JPS5915865Y2 - Mower blade cover mounting structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a structure for attaching a cutting blade cover in which a cutting blade cover covering an upper part of the cutting blade is disposed such that its tip is close to the upper surface of the cutting blade.

When installing a cutting blade cover to cover the top of the cutting blade as described above, it is important not to create a relatively large gap between the tip and the top surface of the cutting blade where straw waste, mud, etc. can enter.
Furthermore, in order to avoid abrasion of the tip of the cover and the top surface of the cutting blade due to sliding of the cutting blade, it is desirable to form a gap as small as possible within a range where the two do not come into contact with each other.

However, in the past, the cutting blade cover was simply positioned by connecting and supporting the cutting blade cover to the fixed machine frame at its upper end, so the gap may become larger or smaller due to assembly errors. As a result, an appropriate gap could not be obtained.

In view of these points, the present invention makes effective use of the knife clip present at the mower blade cover installation location, and uses the stay attached to the fixed machine frame as a fixing device, thereby ensuring an appropriate gap. The purpose is to allow easy and accurate positioning of the tip of the cover.

The structure of the reaping cover installation according to the present invention is that the mower cover that covers the upper part of the mower blade is disposed so that its tip is close to the upper surface of the mower blade, and one end of this mower cover is attached to the fixed machine frame. At the same time, the other end is notched at a portion corresponding to the knife clip extending from the rotating machine frame, and a tongue piece that comes into contact with the upper surface of the knife clip is provided inside the notch. It is characterized in that it is bent and positioned by abutting the tongue piece against the upper surface of the knife clip.

That is, according to the present invention, the tip (other end) of the cover is cut out, the cutout part is fitted onto the knife clip, and the tongue piece provided inside the cutout is connected to the knife clip. This is to control the position of the tip of the cover, so that the cover can be held in the left and right direction by the engagement between the notch and the knife clip, and in the vertical direction by the engagement between the tongue piece and the knife inside the notch. It is extremely easy and quick to control the position by making contact with the top surface of the clip, and to secure a minute gap between the tip and the top surface of the cutting blade.Therefore, installing the cover is a simple task. easy,
It can be done quickly.

In addition, even though only one end of the cover is fixed, the other end is in contact with the knife clip, so the cover as a whole is supported on both sides, and the cover does not dangle even when the aircraft vibrates. This has the advantage that it can be held stably without vibration.

Furthermore, since the bent tongue piece provided inside the notch at the tip of the cover is brought into contact with the knife clip to set a minute gap between the cover and the upper surface of the cutting blade, the degree of bending of the tongue piece can be finely adjusted. This has an advantage in that it is possible to absorb manufacturing errors of the cover and installation errors to some extent, and to accurately set the minute gap.

Furthermore, since the knife clip present at the location where the cutting blade cover is disposed can be effectively used as a positioning tool, no special positioning tool is required, and the structure is simplified and the purpose can be achieved.

Next, an embodiment of the present invention will be explained based on the drawings. A clipper-type reaping device used in a combine harvester is shown.
The three grass support rods 6 are arranged in parallel in the horizontal direction.
It is mounted on a fixed machine frame 1 which is fixedly mounted on the fixed machine frame 1, and this fixed machine frame 1 has an elastic structure that moves the top surface of the cutting blade 2 toward the receiving blade 5 side at three locations spaced apart in the sliding direction of the cutting blade. A knife clip 4 to be pressed against the blade 5 is attached, and also slides in sliding contact with the rear side of the knife par 7 connected to the lower surface of the cutting blade 2 and the rear side of the receiving blade 5. Cutting blade 2 with the rear side of
Three sliding plates 8 are installed at intervals in the sliding direction.

Further, in this clipper type reaping device, a cutting blade cover 3 that covers the upper part of the cutting blade 2 is attached so that its tip 3A is close to the upper surface of the cutting blade 2.

The mower blade cover 3 is installed by connecting and supporting the upper end of the mower blade cover 3 to a stay 1a connected to a portion of the fixed machine frame 1 located behind the mower blade 2. In addition, a portion of the cover tip 3A corresponding to the knife clip 4 is cut out, and a tongue piece 3a is provided which contacts the top surface of the knife clip 4 while continuing to the notch edge.
... are punched out from the cutting blade cover 3, and these tongue pieces 3a
By contacting the upper surface of the knife clip 4,
The cover tip 3A is positioned with respect to the upper surface of the cutting blade 2.

Reference numeral 9 denotes a knife head that engages with a crankshaft (not shown) and moves the cutting blade 2 back and forth as the crankshaft rotates.

In addition, sloped surfaces 7a are formed at both ends of the knife cover 7 to scoop up the upper surface of the fixed machine frame 1 as it slides.

[Brief explanation of the drawing]

The drawings show an example of the structure of the cutting blade cover attachment according to the present invention, in which Fig. 1 is a partially cutaway plan view of the reaping device in a combine harvester, Fig. 2 is an enlarged vertical sectional side view of the main part, and Fig. 3 is an enlarged longitudinal sectional side view of the main part. FIG. 3 is an enlarged longitudinal sectional front view of the main part. 1... Fixed machine frame, 1a... Stay, 2
...Mowing blade, 3...Mowing blade force, bar, 3A
...Tip, 4...Knife clip,
3a... tongue piece.

Claims (1)

[Scope of utility model registration request] When the cutting blade cover 3 that covers the upper part of the cutting blade 2 is disposed so that its tip 3A is close to the top surface of the cutting blade 2, one end of the cutting blade cover 3 is attached to the fixed machine frame 1. A tongue piece 3a is fixed to the stay 1a, the other end is notched at a portion corresponding to the knife clip 4 extending from the fixing machine frame 1, and the tongue piece 3a contacts the upper surface of the knife clip 4 inside the notch.
The cutting blade cover mounting structure is characterized in that the tongue piece 3a is bent and positioned by contacting the upper surface of the knife clip 4.