JPS6317333Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field The present invention is a combine harvester threshing device that automatically controls the handling barrel load by changing the return position from the No. 2 return thrower cylinder to the processing barrel. It is.

(b) Prior Art Conventionally, in a threshing machine equipped with a combine harvester, there has been a known technology in which the position of the return material to the processing cylinder can be adjusted by adjusting the position of the tip of the No. 2 return thrower cylinder. There is.

(c) Problems that the invention aims to solve When harvesting with a combine harvester, when the layer of grain culm thickens due to the condition of the crop, the load on the handling barrel of the threshing device increases, and conversely, it can cause damping-off and diseases even in the field. As the grain culm layer becomes thinner in the affected area, the load on the handling barrel becomes lighter.

In response to such changes, the load on the handling barrel can be adjusted by changing the combine harvester's vehicle speed, but since the engine rotation is fixed to keep the handling barrel rotation speed constant, the vehicle speed cannot be adjusted steplessly using the throttle lever. However, the vehicle speed cannot be adjusted step by step using the speed change lever, making it impossible to adjust the vehicle speed in response to stepless changes in the trunk load.

Therefore, the vehicle speed cannot be changed depending on the performance or failure of crops in the field, and the load on the threshing equipment must be adjusted by changing the flow of grain culms and grains in the threshing equipment. .

In the present invention, this load is adjusted by feeding back the load signal using the load sensor 26 provided in the handling cylinder 9, and automatically controlling the position of the tip sliding part 18 at the tip of the No. 2 reduction thrower cylinder 16 in a stepless manner. By doing this, the return position of the second sorting from the processing cylinder to the handling cylinder is adjusted, and the load on the handling cylinder is kept constant.

(d) Means for solving the problem The purpose of the present invention is as described above. Next, the configuration for achieving the purpose will be explained.

A processing cylinder 19 is provided parallel to the processing cylinder 9, and the processing cylinder 19
In the structure in which the No. 2 reduced product is returned to the processing cylinder 9 after the processing is completed, the tip of the No. 2 reduction thrower cylinder 16 is arranged parallel to the processing cylinder 19, and the tip of the No. 2 reduction thrower cylinder 16 is The sliding part 18 is processed by the cylinder 1.
A load sensor 26 is provided to detect the load on the handling cylinder 9 and to rotate the control motor 28 in forward and reverse directions to adjust the load on the handling cylinder 9. is large, the tip sliding section 18 is moved to the side that reduces the processing time by the processing cylinder 19, and when the load on the processing cylinder 9 is small, the tip sliding section 18 is moved to the side that reduces the processing time by the processing cylinder 19. The processing time is moved to the side where the processing time is increased, and the handling barrel load can be automatically adjusted.

(e) Embodiment The purpose of the present invention is as described above, and the structure of the present invention will be explained based on the structure of the embodiment shown in the attached drawings.

FIG. 1 is an overall side view of the combine harvester.

Grain culms introduced into the pulling device 1 by the weed dividing board 2 are pulled up and the stock root part is cut by the cutting blade 5, and then raked in by the raking device, and then transferred to the stock root conveying device 4 by the vertical conveying device. Convey to the bottom of 6.

The stock part is rapidly raised by the vertical conveyance device 6,
The grain is transferred to the feed chain 7 of the threshing device 8. On the other hand, the tip portion is transferred from the raising device 1 to the upper conveying device 3 and guided to the handling barrel entrance of the threshing device 8.

FIG. 2 is a plan sectional view of the handling cylinder 9 and the processing cylinder 19 with the tip sliding portion 18 positioned rearward, and FIG. 3 is a plan view of the tip sliding portion 18 of the No. 2 reduction thrower cylinder 16.
This is a drawing showing the state in which it is moved forward.

A processing cylinder 19 is arranged parallel to and slightly above the processing cylinder 9, and the processing cylinder 9 has processing teeth 10 fixedly attached to the entire circumference, and the processing cylinder 19 also has processing teeth 20 fixed to the entire circumference. It is fixedly installed.

The grains of the grain culm are threshed by the handling teeth 10 of the handling barrel 9,
It falls from the handling cylinder crimp net 11 onto the sorting plate of the swing sorting device.

The fine grains then fall onto the stroke rack 12 of the oscillating sorting device, fall into the No. 1 conveyor 14 regardless of the wind force of the wind sorting fan 13, and enter the temporary storage tank or paddy bag from the lifting cylinder.

Broken ears and immature grains blown away by the sorting wind of the winnowing fan 13 are thrown up by the second thrower 21 and returned to the processing drum 19 through the second return thrower tube 16.

The present invention relates to the input portion of the tip of the No. 2 reduction thrower cylinder 16 into the processing cylinder 19.

The tip of the No. 2 reduction thrower cylinder 16 extends to the rear plate 32 of the processing barrel, and the tip sliding portion 18 extends forward from the rear plate 32 of the processing barrel and overlaps the processing barrel 19 in plan view. It is configured to be able to protrude to the desired position.

