JPS6026577Y2 - Mower cover that also served as a pioneering device - Google Patents

Description

[Detailed description of the invention] This invention is a mower cover that also serves as a device that covers the sliding rod and power groove mechanism that are connected to the power mechanism to reciprocate the upper blades installed in parallel to the knife bar from side to side. There is something about it.

゛In conventional mowers, the purpose of covering the power transmission mechanism including the sliding rod of the mower body is purely to prevent cut grass culms from getting tangled with the power transmission mechanism. It is something that only one can have.

And in order to distribute the cut grass culms, different compositions of grass require sticks.

However, it is not economical to attach a grass rod of a different configuration, and the grass rod moves back and forth from side to side, which is dangerous and poses a safety problem.

In view of this point of view, the present invention uses a power mechanism to move the cover back and forth in conjunction with the movement of the sliding rod that reciprocates the knife bar of the mower from side to side, thereby distributing the grass. We aim to provide the following.

Hereinafter, detailed embodiments of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 denotes a mower attached to the front of an agricultural mobile machine 2 via a hitch box, and this mower 1 is provided with a reaping device 3 of a known configuration.

This reaping device 3 is connected via a cutter bar 4 to lower blades 5.5.
. . . are arranged in parallel, and upper blades 6, 6, . . The plate springs 10 are arranged at appropriate intervals, and the upper blade 6 is press-adjusted as appropriate via the plate springs 10.

Note that the configuration of the plate spring 10 is not an essential requirement, and may be a mower in which the upper blade 6 reciprocates left and right over the lower blade 4.

Next, the power transmission mechanism 11 for driving this cutting blade device 3 will be explained, but the configuration of this power transmission mechanism 11 is not particularly limited, and it can be configured to drive the cutting blade device 3. Good to have.

In the figure, the pulley 13 of the prime mover 12 of the agricultural mobile machine 1
A belt 17 is stretched between the pulleys 15 of the mounting bracket 14 with a tension pulley 16 interposed between the levers 19 of the bundle 18 connected to the tension pulley 16.
This is to adjust the power transmission through.

The pulley 15 is supported by a shaft 2 which is pivotally supported on the mounting bracket 14.
A sprocket 21 is attached to the other end of the shaft rod 20.

Then, attach the bent piece 22 of the mounting bracket 14 to the hitch box 2.
A mounting bracket 14 is fixed to the hitch box 23 on the upper end surface of the hitch box 23 via bolts and nuts.

Reference numeral 24 designates a machine frame of the mower 1 that is connected to the hitch box 23, and its metal fittings 25 are inserted into the hitch box 23 and connected via bolts 26 and nuts 27.

28 is a metal fitting arranged at the lower end of the machine frame 24;
A shaft 29 is pivotally supported on the shaft 29. A sprocket 30 is attached to one end of the shaft 29, and a ball bearing ring 31 is attached to the other end.A chain 32 is hung between the sprocket 30 and the sprocket 21. It's a delivery.

Eccentric shafts 33.34, which are offset by 180 degrees from each other, are attached to approximately the center of this shaft rod 29 via flywheels 35.36.
Furthermore, a cylindrical body 37 is loosely fitted into the approximate center of the front surface of this metal fitting 28 so as to rotate concentrically with the shaft rod 29 to which the eccentric shafts 33 and 34 are connected, and between this cylindrical body 37 and the machine frame 24 of the mower 1. The structure is such that the forward inclination angle of the cylinder body 37 can be adjusted as desired through the arm rods 38, 39, through the small holes 40, 41 drilled at the joint ends of these arm rods 3B, 39, bolts 42, and nuts. be.

Furthermore, a plate body 46 is loosely fitted into the cylinder body 37.
This plate body 4 is
6 from being pulled out, and the plate body 46 is inserted into this horizontally long hole 43.
It prevents it from rotating by that much.

Therefore, even if the cutting blade device 3 is tilted left or right depending on the topography, the base end of the mounting arm 45 connected to the cutter bar 3
Since the plate 45 is attached to the tip of the blade, the plate 45 can be rotated by the width of the horizontally elongated hole 43, making it possible to cut grass according to the terrain.

47 is a sprocket 47 arranged at the tip of this plate 45
A knife head 51 is provided at the distal end of the crank 48 whose base end is connected to the sprocket 47 via an arm 50 of the knife head receiver 149, and the distal end of the knife head 51 is connected to the knife par. It is connected to 7.

A sideboard chain 52 is hung around the sprocket 47, and both ends of the chain 52 are connected to the eccentric shafts 33 and 34 through turnbuckles 53, respectively.

