JPH0731201A - Rear cover of rotary tiller - Google Patents

Abstract

PURPOSE:To prevent rolling-up of an upper end edge part of a rubber plate attached in order to prevent adhesion of soil in the inside of a rear cover of a rotary tiller. CONSTITUTION:This rear cover of a rotary tiller is constituted by pressing the upper end edge part 4 of a rubber plate 3 attached with a lock tool 2 at a proper interval position to the inside of a rear cover 1 using a pressing plate 5 together fastened with a part of the lock tool 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear cover of a rotary cultivating device, and prevents a rubber position attached to the inside of the rear cover from being turned up.

[0002]

2. Description of the Related Art Plowed soil is likely to adhere to the inside of a rear cover of a tillage cover. Therefore, a rubber plate is attached to the inside of the rear cover.
The elasticity of the rubber plate prevents soil from adhering. However, when reversing the cultivator, the top edge of the rubber position is especially prone to flipping up, and the flipped top edge may hang down, or soil may be pushed from this part between the rear cover and the rubber position. Therefore, there is a defect that the rubber plate is easily damaged.

[0003]

According to the present invention, the upper edge 4 of a rubber plate 3 which is attached to the inner surface of a rear cover 1 at appropriate intervals with a stopper 2 and is attached together is fastened together with the stopper 2. The rear cover of the rotary tiller, which is held by the holding plate 5, is used.

[0004]

When the cultivated soil hits the rubber plate 3 of the rear cover 1 due to the rotation of the rotary tilling claw, the rubber plate 3 is attached to the rear cover 1 by the stoppers 2 at appropriate intervals. This elastic action distorts and makes it difficult for soil to adhere. Even if the rotary tilling claw is rotated in the reverse direction, the upper edge 4 of the rubber plate 3 is pressed against the rear cover 1 by the pressing plate 5, so that the upper edge 4 of the rubber plate 3 is pressed.
Soil is unlikely to enter between the rear cover 1 and the rear cover 1, and the rubber plate 3 is unlikely to be turned over or damaged. Further, since the stopper 2 of the pressing plate 5 is also fastened together with the stopper 2 of the rubber plate 3, the structure can be simplified.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rotary tiller 6 mounted vertically on a rear part of a tractor vehicle by a three-P link mechanism is mainly composed of a center drive type tiller transmission case 7, and is provided with tiller claws 8 on both left and right sides of its lower end. Has a cultivating shaft 9 and an input shaft 10 connected to a power take-off shaft on the vehicle body side for transmission to the cultivating shaft 9 on the upper front side, a lower link pin 11 connected to a lower link, and a top It has a mast 12 and the like connected to the link, and a tilling main cover 13 that covers the rotating upper part of the tilling claw 8. In addition, this tillage transmission case 7
A connecting arm 15 is provided so as to be adjustable up and down by a handle 14 from the rear to the rear, and a gauge wheel 16 for adjusting the working depth is attached to the rear end of the connecting arm 15.

A rubber plate or a rigid resin plate 17 is attached to the inner surface of the main cover 13 to prevent the attachment of cultivated soil. The rear cover 1 has a hinge 18 at the rear end edge of the main cover 13 so that the rear portion can be rotated up and down, and the lower end edge 19 can be pressed against the soil surface to be leveled.
Further, the hinge 18 is set slightly above the rear edge 20 of the main cover 13. The rear cover 1 is configured to be vertically rotatable with respect to the main cover 13 by a spring 21 mechanism, and the pressing force against the soil surface can be adjusted by operating the handle 22 via the spring 21.

A rubber plate 3 is attached to the inside of the rear cover 1 by a stopper 2. The rubber plate 3 may be made of a rigid resin and may have elasticity. The stoppers 2 are arranged on the rubber plate 3 at appropriate intervals. The rubber plate 3 is formed with a hole 24 into which a dish-shaped set bush 23 is fitted from below. The set bush 23 and the collar 25 allow the edge portion of the hole 24 of the rubber plate 3 to be sandwiched. Bolt 26
Is inserted from the outer side to the inner side of the rear cover 1, and is inserted into the collar 25, the hole 24 of the rubber plate 3, and the hole of the set bush 23, and is fixed by tightening with a nut 27. Therefore, a hollow portion 28 is formed between the rubber plate 3 and the rear cover 1 in the space between the stoppers 2 and the rubber plate 3 vibrates or distorts due to the hollow portion 28.
The adhesion of soil to the surface of the rubber plate 3 is prevented.

