JPS605777Y2 - Cutting blade structure of reaping machine - Google Patents

Description

[Detailed description of the invention] This invention relates to the structure of the cutting blade of a reaping harvester.

Generally, in reaping and binding machines, reaping and threshing machines, etc., a reaping blade is used that cuts two husks that stand up in a field by rubbing two blades together.

As shown in Figs. 1 and 2, the structure is such that the receiving blade 1 and the cutting blade 2 are overlapped, and the cutting blade guide 3 is placed at an appropriate location.
The cutting blade 2 is guided and regulated by means such as the cutting blade 1, and the cutting blade part 4, which is fixed to the receiving blade 1, is pressed against the cutting blade 2 with an appropriate force.

On the other hand, a handle piece 6 is connected to the cutting blade 2, a pin 7 is fixed to this, a metal 8, etc. is interposed therebetween, and one end of a crank arm 9 is fitted to this.

Then, the mowing blade 2 is caused to slide relative to the receiver blade 1 by the swinging motion of the crank arm.

In addition, in FIGS. 3 and 4, the cutting blade 2' is a divided body, and the connecting body 10 is passed on the back side of the cutting blade 2', and this is also connected to the groove (or hole) shaped in the receiving blade 1'. ) 11 to use it as a guide.

However, these devices have a complicated structure, have a large number of parts, and are complicated to adjust.

Furthermore, there were other drawbacks such as dirt getting into the space between the receiving blade and the cutting blade, reducing cutting performance.

Therefore, this invention provides a cutting blade structure that corrects the above-mentioned drawbacks with an inexpensive and simple structure.

A specific example of this invention will be described below with reference to the drawings.

First, an elongated hole 12 is formed through the body of the blade part of the receiving blade 1, which has no irregularities along its length, and then the elongated hole 12 is fitted along the side edge of the elongated hole 12 at the normal overlapping position. Both parts of the cutting blade 2 to be cut are bent downward, and a vertically penetrating hollow part 14 is formed between them.
shall be.

This bent portion 13.13' is constructed by fitting into the elongated hole.

Of course, the elongated hole 12 needs to be long enough so that the bent portion 13, 13' of the cutting blade 2 does not come into contact with it during its stroke.

The other configurations of the blade part 4, handle piece 6, etc. are the same as before.

This device with the above-mentioned structure can also serve as a double-edged guide and regulation means, and when cutting up an upright culm in the field, the mud caught in the cutting blade can be removed from the hollow part. Since it can be easily removed due to its presence, it can be expected to have excellent effects such as preventing mud from getting caught between the two blades and reducing the cutting function.

In addition, the present invention has the bending portions 13, 13' of the cutting blade 2 connected to the receiving blade 1.
Since the cutting blade is fitted into the elongated hole 12, the movement of the cutting blade can be surely regulated, and therefore, the cutting of the culm can be facilitated.

Furthermore, since the cutting blade 2 is provided with a hollow part 14,
Even if mud is pressed against the blade, the pressure of the mud will be avoided because it passes through the hollow part.

Therefore, it is possible to prevent mud from entering between the cutting blade 2 and the receiving blade 1.

Furthermore, due to the existence of the elongated hole 12, the hole and the hollow portion 14
This makes it easier to lubricate and improve the lubrication effect.

Furthermore, although the above description has been made with respect to an example of a cutting blade having an integral structure, even a cutting blade having a split body can be easily implemented by using a commonly used connecting means.

[Brief explanation of the drawing]

1 to 4 are plan views showing a conventional cutting blade structure. 5 is a plan view showing the cutting blade structure according to this invention, and FIG. 6 is a sectional view taken along line AA' in FIG. 5. (Sign), 1...Receiving blade, 2...Mowing blade,
12...Elongated hole of receiving blade, 13,13'...
- Bent part of the cutting blade, 14...Hollow part of the cutting blade.

Claims (1)

[Scope of utility model registration request] In the cutting blade structure of a harvester that overlaps the receiving blade 1 and the cutting blade 2 and slides one of them to reap the culm, the receiving blade 1
An elongated hole 12 is suitably provided along the longitudinal direction of the cutting blade 2, and a vertically penetrating hollow portion 1 is provided at a location corresponding to the elongated hole 12 of the cutting blade 2.
4, and bent portions 13.13' are provided at appropriate locations along the longitudinal edge of the hollow portion 14, and the bent portions 13.13' can be slid into the elongated holes 12 of the receiving blade 1. The cutting blade structure is characterized by being fitted into the blade.