JPH0662633A - Reaping blade driving apparatus of harvester - Google Patents

Abstract

PURPOSE:To prevent the vibration of a reaping blade by smoothing the transfer of the driving force to the reaping blade. CONSTITUTION:The harvester has a clipper-type reaping apparatus to reciprocate a reaping blade 1. A roller 4 pivoted to the tip end of a crank lever 3 having a shaft extending in longitudinal direction is engaged with a guiding member 7 laterally swinging fanwise around a supporting rotary shaft 6 positioned above or below the reaping blade 1. The rotational motion of the roller 4 around the shaft of the crank lever 3 is converted to a fanwise oscillation with the guide member 7 to reciprocate the reaping blade 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving device for a cutting blade in a harvester having a clipper-type cutting section for cutting a planted grain culm by reciprocating the cutting blade in a lateral direction.

[0002]

2. Description of the Related Art Conventionally, in a harvester having a hair clipper-type cutting unit, a rotary motion is reciprocally converted into a linear reciprocating motion to reciprocate a cutting blade. Therefore, component forces in various directions which are unnecessary for linear reciprocating motion at the time of conversion of rotational movement are transmitted to the cutting blade, and smooth conversion cannot be expected, causing vibration of the entire cutting section.

[0003]

As described above, since the driving of the cutting blade in the conventional harvester is to convert the rotary motion into a linear reciprocating motion at once, the cutting blade can smoothly reciprocate. The present invention solves these problems by interposing a fan-shaped oscillating motion between the rotary motion and the linear reciprocating motion because the vibration cannot be transmitted and causes the vibration of the mowing part. The object of the invention was the invention.

[0004]

In order to achieve the above-mentioned object, the present invention is a hair clipper type in which a cutting blade is reciprocated, and is attached to the tip of a crank lever having a longitudinal axis. The roller to rotate around the axis of the crank lever as a center by engaging with a guide body that oscillates in the left-right direction around a rotary fulcrum shaft located above or below the cutting blade. The cutting blade is reciprocated by the guide body that converts the motion into a fan-like swing.

[0005]

With this structure, the roller pivotally mounted on the tip of the crank lever rotates about the axis of the crank lever, and the rotation of the roller causes the guide body to swing in a fan shape about the pivot axis. The cutting blade then transmits a linear reciprocating motion from the oscillating motion, and the rotary motion of the roller is once converted into a fan-shaped oscillating motion. Since it is converted into motion, the cutting blade is driven smoothly.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cutting blade driving device according to the present invention will be described below with reference to the drawings. Since the harvester having this driving device is a combine, its outline is described with reference to FIG. (8) is the left and right black
The vehicle undercarriage supported by LA (9), (A) is
A threshing unit equipped with a dorsian (10) on the left side, a handling barrel (11), etc., and a straw chain (12), which is mounted on the left side of the traveling chassis (8), and (13) is a control unit.・
(14) is a grain tank, (E) is an engine part which incorporates an engine (15), and these control parts (13),
The grain tank (14) and the engine section (E) are sequentially arranged on the right side of the traveling chassis (8) from the front side.

(B) is a dividing plate (16) / raising device (1
7) The cutting blade (1) and the cutting unit provided with a transfer mechanism (18) for transferring the cut culms to the threshing unit (A), and (19) is a grain tank (from the rear side of the engine unit (E)). 14) A discharge ogre that lifts up and removes the grains stored inside, and a straw cutter (C) is provided at the rear side of the straw chain (12).

The grain culm cut by the cutting blade (1) is supplied to the threshing section (A) by the transport mechanism (18) and is sandwiched and transferred by the feed chain (10) while the handling barrel (1
1) etc. threshing process, the processed grain comes to be lifted and stored in the grain tank (14),
Also, the straw culms that have undergone threshing are inherited by the straw chain (12), carried out rearward, cut into a predetermined length by the straw cutter (C), and the grain stored in the grain tank (14) is appropriately stored. It can be taken out of the machine by a discharge auger (19).

Further, to the reaping unit (B), a rotary shaft for moving the reaping unit (B) up and down by a hydraulic device (20) is used as an input shaft (21) from an engine (15) via a tension clutch. Input the power of the main case (2
It is distributed to a raising device (17), a hair clipper type cutting blade device for laterally reciprocating the cutting blade (1), a transport mechanism (18) and the like from a drive shaft incorporated in 2).

Next, referring to FIG. 1 and FIG. 2, the main part of the present invention will be described. (5) is the main case (2)
A drive case provided in the transmission path from the drive shaft in 2) to the cutting blade device, and (2) is a crank rotatably supported by the drive case (5), the axial center of which is the front-back direction. The crank lever (3) is orthogonal to the front-rear direction. And
Reference numeral (23) is a shaft projecting forward from the tip of the crank lever (3), and a roller (4) composed of a ball bearing is mounted on the shaft (23).

Reference numeral (7) is a guide body having a U-shaped cross section, which is fan-movable in the left-right direction about the cutting fulcrum shaft (6) below the cutting blade (1) as an axis. 24) is supported by the alligator, and the guide body (7) is attached to the knife head (2).
5) is attached so as to be sandwiched. Note that (26)
Is a knife bar, and (27) is a receiving blade of the movable cutting blade (1).

