JPH0531887Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a waste straw conveying device for conveying waste straw after threshing.

[Conventional technology]

Generally, agricultural machines such as combine harvesters are equipped with a straw transporting device that transports waste straw after threshing to the rear of the machine. Conventionally, this type of straw transporting device has been equipped with a chain equipped with a raking protrusion. A conveying chain is formed by connecting a large number of plates facing each other, and a chain rail is arranged between the opposing chain plates, so that the straw stock part is held and conveyed between the conveying chain and the chain rail. something is known.

[Problems that this invention attempts to solve]

However, with conventional straw removal conveyors in which the stock side is simply held between a conveyor chain and a chain rail, the tip side of the waste straw, which is bent at the pinching position, is transported while hanging downward due to its own weight. During the conveyance process, they come into contact with the machine frame, etc., and cannot be conveyed smoothly, which causes a delay in conveyance on the tip side.

The present invention was devised to solve the above-mentioned problems, and even if the waste straw is transported by holding the stock part between the transport chain and the chain rail, the weight of the waste straw during the transport process is Therefore, the present invention aims to provide a straw removal conveying device that can prevent the drooping tip side from coming into contact with the machine frame, etc., reliably prevent conveyance delays, etc., from occurring on the tip side, and can smoothly pinch and convey the tip. It is something to do.

[Means for solving problems]

In order to solve the above problems, the technical means taken by the present invention is to arrange a chain rail between opposing chain plates equipped with scraping protrusions forming a conveying chain, and to move the straw stock base. In the scavenging straw conveying device configured to pinch and convey, a tip side rail is provided on the tip side of the conveying chain to support the tip of the scavenge straw, which is located below the chain rail, and is sandwiched between the two rails. It is characterized in that the raking protrusions on the tip-side chain plate are configured to protrude higher than the raking protrusions on the opposing stock-side chain plate.

[Effect of invention]

Therefore, according to the present invention, the waste straw whose stock part is held between the conveying chain and the chain rail is
Since it is supported by the tip side rail provided on the tip side of the conveyance chain, the tip side will not droop, and the tip side rail located below the chain rail will conversely push the tip section upward. Since the tip side is always supported in a horizontal position, there is no possibility that the tip portion will come into contact with a machine frame or the like and cause a delay in conveyance. Even if the amount of straw to be conveyed increases, the chain plate on the tip side, which is sandwiched between the chain rail and the rail on the tip side, can be removed with a scraping protrusion that protrudes higher than the scraping protrusion on the chain plate on the stock side. Since the straw is reliably conveyed, there is no delay in conveyance on the tip side, and the straw can be smoothly pinched and conveyed regardless of the amount of straw to be discharged.

〔Example〕

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Reference numeral 1 is a combine harvester, which is equipped with a pre-processing section 3 at the front of the machine body equipped with a running section 2, a threshing section 4 on one side behind the pre-processing section 3, and a driving operation section 5 and a paddy processing section on the other side. A processing section 6 is provided, and a straw removal cutter 7 and a binding device 8 are attached to the rear of the machine.

Reference numeral 9 denotes a rice culm supplying device disposed along the handling opening of the threshing section, and a straw removal conveying device 10 is installed from the conveying end of the grain culm feeding device 9 toward the straw removal cutter 7. Reference numeral 11 denotes a conveyance chain constituting the straw removal conveyance device 10, and the conveyance chain 11 has a plurality of chain plates 13 each having a scraping protrusion 12 connected in a facing manner via a connecting link 14 to form an endless strip. The drive sprocket 15 on the threshing section 4 side and the driven sprocket 1 on the straw removal cutter 7 side
It has been suspended for 6 years.

Reference numeral 17 denotes a chain rail disposed between the chain plates 13 facing each other, and the chain rail 1
7 is a conveyor rail 1 provided below the conveyor chain 11
8 is provided in a protruding manner toward the connecting link 14, and the base of the waste straw is held between the conveying chain 11 and the chain rail 17, and the conveying chain 11
The scraping protrusion 12 of the chain plate 13, which is moved by the rotation of the chain plate 13, conveys the waste straw.

Reference numeral 19 denotes a tip side rail provided on the tip side of the conveyance chain 11, and the tip side rail 19 is fixed to the conveyance rail 18 in parallel with the chain rail 17 and is located below the chain rail 17. As shown in FIG. 5, the upper surface thereof is located approximately midway between the peaks a and the valleys b of the scraping protrusion 12 formed on the chain plate 13 on the tip side. The scraping protrusion 12 of the chain plate 13 located on the tip side
It is formed to protrude higher than the scratching protrusion 12a of 3a. Furthermore, extendable slide rails 20 and 21 are provided at the end portions of the chain rail 17 and the tip side rail 19, respectively.
22 is its operating mechanism.

Reference numeral 23 denotes a switching plate provided on the upper surface of the straw removal cutter 7, and when the switching plate 23 swings upward, the transferred straw falls onto the straw removal cutter 7 below and is swung downward. When it moves, it is guided to the binding device 8 along the upper surface of the switching plate 23. At this time, the slide rails 20 and 21 extend to convey the waste straw to the rear.

