JPS586817B2 - Rotary type trencher used in orchards, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary trencher used in orchards and the like.

Maintenance work in orchards includes general weeding, as well as fertilization by digging special deep trenches and burying straw waste.

The groove is usually about 401 to 80 cm long, and is usually dug using a dedicated trenching device called a trencher.

A trencher is a so-called chain saw with a digging claw attached to an endless rotating chain, and is used to dig trenches into the earth's surface.

However, its drawback is that it is expensive.

A fertilization trench with the depth described above can be dug with an inexpensive rotating drum rotor instead of an expensive chainsaw trencher.

Therefore, a center drive power transmission case with drum rotors attached to both sides is called a rotary trencher and has become quite popular.

One of the drawbacks of the rotary trencher is that the soil dug up by the rotary trencher returns to the trench.

Father, there is also the flaw that the groove itself is prone to collapse.

Therefore, the present invention has been devised by providing rotary shafts protruding in the left-right direction on both sides of the lower end of the power transmission case.
A rotary trenching device having a plurality of tilling claws attached to the outer peripheral surface of a rotating drum is attached to the shaft sill, and the rotary trenching device is configured to rotate in the opposite direction to the forward direction, and The axis of the trenching device is configured to become lower on both the left and right sides as it gets farther from the case, and the soil thrown up by the trenching device collides with the upper position of the trenching device. A cover is attached, and the cover has a shape that gradually increases in height as it moves away from the case, and on the left and right outer ends, suspended soil scattering prevention plates are suspended in a direction parallel to the direction of movement of the aircraft. This is a rotary trencher used in orchards, etc.

To explain with reference to the drawings, reference numeral 1 denotes a tractor, and a working machine 3 is attached to the rear of the tractor 1 via a coupling device 2.

The working machine 3 is formed by a power transmission case 4, a rotary groove digging device 5, a cover 6, and the like.

The power transmission case 4 is viewed from the side (as shown in Figure 1)
The case 4 has a shape that becomes lower towards the rear, and a rotary shaft 8 to which a passive sprocket 7 is fixed is mounted on the lower end of the case 4 in the left-right direction (FIG. 3).

The sprocket 7 is fixed to the center of a rotating shaft 8, and the rotating shaft 8 projects from the case 4 in the left and right directions.

The rotating shaft 8 is a horizontal shaft, and rotates in the opposite direction to the forward direction, so that the grooving device 5 throws up soil in the direction of arrow A in FIG.

An outer cylinder 9 is fitted around the outer periphery of the rotating shaft 8 .

The outer cylinder 9 has its base 10 fixed to the case 4 side.

The outer peripheral surface 11 of the outer shell 9 is formed into an inclined surface so as to become lower toward the outside.

Bearings 12 and 13 are attached to the outer circumferential surface 11, and the rotating shafts 14 and 1 are connected via the bearings 12 and 13.
4' is provided.

Therefore, the angle formed by the generatrix and parallel line of the rotary shaft cylinders 14, 14' and the axial center line of the rotary shaft 8 is an α angle (the third
A desired number of mounting protrusions 15 are provided on the outer circumferential surface of the rotating shaft cylinders 14, 14', projecting at right angles.

Thus, the rotary groove digging device 5 is formed of a drum 16 and claws 17.

The drum 16 has a hollow pipe shape (FIG. 2), and is doubly fitted on the outside of the rotating shaft cylinders 14, 14'.

A retaining protrusion 18 is provided on the inside of the drum 16, which comes into contact with the attachment protrusion 15 when the drum 16 is fitted, and the retaining protrusion 18 and the attachment protrusion 15 are overlapped and fixed with the stopper 19. do.

The direction of the generatrix of the outer peripheral surface of the drum 16 is
It is parallel to the generatrix direction of 4'.

Therefore, when viewed from the front or rear side of the machine body, the left and right rotary groove digging devices 5, 5 are attached in a V-shape, and the groove 20 dug thereby also becomes a groove that is wider toward the top.

At the upper positions of the rotary trench excavating devices 5, 5, there are
A cover 6 shown in the figure is provided.

The cover 6 has a base 21 attached to the power transmission case 4 and is wide open on the left and right sides.

The height of the cover 6 gradually increases as it moves away from the case 4.

A scattering prevention plate 2 is provided at the outer end 22 of the left and right sides of the cover 6.
3 is suspended by its own weight.

The anti-scattering plate 23 is in a direction parallel to the direction of movement of the aircraft.