Therefore, when power is transmitted to the crank (2) and the crank lever (3) rotates about its shaft center, the shaft (23) protrudingly provided at the tip of the lever (3).
The roller (4) pivotally attached to is the rotation locus (a) indicated by a virtual line.
Drawing and rotating, and slidingly contacting the inside of the side wall (7a) of the guide body (7), the guide body (7) is fan-shaped in the right and left direction as shown by the arrow (b) with the pivot shaft (6) as the axis. It swings. The fan-shaped swing causes the guide body (7) to linearly reciprocate the knife head (25) in the left-right direction,
The cutting blade (1) reciprocates together with the knife head (25) on the receiving blade (27) via the knife bar (26) to cut the grain stalk of the grain stem.

As described above, the rotary motion of the crank lever (3) of the roller (4) about the shaft center thereof is once converted into the fan-shaped swing of the guide body (7), and the converted product is converted into a knife. The head (25) is converted into a linear reciprocating motion so that the cutting blade (1) reciprocates. In this case, if the vertical distance (H) between the roller (4) and the knife head (25) is set to a large value, even if the fan-shaped swing width of the guide body (7) is small, the cutting blade (1) will have a predetermined width. The stroke is obtained and the vibration is reduced, and if the balance weight is attached to the guide body (7) by the lower edge of the rotation fulcrum shaft (6) as shown by the phantom line (c), the vibration can be reduced. Of.

In this embodiment, the rotation fulcrum shaft (6) of the guide body (7) is located below the cutting blade (1), but the guide body (7) is turned upside down. The rotation fulcrum shaft (6) may be located above the cutting blade (1).

FIGS. 3 and 4 show other embodiments, particularly as shown in FIG. 4, the guide body (7).
-Shaped sliding contact bodies (28) (28) on the outside of the side wall (7a) of the
The arc-shaped body (28) (28)
If the knife head (25) is always slidably contacted via the blade, the transmission from the guide body (7) to the knife head (25) becomes smoother when the guide body (7) swings in a fan shape.

Also, the sward plate (16) of the cutting section (B)
The sward plate (16a) attached to the right end of the shunt plate (16a) is attached to the shunt plate hitch (29) by a fixture (30) as shown in "Fig. 5" and "Fig. 6". It is fixed, but the shunt board (16a) is a stub board hitch (2
The outer side portion (29a) of 9) and the outer edge (31) of the sward plate (16a) are formed to be substantially linear in a plan view, and along the ridge (32) made of concrete. When the aircraft is advanced and mowed, all the grain culms to be planted beside the ridge (32) can be mowed. In addition, the attachment plate (33) of the grass plate (16a) is formed into a V shape in a plan view and has a minimum length (D). Further, (34) shows a vertically-wound type raising case, which is attached to the sward board hitch (29) through a fixing plate (35).

Further, as shown in FIGS. 7 and 8, the oil supply pipe (36) is installed at the oiling location of the mowing section (B), as shown in FIGS. 7 and 8, and the outer surface of the main case (22) and this main case. -Two ribs (38) as shown on the outer surface of the lateral sub-case (37) which houses the driven shaft inherited from the drive shaft in the case (22).
(38) are arranged side by side, and an oiling pipe (36) is fitted between the two ribs (38) and (38), clamped, and piped to a desired position.

[0018]

As described above, the present invention is a hair clipper type in which the cutting blade (1) is reciprocated.
A roller (4) axially attached to the tip of a crank lever (3) having an axial center in the front-rear direction is rotated in the left-right direction around a rotary fulcrum shaft (6) located above or below the cutting blade (1). The guide lever (7) swinging in a fan shape is engaged with the crank lever.
The cutting blade (1) is converted by the guide body (7) that converts the rotational movement of the roller (4) around the axis of (3) into a fan-shaped swing.
Since it is characterized by making it reciprocate,
The roller (4) rotates about the axis of the crank lever (3), and the rotation of the roller (4) causes the guide body (7) to be converted into a fan-shaped swinging motion about the rotation fulcrum shaft (6). , The cutting blade (1) transmits the linear reciprocating motion of the cutting blade (1) from the guide body (7) converted into the fan-shaped swinging motion, and the cutting blade (1) is smoothly transmitted to the cutting blade. It does not cause vibration of the reaping section (B).

[Brief description of drawings]

FIG. 1 is a side view showing a main part of the present invention.

FIG. 2 is a rear view of the main part.

FIG. 3 is a side view of a main part showing another embodiment.

FIG. 4 is a rear view of the main part of the same example.

FIG. 5 is a plan view showing a sward plate at the right end.

FIG. 6 is a side view of the same grass plate.

FIG. 7 is a perspective view showing a piping state of an oiling pipe.

FIG. 8 is a cross-sectional view taken along the line AA of “FIG. 7”.

FIG. 9 is a schematic side view of the entire combine.

[Explanation of symbols]

 1 Cutting blade 3 Crank lever 4 Roller 6 Rotating fulcrum shaft 7 Guide body

Claims (1)

[Claims] 1. A hair clipper type cutting machine comprising a cutting blade (1) reciprocating, wherein a roller (4) axially attached to a tip of a crank lever (3) having a longitudinal axis is provided as a cutting blade (4). 1)
Is engaged with a guide body (7) that swings in a left-right direction around a rotation fulcrum shaft (6) located above or below
Roller (4) centered on the axis of the crank lever (3)
A cutting blade drive device in a harvester, characterized in that the cutting blade (1) is reciprocally moved by the guide body (7) for converting the rotational movement of the blade into a fan-shaped swing.