JP2002238332A - Reaping unit for combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reaping unit for a combine harvester simplified in transmission construction to diminish troubles, and easy to find such a trouble in case of its occurrence. SOLUTION: This reaping unit for a combine harvester has a construction and mechanism characterized by that star wheels 2 and 3 for raking in reaped grain culms are disposed behind and above a cutting blade 1 of reciprocating form and mechanical power is transmitted from the lower end of the wheel shaft 4 of the star wheel 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvester.

[0002]

2. Description of the Related Art In a multi-row type combine, the transmission between a reciprocating cutting blade and a star wheel of a reaper is performed by branching from a middle part of a transmission system provided in a reaping frame. .

[0003]

If the power transmission system of the cutting blade and the power transmission system of the star wheel are of a long path that branches off in the middle,
When only one of the transmission systems is in the transmission state, even if there is a transmission stop or a failure in the other side of the transmission system, it is difficult for the driver to recognize the transmission and a failure may occur. Further, the configuration is complicated and the weight is increased.

[0004]

According to the first aspect of the present invention, star foils 2 and 3 for scraping a harvested grain culm are disposed above and behind a reciprocating cutting blade 1, and the foil of the star wheel 2 is provided. The cutting blade 1 is transmitted from the lower end of the shaft 4 to constitute a combine harvester.

According to a second aspect of the present invention, the wheel shaft 4
A cutting blade transmission case 6 inside a transmission mechanism 5 for interlocking the cutting blade 1 from the lower end of the cutting wheel 1 is disposed between the upper star wheel 2 and the lower cutting blade 1. The invention according to claim 3 is characterized in that the cutting blade 1, the star wheel 2,
3, and a pair of left and right cutting blade devices 7L and 7R including a cutting blade transmission case 6 and the like connected between them are arranged in a symmetrical left and right form.

According to a fourth aspect of the present invention, a horizontal rear frame 10 is provided at a front end of a main frame 9 which is supported to be able to move up and down with respect to a vehicle body 8, and the cutting blades 1 are provided at left and right lateral ends of the rear frame 10. Is connected to a front frame 11 supporting the rear frame 10, and an integral support arm 12
And the outer wheel shaft 4 is supported.

[0007]

According to the first aspect of the present invention, by rotating the wheel shaft 4, the star wheel 2 on the wheel shaft 4 is rotated to perform the scraping action of the cut grain culm.
The cutting blade 1 is transmitted from the lower end of the wheel shaft 4 to cut the culm. For this reason, the transmission configuration as the reciprocating cutting blade 1 can be shortened and simplified, the cutting device can be reduced in weight, and the transport resistance of the cutting grain culm can be reduced. Moreover,
Even if any part of the cutting blade 1 or the star wheel 2 or 3 is clogged and becomes overloaded or damaged, these transmission systems are integrated as normal transmission and abnormal transmission, The transmission state can be easily monitored, and safe transmission can be performed.

According to a second aspect of the present invention, a star wheel 2 is provided.
The reciprocating cutting blade 1 is disposed above and below the cutting blade transmission case 6 at the lower end of the wheel shaft 4 and is interlocked with the cutting blade transmission case 6. Are balanced, and vibration due to transmission can be reduced.

According to a third aspect of the present invention, the left cutting blade device 7L and the right cutting blade device 7R over the cutting width have the star wheels 2, 3 and the cutting blade transmission case 6 and the like. Since the cutting blades 1 are arranged symmetrically, the overall configuration can be simplified in spite of the dual configuration in which the cutting blades 1 are arranged side by side, and the transmission can be balanced by canceling out the left and right sides to provide a vibration-proof configuration. The center of the harvested grain culm opposite to the side where the cutting blade transmission case 6 is located can be raked and fed to the side, so that the transport resistance can be reduced.

