JPH0531524U - Cutting blade drive device of reaper - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention reduces wear of the cutting blade and improves sharpness, less accumulation of straw debris and mud on the reciprocating drive of the cutting blade, and scratching. An object of the present invention is to provide a cutting blade drive device for a reaping device in which the attitude of the reaping grain culm is not disturbed. [Structure] The upper and lower blades that make up the cutting blade are overlapped and held so as to slide laterally, and are linked to the reciprocating drive device so that they slide in opposite directions via knife heads. In a mowing device having a plurality of pairs of scraping members that are connected to each other and form a scraping path above the cutting blade, the scraping paths that are close to the center of the cutting blade and are adjacent to each other by bringing the knife heads close to each other. Cutting blade drive device of the reaping device arranged between the.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a driving device for a cutting blade in a cutting device for cutting grain culms.

[0002]

[Prior Art]

 Conventionally, in a mowing device having a plurality of scraping paths, an upper blade and a lower blade are laterally slidably overlapped and driven in opposite directions to each other. Was located on the side of the.

[0003]

[Problems to be solved by the device]

 Since the cutting blade driving device in the known cutting device reciprocally drives the cutting blade on the side, the cutting blade is often worn in the vicinity of the knife head and a gap is liable to be formed between the upper and lower blades. Performance has decreased. Also, when scraping the harvested culms, the root end of the harvested culms contacted the knife head, disturbing the scraping posture of the culms.

[0004]

[Means for Solving the Problems]

 According to the present invention, the upper blade and the lower blade that constitute the cutting blade are overlapped and held so as to slide laterally, and the reciprocating drive device slides in the opposite directions via the knife heads. In a mowing device having a plurality of pairs of scraping members that are interlocked and connected to each other and that form a scraping path above the cutting blade, the cutting heads are moved toward each other by moving the knife heads close to each other. The above-mentioned problem is solved by arranging it between the entrance paths.

[0005]

[Action]

 When the grain culm is weeded by the weeding body attached to the reaping device, the cutting blade cuts the base of the plant when the grain culm raising device raises the grain. At that time, the upper blade and the lower blade of the cutting blade are reciprocally driven in the opposite directions to each other by the reciprocating drive device via the respective knife heads in the vicinity of their central portions, and the grain culms are paired with each other through the sweeping paths. Since the knife head is scratched by the body and operates between the adjacent scraping paths, there is no obstacle to the movement of the root part of the scratched grain stem.

[0006]

【Example】

 The present invention will be described with reference to the 6-row combine harvester shown in the drawings. The harvester has a lateral frame 1 and seven lateral grass frames 2 ... The frame 1, the cutting blade 3 held at the lower part of the weeding frame 2 near the base, and the cutting blade 3 pivotally supported immediately above the cutting blade 3 on the left side when viewed from the front mesh with each other. Two pairs of scraping wheels 4, which are connected to each other on the right side with a narrow gap, and two pairs of scraping wheels 4, 4 which are meshed with each other and driven by one of the scraping wheels 4. , The four scraping paths formed between them, and at the rear of these scraping wheels, the stock-source transverse chain 5 that laterally feeds the stock-based part of the scraped grain culm. Is installed.

In addition to this, although not shown, like the conventional one, a grass body is attached to the front end of the grass frame 2 ... Formed on the front surface of the horizontal conveying device consisting of the stock source horizontal feed chain 5 from the front of the cutting blade 3 through the scraping wheels 4 and above, the medium horizontal feed chain with lugs stretched above it, and the upper horizontal feed chain. The sweeping belt with flexible lugs along both sides of the sweeping route and the spike side sweeping belt with tines, and the stock source sweeping chain on the outside of the sweeping route on both sides. And are stretched. In addition, between the transport end of the horizontal conveyor and the thresher, the merged harvested culm that was laterally conveyed is installed on the thresher installed on one side of the machine base while adjusting the handling depth. It is equipped with a grain culm transporting device to be supplied, and on the other side of the above machine stand, an operation panel, a driver's seat, a grain tank, an engine, etc. are provided.

