JPS605106Y2 - Excavated soil guide device in rotary trench excavator - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an excavated soil guiding device for a rotary trench excavator used for excavating fertilization ditches, drainage ditches, etc.

Compared to digging a trench with an endless digging claw, using a rotor to dig a trench has the advantage of being able to excavate a large amount of soil with a wider width and with high efficiency. It is necessary to take measures to prevent this large amount of excavated soil from returning to the ditch.

For this purpose, the trench rotor cylindrical shaft is supported in a recessed shape when viewed from the front, and the top plate portion of the cover is formed into a substantially inverted hole shape when viewed from the front to reach the upper side. A trench excavator has been proposed in which excavated soil is thrown left and right from a trench claw, collides with a cover, and is further blown outward to the left and right by the inverted figure-eight shape of the cover.

Since the trench digging claw mainly throws the dug soil upward, the direction of this upward throwing force must be skillfully changed from side to side. The length of the top plate part of the cover is short enough to barely cover the upper part of the trenching claw, but it is not long enough to change the direction in which the excavated soil is released from side to side. Since the gently sloped part at the rear of the head is short, it becomes more difficult to change the direction as described above, and there is a high possibility that the head will fall back into the groove.

Therefore, in this invention, the shape of the cover is devised so that the direction of the backward release force can be changed to the left and right directions of the groove. , a grooving rotor cylindrical shaft having a protruding rotary shaft and each cylindrical core having a recessed shape when viewed from the front is provided so as to be rotationally driven by the rotary shaft,
Digging mouth: Digging up the soil with a groove digging claw attached to the cylindrical shaft, and providing a guide plate that is approximately inverted in the shape of a square when viewed from the front in order to guide the soil dug up by the groove digging claw to the left and right of the trench. In the rotary trench excavator, the guide plate has a sufficient front and rear length to cover the front and rear areas above the trench claw, and has a top plate portion that is inclined upwardly at the rear when viewed from the side. It has a front plate part and a rear plate part with a small slope, and is provided so that the soil dug up by the trenching claw is guided backward in the rotational direction of the upper trenching claw by the front and rear top plate parts. This is an excavated soil guide device for a rotary trench excavator.

The specific structure of this invention will be explained based on one embodiment shown in the drawings. As shown in FIG. As shown in FIG. 2, a rotary shaft 5 is supported approximately horizontally on the drive chain case 4 of No. 3 by bearings 6°6, and the left and right outer sides of the drive chain case 4 are attached to the outside of the outer periphery of each bearing 6. While fixing the mounting seat 7 on the inner hole of the hollow cylindrical fixed shaft 8 to the left and right protruding parts of the rotary shaft 5 from the drive chain case 4, the inner mounting seat 8a of the fixed shaft 8 is fixed to the Match the mounting seat 7 and fix both with mounting bolts.

The outer periphery of the cylindrical portion 8b of the fixed shaft 8 is formed into a circular cross section, and at the time of installation, the cylindrical center of the cylindrical portion 8b with respect to the axis C of the rotary shaft 5 is the intersection of the left and right outer sides of the cylindrical portion 8b. They are formed so that they intersect at P and are positioned above in the vicinity of the bearing 6.

Then, a mounting seat 9b...
A mounting bolt hole 9C is formed in the mounting seat 9b, and a grooved rotor cylindrical shaft 9 with internal gears 9d is formed in the inner hole of the cylindrical portion 9a. By fitting the cylindrical portion 9a of the grooving rotor cylindrical shaft 9 to the outer ring of the bearing 10.10 fitted to the grooving rotor cylindrical shaft 9.8b, the left and right grooving rotor cylindrical shafts 9. The center diameter of the cylinder 9, D, should be F-shaped when viewed from the front.

Drive gears 11 and 11 that mesh with the internal gear 9c are fitted to the left and right protrusions of the rotary shaft 5, respectively.
When the rotary shaft 5 is rotated, the trenching rotor cylindrical shafts 9, 9 are rotationally driven by the drive gears 11, 11.