According to the fourth aspect of the present invention, the reciprocating cutting blade 1 is supported and mounted on the front frame 11 and is interlocked with the outer wheel shaft 4. Since the star wheels 2, 3 and the cutting blade 1 can be driven stably because they are supported by the upper support arm 12, and since the support arm 12 is located on both the left and right outer sides of the cutting width, the center is provided. It is possible to adopt a configuration that does not interfere with the grain stalks that are scraped and fed to the part.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be embodied as a multi-cutting combine harvester. A schematic configuration of the combine will be described with reference to the drawings. The rear part of the main frame 9 of the reaper 14 is supported on the upper part of the transmission case 15 of the vehicle body 8 that can travel with the crawler 13, and can be moved up and down by expansion and contraction of the lift cylinder 16. A threshing device 17 is mounted at the rear of the mowing device 14, and the grain culm conveyed by the cereal culm conveying device 18 of the mowing device 14 is transferred between the feed chain 19 and the clamping rod 20 and conveyed rearward. Then, threshing is performed in the threshing room 21.

[0012] Beside the threshing device 17, a control device 2 is provided.
2, a cabin 24 covering the driver's seat 23, an engine, a Glen tank 25, and the like. The grains extracted by threshing and sorting by the threshing device 17 are stored in a Glen tank 25 and can be discharged from a threshing port 28 by a threshing auger 26 and a swivel auger 27 arranged at the rear.

The reaper 14 includes a main frame 9,
At the front end, a horizontal rear frame 10 is integrated with the front end, and the front side is equilibrated and attached via left and right side frames 29.
A reaping frame is configured. This front frame 11
The weeding frame 31 having the weeding plate 30 is arranged, and the cutting blade 1 is attached over the rear part of each weeding frame 31. Star wheels 2 and 3 are arranged at the rear upper part of the cutting blade 1, and a chain 33 of the scraping lug 32 is arranged from the star wheels 2 and 3 part to a lower front part, and a collecting chain 34 and 35 are provided. At the rear of the collecting chain 34 on one side, a conveying device 18 is provided which has a cereal stem clamping rod 36 and conveys the collected culm to the feed chain 19 of the threshing device 17.

A transport lug chain 37 for transporting the spike side is provided above the collecting and transporting chains 34, 35 and the like. Further, the transport lug chain 37, the scraping lug 32 and the like extend from the lower front to the upper rear. Moving device 38 that causes grain culm
Place. 39 is a guide rod attached to the front of the weeding rod, 4
Numeral 0 denotes a weeding rod, and 41 denotes a weeding guide provided on the outside.

Here, the invention described in claim 1 is
Star wheels 2 and 3 for scraping the harvested grain culm are arranged above and behind the reciprocating cutting blade 1, and the cutting blade 1 is transmitted from the lower end of the wheel shaft 4 of the star wheel 2. The combine harvester is configured.

Thus, by rotating the wheel shaft 4, the star wheel 2 on the wheel shaft 4 is rotated to perform the scraping action of the harvested grain culm, and the cutting blade is cut from the lower end of the wheel shaft 4. 1 is transmitted so that the culm can be harvested. For this reason, the transmission configuration as the reciprocating cutting blade 1 can be shortened and simplified, the cutting device can be reduced in weight, and the transport resistance of the cutting grain culm can be reduced. In addition, even if any part of the cutting blade 1 or the star wheel 2 or 3 is clogged and becomes overloaded or damaged,
The transmission system can easily monitor the transmission state as normal transmission and abnormal transmission as a single unit, and can perform safe transmission.

According to a second aspect of the present invention, the wheel shaft 4
A cutting blade transmission case 6 inside a transmission mechanism 5 for interlocking the cutting blade 1 from the lower end of the cutting wheel 1 is disposed between the upper star wheel 2 and the lower cutting blade 1. Thus, the star wheel 2 and the reciprocating cutting blade 1 are arranged above and below the cutting blade transmission case 6 at the lower end of the wheel shaft 4 and are interlocked with each other. On the other hand, the upper and lower transmission configurations are balanced, so that vibration due to transmission can be reduced.

