JP3388376B2 - Trench machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a device for excavating a ditch in a paddy field or a field, which is mounted on the rear part of a tractor or the like.
The present invention relates to a groove excavator having a rotary excavating blade and a groove finishing plate.

[0002]

2. Description of the Related Art A trench excavator generally has a rotary excavating blade and is mounted on a rear portion of a tractor. The rotary force of the rotary excavating blade is transmitted from a PTO shaft of the tractor to a universal joint via a transmission shaft. Was there. For example, the groove excavator described in Japanese Utility Model Publication No. 6-19651 by the same applicant is driven to rotate, and the groove is formed by being driven to rotate with a transmission shaft arranged on the tractor so as to become lower as the distance from the tractor increases. A rotary drilling blade for digging can be attached,
A trench digging machine, comprising: a ground plane; and a rotating shaft that is attached so as to be inclined with respect to the transmission shaft and is rotated by the transmission shaft. Therefore,
With that configuration, when the transmission shaft rotates, the rotation shaft to which the rotary drilling blade is attached rotates. The rotation axis is the transmission axis,
Since it is attached at an angle, the operation is convenient and the degree of freedom of the installation angle of the rotating shaft with respect to the ground plane is large. or,
Since the rotation axis of the rotary drilling blade is tilted with respect to the ground plane, the rotary drilling blade is tilted and rotated with respect to the ground plane.
Therefore, it is disclosed that the excavated and discharged soil is less likely to be spread and fall into pieces at a place appropriately separated from the page (2) groove due to the centrifugal force, and to become a fill. A configuration is described in which a finishing plate is provided behind the excavating blade of the ditching machine to shape and finish the groove width and the groove bottom.

[0003]

In the above-mentioned conventional trench digging machine, since the groove finishing plate is close to the ground surface, it gradually reaches a predetermined depth while advancing at the start of excavation. There was a problem in that the mileage required to reach the depth of was left uncorrected manually after the work.

[0004]

SUMMARY OF THE INVENTION The present invention provides a groove excavator having a rotary excavating blade for excavating a groove by rotationally driving,
The groove finishing plate is arranged close to the rear part of the rotary excavating blade, and the groove finishing plate is provided with a rotation link so that the groove finishing plate can be folded. Solve the problem.

[0005]

The groove finishing plate is arranged close to the rear portion of the rotary excavating blade, and the groove finishing plate is provided with a rotary link so that it can be folded, so that the operator can sit on the tractor or the like. , The string finishing plate is folded upward by instructing the rotation link with a string or the like, the soil is excavated at the excavating portion, and when the predetermined depth is reached, the groove finishing plate is folded back to proceed. Therefore, since a predetermined depth is reached from the work starting point, there is no need for artificial correction work for post work. Further, since the groove finishing reaction force is used as the means for compressing the rotary link in the state where the groove finishing plate is installed, the groove shaping action is achieved only by returning the finishing plate to the installed state via the link means.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention is shown in FIG. 1 showing the front of a groove excavator, FIG. 2 showing the same side surface, FIG. 3 showing a perspective view of the groove finishing plate, and link explanation of the groove finishing plate. Will be described with reference to the fourth page (3) in FIG.

The trenching machine 1 is mounted on a tractor (not shown) by a mounting frame 2 via a top bracket 3 and a lower pin 4. A gear box 5 is connected to the PTO shaft of the tractor via a universal joint. Reference numeral 6 is an input shaft of the gear box 5. The gear box 25 and the base portion of the pipe frame 10 connected to the gear box 25 are supported by the mounting frame 2, and the input shaft 5 rotationally drives the excavating blade 8 via a transmission means incorporated in the pipe frame 10.

The pipe frame 10 is constructed substantially at right angles to the direction of travel of the trench machine 1. Reference numeral 9 denotes a case which is provided at the lower end of the pipe frame 10 and supports the rotary shaft 21.
1 is provided with an appropriate number of digging blades 8. Reference numeral 12 is a guide cover that guides the soil discharged by the rotary excavating blade 8 in one direction, and 11 is a groove finishing plate, which is located close to the rear portion of the excavating blade 8 in the traveling direction of the groove excavator 1. The groove width and groove bottom are arranged.

The horizontal frame 7 is an auxiliary frame having one end fixed to the pipe frame 10 and horizontally mounted around the excavation portion, and supports the guide cover 12 and the groove finishing plate 11 described above.

Next, the mechanism for supporting and rotating the groove finishing plate 11 will be described with reference to FIGS. 3 and 4. An upper bracket of the groove finishing plate 11 is rotatably supported by a horizontal pin 15 at the rear end of the horizontal frame 7, and one bracket projects to form an extension bracket 13. Reference numeral 17 denotes a V-shaped crank bar, the lower end of which is supported by a support pin 16. The string 18 is connected to one end of the crank bar 17, one end of the link rod 14 is connected to the other end, and the other end of the link rod 14 is connected to the extension bracket 13 described above.

FIG. 4 is an explanatory view of the link of the groove finishing plate 11. When the groove finishing plate is installed, when the groove shaping action acts as a reaction force (F), the lateral pin 15 is used as a fulcrum and the fulcrum is crossed. The compression force (f) acts on the link rod 14 of the page (4), and the crank bar 1
7 is brought into contact with and fixed to the stopper 19 to finish the groove.

At the start of excavation of a drainage ditch of a paddy field, the operator pulls the string 18 to rotate the crank bar 17 while sitting on the tractor, and moves the groove finishing plate 11 to the upper rear part through the link rod 14. Fold. At this time, the coil spring 20
Supports the groove finishing plate 11 above the fulcrum of the support pin 16.

[0013]

As described above, since the groove finishing plate can be easily folded as desired, the predetermined groove depth is reached from the starting point of excavation, and the correction of post-work is minimized. And efficient.

[Brief description of drawings]

[Figure 1] Front view

[Figure 2] Side view

FIG. 3 is a perspective view of a groove finishing plate.

FIG. 4 is an explanatory view of a link of the groove finishing plate.

[Explanation of symbols]

1 ditcher 2 mounting frame 3 top bracket 4 lower pin 5 gearbox 6 input shaft 7 horizontal frame 8 drilling blades 9 cases 10 pipe frame Page (5) 11 Groove finishing plate 12 Information cover 13 Extension bracket 14 Link Rod 15 horizontal pins 16 Support pins 17 crank bars 18 String 19 stopper 20 coil spring 21 rotation axis 22 shoe

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References: 62-60655 (JP, U): 60-6094002 (JP, U): Kohei Hei 6-19651 (JP, Y2) (58) Field (Int.Cl. ⁷ , DB name) E02F 5/08-5/10 E02F 5/02 A01B 33/02

Claims (2)

(57) [Claims] 1. A groove excavator having a rotary excavating blade for excavating a groove by rotationally driving, wherein a groove finishing plate is disposed close to a rear portion of the rotary excavating blade, and a rotary link is provided on the groove finishing plate. A groove digging machine characterized by being provided with a foldable structure. 2. The groove digging machine according to claim 1, wherein the groove finishing reaction force is used as a means for compressing the rotary link with the groove finishing plate installed.