JPH02195812A - Device for driving reaping blade - Google Patents

Abstract

PURPOSE:To obtain a reaping blade device with hardly any vibration by reciprocating a pair of movable blades in the form of a hair clipper with respective rocking arms left and right and operating the pair of the movable blades with an interlocking rod and driving rod left and right in the opposite directions. CONSTITUTION:A movable blade (1A) is operated with a rocking arm 2 reciprocating left and right with a driving rod 6 interlocked from a driving arm 5 and a rocking arm 3 is reciprocated left and right with an interlocking rod 4 interlocked from the rocking arm 2 to operate a movable blade (1B). The pair of the movable blades (1A) and (1B) are interlocked so as to operate in the left and right opposite directions.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a clipper-type cutting blade drive device.

Prior Art and Problems to be Solved by the Invention In clipper-type cutting blade devices for cutting off shell culms, etc., this cutting blade device is often configured in such a way that a movable blade slides in the left and right directions relative to a fixed blade. However, since the movable blade device undergoes a large swing due to left-right sliding, there is a technique in which the movable blade is divided into left and right halves and configured to operate in left-right opposite directions to prevent vibrations.

However, although the swing caused by the left-right sliding of the movable blade is reduced, there is a problem in that it is difficult to reduce the swing of the movable blade as a whole because of the swing caused by the drive device that drives the movable blade.

Therefore, the present invention aims to provide a cutting blade device with less swinging by reducing the swinging caused by the clipper-type cutting blade drive device.

Means for Solving the Problems This invention provides a pair of movable blades (1) in the form of clippers, each of which has tt and rJh arms (2) (3) that reciprocate left and right.
An interlocking rod (4) that interlocks between each of the drive arms (2) and (3) and a drive that interlocks between one of these swing arms (2) and the drive arm (5). A cutting blade drive device is constructed in which a rod (6) is provided facing in the left-right width direction, and the pair of movable blades (1) are interlocked so as to operate in left-right opposite directions.

Function and effect of the invention A pair of movable blades (1) in the form of a hair clipper are connected to a drive arm (5).
One of the movable blades (1) is operated by a swinging arm (2) that reciprocates left and right with a drive rod (6) that is linked from the swinging arm (2), and the interlocking rod (
4), the other swinging arm (3) is reciprocated left and right, and this swinging arm (3) rotates the other movable blade (1).
) are operated, and these pair of movable blades (1) are interlocked to operate in left and right opposite directions.

An interlocking rod (4) that interlocks between these swing arms (2) and (3), and a drive rod (6) that interlocks between one of these swing arms (2) and the drive arm (5). are provided facing in the left and right width direction, and the pair of movable blades (1) are interlocked to operate in left and right opposite directions, so that one swing arm (
2), the interlocking rod (4) that interlocks the other swinging arm (3) from this swinging arm (2) operates in opposite phase at a short distance with respect to the inertia of the drive rod (6) that moves the swinging arm (2). Therefore, it is possible to obtain a cutting blade drive device that is dynamically balanced and has a large vibration-proofing effect.

Furthermore, since the pair of movable blades (1) are interlocked to operate in opposite left and right directions, they are dynamically balanced, and the swinging of the entire cutting blade device can be significantly reduced.

Embodiment In addition, on the farm side, the reaping device is provided with a gear case (8) in a T-shape at the lower end of the reaping frame (7), and a reaping frame (9) provided on the lower side of this gear case (8). A plurality of weeding rods (11) for weeding the culms are provided on the front frame (10) of the reaping frame (9) so as to protrude forward.

A mounting plate (12) that protrudes forward is provided at the mounting position of the branching rod (11) of the front frame (10).
2), an L-shaped cutting blade stand (13) when viewed from the side is provided spanning between the right and left outer grass dividing rods (11), and the cutting blade stand (13)
is tightened with a bolt through a long hole (14) so that the vertical position can be freely adjusted. A pair of movable blades (1) in the form of clippers are mounted on this cutting blade stand (13).

