JPH052966Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention mainly relates to a front cover of a rotary tiller capable of reverse tillage.

(b) Conventional technology Conventionally, this type of front cover has a cover made of a rubber plate removably attached to the front end of the main cover, and a strip-shaped leaf spring is fastened to this cover to provide a tilling claw of the rubber cover. Efforts were made to prevent it from getting caught on the shaft side.

(c) Problems that the invention aims to solve By the way, in this type of device, when a lump of soil forms on the front of the front cover, the cover is pushed backwards and deformed, causing the rotating claw to There was the inconvenience of coming into contact with it.

(d) Means for solving the problems Therefore, this invention is proposed in view of the above-mentioned problems, and is a rotary tilling device that can perform reverse tillage work in a suitable condition with less damage to the front cover. We try to provide the following. For this reason,
This invention took the following technical measures.

In the rotary tillage device, the rotary tiller has a main cover 9 covering the upper part of the tilling section, a front cover 10 and a rear cover 11 pivotally attached to the front and rear parts of the main cover 9, respectively, and a side cover 14 disposed on the side of the tilling section. The front cover 10 is configured so that it can be folded in the middle about the horizontal axis, and a rod 13 having a length greater than the tilling width is fixed to the lower end of the front cover 10. On the front side of the front cover 10, a plurality of leaf springs 15 are provided, which are strip-shaped when viewed from the front and whose ends are curved downward when viewed from the side, and the front end of the rod 13 is brought into contact with the lower end of the leaf spring 15. This prevents the front cover 10 from moving upward by a predetermined angle or more, and the rod 13 at the lower end of the front cover 10 is brought into contact with the front end of the side cover 14 to prevent the front cover 10 from moving upward by more than a predetermined angle.
The rotary tilling device is characterized in that it is configured to prevent the tiller from approaching the tilling section side.

(E) Embodiment and its Effects An embodiment of this invention will be described below based on the drawings.

First, to explain the configuration, reference numeral 1 is a rotary tillage device, and this rotary tillage device 1 includes an input shaft 2 that protrudes forward to obtain rotational power from the tractor (not shown) side, and an input shaft 2 that rotates. A transmission gear case 3 freely mounted on the shaft, a pipe 4 protruding from the side of the transmission gear case 3 in the left and right directions, a chain case 5 fixed to the outer end of the pipe 4, and a space between the chain case 5 and the side plate 6. A tilling shaft 7 installed in the tilling shaft 7, a plurality of tilling claws 8 planted in the longitudinal direction of the tilling shaft 7, a main cover 9 that covers the top of the rotating tilling claws 8, and a main cover 9 that rotates at the front and rear of the main cover 9, respectively. It consists of a front cover 10, a rear cover 11, etc. which are pivotally supported, and both the front cover 10 and the rear cover 11 are configured to be detachable from the main cover 9.
Further, the front cover 10 is divided into two parts, upper and lower, at the middle part, and these two front covers 10
a and 10b are connected and pivoted to each other via hinges 12 provided at appropriate intervals.

A rod 13 having a length wider than the tilling width (larger than the gap between the chain case 5 and the side plate 6) is fixed to the lower front cover 10b,
Both sides of the rear end of the rod 13 are configured to come into contact with side covers 14, 14 of the rotary tillage device 1. Further, reference numerals 15, 15 are strip-shaped leaf springs fixed to the upper end of the main cover 9, and the leaf springs 15, 15 are curved downward along the front cover 10 at an appropriate distance. , its lower end is configured to be able to come into contact with the rod 13. Although FIG. 3 specifically shows this state, when the rod 13 of the front cover 10 is in contact with this leaf spring, the front cover 10 does not move significantly upward, and the rod 13 does not move upward. Since the rear end of the front cover 13 is normally in contact with the front ends of the side covers 14, 14, the front cover 10 does not come abnormally close to the tilling shaft 7 side.