Further, a trench body 12 is formed in which a ring-shaped mounting plate 12b is fixed in the inner hole of the hollow cylindrical part 12a.
Grooving claws 13.
... is attached with mounting bolt 14...

Then, the cylindrical portion 12 of this grooving body 12 is attached to the grooving rotor cylindrical shaft 9.
When fitting the mounting plate 12b onto the mounting seat 9b and screwing the mounting bolt 15 fitted into the mounting plate 12b into the mounting bolt hole 9c, the grooved body 12 is attached to the grooved rotor cylindrical shaft 9.
is removably attached, and when the groove digging body 12 rotates, the groove digging claws 13 near the center pass below the drive chain case 4, and upwardly move to the outside of the drive chain case 4. It is installed so that it passes along the side of the board while approaching it.

In addition, the front plate part 16b is formed such that the top plate part thereof is sloped upward with a large slope so as to sufficiently cover the upper front part of the grooving claw 13 which rotates in this way, and the grooving claw 13.・・・
・A rear plate portion 16a whose top plate portion is formed in a substantially inverted U-shape when viewed from the front and an upward slope with a small slope so as to sufficiently cover the upper rear portion, and a groove digging claw 13. Left and right guide plates 16.16, each consisting of a lower plate 16c that covers the rear, are attached to this trench excavator 3.

The soil excavated by the groove digging claws 13 from near the front of the groove 17 is thrown upward as shown by the arrow in FIG. 1 and collides with the top plate of the front plate 16b. However, the direction is changed to the rear by this top plate portion with a large inclination, and the rear plate portion 16
The soil collides with the top plate part 16a and is thrown downward by this top plate part with a small slope, but with the help of the almost inverted V-shaped slope of this rear plate part 16a, the soil moves downward while facing left and right. It was decided that it would be thrown out, and the trench excavation body 12゜1
It is provided so that it can be emitted to the left and right outside of 2, and the groove digging claw 1
A cover 18 is provided to cover the rear of the groove digging claws 13... to cover the soil remaining at the bottom of the groove 17 dug and formed by the groove digging claws 13...
It is configured so that it is pushed forward by.

When backfilling the ±19 areas dug up on the left and right sides of the groove 17, as shown in FIG.
A mounting plate 23 is fixed on the inside of the left and right backfill spiral bodies 22.22 arranged and fixed on the pipe shaft 21, and the inner plate 23a of this mounting plate 23 is attached to the mounting seat 9b of the trench rotor cylinder shaft 9. By screwing the mounting bolts 24, which are matched and inserted into the mounting plate 23, into the mounting bolt holes 9C, the grooved rotor cylindrical shaft 9
The structure is such that the backfill spiral body 22 is attached to the backfill spiral body 22.

Note that the left and right outer ends of the grooving rotor cylindrical shaft 9 are covered with lids 25 fitted thereto.

Further, in FIG. 2, reference numeral 26 is a sprocket wheel fitted onto the rotary shaft 5, and a drive chino 27 that is wound around this sprocket foil 26 is attached to a bevel (not shown) provided on the upper part of the drive chino case 4. It is rotationally driven by the PTO shaft of the power agricultural machine 1 via a transmission mechanism.

When carrying out trench digging work, align the mounting plates 12b of the trenching body 12 with the mounting seats 9b of the left and right trenching rotor cylindrical shafts 9, and screw the mounting bolts 15 into the mounting bolt holes 9c. By attaching the grooving body 12 to the grooving rotor cylindrical shaft 9, the internal gears 9c, 9c that mesh with the drive gears 11, 11 are connected to the grooving rotor cylindrical shaft 9. This means that the groove digging body 12 integrated with the groove digging body 9 is rotationally driven.

