JP4049724B2 - Combine harvester - Google Patents

Description

  The present invention relates to a grain recovery device equipped in a combine.

As a combine grain recovery device, the grain selected and recovered by the threshing device is pumped by a screw-type threshing device installed on the threshing device and put into a grain tank arranged on the side of the threshing device. At the same time, the grain stored in the grain tank is carried out by the bottom screw arranged at the bottom of the tank, and it is lifted and laterally transported by a screw type unloader linked to the bottom screw so as to be loaded on a transportation vehicle or the like. Various maintenance operations on the side of the threshing device, for example, the No. 2 reduction device, by configuring and turning the grain tank about the longitudinal axis of the vertical conveyance unit of the unloader to open the side part of the threshing device And cleaning of the cerealing device, etc., and an expansion case can be installed on the outside of the grain tank so that it can be swung out and moved to increase the tank capacity. There is (for example, see Patent Document 1).
JP 2001-178243 A

  In the conventional grain recovery device, the grain discharged from the top end of the cerealing device located outside the grain tank is widely diffused into the inside of the grain tank. A discharge case formed in a flared shape is attached, and a discharge blade larger in diameter than the screw diameter is detachably attached to the upper end of a screw built in the cerealing device, and a connection flange provided on the outer periphery of the discharge case is attached to the grain. It was made to apply to the outer surface of a grain tank, and the processing cost of the discharge part of a cerealing device was high.

  In addition, since it has a structure in which the connection flange of the discharge case attached to the upper end of the cerealing device is connected to the outer surface of the grain tank, it is connected to the grain tank, so that the discharge port of the discharge case has a limited height. Therefore, it has been difficult to put the grain into the upper space in the tank.

  In addition, the above-described structure for providing the expansion case in a retractable manner has a high function of increasing the tank capacity. However, the structure is complicated, the number of parts is increased, and the cost is unavoidable. .

  The present invention has been made paying attention to such a situation, and can be implemented with a simple structure and at a low cost without losing the function of opening the grain tank and easily performing maintenance on the side of the threshing apparatus. An object of the present invention is to provide a combine harvester that can increase the tank capacity.

The grain recovery device for a combine according to the first aspect of the invention is provided by feeding the grain selected and recovered by the threshing device with a screw-type cerealing device standing and fixed on the threshing device, and deploying it on the side of the threshing device. In the grain recovery device of the combine that is configured to be loaded into the grain tank and to carry out the grain stored in the grain tank by the bottom screw arranged at the bottom of the tank and the unloader linked to this,
A bulging portion that protrudes toward the threshing device is formed on the upper part of the grain tank, and the opening portions formed on the respective surfaces are continuous over the lower surface of the bulging portion and the lateral side surface facing the threshing device. open a notch formed in the,
A lid plate detachably attached to the outer surface of the grain tank, comprising a bottom plate portion that closes the opening portion of the lower surface of the bulging portion, and a side wall portion that closes the opening portion of the lateral side surface,
In the state where the upper part of the cerealing device is penetrated and fixed to the bottom plate part of the lid plate and the lid plate is connected to the grain tank, the upper end side protruding upward from the bottom plate part of the cerealing device is in the tank over the entire circumference. And a discharge port formed at the upper end of the cerealing device is directed to the inside of the tank.

  According to the above configuration, the tank capacity increases by the amount of the bulging portion formed in the upper part of the tank body. In addition, since the upper part of the cerealing device is in the tank, a large-diameter discharge blade is attached to the upper end of the screw built in the cerealing device, or a special discharge case is attached to the conveying cylinder of the cerealing device. Even if it is not installed, it can be diffused into the tank simply by attaching a discharge vane with the same diameter as the screw diameter to the upper end of the screw built in the transfer cylinder, and discharging and scattering from the discharge port provided on the upper end side of the transfer cylinder. become. In addition, since it is not necessary to provide a discharge case at the upper end of the conveying cylinder of the cerealing device, the outlet of the conveying cylinder can be brought closer to the tank top plate, and the cereal with less gap near the top plate. Grain input is possible.

