JP3137606B2 - Cutting blade drive for mowing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving device for a cutting blade in a cutting device for cutting grain culms.

[0002]

2. Description of the Related Art Conventionally, in a reaper having a plurality of raking paths, an upper blade and a lower blade are overlapped with each other so as to be slidable laterally.
In a cutting blade driving device that drives them in opposite directions, the knife head is disposed on the side of the cutting blade.

[0003]

In the cutting blade driving device of the known cutting device, since the cutting blade is reciprocally driven at the side portions, the vicinity of the knife head of the cutting blade wears a lot, and the space between the upper and lower blades is increased. Gaps tended to form, which reduced the cutting performance. In addition, when the harvested culm was raked, the root end of the culled culm came into contact with the knife head, and the stalk raked posture was disturbed.

[0004]

The present invention SUMMARY OF THE INVENTION may, blade 3a and lower blade 3b on constituting the cutting blade 3, respectively held by polymerization to the horizontal slide, the power from the aircraft to the cutting blade portion Link 1 pivotally supported by a transmitting rod 20 and a shaft
A reciprocating drive device having the mag 0,11 with through knife head 6 and 7 respectively interlockingly connected to slide in opposite directions, above the cutting blade 3, two take-forming a pair
Squeeze wheel body 4 composed of spike wheels 4a, 4a '
Are arranged in the left-right direction, and each pair of two scraping wheels 4
a, 4a ',... in the reaper in which a scraping path is formed between the two knife heads 6, 7 interlocked with the reciprocating drive, are arranged close to each other. , 7, the width direction center side of the cutting blade 3, and two scraping rings 4a serving as the pair form between 4a '
The scraping path to be formed and two adjacent scrapes
Between the dropping wheels 4b and 4b '.
And the two sets of adjacent scraping wheels 4
The above-mentioned problem has been solved by arranging the parts at the positions corresponding to the respective scraping wheels 4a 'and 4b on the side of the side .

[0005]

When the culm is raised by the culm raising device, the cutting blade cuts the root portion of the culm and cuts off the culm. At this time, the upper blade and the lower blade of the cutting blade are reciprocally driven in opposite directions through the respective knife heads by the reciprocating drive device in the vicinity of the center in the width direction of the cutting blade to cut the culm, and the cut grain is cut. The culm is scraped into each scraping path by a pair of scraping bodies and transported to the back side. Therefore, excessive wear does not occur in the vicinity of the drive unit during mowing, and moreover,
At this time, since the reciprocating drive and the knife head are operated between the plurality of raking paths, there is no hindrance to the movement of the root portion of the stalks to be raked.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to a cutting device of a combine harvester of six-row cutting shown in the drawings. The cutting device comprises seven weeds spaced from the horizontal frame 1 in the horizontal direction. A cutting frame 3 held at a lower portion of the weeding frame 2 near the base thereof, and a left and right side supported by a shaft immediately above the cutting blade 3.
It consists of three sets of scraping wheels 4, etc.
And each of the squeezing wheels 4 is opposed to each other in pairs.
Two squeeze wheels, consisting of wheels, forming a pair on the left side when viewed from the front
4a, 4a ' are meshed with each other, and the two pairs of squeezing wheels 4 which are continuously provided at a narrow interval on the right side of each other have respective pairs.
The two scraping wheels 4b, 4b 'and 4c, 4c'
Meshed with each other, and each of the raking wheels 4a to 4c '
Drive one of the scraping wheels
Driven. Then, each pair of two scraping wheels 4a,
4a ', between two scraping wheels 4b, 4b', and two
A scraping path is formed between the scraping wheels 4c and 4c '.
At the rear of the scraping wheels 4a to 4c ' , a stock-raising chain 5 for transversely feeding the root portion of the stalks stalked is stretched.

In addition, although not shown, as in the case of the conventional one, a weeding body is attached to the front end of the weeding frame 2... , From the front of the cutting blade 3
Through the upper side, the stock feeder chain 5 and the middle traverse chain with a lug stretched over it and the traverse path formed on the front surface of the traverse transfer device composed of the upper traverse chain, and both sides of the scraping path , A rubbing belt with a flexible lug, a spike-side rubbing belt with tine, and a stock raking chain along the outside of the raking paths on both sides. In addition, between the transport end of the horizontal transport device and the threshing device, the harvested grain culm that has been transported and merged is supplied to a threshing device mounted on one side of the machine while adjusting the handling depth. A culm transport device is provided, and an operation panel, a driver's seat,
A grain tank and an engine are provided.

The upper blade 3a and the lower blade 3b of the cutting blade 3 are
And horizontal slidably polymerized respectively, in the portion corresponding from the left and two th scraping ring 4 a at those close to the center,
Each of the knife heads 6 and 7 is fixed, and a U-shaped receiving member 8 screwed onto the upper surface of the horizontal frame 1 behind the knife heads 6 and 7.
If, on the protruding portions of the left and right U-shaped socket member 9 welded to the lower surface, the L-shaped link 10 and the T-shaped link 11 via a Beari <br/> ring 12 journaled, the Rollers 13, 13, which are pivotally supported by the forwardly projecting portions of the links 10, fit between the plates 15, 15 welded on both sides of the notches of the knife heads 6, 7, and project laterally of the link 10. A roller 16 pivotally supported on the left end of the link 11 is fitted into a square hole 10a formed in the above-mentioned portion, and the right end of the link 11 is attached to a shaft 19a protruding from the gear case 19 and is forcibly driven. And a crank pin 18 protruding from a ring 17 to be connected. The reciprocating drive device composed of the rod 20 and the two links 10, 11 and the like is provided with a scraper formed between the two left scraping wheels 4a, 4a '.
Between the two scraping wheels 4b, 4b 'at the center.
And between the two sets
Scraping wheels 4a ', 4b on opposite sides of the abutting scraping wheel 4.
(That is, of the two scraping wheels 4a, 4a 'paired on the left side,
The right rake wheel 4a 'and two rake wheels 4 paired at the center.
b, 4b ' is disposed at a position corresponding to the left scraping wheel 4b) . Reference numeral 21 denotes a blade presser.

