JP2003319708A - Power transmission structure for combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To carry out proper reaping and separation operations in response to the amount of reaped grain culms even if the speed of a vehicle is changed in a combine harvester which is equipped with a feed chain for transporting the reaped grain culms at a speed interlocked with the speed of the vehicle and in which the transported reaped grain culms are threshed at a threshing part and the threshed unhulled rice is classified and separated by a separation part. <P>SOLUTION: The power transmission structure for the combine harvester has constitution that the drive part of a separation and operation member attached to the separation part is connected to the power transmission route 34 of the feed chain 24 and the drive speed of the separation and operation member is interlocked with the transportation speed of the feed chain 24. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission structure of a sorting section in a combine in which a feed culm conveying speed of a feed chain is linked to a vehicle speed.

[0002]

2. Description of the Related Art Generally, a combine harvester for cutting and threshing grain stalks is provided with a feed chain for transporting the harvested grain stalks at a speed that is linked to a vehicle speed, and the grain stalks transported by the feed chain are threshed at a threshing section. However, it is known that the treated product in which the dehulled paddy, the cut straw and the like are mixed is selected in the sorting section to separate and collect the first product.

As described above, in the case where the transportation speed of grain culms is linked to the vehicle speed, even when the cutting amount of grain culms is increased / decreased according to the change in vehicle speed, such as during high-speed cutting or low-speed cutting. Since the transport speed of the feed chain also increases or decreases in conjunction with this, the cut culm can be smoothly transported toward the threshing section.

However, in the sorting section for sorting the processed products after threshing, the sorting operation members such as the swing sorting body, the sardine fan, the dust-exhaust fan, the auxiliary blower fan, etc. have conventionally been used to rotate the engine regardless of the vehicle speed. Since it was driven at a constant speed linked to the number, if the cutting amount of the grain culms increased or decreased due to changes in vehicle speed,
There is a problem that a good sorting effect cannot be obtained because the amount of paddy on the rocking sorting body is not constant or the sorting wind does not have an appropriate strength with respect to the amount of paddy.

That is, in order to obtain a good selection effect, it is necessary to completely remove the cut straw mixed in the paddy, and according to the survey data on this point,
If sufficient paddy is present on the rocking plate and the chaff sheave of the rocking sorter, the cut straw or the like is transported backward so as to slide on the upper surface of the paddy and discharged. However, when the paddy has almost disappeared, many straws pass through the chaff sheave and fall into the gutter as it is.

Also, in relation to the sorting wind, when the chaff sheave is set to a predetermined opening, even if the straw or the like that has passed through the chaff sheave reaches the first half side of the Glen sieve, it is not recognized that it still passes through the Glen sheave. There was one that passed through the Glensive from around the latter half of the Glensive. This is because there are a lot of paddy on the first half side of the Glensieve, and because the wind speed of the sorting wind is quite strong, it is difficult for straw and the like to pass through the Glensieve, while the latter half of the Glensieve has almost no wind. It is estimated that it is easy to pass because it is.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances in order to solve these problems, and the sorting operation member of the sorting unit is set at a feed speed of the feed chain. By driving them in conjunction with each other, sufficient paddy can be present on the rocking sorting body, and the sorting wind can be adjusted to have an appropriate wind speed with respect to the amount of paddy to obtain a good sorting effect. Moreover, it is an object of the present invention to provide a power transmission structure of a combine that can easily transmit power in the selection unit.

[0008]

Means for Solving the Problems In order to solve the above-mentioned problems, the technical means taken by the present invention is to provide a feed chain for conveying a cut grain culm at a speed interlocked with a vehicle speed, and convey the cut grain. In a combine for threshing culms in the threshing unit and sorting and separating the threshed rice in the sorting unit, the driving unit of the sorting operation member provided in the sorting unit is connected to the power transmission path of the feed chain to perform the sorting operation. It is characterized in that the driving speed of the member is configured to be linked to the feed speed of the feed chain, and is characterized in that the frequency of the rocking sorting body provided in the sorting unit is linked to the feed speed of the feed chain.
Further, the number of rotations of the sorting fans provided in the sorting section is interlocked with the feed speed of the feed chain.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described in detail based on an embodiment shown in the drawings. Figure 1
In FIG. 1, reference numeral 1 denotes a threshing machine mounted on a combine, and in a handling chamber 2 provided in the front part of the threshing machine 1, a handling cylinder 4 having a handling tooth 3 fixed thereon is rotatably mounted. A processing chamber 5 in the front-rear direction is arranged in parallel with the handling chamber 2 on one side of the rear portion of the handling chamber 2.

Inside the processing chamber 5, a processing cylinder 7 having processing teeth 6 fixedly mounted is mounted in parallel with the processing cylinder 4, and a receiving net 8 is provided.
The mixed processed product such as panicle culm that could not leak
When it is sent from the handling chamber 2 to the processing chamber 5, the rotating processing drum 7 further processes it to separate the grains, and the straw waste such as straw is discharged from the dust outlet 9 at the rear of the processing chamber 5. Has become.