The upper blade 3a and the lower blade 3b of the cutting blade 3 are laterally slidably overlapped with each other, and are located in a region near the center thereof corresponding to the second scraping wheel 4 from the left. The knife heads 6 and 7 are fixed to the left and right sides of the U-shaped bracket 8 screwed to the upper surface of the horizontal frame 1 behind them and the U-shaped bracket 9 welded to the lower surface. The bent portion of the L-shaped link 10 and the intersecting portion of the T-shaped link 11 are axially supported via the bearing 12 at the projecting portion of the link 10, and the link 10 and 11 are axially supported at the projecting portions thereof. The supported roller 13.13 is fitted between the plates 15 and 15 welded to both sides of the cutouts of the knife heads 6 and 7, and is not attached to the square hole 10a formed in the laterally protruding portion of the link 10. The roller 16 supported on the left end of the link 11 is fitted, and the right end of the link 11 is connected to the gear case. A crank pin 18 projecting from a ring 17 which is mounted on a shaft 19a projecting from the shaft 19 and forcibly driven is interlockingly connected via a rod 20. 21 is a blade presser.

Among the weeding frames 2, the one corresponding to the driving side of the link 11 is shown in FIG. 2 as shown in FIG. 3 up to a position where the base side is diagonally forward and close to the blade receiving base 22. The bent portion 2a that extends longer than that of the above and extends along the ground is lowered, the front portion 2b is superposed on the upper surface of the front end portion thereof, and the left and right connecting plates 23, 23 are welded to that portion to connect them. Therefore, even if the T-shaped link 11 is lowered, its driving portion side does not contact the grass frame 2.

When performing a mowing operation in the above-described mowing device, the grain culm raising body raises a napped grain culm with the vegetation body sown, and the crank pin 18 connects the right end of the right side link 11 via the rod 20. Since it is moved back and forth, the part projecting forward from it and the part projecting forward of the left side link 10 interlocking with it move the knife heads 6, 7 in the opposite direction, so that the knife heads 6, 7 The integrated upper blade 3a and lower blade 3b reciprocate in the opposite directions to mow the grain culm, and the mowing grain scraped backward from each scraping path by the scraping wheel 4 ... The culms are merged while being horizontally fed to the right by the traverse feeder, and the culms are conveyed while the handling depth is adjusted by the grain culm conveying device and supplied to the threshing device.

When the cutting blade 3 performs the cutting operation, both the upper blade 3a and the lower blade 3b are reciprocally driven at the intermediate portion, so that the upper blade 3a and the lower blade 3b are partially worn excessively and are not bent on the pushing side. The blade blades, such as the knife heads 6, 7, the links 10, 11 and the like, operate smoothly between the scraping paths and while being covered by the scraping wheel 4. Straws, mud and the like are rarely deposited on the cutting blade drive device, and the root end of the scraped grain culm does not disturb the culm posture by colliding with the cutting blade drive device. Further, in the part of the weeding frame 2 corresponding to the cutting blade driving mechanism, the bent part 2a on the base side is made lower at the part corresponding to the links 10 and 11, so that the link 11 can be accurately driven at a proper low position with respect to the knife heads 6 and 7.

[0012]

[Effect of the device]

 Since the present invention is constructed as described above, unlike the case where the cutting blade 3 is driven by the side portion, excessive wear does not occur in the vicinity of the driving portion, and the upper blade 3a floats up on the pushing side. Although the cutting action does not decrease, straw chips and mud are accumulated on the reciprocating drive device, and the root end of the scraped grain culm collided with the reciprocating drive device causes the culm posture. It is possible to prevent the disturbance.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a reaping device.

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

FIG. 3 is a transverse cross-sectional view of a portion corresponding to a cutting blade drive unit.

[Explanation of symbols]

 2 Weeding frame 3 Cutting blade 4 Scraping wheel 6 Knife head 7 Knife head 10 link 11 link

Claims (1)

[Scope of utility model registration request] 1. An upper blade 3a and a lower blade 3b constituting the cutting blade 3.
Are overlapped and held so as to slide laterally, and are linked to a reciprocating drive device so as to slide in opposite directions via knife heads 6 and 7, respectively, and the cutting blade 3
In a mowing device in which a plurality of pairs of scraping wheels 4 forming a scraping path are arranged above each other, the knife heads 6 and 7 are brought close to each other, and the scraping paths of the scraping paths which are close to the center of the cutting blade 3 and adjacent to each other are provided. A cutting blade drive device for a reaping device, which is arranged between the cutting blades.