JPH0411466Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention has a rotating puller attached to the rear of the lifting device with three or more rows, which pulls the stock side of the grain culm of each row to the rear of the machine. A pair of left and right first rotary gears are installed in parallel to each other, and the left and right
The stock head clamping and conveying device is configured to extend rearward in a narrowed manner so that the harvested grain culms join together at the end of the conveyance, and the stock head of the combined grain culm is connected to a threshing feed arranged along one side of the machine body. The present invention relates to a grain culm conveying device for a combine harvester equipped with a second grain clamping and conveying device for conveying toward the starting end of a chain, and specifically relates to an improvement for shortening the longitudinal length of the conveying structure.

[Conventional technology]

An example of a conventional grain conveying structure having the above structure is shown in Japanese Utility Model Application No. 57-28624.
In other words, as shown in FIG. 5, three rotary packers 12A, 12B, and 12C that scrape the grain stalk, a pair of left and right first stalk clamping and conveying devices 14a, 15a,
A pair of left and right first ear locking and conveying devices 14b, 15
It is configured for 3 rows with b, and the second grain head clamping and conveying device 17, etc., and supplies the harvested grain culm to the feed chain 11 on the left side of the machine, and the first grain culm on the right side of the machine
Specifically, the delivery angle of the first stock clamping and conveying device 15a is set to be as close to the left-right direction of the machine as possible so that the conveying end of the stock clamping and conveying device 15a is as close to the feed chain 11 as possible over a short distance. In order to shorten the longitudinal length of the grain culm conveying structure and to avoid interference between the conveying path A of the first grain clamping and conveying device 15a and the central pucker 12B, the central pucker 12B is set to have a small diameter.

[Problem that the invention attempts to solve]

However, while the grain culm conveying structure with the above configuration allows the longitudinal length to be set small, the diameter of the central culm car is set to a small diameter, so the grain culm raking speed of the culm car on the right side of the machine and the grain culm raking speed of the center culm car are limited. It requires a special transmission structure, and when raking the grain culm, the radius of rotation that acts on the grain culm is different between a large-diameter pucker and a small-diameter pucker, so the raked grain There was a problem in that the posture of the culm was likely to be disturbed, and that the parts had less versatility and manufacturing costs were increased because the culms did not have the same shape.

To solve this problem, we used packers with the same diameter, and by moving the center packer toward the front of the machine, we avoided interference with the conveyance path of the first stock clamping and conveying device and shortened the longitudinal length of the structure. It's okay to wear it, but
Since the front-to-back length of the grain culm conveying structure increases by the distance by which the packer is deviated, the front-to-back length is not shortened in the end.

An object of the present invention is to provide a grain culm conveying structure for a combine harvester that allows for shortening the front and rear lengths of the harvesters while arranging the same-diameter packers in a straight line in the left-right direction of the machine.

[Means for solving problems]

The feature of the present invention is that the elastic clamping rail in the first stock conveying device on the opposite side of the feed chain is pressed against the conveying chain to curve the conveying chain in a concave manner, and the conveying chain is guided from the back side. A small gap is formed between the starting end portion of the fixed guide rail and the conveyance chain, and the elastic force toward the conveyance chain at the front of the elastic clamping rail is applied to the conveyance at the rear of the elastic clamping rail. It is set to be stronger than the elastic force on the chain side, and its action and effect are as follows.

[Effect]

In other words, as described above, since a recessed curved portion is formed, simply setting this recessed curved portion to a position where an adjacent packer can enter will prevent interference between the packer and its grain culm conveyance path. Even if the conveyance chain is placed at an angle that was
Moreover, since the guide rail and the elastic clamping rail are set and arranged as described above, if the amount of grain culm supplied to the conveyance chain is the normal amount or less than this, the conveyance chain will deviate toward the guide rail. By doing so, it is possible to transport the grain without damaging it, and
Only if the amount of grain stalks to be fed into the conveying chain is very large, the elastic clamping rails are deflected against the elastic force and allow the grain stalks to be transported.

[Effect of idea]

Therefore, by making a relatively simple improvement in which a recessed curved portion is formed by pressing the elastic clamping rails, it is possible to easily transport grains while installing packers of the same diameter in a straight line in the left and right direction of the machine. A culm conveying structure was obtained by shortening its longitudinal length.

In particular, in this grain culm conveying structure, the arrangement of the guide rails and elastic clamping rails prevents inconveniences such as bending of the grain culms, regardless of the amount of grain culms supplied. ing.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

As shown in FIGS. 1 to 3, a threshing device 3, a control section 4, and an engine 5 are mounted on a traveling body 2 equipped with a pair of left and right crawler traveling devices 1, 1, and a The reaping pretreatment section 6 is connected by a hydraulic cylinder 7 so as to be vertically swingable about a fulcrum P.

