JPH09187155A - Unloader of grain tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the unloader of a grain tank, capable of avoiding its contact with a screw to prevent the damage of a shutter, enabling to smoothly open or close the shutter, and improved in durability by disposing the highly rigid shutter, etc., capable of being press-opened by the discharge of grain straws. SOLUTION: An inner edge 10a on the upstream side of a grain-carrying direction in a communication port 10A between a horizontal screw cylinder 10 and an extrusion cylinder 11 is placed in the extrusion cylinder 11. A highly rigid shutter 13 energized into a closed posture contacting with the inner edge 10a of the communication port 10A, capable of being press-opened by the discharge of grains and capable of being swung is disposed in the extrusion cylinder 11. The swinging edge side of the shutter 13 is preferably bent on the extrusion port side of the extrusion cylinder 11, and a packing 16 is preferably disposed between the shutter 13 and the inner edge of the communication port 10A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain tank for combine harvesters, and more particularly, to grains that are stored in the grain tank, which are rotatable about a vertical screw conveyor and a vertical axis center and undulated around a horizontal axis axis. The present invention relates to an unloader for a Glen tank that discharges to the outside of the machine via a swingable horizontal screw conveyor.

[0002]

2. Description of the Related Art Conventionally, an unloader for a Glen tank is
As shown in FIG. 5, the slide shutter 1 is pushed to the end of the screw shaft of the horizontal screw conveyor 8 by the discharge of the grain and is biased to return by the spring S.
Structure with 3'provided, or actual exploitation Sho 63-169
As disclosed in Japanese Patent No. 845, there is a structure in which an elastic shutter made of an elastic body such as rubber that is flexibly deformed by the discharge of grains is provided at a connecting corner portion of the horizontal screw cylinder and the discharge cylinder.

[0003]

With the structure described above, the grain accumulated on the bottom of the horizontal screw cylinder in the attitude-retracted posture does not overflow from the clearance between the cylinder and the screw due to the vibration of the machine. In addition, when cleaning the discharge cylinder, a shutter is provided so that the hand inserted into the discharge cylinder does not come into contact with the screw and hurt, but at the end of the screw shaft, With the former structure that is provided with a slide shutter that is pushed open when the grain is discharged, there is the inconvenience that it is difficult for the shutter to slide smoothly due to the bran or dust that adheres to the shaft, and the screw cylinder and discharge cylinder In the latter structure in which an elastic shutter that bends and deforms due to the discharge of grains is provided at the connecting corner, in the case where the hand inserted into the discharge cylinder touches the elastic shutter when cleaning the discharge cylinder. Elastic shutter is bent to the screw side, elastic shutter elastic shutter in contact with the lateral screw is scratched fear.

It is an object of the present invention to smoothly open and close the shutter and prevent damage to the shutter when the shutter is pressed inward by the hand inserted into the discharge tube.

[0005]

According to the present invention as set forth in claim 1, the grain in the grain tank can be swung around a vertical screw conveyor and a vertical axis center and can be undulated and swung around a horizontal axis axis. An unloader for a grain tank that discharges grains to the outside of the machine through a discharge cylinder in a direction orthogonal to the screw cylinder of the horizontal screw conveyor while being conveyed through the horizontal screw cylinder. And the inner edge of the grain transfer direction at the communication port of the discharge tube and the inside edge into the discharge tube, in the discharge tube, while being urged in a closed position abutting the inner edge of the communication port,
There is provided a highly rigid shutter that can be swung open when the grains are discharged. [Operation] As shown in FIG. 2, the shutter 13 is pushed open as shown by an imaginary line against the biasing force of the return spring 15 by the pressing force of the grain conveyed by the screw 8, and the shutter 8 is pushed. As shown by the solid line when stopped, the return spring 15 causes the inner edge 1 of the communication port 10A to move.
It is closed by touching 0a. When the hand inserted into the discharge cylinder 11 touches the shutter 13 during cleaning of the discharge cylinder 11, the rigidity of the shutter 13 prevents the hand from entering the inside of the hand, and the inside of the shutter 13 itself is prevented. Prevents bending to one side. [Effect] As described above, since the shutter is of the swing opening / closing type, the opening / closing of the shutter can be smoothly performed, and the rigidity of the shutter can prevent intrusion of the inside of the hand and contact with the screw of the shutter. Therefore, damage to the shutter can be suppressed.

According to a second aspect of the present invention, the swing end side of the shutter is bent toward the discharge port side of the discharge cylinder. [Operation] By bending the swinging end side of the shutter toward the discharge port side, it is possible to largely prevent the hand from entering the screw inward at the bent portion. [Effect] In this way, by bending the swing end side of the shutter toward the discharge port side, it is possible to further prevent the hand from entering the screw inward side.