In addition, FIG. 4 shows this front cover 10 in a folded state and maintained in that state by two leaf springs 15, 15.

In the figure, reference numeral 16 is a mast, 17 is a handle for adjusting the plowing depth, and 18 is a gauge wheel.

If reverse tilling work is to be performed at this point, the front cover 10 is set in the state shown in FIG. 3, and the tilling shaft 7 is reversed to move the tractor forward. At this time, the soil tilled by the reversing tilling claws 8 is transferred rearward through the back sides of the front cover 10 and the main cover 9, and is crushed into small pieces during this time. The front cover 10 has a leaf spring 15
Since upward movement of more than a predetermined angle is prevented, a large amount of soil does not accumulate in front of the tiller claws, so horsepower is not consumed during forward movement, and leveling performance can be improved. In addition, when there is a lump of soil in the field, when raising the soil twice, or when breaking the ridges, use the fourth
As shown in the figure, lift the lower front cover 10b upwards and place this cover 1 inside the leaf spring 15.
If the cover 10b is kept in that position with the lower end of the cover 10b in contact with the cover 10b, the cover 10b will not get in the way during the work, and it becomes possible to perform the ridge breaking work etc. smoothly.

(f) Effects of the invention Since this invention is constructed as described above, it has the following technical effects. That is, if the front cover 10 is rotated upward about the shaft 12 and folded, the rod 13 fixed to the lower end of the front cover 10 will be attached to the leaf spring 15.
The front cover 10 does not hang down due to being pressed inside the front cover, and the front part of the front cover 10 is left wide open, which facilitates work such as breaking down the ridges and raising it up twice.

Use this front cover 10 during reverse tillage work.
If the bar 13 of the front cover 10 is held down by the lower end of the leaf spring 15, the tilled soil will pass through the inside of the main cover 9 backwards without being released forward. sent to,
The soil is finely crushed.

Further, even if the front cover 10 is pushed backward by soil or clods accumulated in front of the front cover 10 during work, a rod 13 is provided at the lower end of the front cover 10, and this rod 13 is used to cover the side cover 10. 1
Since it is in contact with the front end of 4, the front cover 10
is not damaged by the tilling claws 8. In addition, the rod 13 that prevents the front cover 10 from abnormally approaching the tilling section side is composed of one rod, and since this is fixed to the lower end of the front cover 10, it has the effect of reinforcing the front cover 10.
Moreover, since the structure is simple, it can be manufactured at low cost.

[Brief explanation of the drawing]

The figures show an embodiment of this invention, with Figure 1 being a partially cutaway side view, Figure 2 being a perspective view, Figures 3 and 4.
The figure is a side view. Explanation of symbols, 1...Rotary tillage device, 7...
... Tilling shaft, 8... Tilling claw, 9... Main cover, 10... Front cover, 13... Stopper (rod), 15... Leaf spring.

Claims (1)

[Scope of utility model registration request] In the rotary tillage device, the rotary tiller has a main cover 9 covering the upper part of the tilling section, a front cover 10 and a rear cover 11 pivotally attached to the front and rear parts of the main cover 9, respectively, and a side cover 14 disposed on the side of the tilling section. The front cover 10 is configured so that it can be folded in the middle about the horizontal axis, and a rod 13 having a length greater than the tilling width is fixed to the lower end of the front cover 10. On the front side of the front cover 10, a plurality of leaf springs 15 are provided, which are strip-shaped when viewed from the front and whose ends are curved downward when viewed from the side, and the front end of the rod 13 is brought into contact with the lower end of the leaf spring 15. This prevents the front cover 10 from moving upward by a predetermined angle or more, and the rod 13 at the lower end of the front cover 10 is brought into contact with the front end of the side cover 14 to prevent the front cover 10 from moving upward by more than a predetermined angle.
A rotary tilling device characterized in that the rotary tiller is configured to prevent the tiller from approaching the tilling section side.