Below the handling chamber 2 and the processing chamber 5, there is provided a sorting unit 10 for sorting the leaked grains and the like, and this sorting unit 10 has a swing function as a sorting operation member. A sorting body 11, a Karako fan 12, a dust exhaust fan 13, an auxiliary blower fan 14 and the like are arranged.

The rocking sorting body 11 includes a rocking flow plate 15,
It is composed of a chaff sheave 16, a Glen sheave 17, etc., and is erected in the sorting section 10 so as to be swingable back and forth.
Further, the Karato fan 12 is disposed in the front part of the machine body below the swing sorting body 11, the dust-exhaust fan 13 is disposed below the rear part of the sorting portion 10, and the auxiliary blower fan 14 is the center of the swing sorting body 11. A sorting air passage is provided below the section, and blows through from the lower front portion of the swing sorting body 11 toward the upper rear portion by the operation of these sorting fans. Reference numeral 18 is a stroll.

Reference numeral 19 is a lifting cylinder for lifting and transporting the selected grains from the first spiral 20 and collecting them in the paddy tank 21. Reference numeral 22 is for lifting the second grain from the second spiral 23 and swinging the sorting body. It is a reduced helix released on 11.

Reference numeral 24 denotes a feed chain arranged along the mouth of the handling chamber 2, and above the feed chain 24, a pinching rail biased by a spring is disposed. . Then, the grain culm cut by the pretreatment unit is fed to the feed chain 24 by a pretreatment conveying device (not shown).
When it is supplied to the starting end side, the grain culm whose sandwich side is sandwiched by the feed chain 24 and the sandwiching rail is threshed by the handling barrel 4 which rotates in the process of being transported along the handling mouth, Grains and the like that have leaked through the receiving net 8 are sorted by the swing sorting action of the swing sorting body 11 in the sorting unit 10 and the wind sorting action by the sorting wind. In addition, the straw after the threshing treatment is inherited from the end of the feed chain 24 to the straw carrier 25 and shredded by the straw cutter 26 attached to the rear part of the machine, or is discharged to the rear of the machine as it is. .

The amount of grain stalks cut by the pretreatment section is
The feed chain 2 which increases and decreases according to the change in vehicle speed, and which conveys the cut culm by inheriting it from the pretreatment conveying device.
No. 4 is provided with a continuously variable transmission device in a power transmission path from the engine 27, and conveys the grain stalks at a conveyance speed linked to the vehicle speed.

Also, a swinging sorting body 11 as a sorting operation member in the sorting section 10, a pick-up fan 12, and a dust removal fan 13 are provided.
And the like correspond to the amount of grain culms transported by the feed chain 24 by connecting the drive unit to the power transmission path of the feed chain 24 and setting the drive speed linked to the transport speed of the feed chain 24. Appropriate sorting work is performed.

Next, the swing sorting body 1 as a sorting operation member.
A case where 1 is set as the drive speed that is linked to the transport speed of the feed chain 24 will be described based on the power transmission system diagram of FIG. First, the power from the engine 27 is driven by the V-belt to drive the drive shaft 2 that also serves as the rotating shaft of the Kara-mino fan 12.
8 is input. Then, an input shaft 31 of a transmission gear case 30 is transmitted from the drive shaft 28 via a belt type continuously variable transmission 29.
And a power transmission path 34 for transmitting power from the output shaft 32 of the transmission gear case 30 to the drive sprocket 33 of the feed chain 24.

The belt type continuously variable transmission 29 includes a split pulley 36 on the input shaft 31 side, the pitch diameter of which is changed by an electric motor 35, and a split pulley 37 on the drive shaft 28 side urged in the pitch diameter increasing direction. When the pitch diameter of the split pulley 36 is changed by suspending the V-belt 38, the pitch diameter of the other split pulley 37 is also changed to shift gears. 39 is a potentiometer for detecting the pitch diameter change position of the split pulley 36, and by setting the pitch diameter change position of the split pulley 36 detected by this potentiometer 39 to a predetermined position linked to the combine vehicle speed,
The feed chain 24 has a transport speed that allows the harvested grain culms to be transported according to the vehicle speed.

Then, a swing rod 40 serving as a drive portion of the swing selecting body 11 is interlockingly connected to a side end portion of the input shaft 31 which is changed in speed in the power transmission path 34, whereby the swing selecting body 1 is connected.
The frequency of oscillation around 1 is linked to the transport speed of the feed chain 24.

Further, as described above, the sorting section 10 is provided with the Karafu fan 12, the dust-exhaust fan 13, the auxiliary blower fan 14 and the like. The rotation speed of these sorting fans is determined by the feed chain 24. The selection wind having an appropriate strength according to the grain culm transported by the feed chain 24 is generated in association with the transport speed.

