JPH03103122A - Grain tank in combine - Google Patents

Abstract

PURPOSE:To provide the title tank intended to make grain discharge smooth, so designed that through the actuation of a grain falling plate, capacity of the tank is enlarged when grains are to be stored, according to the volume to be stored, and its capacity is made small when the grains are to be discharged, and the tilt of the plate is also made steep. CONSTITUTION:Through the actuation of a grain falling plate 7 in a grain tank 1, capacity of the tank is enlarged when grains are to be stored, according to the volume to be stored, and its capacity is made small when the grains are to be discharged. Furthermore, in their discharge, the tilt of the plate 7 is allowed to get steep, resulting in their smooth discharge to a discharge gutter 4. Also, for said plate 7, a sliding part 19 between the lateral end and the wall of the tank is covered with a flexible cover to decrease the amounts of grains and/or waste straw put into said sliding part and to keep the rotation of the plate smooth, thereby accomplishing the smooth falling discharge of grains through the upper surface of the cover.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a grain tank for a combine harvester or the like, and can be used for a combine harvester, a grain dryer, a grain transportation tank, etc.

(Prior art and problems to be solved by the invention) Combine harvester collection! ! In a grain tank that stores grain,
Because the tank capacity is limited, the structure is designed so that it can be partially expanded or contracted, and a portion of the structure can be folded when not in use with the combine harvester.

However, simply expanding or contracting the capacity of the grain tank is not enough.
It may be difficult for the grains to drain smoothly.

In other words, when grains are discharged downward in a grain tank, there is an angle of repose for the grain flow, and in order to completely discharge the grains in the tank, it is necessary to eliminate the flat surface on the bottom of the tank. There is.

Therefore, in this invention, when storing grains, the bottom surface of the tank is made flat to increase the grain capacity of the tank, and the grains in the tank are discharged to reduce the amount of grains, thereby making the bottom surface of the tank slope. This is to ensure smooth downstream discharge.

(Means for Solving the Problems) The present invention provides a method for controlling a grain flow plate that receives grains stored in a grain tank and guides them down to a discharge gutter at the bottom according to the weight of the stored grains. A flexible plate such as a rubber plate is provided so as to be able to freely move downward eight times to increase This is a structure of a grain tank such as a combine harvester, which is equipped with a sliding part cover.

(Function) When the grain tank is empty, the grain flow plate is in a position where it has rotated inward to the tank and is tilted toward the discharge gutter. By feeding into the grain tank, the weight of the fed grain causes the grain flow plate to pivot outwardly, increasing the capacity within the tank. At this time, since there is a flexible sliding part cover over the sliding part between the lateral end of the grain flow down plate and the approaching tank wall surface, the grains are not allowed to flow into the tank wall surface. This prevents grains from being caught between the grains and the grain flow plate. Therefore, in a state where grains are stored, the grain flow plate rotates downward and outward to expand the tank, thereby increasing the storage capacity.

When discharging grains, when the number of grains in the tank decreases due to the grains being discharged from the discharge gutter, the grain flow down plate rotates inward to make the upper surface an inclined surface. The grains are allowed to flow down from the upper surface of this grain flow down plate into the discharge gutter.

The capacity inside the tank is expanded or contracted by such rotation of the grain flow plate, but the sliding part cover between the tank wall and the side edge of the grain flow plate is Because of this provision, grains, straw waste, etc. are less likely to intervene in the gap between the sliding parts, and the grain flow plate rotates smoothly as the grain capacity increases or decreases.

(Effect of the invention) In this way, the grain flow plate in the grain tank increases the tank capacity and discharges the grains when storing grains, depending on the grain storage capacity in the grain tank. At the same time, when discharging the grains, the angle of inclination of the grain flow down plate becomes steep, allowing the grains to flow smoothly into the discharge gutter. In addition, since the sliding part between the side edge and the tank wall of this grain flow down plate is covered with a flexible sliding part cover, grains and straw debris do not fall onto this sliding part. The flexibility of the sliding part cover reduces the amount of grain stagnation on the upper surface of the sliding part cover, allowing for smooth grain flow. It can be discharged and the amount of remaining grains can be reduced.

(Example) A grain tank 1 in a combine has a paddy lifting machine 2 of a threshing machine visible at the upper end, and a discharge gutter 4 having a horizontal conveying spiral 3 is provided at the bottom. On both left and right sides of the discharge gutter 4, a grain flow plate 7 is constructed from a lower flow plate 5 and an upper flow plate 6. An arm 9 protruding from the lower flow plate 5 is tensioned via a spring 10 so that the lower flow plate 5 is elastically rotated upward around the shaft 8 at all times. It is energized. Reference numeral 11 denotes a stopper that locks the lower limit rotational position of the lower flow plate 5 at a substantially horizontal position.

