JPS6314614Y2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, the feed chain of the threshing device was extended to the rear of the machine along the straw conveyance path, and the rear end of the pruning rail was kept slightly rearward from the part facing the culm discharge port. A combine harvester is already known in which a straw conveying belt is provided obliquely in a straw conveying path, the rear end of which is deviated toward the panicle side.

However, in the above-mentioned straw removal conveying device, when the straw to be removed is a short culm, as it is transported backwards, the plant head part comes off from the extension part of the feed chain, and only the ear side comes into contact with the top plate of the dust removal chamber and receives resistance. As a result, there was a delay in the transfer of the straw to the tip side, causing the straw to be slanted.On the other hand, if the culm was extremely long, there was a delay in transfer to the base of the plant, and as there was no means to control the top surface, the posture was disturbed, and in both cases, the straw was transferred at an angle. The waste straw is fed in an oblique position to the cutter or binding device installed at the end, and in the cutter, the waste straw wraps around the shaft of the cutting blade, resulting in an overload and cutting at an angle. , culm clogging and bundling errors occur, and bunch separation becomes worse.

The present invention is an attempt to improve the above-mentioned drawbacks, and involves installing a straw conveying belt obliquely at the rear of the culm discharge opening, the rear part of which is deviated toward the panicle side, and stretching it along the lower edge of the handling opening. In a combine harvester in which the installed feed chain is extended to the rear of the machine and the feed chain and the straw removal conveyor belt are formed in a figure eight shape, the lower surface of the straw being conveyed is placed between the extension of the feed chain and the straw removal belt. The present invention is characterized in that a supporting guide for guiding the straw and a presser guide made of an elastic material and guiding the straw by contacting with the upper surface thereof are arranged side by side.

The embodiment shown in the drawings will be described below. The threshing device shown in the drawings is mounted on the machine base of a combine harvester. Reference numeral 1 denotes a handling barrel mounted on a shaft in a handling chamber 2, and a feed chain 3 along a handling opening. The feed chain 3 is arranged in parallel with the lower part and the clamping rail 4 as the upper part, and the feed chain 3 extends to the part facing the rear end of the dust sorting chamber 2a, while the clamping rail 4 is located at the bottom of the culm opening. It only extends to the rear.

Reference numeral 5 denotes a straw removal conveyance chain which is suspended diagonally above the straw removal passage with its rear end deviated toward the panicle side, and a clamping rail 6 is provided oppositely to the conveyance surface below the chain. A support guide 7 is provided between the extending portion 3a of the feed chain 3 and the straw transporting chain 5 to guide the lower surface of the straw being transported, and its base extends forward to the handling chamber 2. is fixed to the outlet side plate 22b.

Further, on both sides of the support guide 7, presser guides 8 and 8' are arranged, which are made of elastic plates and slide into contact with the upper surface of the straw being conveyed. It is further bent toward the rear, and the upper part is fixed to a hanging rod 10 that projects laterally from the hanging frame 9 of the straw conveying chain 5.

Reference numeral 11 denotes a guide rod provided on the side of the ears of straw conveying chain 5, which supports and guides the ears of straw.

Reference numeral 12 denotes a desk-type cutter attached to the rear of the threshing device, and the rear of the straw conveying chain 5 faces above the inlet of the desk-type cutter.

Reference numeral 13 denotes a scraper screwed onto the front end of the stock side of the desk-type cutter 12, which faces close to the rear end of the extending portion 3a of the feed chain 3 and scrapes waste straw from the rear end of the feed chain 3. and drop it into the cutter casing.

In the above-mentioned apparatus, while the grain stem is conveyed by being held between the feed chain 3 and the clamping rail 4, the ears are threshed in the handling chamber 2 by the handling drum 1, and are discharged from the culm opening. The middle part of the waste straw is scooped up by the front part of the clamping rail 6 and the support guide 7, and it is held by the clamping rail 6 and the straw transporting chain 5, and is conveyed while being brought to the ear side.

At that time, the stock side is released from the clamping by the clamping rails 4 and is transported while being placed on the extension part 3a of the feed chain 3, and the straw removal chain 5 and the extension part 3a are separated from each other. As shown in Fig. 3, it is supported by the support guide 7 and guided in a pinched state pressed downward by the presser guides 8, 8', and at the same time, the presser guide 8 on the stock head side moves the stock base part to the extending part 3a. Since the culm is pressed onto the surface and conveyed in a pinched manner, there is no delay in conveying it to the plant base even if the culm is extremely long.The presser guide 8 is made of an elastic plate and has a weak pressing force, and furthermore, the culm is transferred from the extending portion 3a toward the culm. Since they are separated, the clamping force by the presser guide 8 and the extension part 3a is weak, so the straw removal chain 5 and the clamping rail 6, which strongly clamp and transport the straw, follow the conveyance, and the stock base part is placed on the extension part 3a. Move to the ear side.

In addition, when the waste straw is a short culm, as the straw is fed backward, the extension part 3a of the feed chain 3
Although it comes off, the support guide 7 and presser guides 8, 8'
The culms are clamped and guided by the culms, which provide appropriate resistance, so that there is no delay in transferring the culms, and both long and short culms are fed to the desk-type cutter 12 in an orderly horizontal position, and cut to a predetermined size. I was caught off guard.

As mentioned above, this invention has a straw conveying belt diagonally installed at the rear of the culm discharge port with the rear section deviated toward the panicle side, and a feed chain stretched along the lower edge of the handling port is extended to the rear of the machine. In a combine harvester in which a feed chain and a scavenging straw conveying belt are arranged in an eight-shape, a support guide for guiding the lower surface of the scavenged straw to be conveyed and an upper surface of the scavenging straw are provided between the extension part of the feed chain and the scavenging straw conveying zone. In addition, a presser guide made of an elastic material is installed in parallel with the feed chain, so when the waste straw is transferred to the waste straw conveyor belt, the stock base is lightly held between the feed chain extension and the presser guide, so that it is well-organized. It is possible to prevent inheritance, disorder of waste straw, and mistakes in inheritance by keeping the straw in a state of ivy.

In addition, if the waste straw is a short culm, even if the stock head part comes off the extension part of the feed chain while being brought to the panicle side by the waste straw conveying belt, the support guide and presser guide will hold and guide the stock part. Since the feed chain is properly braked, there is no delay in transfer to the tip side, and if the long culm is simply placed on the extension of the feed chain, there will be a delay in transfer to the tip and it will come apart. However, since the presser guide guides the stock head part by pressing it against the extension part and pinching it, it is possible to prevent delays in transferring the stock head part, and it is possible to transport the stock head part in a well-organized and orderly manner. It is possible to feed the waste straw in a well-aligned state in the lateral direction to the cutter or binding device installed at the rear of the straw conveying belt.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention,
FIG. 1 is a longitudinal cross-sectional view of the threshing device, FIG. 2 is a partially cutaway plan view of the same, and FIG. 3 is a cross-sectional view of the main part. 3...Feed chain, 3a...Extension part, 5...
...Straw removal chain, 7...Support guide, 8, 8'
...Presser foot guide.

Claims (1)

[Scope of utility model registration request] At the rear of the culm discharge port, a straw transport belt with the rear part deviated toward the ears is installed diagonally, and a feed chain stretched along the lower edge of the handling port is extended to the rear of the machine to create a feed chain and straw transport belt. In a combine harvester having an eight-shaped shape, a support guide for guiding the lower surface of the straw to be conveyed is provided between the extension part of the feed chain and the straw removal belt; A straw removal conveying device for a combine harvester, characterized in that a presser guide made of an elastic material is arranged in parallel with the straw removal guide.