The groove digging bodies 12, 12, which are eccentric in a large character shape when viewed from the front with respect to the rotary shaft 5, are dug up by the groove digging claws 13 without leaving even the lower part of the driving chino case 4. A groove 17 will be excavated below the left and right groove digging bodies 12° 12, and the soil dug up by the groove digging claws 13 will be removed from the guide plate 1 covering the upper and front sides.
6.16, the direction is changed to the rear and left and right directions as described above, and the soil is guided to the left and right sides of the groove 17 and deposited, and the groove 17 is excavated with no remaining soil by the rear cover 18.

In addition, in order to inject, for example, fertilizer into the trench 17 excavated in this way and then backfill it, use the trench digging body 12.12 described above.
are removed from the groove rotor cylinder shafts 9, 9 together with the mounting bolts 15..., and the backfill spiral bodies 21, 21 are attached to the mounting seats 9b,
9b using the mounting bolts 24..., the grooving spiral bodies 12, 12 are attached to the grooving rotor cylindrical shafts 9, 9, and the rotation of the rotary shaft 5 causes the grooving spiral bodies 12. 12 can backfill into the groove 17 by scraping the left and right sides of the groove 17 inwardly by ±19.19.

The excavated soil guide device in the rotary trench excavator according to this invention is constructed as described above, and includes the guide plate 16,
16 is formed with a sufficient front and back length to cover the upper front and rear of the groove digging claws 13..., so all the dug up soil will be guided by the guide plates 16°16.
First, it collides with the top plate part of the front plate part 16b which has a large inclination and is changed to the rear direction, and then it collides with the top plate part of the rear plate part 16a which has a small inclination, causing the rear plate part 16a to tilt in a substantially inverted V-shape. The soil is blown downward in the left and right direction and is deposited on the left and right sides of the groove 17 without returning to it, making it suitable as an excavated soil guide plate for a rotary type trench excavator that generates a large amount of excavated soil. It became something.

[Brief explanation of drawings]

Fig. 1 is a side view showing one embodiment of this invention, Fig. 2 is a vertical cross-sectional rear view of the main part with the trench excavator installed, and Fig. 3 is a partial longitudinal cross-sectional view showing the backfill spiral body installed. It is a rear view. Explanation of symbols, 1...Power agricultural machine, 2...Elevating mechanism, 3...Ditching machine, 4...Drive cheno case, 5...・Rotary axis, 6,10--
-----Bearing, 7, 9b...Mounting seat, 8
...Fixed shaft, 8a...Inner mounting seat, 8
bt9a...Cylinder part, 9...Trenching rotor cylinder shaft, 9c...Mounting bolt hole, 9d...
・Internal gear, 11... Drive gear, 12...
... Grooving body, 12a*23...Mounting plate, 12c
...Claw mounting seat, 13... Grooving claw, 14
．． 15.24...Mounting bolt, 15...
...Guidance plate, 16a... Rear plate part, 16b...
...Front plate part, 16c... Rear, 17...
...Groove, 18...Rear cover, 19...
・Soil, 20... Backfill nails, 21...
Pipe shaft, 22... Backfill spiral body, 25...
... Lid, 26 ... Sprocket foil, 2
7... Drive chino, C... Shaft center, D.
...Cylinder core, P...Intersection.

Claims (1)

[Scope of utility model registration request] Rotary shafts are provided protruding from the left and right sides of the lower part of the drive chain case, and the groove rotor cylinder shafts, each of which has a recessed cylinder core when viewed from the front, are rotationally driven by the rotary shafts. In order to guide the soil dug up by the trenching claws to the left and right of the trench, a guide plate is provided which is approximately in the shape of an inverted hole when viewed from the front. In the rotary trench excavator, the guide plate has a sufficient front and rear length to cover the front and rear areas above the trench claw, and has a top plate portion that is inclined upwardly at the rear when viewed from the side. It has a front plate part and a rear plate part with a small slope,
An excavated soil guide device for a rotary type trench excavator, which is provided to guide soil dug up by a trenching claw backward in the rotational direction of the upper trenching claw by the front and rear top plate portions.