JPH0424898Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement in the structure of the cutting blade of a reaper.

(Prior art) Conventionally, when increasing the running speed of a reaper, the reciprocating speed of the cutting blade is also increased, but if the speed is too high, the vibration of the cutting blade becomes intense. There was a problem that the blade became longer and the vibration became more intense. In order to solve this problem, a structure has been proposed in which the cutting blade 6' is divided into left and right halves, as shown in Fig. 4, and is moved back and forth on the receiving blade 2' so as to cancel out the vibrations. I've reached it.

However, with such a structure, as shown in the figure,
There has been a problem in that foreign matter A such as soil and straw that has entered between the cutting blades places an unreasonable load on the cutting blades, resulting in poor cutting.

In addition, in Japanese Utility Model Application Publication No. 60-31658, in order to prevent foreign matter A such as straw from entering between the cutting blades, the front part of the receiving blade body at the center of the receiving blade is set in front of the cutting blade. A structure is disclosed in which the width of the receiving blade body is made to protrude to a length corresponding to the cutting width.

However, this cannot completely prevent foreign objects such as cuttings from entering between the pair of cutting blades, so if a foreign object gets caught between the pair of cutting blades, it will cause strain on the cutting blades. There is a problem with the load being applied.

(Problems to be Solved by the Invention) The present invention has been made in view of the above points, and its purpose is to be able to remove foreign matter by using the reciprocating motion of a pair of cutting blades. It is an object of the present invention to provide a cutting blade structure for a reaper that can solve the above problems without complicating the structure.

(Means for Solving the Problem) The gist of the present invention is that a large number of receiving blade bodies 1 are arranged in a row on the left and right to constitute a receiving blade 2, while a triangular blade body portion 4 extends forward from a base 3. Extend the cutting blade body 5
At the same time, a large number of cutting blade bodies 5 are arranged on the left and right to form a cutting blade 6, which moves back and forth on the receiving blade 2.
The sliding cutting blade 6 is divided into left and right halves, and as the pair of cutting blades 6 reciprocate, the inner sides of each cutting blade 6 are moved closer to each other and separated from each other at the center of the receiving blade 2. Center receiving blade body 1a of blade 2
A cutting blade of a reaper in which a front part 9 projects forward from the cutting blade 6, and the horizontal width of the receiving blade element 1a is approximately the same as the width of each of the inner cutting blade elements 1 in a close state. In the structure, a pair of cutting blades 6
Of the opposing edges of each cutting blade body located inside the
A blade 7 is also provided on the edge of the base 3 in continuity with the blade 8 of the blade body 4.
This relates to a cutting blade structure of a reaper formed by forming a reaper.

(Example) Hereinafter, the present invention will be described in detail based on the illustrated example.

The receiving blade 2 is constructed by attaching a large number of receiving blade bodies 1 to a knife bar 10 and arranging them in rows on the left and right. The cutting blade 6 is constructed by fixing a large number of cutting blade bodies 5 to a receiving blade stand and arranging them on the left and right. The cutting blade body 5 is formed by extending a triangular blade portion 4 forward from the base portion 3.
It has blades 8 on both the left and right sides. The cutting blade 6 reciprocates from side to side on the receiving blade 2 while sliding on the receiving blade 2 by a driving means (not shown).

The cutting blade 6 is divided into left and right halves, and as the pair of cutting blades 6 reciprocate, the cutting blade body 5a located inside each cutting blade 6 at the center of the receiving blade 2 is moved close to and separated from each other. There is. Among the opposing edges of each cutting blade body 5, a blade 7 is also formed at the edge of the base 3 so as to be continuous with the blade 8 of the blade body portion 4. In this way, foreign matter that tries to penetrate deep from the cutting blade body 5a can be cut and removed by the blade 7 of the cutting blade body 5a.

On the other hand, the central receiving blade element 1a of the receiving blade 2 is formed larger than the other receiving blade elements 1a. That is, the front part 9 of the receiving blade element 1a is made to protrude further forward than the cutting blade 6, and the horizontal width of the receiving blade element 1a is set to be approximately the same as the width of each of the inner cutting blade elements 1a in the close state. be. Therefore, the gap between the blade parts 4 of the opposing cutting blade bodies 5a is
Therefore, foreign matter that tries to enter between the cutting blades 6 from the front can be swept away by the receiving blade body 1a.

Incidentally, if a triangular cut-off part 11 as shown in FIG. 3 is also provided on the edge of the knife bar 10,
Foreign matter can be extruded more effectively.

(Effects) As described above, the present invention forms a blade at the edge of the base part, which is continuous with the blade of the blade body, among the opposing edges of each cutting blade body located at the opposing parts of a pair of cutting blades. Therefore, the base of the cutting blade body can also be provided with a cutting function, making it possible to cut or push upward to remove straw or the like that has penetrated deep into the space between the cutting blades.

As a result, there is an effect that the mowing operation can be performed smoothly without any unreasonable load being applied to the cutting blade due to foreign objects. Furthermore, since such foreign matter can be removed by reciprocating the cutting blade, the structure does not become complicated.

[Brief explanation of the drawing]

Fig. 1 is a partial plan view of an embodiment of the present invention, Fig. 2 is a sectional view taken along line XX in Fig. 1, Fig. 3 is a sectional view of another embodiment of the invention, and Fig. 4 a and b are FIG. 2 is a plan view illustrating the operation of a conventional example. 1, 1a... Uke blade body, 2... Uke blade, 3...
... Base, 4... Blade body, 5, 5a... Cutting blade element, 6... Cutting blade, 7... Base blade, 8... Blade of blade body, 9... Front.

Claims (1)

[Scope of utility model registration request] A large number of receiving blade elements are arranged on the left and right to form a receiving blade, while a triangular blade body extends forward from the base to form a cutting blade element, and a large number of cutting blade elements are arranged side by side to form a receiving blade. are lined up on the left and right to form the cutting blade, and the cutting blade that reciprocates and slides on the receiving blade is divided into two on the left and right.
As these pair of cutting blades reciprocate, the inner sides of each cutting blade are brought closer and separated at the center of the receiving blade, and the front part of the receiving blade body at the center of the receiving blade is moved from the cutting blade. Along with protruding forward,
In a cutting blade structure of a reaper in which the horizontal width of the receiving blade element is approximately the same as the width of each of the inner cutting blade elements in the close state, each of the cutting blade elements located inside the pair of cutting blades is A cutting blade structure for a reaper, characterized in that a blade is also formed at the base edge of the opposing edge, continuous with the blade of the blade body.