JPH06153646A - Clipper type reaping apparatus for agriculture - Google Patents

Abstract

PURPOSE:To prevent floating up of a movable blade and local contact of a pressing member with a knife bar provided nearly over whole width on the upper face side of the movable blade in a clipper type reaping apparatus for agriculture, providing the movable blade on the upper surface side of a fixed blade so as to be able to freely drive, reciprocate and slide and providing a pressing member for pressing the movable blade to the fixed blade and slidably bringing the end surface of the knife bar into contact with the rear end face of the pressing member. CONSTITUTION:A pressing member 5 pressing a movable blade 4 to a fixing blade 2 and simultaneously bringing into contact with the front end face of a knife bar 3 provided over whole width of the movable blade 4 is formed in a length bringing into contact with the movable blade 4 nearly over whole width.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural clipper-type mowing device used in a mowing and harvesting machine such as a combine harvester.
Agricultural clipper type reaping device.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, a movable blade 11 is provided on the upper surface side of a fixed blade 13 so as to be reciprocally slidable, and a pressing member 12 for pressing the movable blade 11 against the fixed blade 13 is provided.
There is known an agricultural clipper-type reaping device in which the front end surface of a knife bar 14 attached to the upper surface side of the movable blade 11 over substantially the entire width is brought into slidable contact with the rear end surface of the pressing member 12, and a wide movable blade 11 is provided. On the other hand, a plurality of narrow pressing members 12 are made to act, the movable blades 11 are pressed against the fixed blade 13 by the cooperation of the plurality of pressing members 12, and the front end face of the long knife bar 14 is slidably guided. [See, for example, Japanese Utility Model Laid-Open No. 2-44926].

[0003]

However, due to the floating of the movable blade in the portion of the movable blade where the pressing member does not act, a gap is created between the fixed blade and the movable blade, resulting in deterioration of sharpness and clogging of stem stems. There is a risk that the knife bar will wear locally due to sliding contact with the pressing member,
There is a risk of rattling of the movable blade, and there was room for improvement in terms of cutting performance and durability. The purpose of the present invention is to
It is to prevent the movable blade from being lifted up and the pressing member and the knife bar from hitting each other easily and surely, and to maintain good sharpness for a long period of time.

[0004]

A feature of the present invention is that a movable blade is provided on the upper surface side of a fixed blade so as to be reciprocally slidable, and a pressing member for pressing the movable blade against the fixed blade is provided. In the agricultural clipper type mowing device in which the front end face of the knife bar attached over almost the entire width is brought into slidable contact with the rear end face of the holding member, the holding member is formed to have a length that makes contact with the movable blade over almost the entire width. .

[0005]

In other words, since the movable blade is pressed over almost the entire width by a single long pressing member, the movable blade can be easily and reliably prevented from rising, and the sharpness of the movable blade is deteriorated due to the floating, and the stalks between the fixed blade and the movable blade can be prevented. Trouble caused by clogging can be reliably prevented. Also, since the front end face of the long knife bar is slidably guided by the rear end face of one long pressing member, it is possible to easily and reliably prevent the movable blade from rattling due to local abrasion of the knife bar, and to maintain good sharpness for a long time. it can.

[0006]

As a result, it is possible to provide an agricultural clipper-type reaping device which is capable of preventing floating of the movable blade and rattling and reliably maintaining good sharpness for a long period of time, and which is further excellent in cutting performance and durability. It was

[0007]

EXAMPLE As shown in FIGS. 1 to 3, in constructing an agricultural clipper-type cutting device for use in a harvesting and harvesting machine for combine harvesters, binders, etc., a large number of blades are riveted and fixed to a receiving base 1. The blade 2 is configured, and a large number of blades are riveted to the knife bar 3 to configure two sets of left and right movable blades 4,
The movable blade 4 is reciprocally slidably arranged on the upper surface side of the fixed blade 2,
Left and right pressing members 5 for individually pressing the movable blades 4 against the fixed blades 2 are fixed to the receiving base 1 via a pair of mounting members 6, respectively, and a knife bar 3 attached to the upper surface side of the movable blades 4 over substantially the entire width. The front end face is slidably contacted with the rear end face of the pressing member 5, and the rear end face of the knife bar 3 is slidably contacted with a slide plate 7 fixed to the cutting blade base 1, so that the movable blades 4 each have almost the entire width. Each of the pressing members 5 is formed to have a length in contact with each other, and the movable blades 4 are interlocked with the left and right crank mechanisms 8, respectively. By being driven, the generation of drive vibration can be suppressed.
The sliding plate 7 is made of a plate material integrally formed with a standing piece 7a that slidably contacts the rear end surface of the knife bar 3 and a receiving piece 7b that supports the rear portion of the movable blade 4 from below. That is, while the movable blade 4 is positioned by the fixed blade 2, the pressing member 5, and the slide plate 7, the movable blade 4 is configured to be slidably driven reciprocally with respect to the fixed blade 2, and One pressing member 5 that is long over almost the entire width
To prevent the sharpness of the movable blade 4 from rising and the trouble caused by clogging of the stalks in the gap between the fixed blade 2 and the movable blade 4. The front end face of the knife bar 3 is slidably guided to suppress local wear of the knife bar 3.

The present invention may be applied to a general form of a cutting device in which one set of movable blades 4 is provided for one set of fixed blades 2. The mounting structure of the pressing member 5 and the sliding guide structure for preventing the movable blade 4 from moving rearward can be appropriately selected from known ones.

Further, although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is an overall plan view of a reaping device.

FIG. 2 is an enlarged plan view of a main part of the reaping device.

FIG. 3 is a sectional view taken along line AA of FIG.

FIG. 4 is a plan view of a conventional example.

[Explanation of symbols]

 2 Fixed blade 3 Knife bar 4 Movable blade 5 Holding member

Claims (1)

[Claims] 1. A movable blade (4) is provided on the upper surface side of the fixed blade (2) so as to be reciprocally slidable, and a pressing member (5) for pressing the movable blade (4) against the fixed blade (2) is provided. An agricultural clipper-type reaping device, wherein a front end surface of a knife bar (3) provided on the upper surface side of the movable blade (4) over substantially the entire width is slidably brought into contact with a rear end surface of the pressing member (5), An agricultural clipper-type mowing device, wherein the pressing member (5) is formed in such a length that it contacts the movable blade (4) over almost the entire width.