The upper edge 4 near the hinge 18 of the rubber plate 3
Has a certain distance from the stopper 2 on the upper end side,
The pressing plate 5 that overlaps the inside of the upper edge 4 and presses it so as to sandwich it with the rear cover 1 forms a co-clamping portion 29 that can be fitted inside the set bush 23 of the stopper 2. The bolt 26 is also inserted into the hole of the joint tightening portion 29, and is tightened by the nut 27 to fix the pressing plate 5, and between the pressing plate 5 and the rear cover 1, the upper edge portion of the rubber plate 3 is fixed. 4 is sandwiched to prevent drooping and prevent soil from entering between the upper edge 4 of the rubber plate 3 and the rear cover 1.

4 and 5, the difference from the above example is that
The rubber plate 3 inside the rear cover 1 and the rear end of the main cover 13
The rubber plate 3 is connected to the upper end of the rubber plate 3.
A rib 31 that is curved inward and protrudes at 0 is formed. As the rear cover 1 swings up and down around the hinge 18, the rib 31 is distorted to prevent soil from adhering to this portion, and soil enters between the rubber plates 17 and 3 and the main cover 13 or the rear cover 1. Prevent from doing. Reference numeral 32 is a sash made of a hard synthetic resin material, which holds the edges of the rubber plates 17 and 3 and holds them in place. Although the pressing position 5 is not provided, it may be provided in the same manner as described above.

In FIG. 6, a point different from the above example is that the rib 31 of the upper end connecting portion 30 of the rubber plate 3 is made to project from the inner surface of the rubber plate 3 by integral molding. The connecting portion 30 is fitted in the groove of the sash 32 so as to be slidable back and forth. Not only is the rear cover 1 rocked back and forth, but this rubber plate 3
When the acting force along the up and down direction is applied, it is absorbed by the sliding of the sash and the bending of the connecting portion 30.

7 and 8, the difference from the above example is that
The rear cover 1 has a structure of a connecting portion of the cultivating device 33, and a vertical slit 34 is formed in the rubber plate 3, and a rubber piece 35 which can be freely opened on both left and right sides by the slit 34 is formed on the cultivating device 33 of the rear cover 1. It can be made to face the notch 36 having a triangular shape that can be fitted and can be folded back from this notch 36.

In FIG. 9, a point different from the above example is that a ring-shaped groove 38 and a rib 37 extending around the hole 24 are provided on the pressing surface of the rubber plate 3 between the collar 25 of the stopper 2 and the set bush 23.
To form the rubber plate 3 between the groove 38 and the rib 37.
The hole 2 of the rubber plate 3 can be
The relative movement between the four edges and the set bush 23 is reduced to reduce the disengagement of the rubber plate 3 from the stopper 2.

FIG. 10 shows the outer peripheral edge 3 of the set bush 23.
By bending 9 toward the rubber plate 3 side at the outer peripheral portion of the collar 25 and sandwiching the rubber plate 3 with the collar 25, the edge of the hole 24 of the rubber plate 3 is bent to make it difficult to remove. Is.

[Brief description of drawings]

FIG. 1 is a partial side view of a rear cover.

FIG. 2 is an exploded perspective view thereof.

FIG. 3 is a side view of the tiller.

FIG. 4 is a side view showing another embodiment.

FIG. 5 is a side view showing a part of the operation thereof.

FIG. 6 is an operational side view showing another embodiment.

FIG. 7 is a perspective view showing another embodiment.

FIG. 8 is a side view thereof.

FIG. 9 is a sectional view showing another embodiment of the stopper.

FIG. 10 is a sectional view showing another embodiment of the stopper.

[Explanation of symbols]

 1 Rear cover 2 Stopper 3 Rubber plate 4 Upper edge 5 Presser plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seiji Kanami No. 1 Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Izeki Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] 1. An upper edge 4 of a rubber plate 3 which is attached to an inner surface of a rear cover 1 at appropriate intervals with a stopper 2 and is attached thereto.
Is a rear cover of a rotary tiller, which is held by a holding plate 5 that is fastened together with some of the stoppers 2.