Now, the one in which the Karatsunoh fan 12 as a selection fan is interlocked with the conveying speed of the feed chain 24 will be described with reference to the power transmission system diagram of FIG. Reference numeral 41 denotes a transmission shaft to which the power from the engine 27 is transmitted by V-belt transmission, and the transmission shaft 41 and the transmission gear case 3
0 type input shaft 31 and the belt type continuously variable transmission 29 described above
As described above, the power transmission path 34 through which the power is transmitted from the output shaft 32 of the transmission gear case 30 to the drive sprocket 33 of the feed chain 24 is formed.

Then, the input shaft 31 that is changed in speed by the belt type continuously variable transmission device 29 is extended to the Kara sono fan 12 side and is also used as the Kara sono shaft 42 for driving the Kara sono fan 12.
The feed chain 24 is set to a transport speed that is linked to the vehicle speed, and the rotation speed of the karako fan 12 is linked to the transport speed of the feed chain 24.

Since the present invention is configured as described above,
In performing the mowing and threshing work, the feed chain 24 arranged at the handle conveys the mowing culms at a speed that is linked to the vehicle speed. Therefore, even if the vehicle speed changes and the amount of the mowing culms increases or decreases, the feed chain 24 There will be no disturbance in the transportation of grain culms due to.

Further, the rocking sorting body 1 provided in the sorting unit 10
1, or the sorting operation member such as the Karatake fan 12, the dust-exhaust fan 13 and the like operates at a speed that is linked to the transport speed of the feed chain 24, so that a good sorting work is performed according to the amount of grain to be transported. be able to.

Moreover, since the drive part of the sorting operation member is connected to the power transmission path 34 of the conventional feed chain 24, the power transmission structure of the sorting part 10 can be simplified.

Further, the swinging sorting body 11 provided in the sorting unit 10
When the number of vibrations of the feed chain 24 is interlocked with the feed speed of the feed chain 24, since the treated object made of paddy, straw, etc. on the rocking sorting body 11 always has a constant thickness, the straw is not treated. Appropriate sorting work can be performed in which the upper surface is smoothly carried to the rear and discharged.

Further, in the case where the number of rotations of the Kara-mitsu fan 12 is linked to the conveying speed of the feed chain 24, the sorting air from the Kara-mitsu fan 12 is appropriate depending on the thickness of the processed material on the rocking sorting body 11. Since the amount of air blown is large, the cut straw or the like can be promptly discharged to the outside of the machine without being mixed with the first product, and the sorting performance can be improved.

[0028]

In summary, the present invention provides a feed chain that conveys mowing culms at a speed that is linked to the vehicle speed, performs threshing processing on the conveyed slaughtering culms at the threshing section, and selects threshed paddy. In a combine that is selected and separated by department,
The driving unit of the sorting operation member provided in the sorting unit is connected to the power transmission path of the feed chain, and the driving speed of the sorting operation member is configured to be linked to the feed speed of the feed chain.
In addition, since the oscillation frequency of the swing sorting body provided in the sorting unit is linked to the feed speed of the feed chain, and the rotation number of sorting fans provided in the sorting unit is linked to the feed speed of the feed chain, Since the conventional power transmission path of the feed chain can be used to drive the sorting operation member provided in the sorting section in an interlocking manner, the power transmission structure in the sorting section can be simplified and the production cost can be reduced. be able to.

Further, in the case where the oscillation frequency of the rocking sorting body is interlocked with the feed speed of the feed chain, the processed material on the rocking sorting body can always be kept at a predetermined thickness, and proper sorting work can be performed. it can.

Further, in the case where the number of rotations of the sorting fans is linked to the feed speed of the feed chain, an appropriate amount of air is blown according to the thickness of the object to be processed on the oscillating sorting body. It is possible to improve the sorting performance by minimizing the mixture with the material.

[Brief description of drawings]

FIG. 1 is a side view of a thresher.

FIG. 2 is a power transmission system diagram in which an oscillating sorting body is interlocked with a feeding speed of a feed chain.

FIG. 3 is a power transmission system diagram in which a Karano fan is linked to the feed speed of the feed chain.

[Explanation of symbols]

10 Sorting Department 11 Swing sorter 12 Karano Fan 24 Feed Chain 34 Power transmission path

Claims (3)

[Claims] 1. A combine harvester in which a feed chain for transporting mowing grain culms at a speed that is linked to a vehicle speed is provided, the transported mowing grain culms are threshed in a threshing unit, and the threshed rice is sorted and separated in a sorting unit. The combiner is characterized in that the drive unit of the sorting operation member provided in the selection unit is connected to the power transmission path of the feed chain so that the drive speed of the selection operation member is linked to the feed speed of the feed chain. Power transmission structure. 2. The power transmission structure for a combine according to claim 1, wherein the frequency of the oscillating sorting body provided in the sorting unit is linked to the feed speed of the feed chain. 3. The power transmission structure for a combine according to claim 1, wherein the number of rotations of the sorting fans provided in the sorting section is linked to the feed speed of the feed chain.