The tip sliding portion 18 is slidable in parallel with the processing cylinder 19, and the direction in which the second sorted material is discharged is directed in the same direction as the axis of the processing cylinder, causing the tip sliding portion 18 to protrude. Then, it is processed at the tip of the processing cylinder 19, returned to the side near the entrance of the processing cylinder 9, and passes through the entire length of the processing cylinder 9 again, improving the sorting accuracy.

When the degree of maturity is good, as shown in FIG.
The waste is processed and returned to the terminal end of the handling cylinder 9, thereby reducing the load on the handling cylinder 9 and preventing further clogging of the handling cylinder.

FIG. 4 is a diagram showing the automatic control mechanism of the present invention.

A load sensor 26 for detecting the load applied to the handling cylinder 9 is arranged on the handling cylinder axis of the handling cylinder 9. The signal detected by the load sensor 26 is transmitted to the control microcomputer device 27 for comparison and judgment.

Then, the command signal determined by the control microcomputer device 27 is transmitted to the control motor 28, and the control motor 28 is rotated in the forward and reverse directions.

A screw rod 29 is formed on the shaft of the control motor 28, and the screw rod 29 is screwed into a female screw body 30.

Further, the female screw body 30 is connected to the No. 2 reducing thrower cylinder 1.
The female screw body 30 moves back and forth as the screw body 29 rotates. 18 is slid.

(f) Effects of the invention Since it is constructed as described above, it works as follows.

When harvesting with a combine harvester, if the crop is in good condition and the grain culm layer is thick, the load on the handling barrel will increase if the combine speed remains the same. The load sensor 26 detects this increase in load.
Detects that the load on the handling cylinder has increased further,
In order to prevent the threshing device from becoming clogged, the control motor 28 rotates to shorten the tip sliding portion 18 and control the reductant to be placed at a position where it only slightly engages the processing cylinder 19.

As a result, the reduced material only slightly engages with the handling cylinder 9, and does not affect the direction in which the load on the handling cylinder 9 increases.

However, in this case, the effect of the processing cylinder 19 cannot be exerted, so the sorting performance will deteriorate and a large amount of fine grains will be lost to the third port. It has been known from experience that even if the processing by the processing cylinder 19 is omitted, the sorting performance will not be greatly affected because the grains have good shedding properties and are less likely to become entangled with straw debris.

Next, when the combine harvester reaches areas that are lodging, withering or diseased, the layer of grain culms becomes thinner.
When the speed is constant, the load sensor 26 provided on the handling cylinder 9 detects that the load is small.

In this case, it is possible to still apply a load to the handling barrel 9, and it has been found that broken ear grains and grains with attached stalks are likely to occur, and the grain culm is also likely to break and there is a lot of entangled straw debris. Therefore, the tip sliding portion 18 is extended to adjust the treatment cylinder 19 and the handling cylinder 9 so that the treatment can be carried out for a long time.

Through the automatic control, the load on the handling cylinder 9 is kept constant,
Moreover, the processing cylinder 19 can be operated in accordance with the degree of maturity, and the sorting accuracy can be kept constant.

(g) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, the performance or failure of grain culms in the field can be detected from the load on the handling cylinder 9 using the load sensor 26, and the degree of processing in the processing cylinder 19 is changed depending on the performance or failure. It is possible to keep the load on the barrel 9 substantially constant without changing it much, and it is possible to eliminate clogging of the threshing device caused by poor quality.

Secondly, by changing the degree of action of the processing cylinder 19 depending on the quality of the product, especially when sorting out lodging or withered grain culms,
Since the processing cylinder 19 can be operated sufficiently, the sorting performance can be improved.

In addition, when the quality is good, there are few fine particles in the No. 2 reduced product, so even if the degree of action of the processing cylinder 19 is reduced, the sorting performance will not be reduced. Therefore, even in this case, a high state of sorting performance can be maintained.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of the combine harvester, Fig. 2 is a plan cross-sectional view of the handling cylinder 9 and processing cylinder 19, and Fig. 3 is a drawing with the tip sliding part 18 of the No. 2 reduction duct 16 moved forward. , FIG. 4 is a drawing of the automatic control device of the present invention. 9... Handling cylinder, 16... No. 2 reduction duct, 18...
... Tip sliding part, 19 ... Processing cylinder, 26 ... Load sensor, 28 ... Control motor.

Claims (1)

[Scope of utility model registration request] A processing cylinder 19 is provided parallel to the processing cylinder 9, and the processing cylinder 19
In the configuration in which the No. 2 reduced product is returned to the processing cylinder 9 after the processing is completed, the tip of the No. 2 reduction thrower cylinder 16 is arranged parallel to the processing cylinder 19, and the tip of the No. 2 reduction thrower cylinder 16 is The sliding part 18 is processed by the cylinder 1.
A load sensor 26 is provided to detect the load on the handling cylinder 9 and to rotate the control motor 28 in forward and reverse directions to adjust the load on the handling cylinder 9. is large, the tip sliding section 18 is moved to the side that reduces the processing time by the processing cylinder 19, and when the load on the processing cylinder 9 is small, the tip sliding section 18 is moved to the side that reduces the processing time by the processing cylinder 19. A threshing device for a combine harvester, characterized in that the processing time is moved to the side where the processing time is increased, and the handling barrel load can be automatically adjusted.