JPS6121950Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to an improved form of the pawl for a flail mower.

Technical background of the invention and its problems A flail mower is generally used for cutting weeds and shredding wheat stalks, leftover vegetables, etc. so that they do not interfere with subsequent work.

However, when performing the above-mentioned cutting operation with a flail mower, if the ground is uneven or there are tree branches that have been pruned, such as in an orchard, the cutting blade of the claw will wear out quickly and become dull, resulting in poor durability. There are also problems with sexuality.

Purpose of the invention The purpose of the invention is to increase the strength of the reaping blade and to form it into a form that can prevent the sharpness from deteriorating by ensuring that the reaping blade is always sharpened even when it wears out.

Summary of the invention The present invention involves bending a toe portion of a predetermined length following the mounting plate-shaped portion, forming a curved toe portion outward from the middle portion in the width direction, and forming both sides of the toe portion in the width direction. It is characterized by having a reaping blade formed on it.

Embodiment of the invention An embodiment of the invention will be described below as shown in the accompanying drawings.

Reference numeral 1 denotes a rotating shaft rotatably suspended horizontally on the frame of the flail mower, and this rotating shaft 1 is connected and driven by a power source of the flail mower. Further, a pair of mounting plates 2 are provided on the circumferential side in the axial direction of the rotating shaft 1 so as to protrude from each other at a predetermined interval, and mounting holes 3 are provided at opposing positions of each of the mounting plates 2. It is perforated.

Reference numeral 4 designates claws for the flail mower, and these claws 4 are inserted into a pair between each of the mounting plates 2 with their mounting plate-shaped parts 5 overlapped, and inserted into the mounting holes 3 of the mounting plate 2. It is fixed with bolts 6 and nuts 7.

The claw 4 has an insertion hole 8 formed in a mounting plate-like part 5 through which the bolt 6 is inserted, and a claw part 9 of a predetermined length that is connected to the mounting plate-like part 5 at a 90-degree angle.
The bent portion 10 is bent at a predetermined angle larger than the tip of the toe portion 9, and is curved outward from the middle portion in the width direction from the bent portion 10 to the tip of the toe portion 9, and a bulge bulges outward in the length direction of the middle portion. A projecting portion 11 is formed, and as a result, tapered cutting blades 12 are formed on both side edges facing inward in the width direction. 3A is a sectional view of the mounting plate-like portion 5, FIG. 3B is a sectional view of the bent portion 10, and FIG.
As is clear from this cross-sectional shape, the toe portion 9 is formed in such a manner that the bulging portion 11 thereof gradually protrudes outward as it reaches the tip. Therefore, the cutting blades 12 on both side edges are formed gradually inward.

Then, as shown in FIG. 1, the two pawls 4 overlap the mounting plate portions 5 with their toe portions 9 facing outward, and are attached to each of the mounting plates 2 of the rotating shaft 1. has been done.

With this configuration, the rotating shaft 1 is driven, and the pawls 4 protruding radially from the circumferential side in the axial direction of the rotating shaft 1 are rotated, and the toe portion 9 of each pawl 4 is rotated. Reaping blade 1 on the front edge side in the rotation direction
2, weeds, wheat sticks, etc. are harvested from near the ground surface.

In this case, since the toe portion 9 has a bulging portion 11 that is curved outward in the direction of rotation, when the toe portion 9 is rotated, it is possible to smoothly handle the weeds and wheat sticks to be cut, and the weeds and wheat sticks can be cut smoothly. It is rare that the rod is attached. In addition, the claws 4 or partial claws 4 in each set are interchanged left and right, and the reaping blades 12 on the rear edge side in the rotation direction are placed on the front edge side in the rotation direction, so that the reaping blades 12 on both sides can be used effectively for reaping work. It can be performed. Further, since the toe portion 9 is curved with a bulge portion 11 formed in the middle portion, the overall strength is increased and there is no risk of breakage compared to a plate-shaped one.

Next, FIGS. 4A, 4B, and 4C show cross-sectional views of the same portions of the claw 4 of another embodiment as those of the above embodiment, in which the mounting plate-like portion 20 and the claw portion 21 are connected together. A protrusion 23 is formed which is curved in a mountain shape from the middle part in the width direction outward from the tip of the toe part 21, and projects outward in the length direction of the middle part.

By configuring it in this way, the same effect as that of the above embodiment can be achieved.

Furthermore, FIGS. 5A, 5B, and 5C show cross-sectional views of the same portions of the claw 4 of still another embodiment as those of the above embodiment, in which the mounting plate-like portion 30 and the claw tip portion 31 are connected and folded. From the curved portion 32 to the tip of the toe portion 31, an arcuate protrusion 33 is formed which is curved outward from the middle portion in the width direction in an arc shape and protrudes in the length direction of the middle portion.

By configuring it in this way, the same effect as that of the above embodiment can be achieved.

Effects of the invention According to the invention, a toe portion of a predetermined length is bent following the mounting plate-shaped portion, and this toe portion is curved outward from the middle portion in the width direction, so that the toe portion is Compared to plate-shaped products, the strength is greatly increased, so there is no risk of breakage, and since the curved part is formed outward, weeds and other materials to be cut are less likely to stick to them compared to plate-shaped products. In addition, the cutting resistance is low, and since the reaping blades are formed on both edges in the width direction of the toe, even if the reaping blades are worn out, they will not become rounded to the point where their sharpness is impaired. There is no need to keep the cutting blade in place, so there is no need to wear out the cutting edge and reduce the sharpness.Also, since the cutting blade is formed on both sides of the blade in the width direction, it can be easily removed by changing the direction in which the claw is attached. It is possible to effectively use both blades, and therefore it is possible to provide a claw for a flail mower with excellent workability.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a part of the flail mower with the pawl attached, Fig. 2 is a perspective view of the above pawl, Fig. 3 A, B, and C are sectional views of various parts of the same pawl, and Fig. 4 A, B , C and FIGS. 5A, 5B, and 5C are cross-sectional views of various parts of the claw of another embodiment. 4...Claw, 5, 20, 30...Mounting plate-like part, 8
...Mounting hole, 9, 21, 31...Toe part, 11...
...Bulge, 12... Reaping blade, 23... Projection, 33
...Arc-shaped ridge.

Claims (1)

[Claims for Utility Model Registration] (1) Following the mounting plate-shaped portion, a toe portion of a predetermined length is bent, and this toe portion is curved outward from the middle portion in the width direction, and the width thereof is A claw for a flail mower characterized by having cutting blades formed on both edges in the direction. (2) The claw for a flail mower as set forth in claim 1 of the utility model registration claim, wherein the mounting plate-shaped portion has a mounting hole.