the body 8 at intervals in the swinging direction, and the front large number of horizontal bars 32... are divided into front and rear groups, and both ends thereof are separated into groups. It is tiltably attached to separate connecting plates 39a, 39b, and the front portions of rear connecting plates 39b, 39b are brought into contact with the rear portions of front connecting plates 39a, 39a, respectively, via interval adjusters 40 that can be adjusted forward and backward. , a spring 41 is tensioned between the front and rear connecting plates 39a, 39b, the front spacing adjuster 40 is pressed against the ends of the opposing connecting plates, and the connecting plate receiving the spacing adjuster 40 is connected to the operating section. Since they are connected in an interlocking manner, it is possible to simultaneously adjust the tilting of the horizontal bars 32 at the front and the horizontal bars 32 at the rear of the oscillating sorting body 8 to suit the properties or quantity of the objects to be sorted. At the same time, by adjusting the relative angle of the horizontal bars 32... forming a pair at the front and the horizontal bars 32... forming a pair at the rear using the spacing adjuster 40, it is possible to perform sorting that matches the properties of the grains. It is possible to prevent cut straw from being mixed into the grains and to prevent the second grain from increasing abnormally.

When the relative angles of the front and rear horizontal bars 32 are adjusted, the adjusted state is maintained by the interval adjusters 40, 40 on both the left and right sides, so that each of the horizontal bars 3
2... are all thin, narrow, and long, but do not twist, and can perform sieve sorting with high sorting accuracy.

Furthermore, when straw or awns get stuck between the front and rear chaff sheaves 11, 12, they can be removed very easily and quickly by separating the chaff sheaves 11, 12 against the spring 41. can.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention,
Fig. 1 is a side view of the chaf sheave, Fig. 2 a is a cross-sectional view of the chap sheave, b is a plan view of the spacing adjustment device, Fig. 3 is an enlarged side view of the front part of the chap sheave,
Fig. 4 is a sectional view of the adjustment section, Fig. 5 is a plan sectional view of the same, Fig. 6 is a perspective view of the chaff sheave, Fig. 7 is a longitudinal sectional view of the threshing machine, Fig. 8 is a transverse sectional view of the above, 9
The figure is a side view of the detection section. 8... Oscillating sorting body, 26... Holding plate, 32...
Horizontal beam, 35...button, 39a, 39b...connecting plate, 39a'...bending portion, 40...interval adjuster,
41...Spring.

Claims (1)

[Scope of utility model registration request] In a threshing machine in which an oscillating sorting body 8 is installed in the sorting air passage below the handling chamber 2 to screen the threshed grains through a sieve, the oscillating sorting body 8 has a large number of horizontal bars 32... are rotatably mounted at intervals in the swinging direction, and the large number of horizontal bars 32 are divided into front and rear groups, and both ends thereof can be tilted to separate connecting plates 39a and 39b for each group. The rear connecting plate 39 is attached to the rear of the front connecting plates 39a, 39a.
b, 39b are brought into contact with each other via an interval adjuster 40 that can be adjusted forward and backward, and a spring 41 is tensioned between the front and rear connecting plates 39a and 39b, so that the interval adjuster 40 is opposed to the connecting plate. A rocking sorting device for a threshing machine, characterized in that a connecting plate which is pressed against an end of the holder and receives the interval adjuster 40 is operatively connected to an operating section.