JPH0447258Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a trenching work vehicle equipped with a trenching hatchet claw that is rotatably driven around an axis in the lateral direction of the machine body.

[Conventional technology]

In such ditch digging work vehicles, the trench digging machete has conventionally been configured so that the area to be excavated is cut down only by the soil lifting portion of the trench digging machete.

[Problem that the invention attempts to solve]

However, according to the conventional hatchet nail mentioned above, the fourth
As shown in the figure, after the action of the groove digging machete claw 12,
The lower end a of the inner wall sometimes crumbled, resulting in poor finish of the groove.

An object of the present invention is to prevent the collapse of the inner wall while avoiding an increase in the length of the fuselage.

[Means for solving problems]

The characteristic structure of the present invention is that, in the above-mentioned trenching work vehicle, the trenching machete claw is arranged so as to act in advance of the soil raising part and to be located laterally outward of the machine body from the soil raising part. The present invention is characterized in that a soil-cutting blade is provided at the tip of the groove-digging hatchet claw, and its functions and effects are as follows.

[Effect]

That is, in order to prevent the effect of digging down by the earth raising part from reaching the wall portion and causing wall collapse, the cutting plate blade forms a cut before digging down the earth raising part.

By equipping the groove-digging machete with a soil-cutting plate blade, compared to placing a dedicated soil-cutting cutter in front of the groove-digging machete, the distance between the traveling device and the groove-digging machete can be kept small, and the cutting edge can be cut easily. can be formed.

[Effect of idea]

Therefore, the formation of cuts by the cutting board blade makes it difficult for the lower end of the inner wall of the groove to collapse.
Now you can finish the grooves beautifully.

In addition, by keeping the distance between the traveling device and the groove-digging machete claw small, the length of the machine body can be kept as small as possible, making it easy to handle.

〔Example〕

As shown in FIG. 3, an engine 1 is mounted on the front of the aircraft, a pair of left and right running wheels 3 are attached to a transmission case 2 behind the engine 1, and a control handle 4 is connected to the transmission case 2. A trenching case 7 of a trenching device 7 is attached to a support frame 6 connected to the mission case 2 via a hitch 5.
A is attached and the power from the engine 1 is transmitted to the trenching device 7 via the output shaft of the transmission case 2 and the transmission belt 8, thereby constructing a walking-type trenching work vehicle. . In the figure, reference numerals 9 and 9 indicate a pair of left and right ground wheels for maintaining the depth of the groove at a set depth.

To be more specific about the groove digging device 7, as shown in FIGS. 1 and 2, it is rotatable integrally with a drive shaft 10 at the lower end of the groove digging case 7A via a pawl attachment 11 and a mounting bolt 13. A plurality of groove-digging machete claws 12 are attached, and these groove-digging machete claws 12 are rotationally driven around an axis in the lateral direction of the machine body.
The soil raising portion 12A on the tip side digs down the soil at the location where the trench is to be formed and lifts the soil outward from the side of the machine and discharges it. The groove digging hatchet claw 12...the soil raising part 12A is attached to each tip 12a.
The earth-cutting plate blades 14 are welded so as to act in advance of the soil-raising portion 12A and are positioned laterally outward from the earth-raising portion 12A. Dokiri board blade 1 prior to
By forming the cuts 4..., the work can be carried out while preventing the lower end of the inner wall of the groove from collapsing.

[Another example]

In the embodiment described above, the earth-cutting plate blade 14 was attached to the grooving machete claw 12 by welding, but the earth-cutting plate blade 14 may be integrally molded with the grooving machete claw 12.

In addition to the walking type, the ditch digging work vehicle of this invention is
It can also be applied to a passenger type.

[Brief explanation of drawings]

The drawings show an embodiment of the trenching work vehicle according to the present invention, FIG. 1 is a cutaway rear view of the trenching device, FIG. 2 is a side view showing the shape of the trenching machete, and FIG. 3 is the trench digging device. FIG. 3 is a side view of the work vehicle. FIG. 4 is a cutaway rear view of a conventional trench digging device. 12...Ditch digging hatchet claw, 12A...Earth raising part,
12a... Tip part, 14... Soil cutting board blade.

Claims (1)

[Scope of utility model registration request] A trenching work vehicle is provided with a trenching machete claw 12 that is rotatably driven around the axis in the lateral direction of the machine body, and the trenching machete claw 12 acts in advance of the soil raising part 12A, and The earth-cutting blade 14 is placed at the tip 12a of the groove-digging machete claw 12, with the earth-cutting blade 14 being positioned on the outer side of the machine body than the earth-lifting part 12A.
A ditch digging work vehicle in preparation for.