JPS605763Y2 - Structure of tillage cover - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a tilling cover in a rotary device.

In a rotary device, the tilling cover that covers the rotary tilling section is conventionally separated from the upper cover on the upper side and the rear cover on the rear side, and the rear cover is attached to the rear end of the upper cover and is pivoted vertically on a horizontal axis. They are freely connected.

Therefore, when working in wet fields with a large amount of settlement using a rotary device equipped with this type of tilling cover, lift the rear cover upwards to open the rear side of the rotary tiller section to better discharge the tilled mud to the rear. Even if you try, the rear cover 1
There is a limit to the lifting amount of 3, and the tilling claws trap tilled mud, resulting in poor work efficiency and large power loss.

Furthermore, when working with the rear cover lowered in fields other than wet paddy fields, conventional methods have had the drawback that the rear cover cannot be brought close enough to the rotary plowing section to improve the soil crushing effect.

In view of these conventional problems, the present invention was provided with the aim of improving workability in wet fields, reducing power loss, and improving the soil crushing effect in dry fields. , is characterized by a rotary device equipped with a main cover that covers the rotary tilling section from above and a rear cover that covers it from behind. The intermediate cover is connected, and the free end side of the intermediate cover and the upper end of the rear cover are connected by a horizontal pivot so that both covers can be bent freely, and the side opposite to the rotary tilling part of both covers is connected. An adjusting means is provided to adjust and fix the bending angles of both covers, and a locking device is provided on the fixed side to lock the intermediate cover in the raised position so that the rear cover opens the rear of the rotary tilling section. At the point.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
The figure shows a rotary device attached to the rear of an agricultural tractor.

Reference numeral 1 is a rotary fuselage, with a gear box 2 in the upper center, support tubes 3 on both sides, a transmission case 4, etc.

The gear box 2 has an input shaft 5, and power is transmitted from the input shaft 5 to the rotary tiller 7 via a relay shaft 6 in the support cylinder 3 and a transmission system in the transmission case 4.

The rotary tiller 7 is controlled by a claw shaft 8 and a large number of tiller claws 9 provided thereon.

Reference numeral 10 denotes a main cover that covers the rotary plowing section 7 from above, and is fixed to the rotary body 1. An intermediate cover 12 is connected to the rear end of the main cover 10 so as to be able to swing up and down about a horizontal axis 11. has been done.

13 is a rear cover that covers the rotary tiller 7 from behind;
The rear cover 13 is bendably connected to the end of the intermediate cover 12 by a horizontal pivot 14 at its upper end.

15 is an adjusting means for adjusting and fixing the bending angles of the intermediate cover 12 and the rear cover 13, and both covers 12.1
It is provided on the opposite side to the rotary tilling section 7 of No. 3.

The adjustment means 15 includes an upper bracket 16 fixed to the intermediate cover 12, a link 18 pivotally connected to this by a pin 17, and a lower bracket 19 fixed to the rear cover 13. A lower bracket 19 is formed on one of the engaging portions 20.
The engaging pin 21 is configured to be engaged with the engaging pin 21 which can be freely inserted and removed.

Reference numeral 22 denotes a side cover fixed to the rotary body 1, and a pin-shaped locking tool 23 for locking the intermediate cover 12 in the raised position is provided on the upper side of the side cover 22 so as to be freely inserted and removed. ing.

When the intermediate cover 12 is in the raised position, the rear cover 13 opens the rear of the rotary tiller 7 as shown in the imaginary line.

Reference numeral 24 denotes a bullet lowering mechanism that lowers the rear cover 13 downward, and is provided between the rotary body 1 and the rear cover 13.

The gear box 2 has an open rear upper side, and a cover 20 is attached to the edge of the opening via a backing 25.

A replacement gear 27 for replacing the gear in the gear box 2 is attached to the cover 26, and is pivotally connected to a fixing fitting 29 on the gear box 2 side by a pin 28 at the rear lower end, and a top piece at the front upper end. 30 is removably engaged with the latch fitting 31.

Note that when attaching or detaching the cover 26, it is necessary to move it up and down as shown in FIG.
2 is fitted.

Next, the operation of the above configuration will be explained.

The solid line in Figure 1 shows the working conditions in the dry field.

The intermediate cover 12 and the rear cover 13 are bent in a dogleg shape so that the pivot 14 is separated from the rotary tiller 7.

