JP3383868B2 - Digging machine for root vegetables - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long root vegetable, for example, a trench for excavating a long thigh. 2. Description of the Related Art Japanese Utility Model Application Laid-Open No. 4-65021 or Utility Model Registration No. 2514105, which is the same applicant, is known as a root vegetable digging trencher for a long thigh. These are intended to make the extraction operation lighter without damaging the long skin. [0003] In the above-mentioned trencher, the excavated body excavated to the lowest end of the root vegetable such as a long one having a long diameter and a flat belt is wound under the root part to float the root vegetable. However, when the amount of soil is large, the soil may not rotate and may be dragged around the soil in a long growing season to exert a compressing action. At this time, there was a problem that abrasion was generated, for example, for a long time. Therefore, it is conceivable to rotate the flat belt at the same speed as the working speed of the tractor, but there is a drawback that the equipment such as the conventional drive motor becomes large and heavy in excavated soil. [0004] In order to solve the above-mentioned problems, in order to solve the above-mentioned problem, a soil is disposed at a side of a base frame attached to a tractor and root vegetables attached to the base frame and excavated to a predetermined depth. A digging body with a flat belt wrapped around rollers and a main shaft at the rear of the digging means, and a digging body installed at an angle in the direction of travel of the tractor. A support bar fixed to the frame and having a lower end to fix the excavated body, an input shaft rotated by the driving force of the tractor PTO shaft, and a rotation installed at the rear of the base frame and transmitted from the input shaft to move up and down with respect to the base frame. A swinging motion converting mechanism that swings in a direction, and a main shaft that drives the flat belt of the digging body is provided with an intermittent drive converting mechanism, and the main shaft is connected to a connecting bar driven by the swinging motion converting mechanism. Digging root vegetables Machine. When the excavator of the present invention is introduced into a field and excavation is started, both extremities of a long piece are excavated to the lower end, and excavation is performed such that a support bar moves behind the excavated groove. She is holding the body. A connecting bar that vibrates up and down behind the support bar is disposed at the rear end of the excavating body, intermittently drives the flat belt, and the grown long one is forcibly lifted by the flat belt together with the surrounding soil. Therefore, since the long one grows up in the process of pulling out, there is little generation of compressive action with the surrounding soil, and the pulling out is performed with almost no occurrence of scratches.
Further, there is no driving source for driving the flat belt of the excavated body in the soil, so that there is no specially protruding driving source, so that no traction resistance is added. An embodiment will be described with reference to the accompanying drawings. FIG.
FIG. 2 is a perspective view of the embodiment of the present invention, FIG. 2 is a plan view of the excavated body, FIG. 3 is a sectional view of a flat belt driving unit, and FIG. 4 is an explanatory view of a one-way clutch. FIG. 1 is a perspective view of a preferred embodiment of the present invention.
Is arranged. Reference numeral 3 denotes an input shaft (not shown) for the tractor P
The eccentric shaft 11 at the rear end is rotated via the counter shaft 10 by the pulleys 8 and 8 'between the upper portions. Reference numeral 6 denotes a boom which is fixed to the outside of the base frame 4 and is provided with an appropriate tension member to which a drilling chain 7 is mounted. 2
Is a mast stay, and the base is pivotally connected to the base frame 4, the top of the top forms the top hitch 1, and the back is connected to one end of the hydraulic cylinder 9. The other end of the hydraulic cylinder 9 is fixed to a bracket projecting from the rear portion of the base frame 4 and the mounting angle of the mast stay 2 changes when the hydraulic cylinder 9 expands and contracts. Reference numeral 5 denotes a lower pin, which is configured to be movable laterally with respect to the base frame. Reference numeral 14 denotes a support bar, the upper part of which is fixed to a base frame.
The lower end is fixed to the front side of the dug body 16. Reference numeral 15 denotes a connecting bar, the upper part of which is pivotally connected to the eccentric shaft 11, and the lower end of which is a swing arm 23 disposed on the rear side of the excavating body 16.
Connect to Reference numeral 17 denotes a blade portion having a planar mountain shape and constituting a front portion of the excavated body. FIG. 2 is a plan view of the digging body. The side of the digging body 16 is constituted by a side plate 21, in which a plurality of rollers are arranged and a flat belt 19 is wound. Reference numeral 14 denotes a support bar, which grips and fixes the front of the side plate 21. Reference numeral 22 denotes a groove width excavated by the excavation chain 7 described above. Reference numeral 18 denotes a main shaft for driving the flat belt 19, which intermittently drives the swing motion of the swing arm 23. FIG. 3 shows a cross section of the flat belt driving section. The drive shaft 20 is connected to the main shaft 18 via a one-way clutch 24. The flat belt 19 is wound around the drive roller 20 and other rollers. A swing arm 23 pivotally attached to the left and right connection bars 15 that vibrates up and down is fixed to the main shaft 18. The inner race of the one-way clutch 24 is keyed to the main shaft. The one-way clutch shown in FIG. 4 is a conventionally known one, which has a cam body 27 supported by a spring between an inner ring 26 and an outer ring 25, and drives the flat belt 19 in one direction. When changing the intermittent drive speed,
It is preferable to change the amount of eccentricity of the eccentric shaft 11. According to the above-described structure, when a long material having a long diameter is excavated and floated together with the surrounding soil, the compressing action is eliminated and the material is smoothly pulled out.

[Brief description of the drawings] FIG. 1 is a perspective view embodying the present invention. FIG. 2 is a plan view of a digging body. FIG. 3 is a sectional view of a flat belt driving unit. FIG. 4 is an explanatory view of a one-way clutch. [Explanation of symbols] 1 Top hitch 2 mustasty 3 Input shaft 4 base frame 5 Lower pin 6 Boom 7 Drilling chain 8, 8 'pulley 9 Hydraulic cylinder 10 Counter axis 11 Eccentric shaft 12 Missions 13 Drive sprocket 14 Support bar 15 Connecting bar 16 Digging body 17 Blade 18 spindle 19 flat belt 20 rollers 21 Side plate 22 digging groove width 23 Swing arm 24 One-way clutch 25 Outer ring 26 Inner ring 27 Cam body

Claims (1)

(57) [Claims 1] A base frame attached to a tractor, means for excavating soil to a predetermined depth, which is disposed on a side of root vegetables attached to the base frame and dug out, At the rear, a flat belt is wrapped around the roller and main shaft, and a digging body is installed at an angle to the direction of travel of the tractor. A support bar for fixing the body, an input shaft rotated by the driving force of the tractor PTO shaft,
Equipped with a swinging motion conversion mechanism that is installed at the rear of the base frame and swings up and down the rotation transmitted from the input shaft with respect to the base frame, and an intermittent drive conversion mechanism on the main shaft that drives the flat belt of the digging body, An excavator for root vegetables and the like, wherein the main shaft is connected to a connecting bar driven by a swinging motion conversion mechanism.