JPH062509Y2 - Blade holder for reaper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a blade pressing metal fitting for a mowing device used for a combine or the like.

(Prior Art) A harvesting device such as a combine harvester, as shown in FIG.
Lateral direction (longitudinal direction) in close contact with the fixed lower blade A
The upper blade B is disposed so as to slide on the lower blade A and the lower blade A and the upper blade B.
It is configured such that rice or the like is sandwiched between the sawtooth-shaped blade portions formed between them and (cut).

Therefore, in order to smoothly mow, it is required that there is no play between the lower blade A and the upper blade B when sliding in the lateral direction.

For this reason, in the structure of an initial mowing device (not shown), when the sliding surfaces of the lower blade and the upper blade are worn, a gap is created between them, and mowing cannot be performed smoothly.

In view of such inconvenience, there has been provided a blade holding metal fitting for a cutting device which constantly presses the upper blade B against the lower blade A as shown in FIG. That is, this blade pressing metal fitting is
21 is bent into a substantially U shape, one U-shaped extension portion 22 is attached to the lower blade A side, and the other extension portion 23 is abutted to the upper blade B side, The parts 22 and 23 are sandwiched by bolts 24 so that the spring force acts in a direction in which the spring force is narrowed.
Were configured to be close to each other.

(Problems to be solved by the invention) However, in the blade pressing fitting having the above-described configuration, since the post (spring steel), which is difficult to press, is bent into a substantially U shape as described above, , Bending or cracking may occur at the bent part. In addition, since it is necessary to press into a substantially U-shape with a partially narrowed opening, a plurality of manufacturing (pressing) steps using a special jig are forced. Therefore, the blade pressing member having the above structure has a problem in terms of manufacturing efficiency.

Further, when using (when adjusting the pressing force), the above-mentioned U
In the case of a V-shaped blade pressing fitting, due to the positional relationship between the force point p, the action point f, and the support point s as shown in FIG. 8, a considerable stress ( P) works. That is, in terms of the arrangement, since 1 cannot be set large with respect to the distance L, a considerable stress (P = F.L / l) acts on the adjusting bolt 24 during the above adjustment. As a result, there has been a problem that a large force is required for adjustment and a bolt having a large diameter must be used, resulting in a large external shape.

The present invention has been made in view of the above situation, and an object thereof is to provide a blade pressing fitting that does not have the above-mentioned problems.

(Means for Solving the Problem) The present invention is directed to a harvesting device such as a combine that presses and supports a movable blade so that it can freely slide in a lateral direction with respect to a fixed blade fixed to a receiving base. In the blade pressing member, the fixed portion of the blade pressing member is divided by forming a slit in the moving blade pressing portion side direction, and the mounting portion of the moving blade pressing force adjusting bolt is formed on at least one of the divided portions. Then, the other side of the movable blade pressing force adjusting bolt position from the moving blade pressing portion side to form a blade receiving base fixing portion to be fixed to the receiving blade side, the receiving blade fixing portion It is characterized in that a movable blade pressing portion is provided on the side opposite to the fixed portion side of the blade pressing fitting.

(Action) Then, the blade pressing fitting configured in this way is
As shown in the figure, the positional relationship between the force point p, the action point f, and the support point s means that the force point and the action point are arranged via the support point, so that the overall external dimension (L + 1) is the same as that described above. If the structure is the same as that of the conventional structure, the length l can be increased with respect to the distance L as compared with the conventional structure, and as a result, the force P (= F.L /
l) can be reduced.

That is, a large pressing force F can be obtained with a smaller force P than that of the conventional structure. Further, in terms of shape (structural), it is simpler (not narrower on the opening side) than conventional blade pressing fittings, so simple upper and lower dies can be used for simple pressing. .

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a blade pressing metal fitting of the cutting device according to the present embodiment, FIG. 2 is a view taken along the line II of FIG. 1, FIG. 3 is a view taken along the line II-II of FIG. FIG. 4 is a plan view of the blade pressing metal fitting with the upper blade and the lower blade attached, and FIG. 5 is II of FIG.
It is an I-III arrow line view.

In the figure, 1 is a fixed part of a blade pressing metal fitting of a reaper,
The fixed portion 1 is provided with a slit 2 in a direction toward the upper blade pressing portion 7 side. An attachment portion 3 for a moving blade pressing force adjusting bolt 17 (see FIGS. 4 and 5) is provided on the central piece 1A which is divided into three by the slit 2, and is divided into three. Each of the pieces 1B and 1C on both sides is provided with a blade holder fixing portion 4 for fixing to a blade holder (see FIGS. 4 and 5).

In addition, as shown in FIG. 3, the piece portion 1A provided with the attachment portion 3 is extended in a substantially flat state with the central portion 5 of the blade pressing metal fitting in a side view. Each piece formed on the other hand and provided with the above-mentioned blade holder fixing portion 4
1B and 1C are bent obliquely downward from the central portion 5 of the blade pressing member and then again in the opposite direction in the middle, and are attached at a position lower than the attaching portion 3 at the end side. The flat portions 1b and 1c are formed so as to be substantially parallel to the portions.

A through hole 3a is formed in the attaching portion 3 of the movable blade pressing force adjusting bolt 17, and a nut 6 is fixed to the lower surface of the attaching hole 3a so that the hole 3a and the hole 6a coincide with each other. Through-holes 18 for fixing to the blade holder are formed in the plane portions 1b and 1c of 1B and 1C.