  Moreover, when the connection between the cover plate and the grain tank is released, the grain tank can be moved laterally outward with respect to the cover plate and the cerealing device to which the cover plate is attached, and the side surface of the threshing device is opened. Maintenance work can be performed.

  Therefore, according to the first invention, the structure of the discharge unit of the cerealing device can be simplified and inexpensively without impairing the function of opening the grain tank and easily performing maintenance work on the side surface of the threshing device. While it can be implemented, the tank capacity can be increased.

The grain recovery device for a combine according to the second invention is the first invention,
The grain tank is configured to turn around a longitudinal axis of a vertical conveyance unit of the unloader and open outward from the machine body.

  According to the above configuration, when performing maintenance work on the side surface of the threshing device, the connection between the cover plate and the grain tank can be released, and then the grain tank can be swung to be largely opened outward from the machine body. .

  Therefore, according to 2nd invention, while providing the said effect of 1st invention, the conventional structure can be utilized for the turning support structure of a grain tank, and it becomes still more effective in cost reduction.

The grain recovery device for a combine according to the third invention is the first or second invention,
The lower surface of the bulging portion formed in the grain tank is configured as an inwardly inclined surface that is inclined downward toward the tank.

  According to the above configuration, the bottom plate portion of the cover plate facing the lower surface of the bulging portion is also inclined at the same angle as the lower surface of the bulging portion, and by bringing the grain tank closer to the cerealing device, The inner surface and the lower surface can be brought close to the side wall and bottom plate of the lid plate, respectively, and a seal sponge or the like is interposed between the bulge portion and the lid plate so that the bulge portion and the lid plate are pressed against each other. Thus, it is possible to reliably close the peripheral portion of the vertically long opening formed in the bulging portion.

  Therefore, according to the third invention, the above-described effects of the first or second invention are brought about, and there is no leakage of grains and dust from the periphery of the vertically long opening formed in the bulging portion. Input and recovery can be performed.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a side view of the self-detaching combine as seen from the right side, and FIG. 2 shows a plan view thereof. This combine is connected to a front part of a traveling machine body 2 traveling by a pair of left and right crawler traveling devices 1 so as to be able to move up and down, and a driving part 4 and a driving force are connected to the right front part of the traveling machine body 2. The threshing device 6 is mounted on the left side of the traveling machine body 2 and the grain tank 7 is mounted on the right side thereof, and the cereals harvested by the cutting unit 3 are threshed by the threshing device 6 and selected. The recovered grain is transported by a screw-type mashing device 8 and charged into a grain tank 7, and the stored grain is discharged by a bottom screw 9 and a screw-type unloader 10 provided at the bottom of the tank. The structure is adopted.

  The grain tank 7 is supported so as to be pivotable about the longitudinal axis p of the vertical conveyance unit 10A in the unloader 10, and is at a predetermined recovery work position (a) approaching the threshing device 6 and a virtual line in FIG. The maintenance work on the right side of the threshing device 6 can be performed in a wide space by swinging the grain tank 7 to the maintenance open position (b). It is configured to be able to do.

As shown in FIGS. 3 and 4, a bulging portion 11 that protrudes toward the threshing device 6 is formed on the upper portion of the grain tank 7, and a lower surface 11 a of the bulging portion 11 is formed inside the tank. It is an inclined surface that goes down. And the opening 12 long notch up and down is formed over the lower surface 11a of this bulging part 11 and the horizontal side surface 11b which faces the threshing apparatus 6.

The whipping device 8 is configured by incorporating a screw 8b for lifting into a cylindrical conveying cylinder 8a, and a cover plate 13 for closing the opening is fixed to the upper part of the conveying cylinder 8a. And when the grain tank 7 exists in the collection | recovery operation position (a) , the upper part of the cerealing apparatus 8 is inserted in the tank through the said opening 12, and the upper end part of the cover board 13 is made into a grain tank in this state. 7 can be connected to the upper portion of the bulging portion 11 by a knob bolt 14.