The reaping pre-processing section 6 includes four sets of lifting devices 9 for lifting the planted grain culm into an upright position on a pipe frame 8 that is vertically swingable around the fulcrum P. Clipper-type reaping device 1 that cuts the base of the stock
0 and a conveying means for conveying and supplying the harvested grain culms to a feed chain 11 constructed along the left lateral outer surface of the threshing device 3 to constitute a four-row reaping combine, and the conveying means is described below. Explain in detail.

As shown in FIG. 1, above the reaping device 10, rotary packers 12a, 12b, 12c, and 12d are arranged linearly in parallel in the left-right direction of the machine, each pushing four rows of harvested grain culms backward. At the same time, an auxiliary belt 13 with a conveying protrusion extends from the top of each to the front.
. . . are extended, and are configured so that the raised grain culm can be lightly pulled toward the reaping device 10 and cut without falling forward. Then, the left and right rotating gear cars 12a, 12
d is driven and rotated, and the two central rotating gears 12b and 12c are interlocked with the adjacent outer gears 12a and 12d, respectively, so that the left side 2
A pair of rotary packers 12 in which the harvested grain culms of the rows face each other.
Immediately after harvesting, the harvested grain culms are raked and merged by the grain culms a and 12b, and the two reaped grain culms on the right side are similarly raked rearward by the rotary packers 12b and 12c.

Further, above the rotary packers 12a and 12d at the left and right ends, there are a pair of left and right first conveyance devices 14 and 15 that support the harvested grain culm in an upright position and convey it rearward and upward through two conveyance paths on the left and right. is provided.

Each of the conveyance devices 14 and 15 includes first clamping conveyance devices 14a and 15a, and first locking conveyance devices 14b and 1, respectively.
5b, each stock clamping and conveying device 14a, 1
The chain constituting 5a is a rotating packer 12a,
It is also used as the drive chain of 12d.

Both conveying devices 14 and 15 are arranged in a V-shape that narrows at the rear, and the conveyed grain culms of the two-row system are finally merged at a position near the center of the cutting width at an appropriate distance behind the reaping device 10. .

In addition, the first locking conveyance device 15b, which locks and conveys the tip of the first conveyance mechanism 15 on the right side of the machine, continues to extend rearward toward the front end side of the feed chain 11, and the lower part of the conveyance end side A relay clamping and conveying device 16 is equipped.

Further, a second stock head clamping and conveying device 17 is extended in a cantilevered manner toward the rear from the lower part of the grain culm merging location, and the merged grain culm is transferred to the second stock head clamping and conveying device 17.
and upper and lower 2 in the rear half of the first locking and conveying device 15b.
After being supported on tiers and conveyed rearward, it is laid down on its side and fed to the front part of the feed chain 11.

The second plant clamping and conveying device 17 is configured to be able to swing vertically around the fulcrum axis X on the front end side, thereby shifting the grain culm in the direction of the culm relative to the feed chain 11. , is provided with a function of adjusting the amount of grain culm inserted into the threshing device 3, the so-called handling depth.

As shown in FIG. 3, a plurality of rod-shaped frames 18 extend further forward from the pipe frame 8.
... is extended, and the lower part of the lifting device 9 is attached to the front end of the frame 19 through a frame 19, and a frame 20 extends upward from the rod-like frame 18. . . . and the frame 21 extending rearward from the back surface of the lifting device 9 .
are arranged so that a space is formed below each,
Mud, straw waste, etc. are prevented from accumulating below the pack car 12.

In addition, in the right side first holding and conveying device 15a, the lower conveying side is the feed chain 11 side of the machine body, that is,
By tilting it toward the left side, the longitudinal length of the reaping pretreatment section can be shortened, but in order to avoid interference between the conveyance path of the conveyance device 15a and the adjacent packer 12c due to this tilt, the following structure is adopted.

That is, as shown in FIGS. 1 and 2, the first clamping and conveying devices 14a and 15a each consist of a wound conveying chain C having protrusions on the outside, and the first clamping and conveying device on the left side of the machine 14a has two springs 22, 22 biased equally toward the conveyance chain C side on the conveyance path side of the conveyance chain C, a clamping rail 23 is disposed, and is guided to a position facing the conveyance chain C on both sides. A rail 24 is provided so that the harvested grain culm scraped by the two packers 12a and 12b on the left side of the machine is held between a conveyance chain C and a clamping rail 23 and sent to the rear of the machine.