The upper flow plate 6 is provided with its upper edge at the left and right outer ends of the grain tank 1 so as to be movable up and down around a shaft 12 parallel to the discharge gutter 4 and the shaft 8, etc., and from the end of the shaft 12. Arm 13
A spring 14 is connected to the upper flow plate 6 so that the upper flow plate 6 is constantly biased to rotate toward the inside of the tank.

These lower flow plate 5 and upper flow flow i6 are elastically maintained by springs 10 and 14 in positions substantially along the plane connecting both shafts 8 and 12 when no grain is stored inside the tank 1. The free edge portions are in a vertically overlapping state.

When more grains are stored inside the tank, the weight of the grains causes the lower flow plates 5, 6 to rotate around the shafts 8, 12, and the lower flow plate 5 is received by the stopper 11. The upper flow plate 6 takes a vertical position along the side wall of the tank 1, and takes a form that expands the capacity of the bottom of the tank 1 from side to side. At this time, the locking piece 5 of the upper flow plate 6 engages with the locking piece 5 that stands up at the end of the lower flow plate 5, thereby locking the upper flow plate 6 from opening outward. .

The axial edges of these lower flow plates 5 and 6 are brought close to the inner wall surface on the grain tank, but at the upper limit rotation position, a vinyl plate, a rubber plate, etc. Fixing tool 8 such as screws is attached to the upper edge of the flexible sliding part cover 17.
The lower end edge of the sliding part force bar 7 is shaped to have a width that spans the rotation limit position of these lower flow plates 5 and upper flow plate 6, and the lower edge of the sliding part force bar 7 is shaped to have a width that spans the rotation limit position of these lower flow plates 5 and upper flow plate 6, and It is configured to constantly cover the sliding portion l9 between the edge portion and the inner wall surface of the tank 1.

Through the harvesting operation of the combine harvester, the paddy threshed by the threshing device is supplied and stored in the grain tank 1 by the paddy lifting machine 2. Spring 10.14 when the grain tank l is empty
The grain flow down plate 7 is rotated inward of the tank 1 by (
However, when the weight on these grain flow plates 7 increases due to the storage of paddy, the lower flow plate 5 is rotated around the axis 8, and the upper flow plate 6 is rotated around the axis 12. , The capacity of the bottom of the tank 1 is increased, and the rotation is expanded to a state like the (mouth).

When the grain tank 1 is filled with paddy in this way, the conveying spiral 3 is rotated to discharge the paddy out of the tank. From the conveyance spiral 3, the material is further conveyed by an auger.

When the amount of paddy decreases as the paddy is carried out, the springs 10 and 14 sequentially move the lower flow plate 5 and the upper flow plate 6 from the (opening) position to the (a) position. Accordingly, due to this rotation, the upper surface of the grain flow down plate 7 gradually becomes steeper, allowing the paddy to flow down into the discharge gutter 4 smoothly.

When the grain flow lower plate 7 moves up and down, the upper side of the sliding part 19 between the axial end edge of the grain flow lower plate 7 and the inner wall surface of the grain tank is covered with a sliding part cover 17. Therefore, it is difficult for rice grains, straw waste, etc. to get into the sliding part 19.

This sliding portion 19 forms a corner between the tank inner wall surface and the grain flow down plate 7, and the flexible sliding portion 7 made of a vinyl sheet, rubber plate, etc. cover the part,
This prevents the paddy from stagnation, and since the sliding part cover 17 is opened by the downward movement of the grain flow down plate 7, the paddy etc. can flow down smoothly.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a partially cutaway front view, and FIGS. 2 and 3 are plan sectional views showing the operation of a portion thereof. (Explanation of symbols) 1 Grain tank 4 Discharge gutter 7 Grain flow down plate 17 Sliding part cover 19 Sliding part

Claims (1)

[Claims] A grain flow plate that receives grains stored in the grain tank and guides them down to a discharge gutter at the bottom is provided so as to be rotatable downward so as to increase the content of the grain tank depending on the weight of the stored grains,
A combine harvester or the like is provided with a flexible sliding part cover such as a rubber plate that covers the sliding part between the lateral end of the grain flow plate and the tank wall surface on which this lateral end slides. grain tank.