The lid plate 13 is provided with a bottom plate portion 13a for closing the opening portion 12a of the bulging portion lower surface 11a and a side wall portion 13b for closing the opening portion 12b of the bulging portion lateral side surface 11b , and the bottom plate portion 13a. The upper part of the conveyance cylinder 8a in the cerealing device 8 is fixed through. Further, an elastic sealing material 15 such as a sponge is attached to the surface of the cover plate 13 facing the tank side, and when the grain tank 7 is turned to the recovery work position (a) , the lower surface 11a of the bulging portion 11 is provided. The lateral side surface 11b is pressed against the cover plate 13 via the elastic sealing material 15, and the periphery of the opening 12 is closed to prevent leakage of grains and dust.

  In addition, a discharge port 16 extending in an appropriate circumferential direction is formed on the upper end side surface of the conveying cylinder 8a, and a discharge blade 17 having a vertical width facing the discharge port 16 is fixed to an upper end of the internally mounted screw 8b. ing. The discharge blade 17 is configured to have the same diameter as the screw 8b and is inclined with a twist angle that is upward with respect to the screw rotation direction, and a large release distance is obtained by scattering and releasing the grains upward. It is supposed to be. Here, the said discharge port 16 provided in the upper end of the conveyance cylinder 8a is located near the top plate of the grain tank 7, and it is possible to throw grain into the upper part of the space in the tank with little gap.

  [Other Examples]

  (1) In the above embodiment, the grain tank 7 is swiveled around the vertical axis p of the vertical conveyance unit of the unloader 10 so that the right side surface of the threshing device 6 is largely opened. It is also possible to configure the tank 7 so that the right side surface of the threshing device 6 is greatly opened by turning it sideways around the axis of the bottom screw.

Combine side view Overall plan view of combine Front view of grain tank The perspective view which separated the grain tank and the cerealing device

Explanation of symbols

6 Threshing device 7 Grain tank 8 Grain raising device 9 Bottom screw 10 Unloader 10A Vertical conveying portion 11 Swelling portion 11a Lower surface 11b Lateral side surface 12 Opening 12a Opening portion 12b Opening portion 13 Cover plate 13a Bottom plate portion 13b Side wall portion 16 Discharge port

Claims (3)

The grain selected and collected by the threshing device is pumped by a screw type cerealing device standing and fixed on the threshing device, put into the grain tank deployed on the side of the threshing device, and stored in the grain tank In the combine grain recovery device configured to carry out the grain by a bottom screw arranged at the bottom of the tank and an unloader linked to the bottom screw,
A bulging portion that protrudes toward the threshing device is formed on the upper part of the grain tank, and the opening portions formed on the respective surfaces are continuous over the lower surface of the bulging portion and the lateral side surface facing the threshing device. open a notch formed in the,
A lid plate detachably attached to the outer surface of the grain tank, comprising a bottom plate portion that closes the opening portion of the lower surface of the bulging portion, and a side wall portion that closes the opening portion of the lateral side surface,
In the state where the upper part of the cerealing device is penetrated and fixed to the bottom plate part of the lid plate and the lid plate is connected to the grain tank, the upper end side protruding upward from the bottom plate part of the cerealing device is in the tank over the entire circumference. A combine grain recovery device, characterized in that the exhaust port formed at the upper end of the cerealing device is located in the tank and directed into the tank.   The combine grain recovery device according to claim 1, wherein the grain tank is configured to turn around a longitudinal axis of a vertical conveyance unit of the unloader and to open outward from the machine body.   The combine grain recovery device according to claim 1 or 2, wherein a lower surface of the bulging portion formed in the grain tank is configured as an inwardly inclined surface that is inclined downward toward the inside of the tank.

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