Moreover, the first side opposite to the feed chain 11
The stock clamping and conveying device 15a, that is, the first stock clamping and conveying device 15a on the right side of the machine, has an elastic clamping rail 25 located on the conveyance path side of the conveyance chain C, and a spring 26 is provided at the rear of the rail 25.
Furthermore, a spring 27 stronger than the spring 26 is provided at the front of the rail 25. And the rail 25
By press-contacting the front part of the transport chain C to form a recessed curved part, the first stock clamping and transporting device 15a
The interference with the pack car 12c that occurs when the car is tilted toward the right side of the fuselage is eliminated by entering the concave curved portion.

A fixed guide rail 28 for guiding the conveyance chain C is installed on the back of the conveyance chain C so that a small gap is formed between the starting end portion and the conveyance chain C, and the rear end portion and the conveyance chain C are connected to each other. The left and right conveyor chains C and C are respectively provided with tension mechanisms 29 and 30 for maintaining the tension of the chains at a constant level.

Incidentally, if the amount of harvested grain culm supplied to the conveyance chain C on the right side of the machine is normal or less than this, the conveyance chain C will be deviated toward the guide rail 28 side by the tension mechanism 30. The grain culms can be transported without damaging them, and only when the amount of grains supplied to the conveyance chain C is extremely large, the elastic clamping rails 25 are deflected against the elastic force to remove the grain culms. The structure allows for the transportation of

In addition, with this combine harvester, during harvesting work,
It is configured to detect planted grain culm rows with a sensor (not shown) and to perform automatic steering control that follows the grain culm rows by driving the aircraft based on the detection results. And the steering operation article is the fourth
As shown in the figure, this is done by a pair of left and right steering clutch arms 32a, 32b provided on the front of a mission case 31 that drives the crawler traveling devices 1, 1. That is, on the front surface of the mission case 31, there is a block 33 containing hydraulic cylinders 33a, 33b which can be driven and operated independently by the detection signal from the sensor, and piston rods 34a, 34b of the hydraulic cylinders 33a, 33b are in contact with the block 33. cam-shaped free swinging members 35a, 35b and the steering clutch arms 32a, 32b are provided, and the driving operating force of the hydraulic cylinders 33a, 33b is applied via the members 35a, 35b. Operate the steering clutch arms 32a, 32b. Furthermore, since these steering operation systems are provided on the front surface of the transmission case 31, mud and the like tend to adhere thereto. Therefore, a nozzle 36 for spraying lubricating oil onto these operating systems is provided on the front surface of the block 33, so that the lubricating oil can be applied at regular intervals or at any time.

Incidentally, a roller 37 is attached to the tip of the steering clutch arm 32, and when this roller 37 rides on the cam surface of the member 35, the steering clutch is operated to disengage.

[Another example]

In addition to the above-described embodiments, the present invention may be applied to a combine harvester capable of cutting three or more rows, for example.

[Brief explanation of the drawing]

The drawings show an embodiment of the grain culm conveying device for a combine harvester according to the present invention, and FIG. 1 is a schematic plan view of the device;
Fig. 2 is a sectional view showing the packer elastic clamping rail, conveyance chain, etc., Fig. 3 is a side view of the front part of the combine, and Fig. 4 is a front view of the transmission case.
FIG. 5 is a schematic plan view showing a comparative example of a conveyance device. 9...Lifting device, 11...Feed chain, 12...Rotating puller, 14a, 15a...
Left and right first stock head clamping and conveying device, 17...Second stock base clamping and conveying device, 25...Elastic clamping rail, 28...
...Fixed guide rail, C...Transportation chain.

Claims (1)

[Scope of utility model registration request] Behind the pulling device 9 with three or more rows, rotary packers 12 for scraping the stock side of the grain culm of each row toward the rear of the machine are installed in parallel on the left and right. A pair of left and right first stock clamping and conveying devices 14a and 15a are extended rearward from the rotation axis in a narrowed rearward manner so that the reaped grain culms are merged at the conveyance terminal side, and A grain culm conveying device for a combine harvester, which is provided with a second grain culm holding device 17 for conveying the culm toward the starting end of a threshing feed chain 11 disposed along one side of the machine body, the feed A fixed guide rail that presses the elastic clamping rail 25 in the first stock transfer device 15a on the opposite side of the chain 11 to the transfer chain C to curve the transfer chain C in a concave manner, and guides the transfer chain C from the back. 28
A small gap is formed between the starting end side of the elastic clamping rail 25 and the transport chain C, and the elastic force toward the transport chain at the front part of the elastic clamping rail 25 is applied to the transport chain C at the rear part of the elastic clamping rail 25. The grain culm conveying device of the combine is set to be stronger than the pressure force on the chain side.