In the weeding frame 2 corresponding to the drive side of the link 11, the base portion is diagonally forward to a position close to the blade cradle 22, as shown in FIG. Folded portion 2a that extends longer than the object and extends along the ground
And the front portion 2b is overlapped on the upper surface of the front end portion, and the left and right connecting plates 23, 23 are welded to the front portion 2b. The side does not contact the weeding frame 2.

[0010] In the above-mentioned mowing apparatus, when mowing work is performed, the culm raising body raises the erected cereal culm which the weeder planted, and the crank pin 18 is connected to the right T-shaped link 11 via the rod 20. Since the right end is moved back and forth, the part protruding forward therefrom and the part protruding forward of the left L-shaped link 10 interlocking therewith cause the knife heads 6 and 7 to move left and right in opposite directions. The upper blade 3a and the lower blade 3b, which are integral with the knife heads 6, 7, reciprocate in opposite directions to mow the cereal stem, and the raking wheel 4a from each raking path.
4c ' and the harvested grain culm squeezed backward by the scraping belt and the like merge while being traversed to the right by the traversing device, and are conveyed while the handling depth is adjusted by the cereal culm conveying device. It is supplied to a threshing device.

When the cutting blade 3 performs the cutting operation,
Since both the upper blade 3a and the lower blade 3b are reciprocated at the widthwise intermediate portion of the body, they slide smoothly while being partially prevented from being appropriately worn and being deflected on the pushing side. 20, a reciprocating drive device comprising links 10, 11 and the like and knife heads 6, 7 are provided with two scraping wheels 4 on the left side.
a, a scraping path formed between 4a 'and two central scrapes
Between the wheels 4b, 4b 'and the scraping path formed between
The right side of the pair of rake wheels 4a and 4a 'that are paired on the left side
Two rake wheels 4b, 4 paired at the center with the rake wheel 4a '
b ' is operated in a state of being covered by the left scraping wheel 4b', so that there is little accumulation of straw chips, mud, etc. on the driving device of these cutting blades. The root end of the stock does not collide with the cutting blade driving device and disturb the culm posture. Further, in the grass weeding frame 2 which is located at a portion corresponding to the cutting blade drive device, the bent portion 2a on the base side is lowered at the portion corresponding to the links 10 and 11, so that the link 11 is connected to the knife. Driving can be accurately performed at an appropriate low position with respect to the heads 6 and 7.

[0012]

The present invention is constructed as described above.
Unlike the conventional one in which the cutting blade 3 is driven by the side, excessive wear does not occur near the driving portion, and the cutting action does not decrease due to the upper blade 3a floating on the pushing side. while, the reciprocating drive apparatus and both knife heads 6,7 such links 10 and 11, a pair of two scraping rings 4a,
4a 'and two adjacent pairs of scraping wheels 4 adjacent thereto.
b, 4b 'are arranged between the left and right scraping paths formed respectively.
Of the two sets of scraping wheels 4
Scraping ring 4a of each ', since operating at more covered state 4b, the Warakuzu or mud to drive these cutting blade are deposited, and Kakikoma are cutting lines original end of culms said It is also possible to prevent the culm posture from being disturbed by colliding with the reciprocating drive device.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of a reaper.

FIG. 2 is a plan view of a main part.

FIG. 3 is a cutaway view of a portion corresponding to a cutting blade drive unit.

[Explanation of symbols]

2 Grass weeding frame 3 Cutting blade 4 Scraping wheel 4a Scraping wheel 4a 'Scraping wheel 4b Scraping wheel 4b' Scraping wheel 4c Scraping wheel 4c 'Scraping wheel 6 Knife head 7 Knife head 10 Link 11 Link 20 rod

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A01D 34/30 A01D 34/13

Claims (1)

(57) [Claims] 1. An upper blade 3a and a lower blade 3b constituting a cutting blade 3.
To a reciprocating drive device comprising a rod 20 for transmitting power from the machine body to the cutting blade portion and links 10 and 11 rotatably supported by a shaft. The knife blades 6 and 7 are operatively connected to each other so as to slide in opposite directions to each other.
, Two paired scraping wheels 4a, 4a '...
A plurality of sets of scraping wheel bodies 4
In the reaper in which a rake path is formed between each pair of two rake wheels 4a, 4a ',..., The two knife heads 6, 7 interlocked with the reciprocating drive are provided. The reciprocating drive and both knife heads 6, 7
And the said width direction center side of the cutting blade 3, and the pair
A scraping path formed between the two scraping wheels 4a, 4a ';
Adjacent to this, between two pairs of scraping wheels 4b, 4b '
Between the scraping path to be formed and such two sets
Each of the scraping wheels 4 on the opposite side of the adjacent scraping wheel 4
A cutting blade driving device for a cutting device, wherein the cutting blade driving device is disposed at a position corresponding to a ', 4b .