According to a third aspect of the present invention, a packing is provided between the shutter and the inner edge of the communication opening. [Operation] By providing the packing between the swing shutter and the inner edge of the communication port between the horizontal screw cylinder and the discharge cylinder on the upstream side in the grain transport direction, the impact when the shutter is closed can be mitigated. [Effect] As described above, by providing the packing between the swing shutter and the inner edge of the communication port of the horizontal screw cylinder and the discharge cylinder on the upstream side in the grain transport direction, the impact force when the shutter is closed is mitigated. Therefore, the shutter itself can be prevented from being damaged early.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to a normal combine. FIG. 1 shows the entire combine. This combine connects a front part of a traveling machine body 3 equipped with a crawler traveling device 1 and a boarding operation unit 2 with a mowing pretreatment unit 4 so as to be vertically swingable and swingable. The threshing device 5 and the Glen tank 6 are mounted on the machine body 3,
Through the unloader 9 composed of a vertical screw conveyor 7 and a horizontal screw conveyor 8 that can swing around a vertical axis Y and can swing up and down around a horizontal axis X. It is designed to be discharged outside the machine.

As shown in FIG. 2, the screw cylinder 10 is provided at the end of the screw cylinder 10 of the horizontal screw conveyor 8.
A discharge cylinder 11 forming a discharge port 11a in a direction orthogonal to is fixedly connected.

The length of the discharge cylinder 11 in the axial direction is slightly longer than the length of the communication port 10A formed in the screw cylinder 10 in the axial direction.
Inner edge 10a of the communication port 10A of 0 on the upper side in the grain conveying direction
Is configured to enter the discharge cylinder 11, and the swing shaft 14 of the shutter 13 is arranged and set in the dead space A formed in the connecting corner portion 12 between the screw cylinder 10 and the discharge cylinder 11. ing.

The shutter 13 is a shutter made of sheet metal and has a damming surface 13a for bypassing the inner edge 10a of the communication port 10A, which is perpendicular to the axis of the horizontal screw cylinder 10 for preventing grain leakage. The bent surface 13b facing the discharge port 11a is provided. On the swing shaft 14 of the shutter 13, springs 15 and 15 for returning the shutter having a weak urging force such that the shutter 13 is pushed open by discharging the grain.
Is installed.

Further, the communication port 10 of the screw cylinder 10
A soft packing 16 made of sponge or the like is fixed over the lower surface on the A side and the left and right side surfaces of the discharge cylinder 11 so as to reduce the impact force when the shutter is closed.

[Other Embodiments] As shown in FIG. 4, the communication port 10A formed in the screw cylinder 10 is obliquely cut off and abuttable to the inner edge of the oblique communication port 10A, which is swingable. The rigid shutter 13 may be provided.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

1] Overall side view of combine

FIG. 2 is a vertical sectional side view showing the tip of the unloader.

FIG. 3 is a longitudinal sectional front view of the same.

FIG. 4 is a vertical sectional side view showing another embodiment.

FIG. 5 is a vertical sectional side view showing a conventional embodiment.

[Explanation of symbols]

 6 Glen Tank 7 Vertical Screw Conveyor 8 Horizontal Screw Conveyor 10 Screw Cylinder 10A Communication Port 10a Communication Port Inner Edge 11 Discharge Cylinder 11a Discharge Port 13 Shutter 16 Packing

Claims (3)

[Claims] 1. A horizontal shaft in which a grain in a grain tank (6) can be swung around a vertical screw conveyor (7) and a vertical axis (Y), and can be undulated and swung around a horizontal axis (X). The grain tank which conveys via a screw conveyor (8) and discharges the grain out of the machine via a discharge cylinder (11) in a direction orthogonal to the screw cylinder (10) of the horizontal screw conveyor (8). Of the horizontal screw cylinder (10) and the discharge cylinder (11).
0A), the inner edge (10a) on the upstream side in the grain conveying direction is inserted into the discharge cylinder (11), and the discharge cylinder (1)
1) A shutter (1) which is biased to a closed position in which it contacts the inner edge (10a) of the communication port (10A) and which is pushed open by the discharge of grain and has a large rigidity.
3) The unloader of the Glen tank provided. 2. The unloader for a grain tank according to claim 1, wherein the swing end side of the shutter (13) is bent toward the discharge port (11a) side of the discharge cylinder (11). 3. The shutter (13) and the communication opening (1)
The Glen tank unloader according to claim 1 or 2, wherein a packing (16) is provided between the inner edge (10a) of (0A).