JP4530740B2 - Small grain prevention body in threshing equipment - Google Patents

Description

  The present invention relates to a small grain prevention body in a threshing apparatus.

Conventionally, a threshing apparatus mounted on a self-decomposing combiner or the like is configured to perform a threshing operation on a harvested cereal meal fed to a handling cylinder through an open handling opening. A plate-shaped grain prevention body that removes the grains that enter between the grains supplied to the handling cylinder corresponds to the grains supplied to the handling mouth between the upper and lower handling boards that form the handling mouth. A threshing device that is supported so as to be vertically movable and urged downward is known (see, for example, Patent Documents 1, 2 and 3).
Japanese Utility Model Publication No. 56-8132 Japanese Utility Model Publication No. 4-28038 JP 2001-8537 A

  However, the threshing device has a space between the grain prevention body and the lower mouth plate even at the lower limit position of the grain prevention body. For this reason, when there is no cereal to be supplied, that is, when the handling cylinder is idle, the grains remaining in the handling chamber are spattered, but in this case, the sprinkled grains are discharged out of the machine from the space, In some cases, the grains collected in the vicinity of the lower handling plate, and became small grains.

  Further, in recent years, there has been a tendency to increase the feed cylinder speed by increasing the handling cylinder by increasing the efficiency of threshing. In this case, it is desirable that the layer thickness of the cereal supplied to the handling mouth is as thin as possible. However, when the layer thickness of the cereal is made as thin as possible, the above-mentioned space causes the problem that the grain prevention body does not act on the cereal and cannot prevent the grain.

In the threshing apparatus of the present invention for solving the above-mentioned problem, the grain prevention body includes a handling cylinder 9 and an opening handling opening 18 for supplying cereals to the handling cylinder 9, and the outside of the handling cylinder 9. The upper and lower handling plates 19 and 21 forming the handling port 18 are supported between the handling plates 19 and 21 so as to be vertically movable corresponding to the cereal straw supplied to the handling port 18. In the threshing apparatus provided with the grain prevention body 27 that is biased downward and removes the grains that enter between the grains, the grains are fed while being fed to the handling cylinder 9. The feed chain 13 and the holding rail 14 above the feed chain 13 are provided, and the rail support frame 17 that supports the holding rail 14 is supported so that the small grain prevention body 27 can be slid up and down. Hole 28 and slide hole 8 is supported by the pin 29 inserted into the pin 8 so as to be slidable up and down. The pin 29 is independent of the pinch rail 14 as long as the pin 29 slides in the slide hole 28. A compression spring 26 that urges 27 downward is provided, and the trimmer prevention body 27 is provided so that the tip is in contact with or close to the position near the handling cylinder rotation locus of the lower handling plate 21 when it is lowered. It is characterized by that.

  According to the structure of the present invention configured as described above, the grain prevention body urges the cereals supplied to the handling mouth from the upper side, so that the grain prevention body guards and handles the grains. There is an effect of preventing the grains from being removed by rotating and scattering the interior of the room and dropping on the grains. In recent years, there has been a tendency to increase the feed cylinder speed by increasing the handling cylinder by increasing the efficiency of threshing. In this case, it is desirable that the layer thickness of the cereal supplied to the handling mouth is as thin as possible.

  In the threshing apparatus, the crushed grain prevention body has a tip that is in contact with or close to the position near the handle rotation path of the handle plate on the lower side when lowered, so that the layer thickness of the cereal is as thin as possible. Even if it is a case, a small grain prevention body urges | contacts a grain candy from the upper side, and can prevent a small grain reliably.

  When there is no cereal to be supplied, that is, when the handling cylinder is idle, the grains remaining in the handling chamber are scattered by rotation. In this case, the tip of the crushing grain prevention body is handled by the lower handling plate. Since it is in contact with or close to the position in the vicinity of the trunk rotation trajectory, the small grain prevention body functions like a shutter, and the grains scattered and rotated are prevented from accumulating in the vicinity of the lower handling plate. As a result, small grains caused by grains that accumulate in the vicinity of the lower handling plate are also prevented.

  FIG. 1 is a side view of a combine having a threshing device equipped with a coarse grain prevention body of the present invention. The body 1 is supported by the left and right crawler type traveling devices 2. A pre-processing unit 3 is provided in front of the machine body 1 so as to be movable up and down. A driver's seat cabin 4 is mounted on the fuselage 1 on the right rear side of the preprocessing unit 3.