A pair of movable blades (1) are an upper movable blade (IA) and a lower movable blade (
The upper movable blade (IA) has a configuration in which the upper movable blade (IA) has a chevron-shaped cutting blade connected to the lower side of the upper cutting blade bar (15) by fixing it with a rivet. The lower movable blade (IB) has a shape in which a chevron-shaped cutting blade is fixed to and connected to the upper cutting blade bar (16) with a rivet.

The upper movable blade (IA) is integrally provided with an upper mowing blade head (17) projecting rearward on the upper mowing blade par (15),
The lower moving blade (IB) is integrally provided with an upper cutting blade head (18) projecting rearward below the upper cutting blade bar (16). The upper cutting blade head (18) is curved upward,
The rear end portion is located at the same height as the upper cutting blade head (17). The upper cutting blade head (17) is the upper movable blade (IA).
The upper mowing blade head (18) is located closer to the left and right sides of the lower movable blade (
A notch (24) is provided in the cutting blade stand (13) within the range of left and right reciprocating movement of the upper cutting blade head (18).

A lower tank moving plate (19) is fixed to the tip of the cutting blade stand (13) with rivets, and the upper surface of this lower tank moving plate (19) is brought into contact with the lower surface of the lower moving blade (IB). , the rear side surface is brought into contact with the upper cutting blade bar (16).

Blade holders (20) that press the upper movable blade (IA) and the lower movable blade (IB) in slidable contact are arranged at appropriate intervals along the entire length.

The blade retainer (20) is formed of a spring plate shaped like a letter 0 when viewed from the side, and is fixed to the cutting blade stand (13) with a bolt (21). ) is pressing against the side. At the bottom of this upper tip, the lower tank moving plate (
An upper motion plate (22) is fixed with rivets at a position facing the upper motion plate (22), and the lower surface of the upper motion plate (22) is brought into contact with the upper surface of the motion blade (IA), and the rear surface is brought into contact with the upper cutting blade bar (15). In addition, the upper cutting blade bar (1
5) The rear side surface is pressed by a pressing plate (23).

The upper movable blade (IA) and the lower movable blade (IB) are positioned in the longitudinal direction by the blade holder (20), and the upper and lower movable blades (LA) are positioned by the bolt (21).
IB) can be slidably and press-contacted.

One swinging arm (2) is located at the side end of the reaping frame (9) between the outer end and the dividing rod (11) inside thereof, and is attached to the rear side of the front frame (10). The support shaft (2) of the plate (25)
6) is provided so as to be rotatable around the other swing arm (3
The front frame (
10) is provided rotatably around a support shaft (28) of a mounting plate (27) provided on the rear side.

There is a roller (29) on the underside of one end of one swinging arm (2).
The roller (29) is rotatably fitted into the notch of the upper cutting blade head (17). Further, a roller (30) is rotatably provided below one end of the other swinging arm (3), and this roller (30) is connected to the upper cutting blade head (1).
8) is rotatably fitted into the notch.

The drive arm (5) at the lower end of the gear case (8), which receives power from the transmission shaft inside the reaping frame (7), and the other end of one swing arm (2) are interlocked and connected by a drive rod (6).
The pin (31) of the roller (29) at one end of the swing arm (2)
) and the other end of the other swinging arm (3) are interlocking rods (4
), and the rotation of the drive arm (5) causes the swinging arms (2) and (3) to rotate back and forth to the left and right. blade(
IA) and the lower movable blade (IB) are interlocked so that they operate in left and right opposite directions.

A drive rod (6) that interlocks between the drive arm (5) and one swing arm (2), and each swing arm (2) (3).
The interlocking rod (4) that interlocks between the two is provided toward the left and right reaping width directions.

One end of the interlocking rod (4) is connected to one swinging arm (2).
The upper surface of the front end is rotatably connected to the bin (31), and the other end is rotatably connected to the lower surface of the rear end of the other swing arm (3). The interlocking rod (4) is provided diagonally rearward toward the other swing arm (3) when viewed from above, and is provided toward the other swing arm (3) when seen from the front.
) is installed with a downward slope toward the side.