Since the present invention has the above-mentioned configuration, the tractor 1 is operated, and the left and right rotary groove digging devices 5, 5 are operated via the power transmission case 4.
When the groove digging devices 5, 5 move forward while rotating in an up-cut manner, the groove digging devices 5, 5 are formed in a V-shaped configuration in which the upper portions are separated from each other and the lower portions are close to each other, as shown in FIG. In addition, since the cover 6 is configured to be so high as to extend outward, it does not fall much into the area a near the groove 20, but is embanked into the area distant from the groove 20.

That is, when the rotary trench excavating devices 5, 5 are not mounted on an inclined shaft but are mounted on a horizontal shaft, the soil excavated by the claws 17 and thrown up is moved along the dotted line arrow. However, the rotating shafts 14, 14' of the present invention are guided as follows.
As shown in the figure, since the installation is tilted at an α angle, the soil thrown up from the claw 17 will fall as indicated by the dotted arrow C. It flies in two directions, and is embanked further away from the trench 20.

Therefore, the phenomenon of the excavated soil returning into the trench 20 is less likely.

In addition, soil scattered in the direction of arrow 2 is removed from the outer end 22 of the cover 6.
A scattering prevention plate 2 in a direction parallel to the direction of movement of the aircraft suspended from the
Press down to prevent the soil from scattering.

Since the groove 20 has an open top, it is less prone to collapse and facilitates fertilization work.

Also, looking at the rotation state of the pawl 170, when it rotates in the upper part (that is, when it rotates near the power transmission case 4),
Since it is separated from the case 4, even if a stone or the like is scooped up, it is unlikely to collide with the chain case.

Furthermore, because of the structure of the groove 20 described above, the power consumption can be reduced compared to the case where a completely vertical groove is created.

The present invention has the above-mentioned configuration and function, and in particular, the rotary shaft 1 that protrudes in the left-right direction on both sides of the lower end of the power transmission case 4.
4 and 14' are provided, respectively, and the shafts 14 and 14' are respectively provided.
1 4' is equipped with rotary trenching devices 5, 5 having a large number of tilling claws 17 attached to the outer circumferential surface of a rotating drum 16, and the rotary trenching devices 5, 5 are installed in the direction of forward movement. In addition, the axes of the trenching devices 5, 5 are configured to become lower on both the left and right as they move away from the case 4, and the upper position of the trenching devices 5, 5 is A cover 6 is attached to the trench excavation devices 5, 5 against which the soil lifted up collides with, and the cover 6 has a shape that gradually becomes higher as it goes away from the case 4, and has a shape that gradually increases in height as it goes away from the case 4. Since the construction is such that the plates 23, 23 for preventing flying soil from scattering are suspended, the mounting structure of the groove digging devices 5, 5 is a V-shaped groove in which the upper part is spaced apart from each other and the lower part is close to each other. This, together with the fact that the shape of the cover 6 becomes taller toward the outside, and the fact that the scattering prevention plate 23 is suspended from the outer end of the cover 6, prevents the soil that has been thrown up into the groove 20. This has the effect of allowing the embankment to be placed further away.

[Brief explanation of the drawing]

Figure 1 is an overall side view, Figure 2 is a partial sectional view of the power transmission case in the direction of arrow P in Figure 1, Figure 3 is a sectional view showing the power transmission mechanism of the rotating shaft cylinder, and Figure 4 is the cover. FIG. Explanation of symbols, 1...tractor, 2...coupling device,
3...Working machine, 4...Power transmission case, 5...Rotary groove digging device, 6...Cover, 7...Sprocket,
8...Rotating shaft, 9...Outer case, 10...Base, 11
...Outer peripheral surface, 12, 13...Bearing, 1 4
, 1 4'... Rotating shaft simple, 15... Mounting protrusion,
16... Drum, 17... Tilling claw, 18... Engaging protrusion, 19... Locking screw, 20... Groove, 21... Base, 22... Outer end, 23...・Scatter prevention plate.

Claims (1)

[Claims] 1 Rotary shaft cylinders protruding in the left-right direction are provided on both sides of the lower end of the power transmission case, and a rotary groove digging device with a large number of tilling claws attached to the outer peripheral surface of the rotating drum is attached to the shaft cylinders. In this case, the rotary groove moat device is configured to rotate in the opposite direction to the forward direction, and the axis of the groove moat device changes in both the left and right directions as the distance from the case increases.
A cover is installed at a position above the trenching device, on which the soil thrown up by the trenching device collides with.
, the cover has a shape that gradually increases in height as it moves away from the case, and the outer ends of the left and right sides are suspended with plates to prevent flying soil from scattering in a direction parallel to the direction of movement of the aircraft. Rotary type trencher used in etc.