JPH0131005Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an upper projecting structure in a grain lifting device of a combine harvester.

That is, in a grain lifting device for a combine that is constructed by coaxially installing a jump blade for jumping paddy into the upper part of a paddy tank on the upper end side of a spiral built into a grain lifting cylinder, the lower part of the jump blade is similar to the conventional one. It has a structure that does not wear out easily, and the paddy lifted up by the spiraler can be smoothly transferred to the far side of the paddy tank, and the paddy can be reliably ejected to a far distance within the paddy tank. The idea is to provide a device with a simple structure that can perform this effectively.

The following will explain the embodiments shown in the drawings.
Fig. 1 shows a side view of a paddy receiving part in a combine harvester. A shutter 10 is interposed in the lower part of the paddy tank 3, and a paddy outlet shutter 11 is installed vertically therein. A discharge port 14 is provided in a part of the periphery of the jump-out chamber 13, which is connected to the upper end of the inner grain lifting cylinder 1 and has a diameter larger than that of the grain lifting cylinder 1.
The discharge port 14 is connected to the upper part of the rear part of the paddy tank 3 so as to communicate with the upper part of the rear part of the paddy tank 3, so that the structure is similar to the conventional structure.

The shaft 5 of the spiraler 2 extends into the ejection chamber 13, and the upper end of the shaft 5 is mounted on a bearing 15 installed in the upper part of the ejection chamber 13, and the shaft 5 is driven from below. It is equipped as follows.

A boss 16 is fitted into the upper part of the shaft 5 inside the ejecting chamber 13 and fixed with a set bolt 17, and the upper part of the boss 16 faces the upper surface side of the ejecting chamber 13 and has a bearing part 15. The center part of the disk 18 facing downward is integrally formed, and both spring blades 4, 4', which are square plate-shaped and formed large according to the diameter of the spring chamber 13, are spaced 180 degrees apart. They are integrally formed so as to be connected to the lower surface side of the disk 18 and the periphery of the boss 16, and are installed parallel to the shaft 5 at a slight interval from each other, so that the upper end side of the spiral 2 This spiral 2 is made with the terminal end A and the lower part of the protruding surface of one of the protruding blades 4 in the extension direction of the terminal end of the spiral 2.
The rake blade 6 is a flat plate that is inclined at an angle β with a line a perpendicular to the axis 5 of the blade, and has a rake angle α with the side that rotates in advance in the direction of rotation B lower than the side that follows. It is connected by two adjacent sides. The width of one side C of the rake blade 6 on the shaft 5 is wider than the width of the outer end portion D on the eccentric side.

Further, the terminal end (A) on the upper end side of the spiral 2 is configured to be bonded to the outer end surface of the inner end (C) of the rake blade 6 of the spring blade 4.

Therefore, when the spiral 2 and both spring blades 4, 4' rotate in the direction of rotation shown by the arrow B due to the rotation of the shaft 5, the spiral 2 also lifts the paddy inside the hoisting tube 1. The paddy being picked up is swept from the surface of the spiraler 2 onto the surface of the scooping blade 6, the scooping blade 6 scoops it up, and the jumping blade 4 releases it forcefully from the discharge port 14 upward into the paddy tank 3. become.

In other words, the flat rake blade 6 is the spiral 2
The axis 5 of this spiral 2 in the direction of extension on the terminal side
It is tilted at an angle β with the orthogonal line α to The paddy to be lifted is shifted from the terminal end A to the lower surface of the leading side of the scooping blade 6, and the jumping surface on the outer periphery of the jumping blade 4 has a large jumping action. The guided paddy is smoothly guided toward the paddy tank 3, and the guided paddy is pushed out in a certain upward direction with force by the jumping-off surface of the large-formed jumping-off blades 4 that come into contact with the jumping-off surface. It begins to be emitted laterally.

As described above, the present invention provides a grain lifting device for a combine in which a grain lifting cylinder is coaxially equipped with an ejecting blade for ejecting paddy to the upper part of a paddy tank on the upper end side of an internal spiral. The jump-out blade, which is connected to a jump-out chamber formed at the upper end and has a diameter larger than that of the grain-lifting cylinder, and is built in the jump-out chamber, is formed to have a large diameter according to the diameter of the jump-out chamber. The terminal end of the spiral and the lower part of the projecting surface of the projecting blade are inclined at an angle with a line orthogonal to the axis of the spiral in the direction of extension of the terminal end of the spiral, and in advance in the direction of rotation. The rotating gauntlet was made lower than the trailing girder, and the two adjacent sides of the flat plate rake blades with a rake angle were connected to each other. The blades act as if scooping up and guide the paddy to the jumping surface of the jumping blade, and the guided paddy is caught in contact with the jumping surface and sent upward by the rotating jumping blade. is launched in a certain direction, and the scooping blade of the flat plate is tilted in the direction of extension of the end of the spiral at an angle with a line perpendicular to the axis of the spiral,
In addition, the rake angle is set so that the side that rotates in advance in the rotation direction is lower than the side that follows, so that the paddy lifted by the spiraler is transported from its end to the side that is ahead of the rake blade. The transition is biased toward the lower surface, and the jump is smoothly guided toward the outer periphery of the jump blade where the jump action is large, and even on that jump surface, the jump is moved in a constant upward direction. It is possible to reliably release the rice so that it can be jumped out and spread widely to the far side of the paddy tank.
Moreover, since the jumping blades are formed to be large in accordance with the jumping chamber which is formed to have a large diameter, the paddy lifted by the spiraler can be kicked out with sufficient force and with sufficient force.

As a result, the lower part of the spring blade no longer suffers from severe impact and wear and tear as in the past, and we have now been able to provide a simple structure that allows paddy to be put into the paddy tank well. It is.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the paddy receiving part of the combine, Fig. 2 is an enlarged sectional view of a part thereof, and Fig. 3 is a part of Fig. 2. , FIG. 4 is a sectional view taken along the - line in FIG. 3, FIG. 5 is a part of FIG. 3, and FIG.
7 is a - line view of FIG. 6; FIG. 7 is a - line view of FIG. 1... Grain barrel, 2... Spiler, 3... Paddy tank, 4, 4'... Jumping blade, 13... Jumping chamber,
A... End part, 5... Axis, a... Orthogonal line, β...
Angle, b...Rotation direction, α...rake angle, 6...
rake blade.

Claims (1)

[Scope of utility model registration request] In a grain lifting device for a combine, in which a springing blade 4 for ejecting paddy from the upper part of a paddy tank 3 is coaxially installed on the upper end side of a spiral 2 inside a grain lifting cylinder 1, the upper end of the grain lifting cylinder 1 is provided. The spring blade 4, which is built in the spring chamber 13 and communicates with the spring chamber 13, which is formed to have a larger diameter than the grain lifting cylinder 1, is adapted to the larger diameter of the spring chamber 13. The terminal end part A of the spiral 2 and the lower part of the projecting surface of the projecting blade 4 are set in the extension direction of the terminal end side of the spiral 2, and an angle β is formed between the perpendicular line a and the axis 5 of the spiral 2.
It is constructed by connecting two adjacent sides of flat plate rake blades 6 having a rake angle α, with the girth that rotates in advance in the rotation direction B lower than the girder that follows. The upper part of the grain lifting device of a combine harvester is characterized by: