JPS6235726B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a grain culm conveying device for conveying harvested grain culms to a threshing machine.

A combine is equipped with a reaper and a threshing machine.
The reaper is equipped with a grain culm conveying device. The structure of this grain culm conveying device differs depending on the model, and a multi-row reaping machine with four or more rows is generally configured as follows. For example, in the case of 4-row mowing, the 4-row grain culms planted in the field are gathered into 2-row grain culm bundles by the splitting body and the raking device, and the grain culms are separated into a pair of left and right front rows arranged in a figure eight shape. It is scraped into the conveyance path of the conveyance device. This front-stage conveyance device further includes an ear conveyance device (front) and a root conveyance device (front) arranged above and below, and the grain culms collected in two rows are separated into the ear part and the root part. After being conveyed by both of these conveying devices (front), at the end of the conveyance, they are taken over by both the tip and root conveying devices (rear), where they join together, and are conveyed to the threshing machine as a single grain culm bundle.

The root conveying device (front) of such grain culm conveying devices (front, rear) has conventionally been constructed as shown in FIG. In other words, the root chain (front right) 1 and the root chain (front left) 2, which are arranged in a figure eight shape, each have a cross-sectional core supported by a holder 3 and biased toward the chains 1 and 2 by a pinching spring 4. Letter-shaped clamping rods 5 and 6 are provided along the running ends. These clamping rods 5 and 6 clamp the grain culms between the root chains (front right) 1 and (front left) 2, and depending on the number of grain culms, they are shown as solid lines and chain lines in the figure. Move to.

In the conventional root conveying device (front) configured in this way, when the amount of grain culms is large, the left and right clamping rods 5,
There is a possibility that the end portions of the clamping rods 5 and 6 may interfere with each other as shown by the chain lines in the figure, so in order to avoid this, it is necessary to shorten the end portions of the clamping rods 5 and 6. When the amount is small, the terminal ends of the clamping rods 5 and 6 become separated from each other, making it difficult to smoothly transport and transfer the grain culms at the merging point.

The present invention was made in view of the above points, and one of the pair of clamping rods supported along the running ends of the left and right root chains arranged in a figure-eight shape is fixed, and this invention corresponds to this. The present invention provides a grain culm conveying device for a reaper configured to improve the conveyance and handover performance of grain culms at a merging point by pressing the root chain from the inside with another clamping rod.

Hereinafter, its configuration and the like will be explained in detail with reference to embodiments shown in the drawings.

2 to 4 show the grain culm conveying device according to the present invention, FIG. 2 is a plan view of a reaper implementing this, FIG. 3 is a side view, and FIG. 4 is a root conveying device (front view). ) is a plan view of the main part. In these figures, a reaping machine 11 is supported by a reaping frame 12 and a suspension arm 13, which are pivotally supported at the front end of a threshing machine (not shown), and the suspension arm 1 is supported by a hydraulic cylinder.
By swinging 3, the cutting height is adjusted by swinging around both pivot parts. A plurality of dividing rods 15 extend forward along the ground from a horizontal member 14 integrally provided at right angles to the lower end of the reaping frame 12. is equipped with five cutting bodies 16 that separate the grain culms in the field. In addition, four moving devices 17 are erected at the rear of this weeding body 16, with both upper and lower ends supported by a lifting pipe 18 and a stay 19, and a lug 21 that runs together with a lifting chain 20. The structure is such that the tip of the grain culm is conveyed upward and the grain culm is erected. In addition, branching rod 15
A clipper-shaped cutting blade 22 for cutting the root portion of the erected grain culm is supported close to the ground at the rear of the culm. Above the cutting blade 22, four raking drive bearings 23 are provided to protrude obliquely upward, and the upper end of the cutting drive shaft supported by these bearings has a
A raking belt 24 transports the root part of the grain culm raised by the raising device 17 to the reaping position by the cutting blade 22
are arranged in an eight-character pattern, two each. moreover,
Coaxially with this, there is a flat cylindrical scraping case 25a that rotates in the direction shown by arrow A in FIG. A raking device 25 is provided, which rakes the grain culms conveyed by the raking belt 24 between the two raking devices 25 on the left side and between the two raking devices 25 on the right side, respectively. It is configured as follows.

Of the four raking drive shafts, sprockets 26 and 27 are mounted on the outer two raking drive shafts, respectively, and are located between the raking belt 24 and the raking device 25. , one sprocket 2
6 and the sprocket 28 at the center in the machine width direction diagonally above, there is a root chain (front right) 29 that runs in the direction shown by arrow B in the figure and is guided by a plurality of guide rollers 30. It is strung up.
In addition, between the other sprocket 27 and the sprocket 31 near the sprocket 28, there is a root chain (front left) that runs in the direction shown by arrow C in the figure.
32 is guided by a plurality of guide rollers 33,
It is strung in an eight-shape with the base chain (front right) 29. And these two root chains
In the triangular space formed between 9 and 32, a clamping rod (right) 34 and a clamping rod (left) 35 having a U-shaped cross section are attached to both base chains 29, 32.
They were supported along each running edge. Of these, the clamping rod (right) 34 is fixed to the mounting plate 36 with bolts 37, and the clamping rod (left) 35 is fixed to the holder 3 fixed to the mounting plate 36.
The legs are slidably supported by 8, and
A clamping spring 39 is mounted within the holder 38 and urges the clamping rod (left) 35 to press against the running end of the root chain 32. The clamping rod (right) 34 and the clamping rod (left) 35 are arranged so that their tips 34a and 35a are very close to each other at the position where the clamping rod (left) 35 is closest to the root chain (front left) 32. Its length and shape are set. Furthermore, root chain (front right) 2
A clamping rod (inner) 41 supported by a holder 40 is provided inside the running wheel 9 and is biased toward the chain 29 by a clamping spring 42 within the holder 40.

Root conveying device (front) 43 configured in this way
Above is a tip chain 45 with lugs 44.
A pair of left and right tip conveying devices (front) 46 consisting of a tip guide (not shown) supported along the tip trajectory of the lug 44 is mounted in an eight-shape approximately corresponding to the root conveying device (front) 43. It is suspended. Further, diagonally above the root conveying device (front) 43 and the tip conveying device (front) 46, there is a supply adjustment chain (none of which is shown below) that can be freely adjusted in swing and a tip conveying device (rear).
A base conveyor (rear) is provided with its starting end facing the confluence of the terminal ends of the conveying devices 43 and 46, and furthermore, diagonally above the supply adjustment chain, a root conveying device (rear) and a tip conveying device (rear) are provided that face the terminal end of the conveying devices 43 and 46. It is mounted facing the front end of the threshing machine.

The reaping and transporting operation by the reaper 11 configured as described above will be explained by taking four rows of reaping as an example. Grain culms to be planted in the field are divided into 1st division as the machine advances.
6, the tip is pulled up and moved to the device 17.
The cutting blade 22 cuts the cutting blade 22 , and the cutting blade 22 cuts the cutting blade 22 . The harvested grain culm is
A scraping rod 25 around the root part of a scraping device 25
b, it is scraped into the conveyance path between the adjacent scraping cases 25a, and the tip is lifted up and released from the device 17. The grain culms collected into two grain culm bundles and raked into the conveyance path are conveyed by the root and ear conveying devices (front) 43 and 46, respectively, to the conveyance terminal end. After being merged into one row at , the root portion is sequentially transferred to the adjustment chain and the root conveying device (rear), and the tip portion is transferred to the tip conveying device (rear) and then conveyed to the threshing machine.

Among the reaping and conveyance performed in this manner, the conveyance operation by the root conveyance device (front) 43 will be described in further detail. That is, one of the grain culms grouped into two rows at the transport start end of the root conveying device (front) 43 is attached to the fixed clamping rod (right) 34 and the clamping rod (inner) 41 to which it is fixed. The other grain culm is conveyed while being held by the root chain (front right) 29 pressed by the root chain (front left) 32,
It is conveyed while being held by a holding rod (left) 35 which is biased and pressed by a holding spring 39.
Then, they meet at the end of both armrests 34 and 35, and
After being assembled into rows, both base chains 29,
32 and conveyed, and taken over to the subsequent section.
If the amount of grain culms to be conveyed changes during such transfer, the root chain (front right) 29 will change to the clamping rod (right) 3.
4, and the clamping rod (left) 35 moves forward and backward with respect to the root chain (front left) 32. That is, the clamping rod (right) 34 is fixed at the position shown in FIG. 4, and only the clamping rod (left) 35 moves between the solid line and the chain line in the figure. Therefore, even if both the clamping rods 34 and 35 are formed to be long so that the tip portions 34a and 35a are very close to each other when the amount of grain culms to be transported is small, when the amount of grain culms to be transported is large, both the tip portions 34a and 3
5a does not interfere. By doing this, even when there is a large amount of grain culm, and even when the amount of grain culm is small, the grain culm will not leak from the junction of the two clamping rods 34 and 35 and fall off from the conveyance, and the grain can be conveyed smoothly. It will be inherited later.

In this embodiment, one of the two clamping rods 34 and 35 is of the fixed type and the other is of the movable type, but both are of the fixed type, and the root chain (front left) 32 and the root chain (front right) 29 are used. Similarly, chain 32
It may be pressed from inside with a movable clamping rod.

As is clear from the above description, according to the present invention, in the grain culm conveying device of a reaper, one of the pair of clamping rods supported along the running ends of the left and right root chains arranged in a figure eight shape. Let be a fixed type,
By configuring the corresponding root chain to be pressed from the inside by another clamping rod, there is no possibility that the tips of the clamping rods will interfere with each other even if the clamping rod moves as the amount of grain culms to be conveyed fluctuates. Since the clamping rods can be formed long so that their tips are very close to each other, there is no possibility that the grain culms will leak from the confluence of the clamping rods and fall off from the conveyance, regardless of the amount of grain culm being transported. Grain culm transportation and handover performance are significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the main part of a conventional front-stage root conveyance device, FIGS. 2 to 4 show a grain culm conveyance device for a reaper according to the present invention, and FIG. 2 is a plan view of a reaper implementing the same. Figure 3 is a side view, Figure 4 is also a side view.
The figure is a plan view of the main part of the root conveyance device (front). 11...reaper, 29...root chain (front right),
32... Root chain (front left), 34... Pinching rod (right), 35... Pinching rod (left), 41... Pinching rod (inside),
42...Pinching spring, 43...Root conveyance device (front).

Claims (1)

[Claims] 1. One clamping rod 3 of the pair of left and right clamping rods 34, 35 in the base conveyor device arranged in an eight-shape
4 is fixed, and another clamping rod 41 is biased by a clamping spring 42 inside the corresponding conveyor chain 29.
The other clamping rod 35 of the pair of clamping rods is provided so as to be movable back and forth and is biased by a clamping spring 39.