  A threshing device 6 is mounted on the left rear body of the cabin 4. On the left side of the cabin 4, there is provided a transport mechanism 7 that relays and transports the harvested cereal straw transported from the preprocessing unit 3 to the threshing device 6. The threshing device 6 is provided with a feed chain unit 8 that inherits the cereals that have been transported from the transport mechanism 7 and transports them toward the downstream (rear).

  FIG. 2 is a side view of the main part of the threshing device 6. A handling cylinder 9 is pivotally supported in the handling chamber 5 inside the threshing device 6 so as to be rotatable in the front-rear direction. The handle 9 has a conventionally known structure in which a handle 11 protrudes from the outer periphery of a cylindrical drum. A receiving net 12 is provided so as to cover the lower outer periphery of the handling cylinder 9. The handling cylinder 9 is pivotally supported substantially horizontally.

  A feed chain unit 8 is provided on the outer side of the handling cylinder 9. The upper side of the feed chain unit 8 on the outer side of the handling cylinder 9 is covered with a cover. The feed chain unit 8 extends over the front and rear of the handling cylinder 9. As described above, the harvested cereal meal is inherited by the feed chain unit 8. The feed chain unit 8 conveys the culm to the rear of the threshing device 6 while supplying the tip of the culm to the handling cylinder 9.

  The cereal grains supplied to the handling cylinder 9 are threshed by the handling cylinder 9 (teeth 11), and the processed product containing the threshed grain is filtered and dropped through the receiving net 12, and below the receiving net 12 The sorting process is performed in the sorting room. However, the feed chain unit 8 is provided with an inclination so that the rear side rises. For this reason, the cereal grains move toward the rear (downstream) while gradually moving upward, and are threshed.

  The feed chain unit includes a rotationally driven chain (feed chain) 13, a clamping rail 14 located on the side of the handling cylinder 9 and above the feed chain 13, and a feed chain frame 16 that guides the feed chain 13. It is configured. As shown in FIG. 3, the holding rail 14 has a gate-like cross section when viewed from the front, and is supported by a rail support frame 17 on the side of the body frame.

  A rail spring 15 is provided between the holding rail 14 and the rail support frame 17, and the holding rail 14 is urged from above by the rail spring 15 with respect to the feed chain 13.

  Between the feed chain unit 8 and the handling cylinder 9, a continuously opened space (a handling opening 18) for supplying cereals to the handling cylinder 9 is formed. As shown in FIG. 3, the handle 18 is formed by upper and lower handle plates 19 and 21. The lower side handling plate 21 on the lower side is bent along the rotation trajectory S of the tooth handling 11, and the tip (upper end) side is bent outward (feed chain 13 side) in the vicinity of the feed chain 13. Thereby, the inclined surface 21a toward the treatment cylinder 9 side is formed.

  The upper side upper handle plate 19 is bent at the tip (lower end) side toward the inner side (the handle cylinder 9 side). Thereby, the inclined surface 19a which goes to the treatment cylinder 9 side is formed. An inclined surface 19a of the upper handle plate 19 is provided above the inclined surface 21a of the lower handle plate 21 with a predetermined distance, and a handle 18 is formed between the inclined surfaces 19a and 21a. Both the inclined surfaces 19a and 21a are substantially parallel, and the angle of both the inclined surfaces 19a and 21a is set to such an extent that the grains on the inclined surface 21a are slid down to the handling cylinder 9 side.

  Both inclined surfaces 19a and 21a are inclined so that the rear side rises substantially parallel to the feed chain 13. Thereby, the handling port 18 is formed so as to be inclined so that the rear side rises substantially parallel to the feed chain 13.

  The aforementioned rail support frame 17 is provided outside the upper handling plate 19. As shown in FIGS. 3, 4, and 5, a plate 22 protrudes from the rail support frame 17 toward the inside (upper handle plate 19 side). A vertical rod 23 is inserted into the plate 22 so as to be slidable up and down. On the lower end side of the rod 23, a support plate 24 having an inverted L shape in front view is provided. A compression spring 26 is provided between the support plate 24 and the lower surface of the plate 22 so as to be fitted on the rod 23.