At this time, the rear cover 13 approaches the rotary tiller 7 as much as possible, and a space is created between the intermediate cover 12 and the rotary tiller 7.

Therefore, if you rotate the tilling claws 9 and till the soil in this state,
The tilled soil that is about to be thrown backwards collides with the rear cover 13 and is crushed, and a part of it is caught in the tilling claws 9 and sent to the upper space side as it rotates, so that the tilled soil cannot be tilled. Interference with the claws 9 significantly improves the soil crushing effect.

Then, as the amount of tilled soil increases, the intermediate cover 12 and rear cover 13 will change the axis 11 while maintaining the bending angle shown by the solid line.
Rock around and backwards.

If the soil crushing effect is not required, the adjustment means 15 may be used to adjust the intermediate cover 12 and rear cover 13 so that they are nearly linear.

Alternatively, the beam may be bent in the opposite direction to the solid line.

When the amount of subsidence is large in wet fields, the intermediate cover 12 is locked in the raised position as shown by the imaginary line with the locking tool 23, and the rear of the rotary tiller 7 is opened, so that the tilled mud can be quickly released to the rear. This allows for better work efficiency and prevents power loss.

In this case, by adjusting the bending angle of the rear cover 13 with respect to the intermediate cover 12 using the adjustment means 15, it is possible to prevent mud from scattering backward depending on the situation of the wet field.

Note that the bullet lowering mechanism 24 is left in a free state.

The engaging portion 20 of the link 18 may have a pin shape as shown in FIG. 1, or may be formed with an L-shaped notch as shown in FIG. 3.

According to the present invention, the intermediate cover 12 is connected to the rear end of the main cover 10 so as to be swingable up and down about the horizontal axis 11,
The free end side of the intermediate cover 12 and the upper end of the rear cover 13 are connected by a horizontal pivot 14 so that both covers 12, 13 can be bent freely.
On the opposite side of the rotary tiller 7, both covers 12.1
Since the adjustment means 15 for adjusting and fixing the refraction angle of the rotary tiller 7 is provided, by adjusting the refraction angle of the intermediate cover 12 and the rear cover 13, the shape of the cover on the rear side of the rotary tiller 7 can be adapted to the working conditions. You can change it accordingly.

Therefore, it is very effective to bring the rear cover 13 closer to the rotary tiller 7 and to improve the soil crushing effect.

In addition, the adjusted intermediate cover 12 and rear cover 13 operate like one cover with the pivot 11 at the rear end of the main cover 10 as a fulcrum, so it is the same as the conventional one with only the main cover 11 and rear cover 13. The rear cover 13 has a locking tool 23 on the fixed side to lock the intermediate cover 12 in the raised position so that the rear cover 13 opens the rear of the rotary tiller 7. During work, the intermediate cover 12 is placed in a raised position to open the rear part of the rotary tilling section 7, and the tilled mud can be easily thrown to the rear, improving work efficiency and reducing power loss.

Also at this time, by adjusting the bending angle of the rear cover 13 with respect to the intermediate cover 12 using the adjusting means 15,
It is possible to prevent mud from scattering backwards.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention, FIG. 2 is a cross-sectional view of a cover attachment portion thereof, and FIG. 3 is a side view showing a modified example of the link. 1... Rotary body, 2... Rotary plowing section, 10... Main cover, 11, 14...
... Pivot, 12... Intermediate cover, 13...
... Rear cover, 15 ... Adjustment means, 23.
...Locking tool.

Claims (1)

[Scope of utility model registration request] In a rotary device including a main cover 10 that covers the rotary tiller 7 from above and a rear cover 13 that covers it from the rear, an intermediate cover 12 is provided at the rear end of the main cover 10 so as to be vertically swingable around a horizontal axis 11. The roadside side of the intermediate cover 12 and the upper end of the rear cover 13 are connected by a horizontal pivot 14 so that both covers 12 and 13 can be bent freely.
Adjustment means 15 for adjusting and fixing the bending angles of both covers 12 and 13 is provided on the opposite side of the rotary tilling section 7 of both covers 12 and 13, and the rear cover 13 is connected to the rear of the rotary tilling section 7. Open the intermediate cover 1.
A tillage cover structure characterized in that a locking tool 23 for locking the tiller cover 2 in the raised position is provided on the fixed side.