JP2534341Y2 - Balance weight in reciprocating type cutting blade device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to a balance weight in a reciprocating type cutting blade device attached to a harvester such as a combine or a binder.

[Problems to be Solved by the Related Art and the Invention] Generally, in this seeding blade device, a so-called reciprocating type device in which a movable blade reciprocates in a left-right direction with respect to a fixed blade fixed to a machine body side is employed. Often. By the way, in such a cutting blade device, if only the movable blade reciprocates in the left-right direction by itself, there is a problem that the pre-processing unit is swung right and left by the reaction force.

Therefore, it has been attempted to provide a balance weight so as to move in the left and right direction opposite to the movable blade. However, the conventional balance weight has a power transmission to the cutting blade as shown in Japanese Utility Model Laid-Open No. 59-186029. Therefore, there is a problem that the left-right balance of the pre-processing unit is impaired, and sufficient balance correction cannot be performed.

[Means for Solving the Problems] The present invention has been made in view of the above-described circumstances, and has been created for the purpose of providing a balance weight in a reciprocating type cutting blade device capable of eliminating these disadvantages, In a reciprocating type cutting blade device configured by reciprocating a movable blade in a left-right direction with respect to a fixed blade fixed to a pretreatment unit side, a swing link to which a knife head for reciprocating the movable blade in a left-right direction is connected. A base end portion of a long balance weight which is disposed on one of the left and right sides of the pre-processing portion and opposite to a portion where the knife head is connected with the swing support shaft of the swing link interposed therebetween, and extends over substantially the entire width of the cutting blade device. The balance weight is moved in the direction opposite to the movable blade in the left-right direction to secure the balance, and the leading end of the balance weight is linked to the other side in the left-right direction of the pre-processing unit. It is characterized by being connected via a mechanism.

According to the present invention, with this configuration, the cutting performance of the reciprocating type cutting blade device can be greatly improved.

Next, an embodiment of the present invention will be described with reference to the drawings.
In the drawings, reference numeral 1 denotes a combine, and a pre-processing unit 2 of the combine 1 is provided with a cutting blade device 3 according to the present invention. That is, the cutting blade device 3 is composed of a fixed blade 4 and a movable blade 5, and the fixed blade 4 is fixed to a blade receiving plate 7 integrally fixed to the preprocessing unit frame 6, and has an upper surface. The movable blade 5 is slidably provided in the left and right direction. The blade holder 8 for pressing the movable blade 5 has a rear edge portion which corresponds to a rear edge portion of the fixed blade 4. The movable blade 5 is integrally fixed by bolts 9 for fixing the movable blade 5 to the front edge side so as to be slidable in the left-right direction.

Reference numeral 10 denotes a knife head. The knife head 10 extends in the left-right direction, and its distal end (inside the machine) is integrally fixed to the movable blade 5, and its proximal end (outside the machine) is bent upward in a stepped manner. However, the base end portion overlaps above the blade presser 8 which is located on the most cut side of the blade presser 8, and has a guide groove 10 formed by cutting out the front edge side.
a is disposed at a position substantially above the holding portion 8a.

Reference numeral 11 denotes a swing link having a substantially triangular shape. The swing link 11 swings around a support shaft 11a,
The connecting pin 11b provided on the first top is the guide groove 10a.
Oscillating link 11 and knife head 10
And are linked. The tip of a drive arm 12 interlockingly connected via a crank arm 13b to a drive shaft 13a housed in a transmission case 13 is pivotally connected to the second top of the swing link 11, and By the forward and backward movement of the drive arm 12 based on the rotational drive of the shaft 13a, the swing link 11 swings so that the first apex moves in the left-right direction with the support shaft 11a as a fulcrum. The blade 5 reciprocates left and right.

Further, the third top of the swing link 11 is located on the opposite side of the second top via the support shaft 11a, but the third top has
The base end of a rod-shaped balance weight 14 long in the left-right direction is connected so as to substantially match the left-right width of the pre-processing unit, but the other end of the balance weight 14 is connected to the unprocessed ground-side pre-processing unit frame. 6 is pivotally connected via a link 15, and is disposed at a position sandwiched by the pre-processing transmission case 13 and the cutting blade device 3 back and forth. In addition, the end of the balance weight 14 on the side connected to the oscillating link 11 is located at a slightly higher position (the height position between the movable blade 5 and the oscillating link 11), but most of the remaining portion is It is arranged so as to be hidden behind the cutting blade device 3 so that the root end and the stump end of the stem and stalk that has been cut by the cutting blade device are prevented from coming into contact with the balance weight 14. The balance weight 14 moves left and right in a direction opposite to the left and right movement of the movable blade 5, whereby the balance of the pre-processing unit is ensured.