  On the other hand, in the threshing device 6, when the cereal is transported by the feed chain 13 and threshing processed, the grains that rotate and scatter in the handling chamber 5 enter between the transported cereals and are taken out as extra grains. Some will be discharged.

  In order to prevent the small grains, a plate-shaped small grain prevention body 27 is fixed to the support plate 24 downward. The casual grain prevention body 27 is provided with a vertical slide hole 28 at a position facing the sandwiching rail. A pin 29 provided on the sandwiching rail 14 is inserted into the slide hole 28, and a small grain prevention body is supported on the sandwiching rail 14 so as to be vertically slidable.

  Due to the above structure, the anti-slip body 27 is biased downward by the compression spring 26 in a range in which the pin 29 slides through the slide hole 28 independently of the holding rail. The casual grain prevention body 27 is bent so that the front end side (lower end side) is substantially parallel to the inclined surface 19 a of the upper handle plate 19. Further, the tip of the coarse grain prevention body 27 is inclined so that the rear side rises. However, the inclination angle of the rearward raising is smaller than the inclination angle of the rearward raising of the inclined surface 21a (the handling opening 18) of the lower handling mouth plate 21.

  The tip of the coarse grain prevention body 27 is positioned so as to be close to or in contact with the inclined surface 21a of the lower handling plate 21 when the coarse grain prevention body 27 is located at the lowest end of the slide. The proximity or abutment position of the small grain prevention body 27 on the inclined surface 21a is a position in the vicinity of the rotation locus of the tooth handling 11 of the handling cylinder 9, and is a bent portion of the lower handling mouth plate 21 in this embodiment. ing.

  At this time, since the inclination angle of the rearward rise of the tip of the small grain prevention body 27 is smaller than the inclination angle of the rearward rise of the inclined surface 21a of the lower handle plate 21, as shown in FIGS. The distance between the inclined surface 21a of the lower handling plate 21 and the tip of the small grain prevention body 27 becomes smaller toward the rear, and abuts at the rear position.

  As shown in FIG. 8, the grain prevention body 27 rises in accordance with the amount of the cereal X supplied and is supplied to the handling mouth 18 as shown in FIG. 8. The cereal bowl X to be applied is urged from above. As a result, the grain prevention body 27 guards the cereal X and removes the grains that fall on the cereal X by rotating and scattering in the handling chamber 5 to prevent the cereal. At this time, since the tip of the grain prevention body 27 is close to or in contact with the inclined surface 21 a of the lower handling plate 21, the grain prevention body 27 is provided even when the layer thickness of the cereal supplied to the handling port 18 is thin. Is urged to contact the cereal from above, and the prevention of crust grains is ensured.

  As shown in FIGS. 3, 6, and 7, when there is no grain straw supplied to the handling mouth 18, that is, when the handling cylinder 9 is idle, the grains remaining in the handling chamber 5 are scattered in rotation. However, in this case, the grain prevention body 27 functions like a shutter, and the grains that are scattered by rotation are prevented from accumulating in the vicinity of the lower handling plate 21 and the grain prevention body 27 is inclined. Since the grain slides down from the front end side of the crust preventive body 27 to the barrel 9 side, the grain is prevented from collecting on the front end side of the crevice preventive body 27, so that the crust prevention work is performed smoothly. It is.

  As described above, since the inclination angle of the tip side of the grain prevention body 27 is substantially the same as that of the inclined surface 19a of the upper handling mouth plate 19, the upper handling mouth plate 19 is moved up and down when the sand grain prevention body 27 is moved up and down. It becomes the same state as the case where it goes up and down, and it can be said that it is the same state as the case where the vertical width of the handling mouth 18 expands or contracts according to the circulation amount of the cereal.

  For this reason, the present grain prevention body 27 corresponds to a thin layer thickness culm when the feed cylinder speed is increased by lengthening the barrel by increasing the efficiency of threshing, and is in contact with this thin layer thickness culm. It is possible to prevent small grains. That is, the efficiency of threshing can be improved by adopting the present grain prevention body 27.

  In addition, the grain thickness of the cereal supplied to the mouthpiece 18 becomes thinner as it goes downstream by threshing by the handling cylinder 9. However, the distance between the inclined surface 21a of the lower handle plate 21 and the tip of the small grain prevention body 27 becomes smaller (finally in contact) as it goes rearward. For this reason, even if the layer thickness of the cereal is reduced as it goes downstream, the small grain prevention body 27 contacts the cereal and prevents the above-mentioned minor grains.

