JPH0541616Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to an improvement of a trencher for digging long potatoes.

[Conventional technology]

Excavate both sides of the long, grown plants before harvesting.
A device for excavating the underside of a long object by propelling it with a digging blade was developed by the same applicant in 1983.
No. 172515 is known.

[Problem that the idea aims to solve]

The above-mentioned known technique for digging is a method in which long pieces of soil are allowed to slide and float on the upper surface of a tillage board using propulsion. When the tractor slips, the traction resistance increases when the soil is clayey or hard, causing the tractor to slip. In addition, for large plants that have grown, if only the grooves on the upper side are used, the lowest root part of the long plants will not be able to come out when they grow into large plants, and compressive force will be applied to the long plants when they are floated up by the tillage board. There was a problem with the product turning black over time.

[Means to solve the problem]

In order to solve the above-mentioned problem, in a trencher in which a pair of digging chains are arranged at positions corresponding to both sides of a long object, and a digging blade body is installed diagonally in the center, the front side of the digging chain is provided. The digging blade is swingably supported by a support bar located in the excavation groove excavated by the digging chain, and the rear part of the digging blade is connected by a connecting bar that vibrates up and down. The present invention provides a trencher for digging long potatoes that is characterized by vibrating its body.

[Effect]

When the digging trencher of this invention is introduced into the field and digging begins, it excavates both ends of the long material to the bottom, and grips the digging blade so that the support bar runs behind the excavated trench. ing. Behind this support bar, a connecting bar that vibrates vertically supports the rear part of the digging blade and provides slight vibrations. Therefore, the long pieces of soil that slide on the digging blade body slide smoothly, reducing running resistance. In addition, the support bar of the digging blade body is located behind the digging chain so that it does not create any resistance to the progress of the digging chain, and also serves as a groove finishing function to discharge the soil excavated by the digging chain from the groove, contributing to a reduction in traction force. ing.

【Example】

The configuration will be explained based on the drawings in which the present invention is implemented. FIG. 1 is a perspective view of the present invention, in which a transmission 12 is placed on a base frame 4 and drive sprockets 13 are arranged on the left and right sides. Reference numeral 3 designates an input shaft which is not shown but is connected to the PTO shaft of the tractor, and rotates an eccentric shaft 11 at the rear end via a counter shaft 10 by means of pulleys 8 and 8' between the upper parts. 6 is the boom and base frame 4
The excavation chain 7 is fixed to the outside of the excavation chain 7 with an appropriate tension member provided thereon. Reference numeral 2 denotes a mast stay, the base of which is pivotally connected to the base frame 4, the front part of the upper part forms a top hitch 1, and the rear part is connected to one end of a hydraulic cylinder 9. The other end of the hydraulic cylinder 9 is fixed to a bracket protruding from the rear of the base frame 4, and when the hydraulic cylinder 9 expands and contracts, the mounting angle of the mast stay 2 changes. 5 is a lower pin which is configured to be movable laterally with respect to the base frame. Reference numeral 14 denotes a support bar whose upper end is fixed to the base frame and whose lower end is rotatably fixed to the front side of the digging blade body 16. Reference numeral 15 denotes a connecting bar whose upper part is pivotally connected to the eccentric shaft 11 described above, and whose lower end is fixed to the rear part of the digging blade body 16. Reference numeral 17 denotes a blade portion, which has a planar mountain shape and constitutes the front portion of the digging blade body, and vibrates. 2 and 3 show a cross-sectional view and a plan view of the digging blade body 16. FIG. The side part of the digging blade body 16 is constituted by a side plate 21, a plurality of rollers 20 are horizontally suspended, and a flat belt 19 is wound around the side plate 21. Reference numeral 18 denotes a support shaft that spans the left and right support bars 14, and serves as a fulcrum for vibration. The flat belt is made of hard rubber material and is entirely plain. To explain the operation of this embodiment, the tractor
The mission 12 receives input from the PTO, rotates the left and right drive sprockets 13, and moves forward while rotating the excavation chain 7. At the same time, the transmission 12 is connected to the eccentric shaft 11 via a pulley 8' provided on the input shaft 3.
The connecting bar 15, which is pivotally connected to the connecting bar 15, is vibrated up and down.
This vibration is a high-speed minute vibration using the lower end of the support bar 14 as a fulcrum. The grown long yam is completely excavated to the bottom side, and the blade vibrates at a very high speed as it penetrates into the lower part. Accordingly, the digging blade 16 moves forward and floats long pieces of soil, while the bottom of the soil is pressed against the upper surface of the flat belt 19 and moves with the rotation of the belt 19. Therefore, since the soil does not forcefully slide on the upper surface of the digging blade, the reaction force of digging is small.

【effect】

With the above structure, the resistance that would impede the propulsion of the tractor is small, and even when the grown long potatoes are lifted up by the blade, the phenomenon of applying compressive force to the long potatoes themselves is minimized. This made digging work very comfortable.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the present invention. Second
The figure is a sectional view of the digging blade. FIG. 3 is a plan view of the digging blade. 1 is the top hitch, 2 is the mast stay, 3 is the input shaft, 4 is the base frame, 5 is the lower pin, 6 is the boom, 7
is a drilling chain, 8 and 8' are pulleys, 9 is a hydraulic cylinder, 10 is a counter shaft, 11 is an eccentric shaft, 12
1 is a transmission, 13 is a drive sprocket, 14 is a support bar, 15 is a connecting bar, 16 is a digging blade body, 17 is a blade portion, 18 is a support shaft, 19 is a belt, 2
0 is the roller, 21 is the side plate, and 22 is the excavation groove width.

Claims (1)

[Scope of utility model registration request] In an excavation trencher in which a pair of excavation chains are arranged at positions corresponding to both sides of a long object and a diagonally installed excavation blade body is provided in the center, the front part of the excavation blade body is excavated with the excavation chain. The digging blade is swingably supported by a support bar located in the excavation groove, and the rear part of the digging blade is connected by a connecting bar that vibrates up and down, thereby causing the digging blade to vibrate. A trencher for digging long potatoes.