With this configuration, the mowing device 3 in □ mode 1 is driven to perform grass cutting work, and these configurations are conventionally known techniques.

The cover 54, which is the gist of the present invention, covers the power transmission mechanism from the sliding rod 53 that reciprocates the upper blade 6 left and right to the rear, and its cross-sectional shape is approximately U-shaped. It has a ladder shape with a large inclination as it reaches , and has a bent piece 55 whose tip is slightly bent and its rear edge is opened outward.

As described above, the tip of the cover 54 is slightly bent and integrally constructed, but only this bent portion may be constructed separately.

Further, to explain specifically how to attach the cover 54, the tip portion may be screwed directly onto the sprocket 47 via the bolt 56, or may be screwed onto the tip side of the sprocket 47 via a bearing or the like.

For example, as shown in FIG. 5, a metal fitting 59 is provided on the arm portion 50 of the knife head receiver 49, and the tip of the cover 54 is attached to the metal fitting 59 via a bolt 63.

In other words, a bolt 63 with a collar 61, a spring 62, etc. disposed inside a case 60 having a slightly arcuate long hole 60 is inserted into the bottom of the cover 54 with its tip opened.
The knife head receiver 49 is attached to the metal fitting 59 through the knife head receiver 49.
The distal end portion of the cover 54 is configured to reciprocate in the left-right direction in response to the left-right reciprocating motion of the cover 54 .

Further, the rear end portion of the cover 54 is directly screwed onto the cylindrical body 37 via a bolt 57 with some play.

For example, a bearing case 65, which is provided with the rear end of the cover 54 open, is attached to a metal fitting 64 provided on the plate 46 above the sprocket 47 via bolts 66.

When the cover 54 is attached to the top surface of the mower's power transmission mechanism using this mounting method, the cover 54 is attached as shown in Figure 6.
4, the tip thereof serves as a moving point and the rear end serves as a center point, and the cover 54 reciprocates left and right in response to the reciprocating movement of the knife head receiver 49.

In addition, the cover 54 can be attached to the crank 48, etc.
In short, it suffices to mount it so that the reciprocating motion is performed in conjunction with the left and right reciprocating motion of the upper blade 6.

With the above configuration, the tip of the cover 54 moves back and forth in cooperation with the left and right reciprocation of the upper blade 6 of the cutting blade device 3, and the rear end is attached with play, so that the reciprocation is possible. The cover 54 moves back and forth, although the movement is slightly less frequent.

Therefore, grass culms that try to get entangled with this cover 54 can be sorted out, and especially if the cross-sectional shape of the cover 54 is U-shaped, the grass culms will slide off the top surface and fall along the sides. Furthermore, the bent pieces 55 shake off grass culms that are about to move toward the agricultural mobile machine 2, and the fallen grass culms can be stepped on by the wheels 58 of the agricultural mobile machine 2.

In addition, since the cover 54 of the present invention has a ladder shape that becomes more sloped toward the rear, it has a lower slope than a cover of the same diameter.
By moving the grass culms along the left and right inclined surfaces of the cover 54, and by reciprocating the cover 54, the grass culms can be distributed to the left and right, and together with the effect of the bending piece 55,
Grass culms can be prevented from moving to the agricultural mobile machine 2.

In particular, when grass is flexible and the work is carried out during seasons of rain and wind, the grass gets tangled, but the cover 5 of the present invention
4 makes the distribution even more complete.

Therefore, the grass culms can be prevented from getting entangled with the mechanical parts of the agricultural mobile machine, and in addition to the original effect of the cover, the grass also has a function.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention. Figure 1 is a perspective view of the mower with the cover of the present invention removed, Figure 2 is a perspective view of the mower with the cover removed, and Figure 3 is a perspective view of the cover. Figure 4 is a sectional view taken along the line I-■ in Figure 3, Figure 5 is a partially cutaway side view of another embodiment showing how to attach the cover, and Figure 6 is a cross-sectional view taken along the line I-■ in Figure 3.
The figure is a plan view showing the movement of the cover. 7... Knife bar, 51... Sliding rod,
54...Cover, 55...Folded piece.

Claims (1)

[Scope of utility model registration request] The top surface of the power transmission mechanism connected to the knife head 51 that reciprocates the knife bar 7 from side to side is formed into a ladder shape that becomes increasingly sloped toward the rear, and has a cross section of approximately U with the rear edge open to the outside. The inkling that the letter-shaped cover 54 moves back and forth in conjunction with the movement of the knife head 51 is a cover for a motor that also serves as a device.