In the embodiment of the present invention configured as described above, the cutting of the stem culm to be planted in the field is performed by the left and right reciprocating movement of the movable blade 5 based on the swinging motion of the swinging link 11. However, in this case, the balance weight 14 reciprocates in the left-right direction opposite to the movable blade 5 to cancel the movement reaction force of the movable blade 5, so that the pre-processing unit 2 fluctuates unstable left and right. This can reliably reduce inconveniences.

As described above, in the embodiment in which the present invention is implemented, the pre-processing unit 2 is stabilized by the balance weight 14, but the balance weight 14 is long in the left-right direction, and is substantially left and right of the cutting blade device 3. Since it extends over the entire width, the stabilizing effect of the pre-processing unit 2 is excellent. The long balance weight 14 is connected to the pre-processing unit via a link mechanism on the distal end side (uncutted side) as well as on the base end side (cutted side). Movable blade 5
The movement in the left and right direction, which is inconsistent with
When the balance in the preprocessing section comes out,
The stabilization of the mowing performance can be measured.

In addition, the long balance weight 14 is provided in the space between the cutting blade device 3 and the pre-processing transmission case 13 between the front and rear.
Most of the stalks are arranged just behind the back of the cutting blade device 3, so that the root end of the stalk culm or the tip of the stump can be prevented from contacting the balance weight 14, and the stalk culm is disturbed. Or an unnecessary load acting on the balance weight 14 is prevented.

On the other hand, the side end of the balance weight 14 connected to the swing link 11 on the cut ground side has a height between the movable blade 5 and the swing link 11 disposed above the movable blade 5. In addition, since it is configured to be protected by these members, there is almost no trouble.

Note that the present invention is not limited to the above embodiment, and the balance weight 14 is used as a power transmission medium for the movable blade 5 and the movable blade 5 is In addition, the movable blade 5 may be moved to the left and right even from the uncut ground side so as to improve the smooth movement of the movable blade 5.

[Effects] In summary, the present invention is configured as described above, and therefore the stabilization of the pre-processing unit is achieved by the balance weight moving in the left-right direction opposite to the movable blade. Since the balance weight is long in the left-right direction and extends over substantially the entire length of the cutting blade device, the stabilizing effect of the pretreatment section is excellent.

In addition, since the long balance weight is connected to the pre-processing unit side via a link mechanism at the distal end similarly to the base end side, the horizontal movement opposite to the movable blade of the balance weight is smoothly performed. Naturally, the balance in the pre-processing section can be ensured, and the stabilization of the mowing performance can be measured.

[Brief description of the drawings]

The drawings show an embodiment of the balance weight in the reciprocating type cutting blade device according to the present invention, FIG. 1 is a schematic perspective view of a combine, FIG. 2 is a plan view of the cutting blade device,
FIG. 3 is a side sectional view of the cutting blade device, FIG. 4 is a front view of the balance weight portion, and FIG. 5 is a plan view of a main portion of the cutting blade device showing the second embodiment. In the figure, 2 is a pre-processing unit, 3 is a cutting blade device, 4 is a fixed blade, 5 is a movable blade, 8 is a blade holder, 8a is a holder, 10 is a knife head,
11 is a swing link.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeaki Maeda 667 Iida-cho, Oaza-ku, Higashiizumo-cho, Yatsuka-gun, Shimane Prefecture Inside Mitsubishi Agricultural Machinery Co., Ltd. (56) References Japanese Utility Model No. 3-85818 (JP, U) Kaisho 61-201523 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A reciprocating type cutting blade device comprising a movable blade reciprocating in a left-right direction with respect to a fixed blade fixed to a pre-processing unit, a knife head for reciprocating the movable blade in a left-right direction is connected. The swing link is disposed on one of the right and left sides of the pre-processing unit, and a long balance extending over substantially the entire left and right width of the cutting blade device is provided at a portion opposite to the knife head connecting portion sandwiching the swing support shaft of the swing link. By connecting the base end of the weight, the balance weight is moved in the direction opposite to the movable blade in the left and right direction to secure the balance, and the distal end of the balance weight is connected to the other side in the left and right direction of the preprocessing unit. A balance weight in a reciprocating type cutting blade device, wherein the balance weight is connected to a reciprocating blade device via a link mechanism.