JPH0445715A - Threshing drum structure of whole-culm throwing combine - Google Patents

Abstract

PURPOSE:To deliver a culm from a reaping part to a threshing chamber without delay relative to the reaping speed of the reaping part or a transfer speed of a threshing drum by designing a spiral outer diameter of a raking member attached to the front end part of a threshing drum to be larger than the spiral outer diameter of threshing tooth. CONSTITUTION:Reaped culms transferred from a reaping part is raked in a threshing drum 2 with a spiral raking member 14 attached to the front end of the drum. The outer diameter of the spiral raking member 14 is made to be larger than the outer diameter of the spiral threshing tooth 5 to improve the culm-raking capability of the threshing drum. The clogging of culm caused by the insufficient raking power at a starting side part of the threshing drum can be prevented by this structure.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a handling barrel structure for a full-culm input type combine harvester. The stem culm to be threshed is placed on a shaft, and a receiving net is stretched on the underside of the handling drum, and handling teeth are provided in a spiral around the outer circumference of the handling drum. This invention relates to a handling barrel structure of a full culm input type combine harvester that is adapted to transport the entire culm to the culm.

[Conventional technology]

As a handling barrel structure of this type of full-culm input type combine harvester, the one disclosed in Japanese Utility Model Application No. 61-74329 is known.

[Problem to be solved by the invention]

The whole culm loading type combine harvester is designed to perform highly efficient work, but in the conventional technology mentioned above, the culm holder from the reaping section to the handling chamber has a spiral for raking the culm at the tip of the handling barrel. Despite the fact that the pitch of the part is larger than the helical pitch of the handling teeth, the conveyance speed tends to be slower than other conveyance speeds, and there is room for improvement.

The present invention aims to improve the above-mentioned disadvantages.

[Means to solve the problem]

In the handling barrel structure of the full culm input type combine harvester described at the beginning, the present invention provides a spiral scraping member at the front end of the handling barrel for scraping the reaped stem culm sent from the reaping part, and also provides this scraping member. A characteristic configuration is that the helical outer diameter of the inserting member is configured to be larger than the helical outer diameter of the handling teeth.

Furthermore, it is advantageous if the front end of the handling cylinder is configured in a tapered shape, the diameter of which decreases toward the front.

[For production]

In other words, the helical outer diameter of the helical raking member for raking the stem culm at the front end of the handling barrel was conventionally the same diameter or slightly smaller than the helical diameter of the handling teeth. By increasing the diameter, it is possible to improve only the raking ability and to deliver the stem culm from the reaping section to the handling chamber without delaying the reaping speed of the reaping section or the conveyance speed of the handling cylinder. be.

As a result, the threshing action of the handling drum can be smoothly performed without problems such as clogging of the stem culm due to insufficient raking ability at the starting end side of the handling drum.

Furthermore, if the front end of the handling cylinder is tapered so that the diameter becomes smaller toward the front, it is possible to further enhance the action of raking the stem culm.

〔Effect of the invention〕

Therefore, with the handling cylinder structure of claim 1, the ability of the handling cylinder to rake in stem culms can be increased without interfering with other functions, and the threshing performance can be improved by a simple modification of increasing the diameter of the rake member. We were able to provide a handling barrel structure for a practically useful full-culm input type combine harvester.

With the handling cylinder structure of claim 20, the above effects can be further enhanced.

〔Example〕

FIG. 2 shows a full-culm input type combine harvester, and FIG. 1 shows its threshing device (A).

The threshing device (A) is provided following the feeder (1) of the reaping section, and has an axial flow type handling cylinder (2) that rotates around the axis in the front and back direction.
) is mounted on a shaft across the front and back of the handling chamber (3), and the handling cylinder (2)
A receiving net (4) is stretched on the lower side, and handling teeth (5) are provided in a spiral around the outer periphery of the handling barrel (2), so that the stem culm to be threshed can be moved backwards while being given a threshing action. configured to be transported.

An inlet frame (6) having a rear upward slope is disposed below the front end of the handling cylinder (2) and connects the rear end of the feeder (1) and the front end of the receiving net (4).

The handling cylinder (2) has a drum shape with a tapered frustoconical front end (7) whose diameter becomes smaller toward the front, and includes a rotating cylinder (11) having a drive shaft (9), and a rotating cylinder (11) with a drive shaft (9). Torso (11)
It has a single spiral body (12) each having a predetermined lead angle and having a large number of handling teeth (13), each of which is connected in series to the outer peripheral part of the handling body. (2) is housed in the handling room (3) where the wire rod (4
b) A cone cape (receiving net) (4) is arranged, and a sorting device (B) is provided below it.

As shown in Fig. 1, a reaping section (
A spiral raking member (14) is provided for raking the reaped stem culm sent from C), and this raking member (14
) is configured to have a larger spiral outer diameter than that of the handling tooth (5). The scraping members (14) have a helical pitch larger than the helical pitch of the handling teeth (5), and are provided in total at opposing positions shifted by 180' to form two strips. Scraping member (14).

One of (14) is connected to the starting end of the spiral body (12),
The other end is an open end, resulting in two scraping members (1
The pitches of 4) and (14) are smaller than the pitch of the handling teeth (5).

Further, the diameters of both the scraping members (14), (14) are tapered from the middle, and the terminal diameters are made to match the diameter of the spiral body (12).

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the handling barrel structure of a full-culm input type combine harvester according to the present invention, and FIG. 1 is a side view of a threshing device showing the structure, and FIG. 2 is an overall side view of the combine harvester. (2)... Handling cylinder, (3)... Handling room, (
4)・・・Reception net, (5)・・・Tooth extraction, (1
4)...Rake member, (C)...Reaping part.

Claims (1)

[Scope of Claims] 1. An axial flow type handling cylinder (2) that rotates around an axis in the longitudinal direction is axially mounted across the front and rear of the handling chamber (3), and the handling cylinder (2) is mounted on the underside of the handling cylinder (2). A receiving net (4) is stretched and handling teeth (5) are spirally provided on the outer periphery of the handling barrel (2) so that the stem culm to be threshed is transferred rearward while being given a threshing action. This is a handling barrel structure of a full culm input type combine harvester, in which a spiral scraping member (14) is provided at the front end of the handling barrel (2) to scrape the reaped stem culm sent from the reaping part (C). ), and the helical outer diameter of the scraping member (14) is configured to be larger than the helical outer diameter of the handling teeth (5). 2. The handling barrel structure for a full culm input type combine harvester according to claim 1, wherein the front end of the handling barrel (2) is constructed in a tapered shape whose diameter becomes smaller toward the front.