When the drive arm (5) is transmitted and rotated, the drive rod (6
) are interlocked, and one swinging arm (2) is the support shaft (26).
The upper movable blade (IA) is reciprocated left and right by the roller (29) at the front end via the upper cutting blade head (17).

The other swinging arm (3) is reciprocated left and right around the support shaft (28) by the interlocking rod (4) interlocked from the pin (31) of the roller (29) at the front end of one swinging arm (2). The roller (30) at the front end of this swing arm (3) moves the lower moving blade (IB) through the upper cutting blade head (18).
are interlocked to operate in left and right opposite directions relative to the upper moving blade (LA).

An interlocking rod that rotates the other swing arm (3) from this swing arm (2) back and forth in the left and right directions in response to the inertia of the drive rod (6) that moves one swing arm (2) back and forth in the left and right directions. (4) are interlocked in opposite phases at a short distance, so a mower blade drive device that is dynamically balanced and has a large vibration-proofing effect can be achieved.

In addition, since the pair of movable blades (1) are interlocked to operate in opposite left and right directions, the movable blades (1) are also dynamically balanced, and the movable blade device as a whole can swing more significantly than conventional mowers. can be reduced.

In Fig. 1, the left and right swing arms (2) and (3) are placed between the dividing rods (11) and
) (3) Since a space narrowed by the grass dividing rods (11) on both sides is left open between the grain culms, clogging and accumulation of weeds and mud can be reduced when the grain culms are harvested.

In addition, in a cutting blade device having a four-row cutting width as shown in Fig. 6, the left and right swing arms (2) and (3) are attached to the rear side of the space at the left and right outer ends narrowed by the dividing rod (11). It is also possible to have a configuration in which the

In addition, as shown in Fig. 7, in a cutting blade device with a cutting width of 5 or 6, the left and right swinging arms (2) and (3) are connected to a space narrowed by the grass dividing rod (11) in the center. It is also possible to have a configuration in which the space portions are arranged at the rear side of the left and right spaces with space between them.

FIG. 8 is a schematic plan view showing another embodiment, in which a pair of left and right movable blades (1) are provided above a fixed blade (32) on the lower side. The same parts as in the above embodiment are given the same reference numerals.

Of the pair of movable blades (1), the left and right side movable blades (IA
) is operated in the left-right direction by one swinging arm (2), and the movable blade (IB) on the other side is operated in the left-right opposite direction with respect to the movable blade (IA) by the other swinging arm (3). It is configured to be linked so that

When the drive arm (5) is transmitted and rotated, the drive rod (6
) are interlocked, one of the swinging arms (2) is reciprocated left and right, and this swinging arm (2) moves the - side movable blade (I
A) slides back and forth on the fixed blade (32). The other swing arm (3) is reciprocated left and right by the interlocking rod (4) interlocked from the front end side of one swing arm (2), and this swing arm (3) allows the movable blade on the other side to (I
B) reciprocates left and right on the fixed blade (32) in the left-right opposite direction with respect to the negative side movable blade (IA).

Since the pair of upper left and right movable blades (IA) and (IB) slide in opposite left and right directions relative to the lower fixed blade (32), the swinging of the entire cutting blade device can be significantly reduced. Can be done.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view, FIG. 2 is a side view, FIG. 3 is a sectional view taken along line A-A in FIG. 1, and FIG. 4 is a cross-sectional view of FIG. 5 is a partial front view, FIG. 6 is a schematic plan view, FIG. 7 is a schematic plan view, and FIG. 8 is a schematic plan view of another embodiment. In the figure, (1) is the movable blade, (2) and (3) are the swinging arms, (4) is the interlocking rod, (5) is the drive arm, and (6) is the movable blade.
) indicates the drive rod.

Claims (1)

[Claims] A pair of movable blades (1) in the form of a hair clipper are individually interlocked by swinging arms (2) and (3) that reciprocate from side to side, and an interlocking rod that moves between these swinging arms (2) and (3). (4)
and a drive rod (6) that interlocks between one of these swing arms (2) and drive arms (5) are provided facing in the left and right width direction, and the pair of movable blades (1) are arranged in opposite directions. A mower blade drive device that is configured to be interlocked so that it operates in a direction.