According to a third aspect of the present invention, a pair of left and right cutting blade devices 7L and 7R including the cutting blade 1, the star wheels 2 and 3, and the cutting blade transmission case 6 connecting the cutting blades to each other are provided. It is characterized by being arranged in a symmetrical form. As a result, the left cutting blade device 7L and the right cutting blade device 7R over the cutting width are arranged symmetrically with the star wheels 2, 3 and the cutting blade transmission case 6, and so on. Blade 1
Despite being a two-way configuration in which left and right are arranged side by side, the overall configuration can be simplified, the transmission can be balanced by canceling out the left and right sides, and a vibration-proof configuration can be achieved. The central portion opposite to the side on which it is located can be raked and fed to the side, and the transport resistance can be reduced.

Further, in the invention according to a fourth aspect, a lateral rear frame 10 is provided at the front end of a main frame 9 which is supported to be able to move up and down with respect to the vehicle body 8.
Frame 11 supporting the cutting blade 1 at the left and right lateral ends of the
And the outer wheel shaft 4 is supported on the upper portion of the rear frame 10 by an integral support arm 12.

As a result, the reciprocating cutting blade 1 is supported and attached to the front frame 11 and is interlocked with the outer wheel shaft 4, but the wheel shaft 4 is supported by the support arm 12 above the rear frame 10. Because of this support, the star wheels 2, 3 and the cutting blade 1 can be driven stably. In addition, since the support arms 12 are located on both left and right outer sides of the cutting width, the support arms 12 are scraped to the central portion. It is possible to adopt a configuration that does not easily interfere with the grain culm.

Here, the main frame 9 and the rear frame 10 are formed in a substantially T-shape in plan view, and the side frames 2 attached to both left and right ends of the rear frame 10 are provided.
9 and the front frame 11 are also formed in a substantially T shape.
In the front frame 11, the central portion 42 is slightly deviated to the front side, and both left and right end portions are connected via the weeding frame 31.

The cutting blade 1 comprises a lower fixed blade 43 and an upper movable blade 44, and is constituted as a pair of left and right cutting blade devices 7L and 7R over the cutting width. A bracket 45 is provided on the lower side of each weeding frame 31 in front of the front frame 11, and the inner end is approached near the weeding frame 31 at the center. In the movable blade 44, each outer driving piece 46 is swung right and left by the rotation of the crankshaft 47. The movable blades 44 are driven symmetrically to maintain the anti-vibration effect by canceling the inertial force of the left and right cutting blade devices 7L and 7R.

The star wheel 2 is provided with each of the cutting blade devices 7L, 7
The star wheel 3 is provided on the outer side upper side of the R and on the inner side upper side. Wheel shaft 4 of outer star wheel 2
The upper part is supported by the cutting blade transmission case 6 part and the support arm 12 part, and the transmission mechanism part 4 in the lower side frame 29 is mounted.
Transmission rotation from the 8 side. The cutting blade transmission case 6 is fixed to the front frame 11, and the support arm 12 is attached to the upper part of a transmission frame 49 erected on both ends of the rear frame 10. A star wheel 2 is attached to the wheel shaft 4 between the cutting blade transmission case 6 and the support arm 12, and a sprocket 50 that bridges the front ends of the collecting chains 34 and 35 on the upper side of the support arm 12. A pulley 51 for hanging the scraping lug 32 belt 33 is attached.

The cutting blade transmission case 6 includes a gear transmission mechanism 5
Is provided, and the rotation of the wheel shaft 4 causes the outer crankshaft 4 to rotate.
7 can be transmitted. For this reason, when the transmission shaft in the main frame 9 is transmitted from the output portion on the vehicle body 8 side, the left and right wheel shafts 4 are rotated via the transmission shafts in the rear frame 10 and the side frames 29, and furthermore, this wheel The crankshaft 47 is driven from the shaft 4 via the gear transmission mechanism 5. Thereby, the star wheel 2 on the wheel shaft 4
In addition, the collection chain 34, the scraping lug 32, and the like are driven, and the left and right movable blades 44 are driven.