The straw removal cutter 7 of the present invention uses a plurality of wire blades that rotate at high speed to cut the waste straw. That is, as shown in FIG.
A plurality of wire blades 27 are attached to cutter shafts 25 and 26 provided in the cutter shaft 4, and when a switching lever 28 is operated, power from an input shaft 29 is transferred to gears 30, 31, 3.
2 and 33, the cutter shafts 25 and 26 rotate at a high speed of 4,000 to 6,000 revolutions per minute, and the cutting energy generated at the tip of the wire blade 27 shreds the waste straw. On the other hand, during dropper work in which waste straw is discharged as is, the power of the input shaft 29 is transferred from the sliding gear 34 to the gears 35, 32, 3 by switching the switching lever 28.
3, the cutter shafts 25 and 26 rotate at a low speed, and the wire blade 27 does not shred the waste straw.
The waste straw is conveyed downward and collected on the dropper 36, and the collected straw in a predetermined amount is discharged downward as the dropper 36 rotates downward. 37 is a restoring spring for the dropper 36. Also the first
As shown in Figure 0, a plurality of wire rod blades 27 are provided on a single cutter shaft 38, and a fixed blade 39 is provided opposite to the wire rod blades 27.
It may also be possible to rotate it downward.

In the configuration as described above, if the machine enters the upright shell culm, the shell culm harvested in the pre-processing section 3 will be threshed in the threshing section 4, and the waste straw after threshing will be removed from the shell culm. The straw removal conveyor 10 takes over from the conveyance end of the supply device 9, and is conveyed toward the straw removal cutter 7 while being held between a conveyance chain 11 and a chain rail 17.

At this time, the conveyance chain 11 and the chain rail 17
The straw A whose stock end side is held between
9, the tip side does not droop as shown in Figure 7B, and the tip side rail 1
9 is located below the chain rail 17, and its upper surface is located approximately midway between the ridges a and troughs b of the scraping protrusion 12, so that the straw is removed from the chain rail 17 as shown in FIG. There is no possibility that the tip side will be bent downward by the valley part b of the scraping protrusion 12 and protrude upward between the tip side rail 19 and the tip side rail 19. Therefore, the tip side of the waste straw A can always be kept in a horizontal position as shown in FIG. 6, and can be smoothly transported without contacting the machine frame or the like and causing transport delays.
Even if the amount of waste straw to be conveyed increases, the chain plate 13 sandwiched between the chain rail 17 and the tip side rail 18 has a highly protruding raking protrusion 12, so that the waste straw can be transported reliably. This prevents transport delays.

In addition, since the straw cutter 7 shreds the straw with the wire blade 27, it is lighter in weight compared to conventional disc-shaped cutting blades, and there is no risk of injury even if you touch it when it is not rotating. It's convenient.

[Effect of idea]

In short, the present invention provides for a conveyor chain between opposing chain plates equipped with scraping protrusions that form a conveyor chain.
In a straw conveyance device in which a chain rail is arranged to pinch and convey the stock part of the waste straw, the tip side of the conveyance chain is located below the chain rail to support the tip part of the waste straw. In addition to providing the ear side rail, the scraping protrusion of the ear tip side chain plate sandwiched between the two rails is configured to protrude higher than the scraping protrusion of the opposing stock side chain plate. Therefore, the waste straw that is conveyed while holding the stock part is supported by the tip side rail provided on the tip side of the conveyance chain, so the tip side does not droop, and the tip side rail is lower than the chain rail. Since the tip of the ear is not pushed upwards, the straw can be kept in a horizontal position at all times, and it is ensured that there will be no delay in conveyance on the tip side due to contact with the machine frame, etc. can be prevented. Even if the amount of straw to be transported increases, the chain plate on the tip side sandwiched between the chain rail and the rail on the tip side reliably conveys the straw by the high protruding raking protrusion. Therefore, regardless of the amount of waste straw, it can always be smoothly and orderly held and conveyed.

[Brief explanation of the drawing]

The drawings show an embodiment of the straw removal conveying device according to the present invention, and FIG. 1 is a plan view of a combine harvester;
FIG. 2 is a side view of the same as above, FIG. 3 is a perspective view of the main part, FIG. Figures 7A and 7B are explanatory diagrams of the operation of the conventional example, Figure 8 is a side view of the straw removal cutter, Figure 9A and Figure 9 are a plan view and side view of the same transmission mechanism, and Figure 10A and Figure 10 are other diagrams. It is a side view and a back view which show a straw removal cutter. In the figure, 11... conveyance chain, 12... scraping protrusion, 13... chain plate, 17... chain rail, 19... tip side rail.

Claims (1)

[Scope of utility model registration request] In a straw removal device in which a chain rail is arranged between opposing chain plates each having a scraping protrusion forming a transfer chain to sandwich and transfer the stock part of waste straw, the top side of the transfer chain is provided with a chain rail. In this method, a tip-side rail is provided which is located below the chain rail and supports the tip of the straw, and the scraping protrusion of the tip-side chain plate sandwiched between the two rails is connected to the scraping protrusion of the opposing stock-side chain plate. A straw removal conveying device characterized in that it is configured to protrude higher than the insertion protrusion.