  On the other hand, the small grain prevention body 27 is composed of a single plate. On the other hand, as shown in FIG. 9, it is possible to adopt a configuration in which the coarse grain prevention body 27 is divided by a plurality of plates 31. In this case, each plate 31 constituting the casual prevention body 27 is supported by the rod 23 in an urging manner, so that each plate 31 moves up and down independently.

  Thereby, with respect to the grain straw of each conveyance position, each plate 31 is moved up and down independently to come into contact with the grain straw, and the grain prevention body 27 against the change in the layer thickness of the grain straw supplied to the handling mouth 18 In order to respond sensitively, it is possible to further enhance the efficiency of threshing, which increases the effect of preventing grain loss and increases the speed of the feed chain by lengthening the barrel.

  Further, the small grain prevention body 27 can be configured to move up and down in conjunction with the raising and lowering of the sandwiching rail 14. Furthermore, the grain prevention body 27 may be formed of an elastic member. Thereby, when the flow rate of cereals becomes more than a specified value, the disadvantage that the small grain prevention body 27 is deformed or broken can be prevented, and damage to the cereals by the small grain prevention body 27 can be avoided.

  For each compression spring 26 that urges the casual grain prevention body 27, the urging force of the front-side compression spring 26 may be smaller than the urging force of the rear-side compression spring 26. In this case, the cereal is pressed with a relatively small biasing force by the front compression spring 26 on the entrance side to the handling cylinder 9, and a relatively large biasing force by the rear compression spring 26 on the exit side from the handling cylinder 9. Is pressed by.

  Thereby, at the entrance to the handling cylinder 9 having a relatively large layer thickness, the pressing force of the small grain prevention body 27 is small, and the cereals are pressed by the excessively strong pressing force to cause conveyance resistance, and the small grain prevention is performed. It is possible to prevent the body 27 from being deformed or broken, or the cereals from being damaged. Further, at the outlet from the handling cylinder 9 having a relatively small layer thickness, the pressing force of the grain prevention body 27 is increased, and the grains can be reliably pressed to prevent the grains from being dropped.

Combine side view Side view of main part of threshing device AA sectional view of FIG. 2 when there is no supply of cereals from the mouthpiece It is a side view of a clamping rail part. It is a perspective view at the time of seeing a clamping rail from the handling cylinder side. BB sectional view of FIG. 2 when there is no supply of cereals from the mouthpiece CC sectional view of FIG. 2 when there is no supply of cereals from the mouthpiece 2 is a cross-sectional view taken along the line AA in FIG. It is a perspective view at the time of seeing a pinching rail from the handling cylinder side, when a small grain prevention object is divided and constituted.

9 Handling cylinder
13 Feed Chain (Chen)
14 Clamping rail
17 Rail support frame 18 Handling port 19 Handling plate (lower handling plate)
21 Mouth plate (upper port plate)
26 Compression spring 27 Small grain prevention body
28 Slide hole
29 pins

Claims (1)

A handling cylinder (9) and an opening handling opening (18) for supplying cereals to the handling cylinder (9) are provided, and provided on the outside of the handling cylinder (9) to form a handling opening (18). The upper and lower handling plates (19) and (21) and the both handling plates (19) and (21) are supported so as to be movable up and down corresponding to the cereals supplied to the handling port (18). In a threshing device provided with a grain prevention body (27) that removes the grains that are energized downward and enter between the grains, the grains are fed to the handling cylinder (9). A feed chain (13) configured to convey the feed chain (13) and a holding rail (14) above the feed chain (13), and the rail support frame (17) supporting the holding rail (14) prevents the above-mentioned casual grains. The body (27) is supported so as to be vertically slidable, and the slide hole (28) in the vertical direction and the A pin (29) inserted into the ride hole (28) supports the small grain prevention body (27) on the holding rail (14) so as to be slidable up and down, and a range in which the pin (29) slides through the slide hole (28). And a compression spring (26) for urging the small grain prevention body (27) downward independently of the sandwiching rail (14) . A small grain prevention body in a threshing device provided so as to come into contact with or close to a position in the vicinity of a handling cylinder rotation trajectory of the handling plate (21).

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