By the way, the upper blade (moving blade) pressing portion 7 of the blade pressing metal member has a plane bent to the fixed portion side (lower side in FIGS. 1 and 3) 1 at a right angle to the direction orthogonal to the slit 2 and the tip. Substantially L-shaped (or inverted L-shaped) slits 8 (see FIGS. 1 and 3) are provided on both sides. As shown in FIG. 3, the central piece 7A divided by the slit 8 is bent obliquely downward (approximately 45 ° in the case of the present embodiment) in the middle, and is located at the lower end side. It is bent in the opposite direction so as to form a flat surface 7a that contacts the upper blade B (see FIG. 3).

Further, as shown in FIG. 2, both side ends of the flat surface 7a are bent slightly upward so as not to be caught when the upper blade slides in the lateral direction.

On the other hand, both side portions 7B, 7C divided by the slit 8
Is approximately 90 ° downward at the same position as the middle part of the piece 7A.
Is bent at an angle of.

The convex portion 9 provided on the central piece 1A divided into three by the slit 2 is for increasing the rigidity (second moment of area) of this portion.

Then, the blade pressing fitting configured as described above operates as follows.

First, when used as a harvesting device for a combine, etc., as shown in FIGS. 4 and 5, the lower blade A is attached on the receiving base 10 and is slidable laterally above it. Place the upper blade B having the guide bar 11 on the upper part. And the upper blade B
And, the blade pressing metal fittings C are attached to the lower blade A at several positions in the lateral direction (the arrow X direction in FIG. 4), and the upper blade B is pressed toward the lower blade A side.

That is, as shown in FIG. 5, the attachment of the blade pressing member C is carried out via the lower blade A, the upper blade B and the spacers 12, 13, 14 corresponding to the blade thickness of the guide bar 11, This is done by attaching the blade pedestal fixing part 4 of the blade pressing metal fitting to the pedestal pedestal 10 with the countersunk screw 15 and the nut 16.

Then, the movable blade pressing force adjusting bolt 17 is screwed to the mounting portion 3 of the blade pressing metal fitting in the state where the blade pressing metal fitting is mounted on the receiving table 10.

Then, when the upper blade B is pressed toward the lower blade A side, the moving blade pressing force adjusting bolt 17 is screwed in and the tip thereof is brought into contact with the blade holder 10, so that the fixing portion of the blade pressing metal fitting is fixed. 1 side is pushed up according to the screwing degree,
The upper blade pressing portion 7 side is lowered downward, and the flat portion 7a presses the upper blade B downward from above.

The pieces 7B and 7C bent downward on both sides of the upper blade pressing portion 7 of the blade pressing metal fitting together with the spacer 14 guide the lateral sliding of the guide bar 11 of the upper blade B from both sides. (See Fig. 5).

It should be noted that although no description has been made on the material of the blade holding metal fittings in the above-mentioned embodiment, the material may be a conventional blade, or other metal as long as it has a spring force (strong elastic force). Alternatively, it may be plastic or the like.

(Effect of the Invention) As described above, the blade pressing fitting according to the present invention makes the upper blade (moving blade) strongly move to the lower blade (fixed blade) side by applying a smaller force than the conventional structure. Since the movable blade pressing force adjusting bolt can be pressed and brought into close contact with each other, the moving blade pressing force adjusting bolt can have a small diameter and can be adjusted with a small force. Therefore, even a weak person such as a woman or an old person can easily adjust the pressing force.

Also, in terms of shape (structurally), it is much easier to construct than a conventional blade holder (it has a planar configuration where the opening is not narrowed), so press work is very easy. As a result, the manufacturing can be rationalized, and since there is no unreasonable bending (generally U-shaped bending) as in the conventional case, there will be no breakage or crack in the manufacturing process.

[Brief description of drawings]

FIG. 1 is a plan view of a blade pressing metal fitting of the cutting device according to the present embodiment, FIG. 2 is a view taken along the line II of FIG. 1, and FIG. 3 is a view taken along the line II-11 of FIG. FIG. 4 is a plan view of the blade pressing metal fitting with the upper blade and the lower blade attached, and FIG. 5 is II of FIG.
I-III arrow view, FIG. 6 is a side sectional view showing the structure of the conventional blade pressing member, and FIGS. 7 and 8 show the mechanical action and effect of the present invention and the conventional blade pressing member. The model figure shown. 1 ... fixed part, 1A ... (one) piece, 1B, 1C ... other piece,
2 ... Slit, 3 ... Mounting part for adjusting moving blade pressing force, 4 ... Blade holder fixing part, 7 ... Upper blade (moving blade) pressing part.

Claims (1)

[Scope of utility model registration request] 1. A blade holding metal fitting for a harvesting device such as a combine that presses and supports a movable blade in a state of being in close contact with a fixed blade fixed to a receiving base so as to be slidable in a lateral direction. Dividing by inserting a slit in the fixed part of the metal fitting in the moving blade pressing part side direction, forming an attaching part of the moving blade pressing force adjusting bolt on at least one of the divided parts, and forming the attaching part on the other part. A blade holder fixing portion that is fixed to the receiving blade side is formed at a position closer to the moving blade pressing portion than the moving blade pressing force adjusting bolt position, and a fixing portion of the blade pressing metal fitting is separated by the receiving blade fixing portion. The moving blade pressing portion is provided on the side opposite to the side.