The upper end of the moving device 38 is supported by a moving frame 52 extending between the upper ends of a transmission frame 49 at both ends of the rear frame 10.
And each moving device 38 via a transmission shaft in the moving frame 52.
It can transmit the moving lag.

During the mowing operation, the culm guided between the respective weeds 30 by the forward movement of the machine is lifted up by the moving device 38 to be brought into a fixed posture. And the root portion is cut by the left and right cutting blade devices 7L and 7R. The cut culm is raked between the left and right side stawls 2 and 3 and collected and sent to the collection chains 34 and 35 on the rear side. At this time, the inner star wheel 3 is rotated by direct engagement with the outer star wheel 2. Accordingly, the scraping lug 32 integrally linked with the inner star wheel 3 is also rotated. Collection chain 3
The grain culm collected between 4, 35 is conveyed and supplied to the threshing device 17 at the rear.

The rear end of the weeding guide 41 is located above the front end of the narrow guide 53 on the lateral side of the vehicle body 8. When the mowing device 7 is moved up and down by the expansion and contraction of the lift cylinder 16, the weeding guide 41 is moved up and down at a position above the narrow guide 53. Further, the narrow guide 53 is
Although the lateral movement of the weeding guide 41 is adjusted by the side 4 with respect to the vehicle body 8, the weeding guide 41 is always positioned above the narrow guide 53, so that interference is less.

Adjacent cereal stems that have been weeded outside the weeding board 30 at the lateral end are weeded outward by the weeding guide 41 and guided outside the narrow guide 53 on the rear side. This weeding guide 4
Even if it comes off from 1 and the ear part falls down inside, it is received by the lower narrow guide 53,
There is little disturbance of weeding guidance to the outside.

[Brief description of the drawings]

FIG. 1 is a partial side view and a front view of a threshing unit.

FIG. 2 is a plan view thereof.

FIG. 3 is a side view of the reaper unit.

FIG. 4 is a plan view of a part thereof.

FIG. 5 is a side view of the combine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutting blade 2 Star wheel 3 Star wheel 4 Wheel shaft 5 Transmission mechanism 6 Cutting blade transmission case 7L, 7R Cutting blade device 8 Body 9 Main frame 10 Rear frame 11 Front frame 12 Support arm

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B076 AA03 BA03 CA09 CA10 CA19 DA06 2B081 AA01 CC53 EB01 EB16 2B382 GA03 GA09 GC03 GC04 GC15 GC22 GC23 GD01 HA02 HA05 HA12 HB02 HC03 HD03 HF02 HG03 HH03 HH06 HH09 HH14

Claims (4)

[Claims] 1. A star wheel 2 or 3 for scraping a harvested grain stem is disposed above and behind a reciprocating cutting blade 1, and the cutting blade 1 is transmitted from a lower end of a wheel shaft 4 of the star wheel 2. A harvester for combine harvesters, characterized in that: 2. A cutting blade transmission case 6 inside a transmission mechanism 5 for interlocking the cutting blade 1 from the lower end of the wheel shaft 4 is disposed between the upper star wheel 2 and the lower cutting blade 1. The combine harvester according to claim 1, wherein: 3. A pair of left and right cutting blade devices 7L and 7R including the cutting blade 1, the star wheels 2 and 3, and a cutting blade transmission case 6 connecting between them are arranged in a left-right symmetric form. The combine harvester according to claim 1 or 2, 4. A horizontal rear frame 10 is provided at a front end of a main frame 9 which is supported to be able to move up and down with respect to a vehicle body 8, and a front frame 11 which supports the cutting blade 1 is provided at left and right lateral ends of the rear frame 10. The combine harvester according to claim 1, 2 or 3, wherein the outer wheel shaft (4) is connected to the upper part of the rear frame (10) and supported by an integral support arm (12) on the upper part of the rear frame (10).