JPH051201Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a plow device towed by a tractor, and more specifically, in a plow device for pulling ditches, a plow is compacted into a ditch through which one side of the tractor wheel passes. The present invention relates to a plow device equipped with a subsoiler for crushing subsoil.

[Conventional technology]

When plowing is carried out by a wheel-type tractor, there is a plow device for furrowing that runs with one side of the tractor wheel in the ditch, and a plow device for hill-pulling that runs in a field where neither left nor right wheels of the tractor wheel are in a ditch. There is a plow device.

The former type of plow device for pulling ditches has excellent straightness with no meandering because the tractor wheels run along the ditch, but in the case of the latter type of plow device for pulling hills, the tractor wheels run along the field. Due to the relationship, it has the disadvantage of lacking straightness.

Therefore, the present applicant has previously developed a plow device for hill pulling as described in Japanese Patent Application Laid-Open No. 55-37175, as a means to eliminate the drawback of the reduced straightness. We proposed an auxiliary plow attached to the rear position on the uncultivated land side to shallowly cut and reverse the guide groove through which one side of the tractor wheel passes in the next step.

According to this prior art, straight running performance is improved because one side of the tractor wheel passes through a shallowly cut and reversed guide groove. Since the main bottom plow group is used to plow the entire working width of the field, including the guide groove, to the required plowing depth, it is also possible to eliminate the formation of hard plows caused by the pressure of the tractor wheels.

[The problem that the idea aims to solve]

By the way, in the case of a ditch pulling plow device, since one side of the tractor wheel is dropped into a ditch for running, a hard tread plate is formed at the bottom of the ditch by compaction of the tractor wheel. In particular, when a tractor drives on an incline with one wheel dropped into a ditch, the center of gravity of the tractor acts on the ditch side.
The weight of the tractor increases the tread pressure of the wheels on the ditch side, and the hard tread plate formed at the bottom of the ditch becomes hard, which impedes water permeability and air permeability, inhibiting soil activation. However, there was a problem in that it led to a decline in soil fertility.

It is known that plow equipment is equipped with a sub-soil plow on each bottom for the purpose of crushing the formation of hard disks, but the plow bottom plate formed after the bottom is moved cannot be broken by the sub-soil plow. However, it is not possible to crush the hard platen in the groove formed by the treading force of the tractor wheels.

In view of the above-mentioned problems, the present invention is designed to crush the tread hard plate formed at the bottom of a ditch by the tread pressure of a tractor wheel, especially in a ditch plowing device.
Another object of the present invention is to provide a plow device equipped with a device that can move the bottom in the working width direction.

[Means to solve the problem]

To achieve this objective, the present invention provides a plow device that is attached to the rear part of a tractor via a three-point support linkage mechanism and towed, and the plow device is attached to the front part of the device to carry out tasks perpendicular to the towing direction. The plow frame includes a front frame arranged in the width direction, a plow frame whose front end is supported by the front frame and whose rear end side is arranged diagonally toward one rear side, and a bottom attached to the plow frame. ,
In the above-mentioned ditch pulling plow device that runs with one side of the tractor wheel placed in the scree reversal side by the bottom, the above-mentioned front frame is provided with a slide frame that can be slid in the working width direction by a feed screw and a rotating handle. The front end of the plow frame is fixed to the slide frame so that the bottom can be moved and adjusted in the working width direction, and a bearing sleeve with a fixing means is provided at the end of the front frame on the plow reversal side, and this bearing sleeve has a length in the vertical direction. The subsoiler is characterized in that the arm of the adjustable subsoiler is slidably inserted so that the subsoiler can be moved and adjusted along the working width direction.

[Effect]

In such a configuration, the bottom is moved and adjusted in the working width direction according to the size of the tractor to which the plow device is attached, the wheel spacing, etc., and appropriate plowing is performed.

In addition, by using a tractor wheel that plows while driving with one side of the wheel in a groove, it is possible to select a suitable position for crushing the hard disk formed by treading inside the groove with a chisel.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the figure, reference numeral 11 indicates a front frame of a plow device that is attached to the rear of a tractor via a well-known three-point support link mechanism. It is arranged in such a way that This front frame 11 has a slide frame 12 that can move along the direction of the frame.
is installed. This slide frame 12
The movement is performed by the screw feeding action of a screw receiver 12a attached to the slide frame 12 and a feed screw 13 screwed into the screw receiver 12a.

A front end of a plow frame 14 extending rearward and diagonally to one side is fixed to this slide frame 12, and two bottoms 16 are attached to this plow frame 14 via beams 15, so-called two bottoms 16. It forms a continuous plow device.

A pair of lower link plates 17 that are vertically fixed downward are attached to both ends of the front frame 11, and a lower link of a three-point support link mechanism is attached to the lower end of each lower link plate 17. Link pin 17 to which is connected
a and 17b are formed respectively.

Further, the end of the feed screw 13 is rotatably attached to the upper end of the lower link plate 17 on the side where the bottom 16 is inverted, of the pair of lower link plates 17, and the rotary handle 1
3a allows for rotation.

And the front frame 11 on the side where the debris is reversed
A bearing sleeve 18 is provided at the end of the
The end of the support shaft 21 constituting the subsoiler 20 is fitted into the bearing sleeve 18, and by aligning the adjustment hole 18a drilled in the bearing sleeve 18 and the support shaft 21 and inserting the coupling pin 22, the support shaft 21 is inserted into the bearing sleeve 18.
The protrusion length can be changed and selected. A subsoiler 20 is attached to the end of this support shaft 21.
A vertical beam 23 is fixed, and a chisel 24 is fixed to the lower end of the beam 23 to constitute the subsoiler 20.

The vertical beam 23 of the subsoiler 20 is configured such that its intermediate portion is connected by two bolts 25, and the position of the chisel 24 can be selected up or down depending on the depth of the hard disk to be crushed. In addition, the relay connection using the two bolts 25 described above is such that when the chisel 24 collides with a stone in the ground and receives a large impact while the chisel 24 is in motion, one of the bolts 25 is sheared and the chisel 24 jumps backward. It also serves as a safety mechanism that can eliminate impact loads.

Note that in the figure, the symbol R indicates a ditch, and the symbol T indicates a rear wheel of the tractor.

Next, operations using the plow device according to the present invention will be explained.

First, the chisel 24 is
The length of the vertical beam 23 is determined so that the position of the bottom 16 is adjusted to a predetermined state, and the position of the bottom 16 is determined based on the left-right distance of the lower link, the distance between the rear wheels of the tractor, etc. To select the position of the bottom 16, the slide frame 12 is moved along the front frame 11 by driving the feed screw 13 by rotating the crank handle 13a, thereby moving the bottom 16 together with the plow frame 14.

Then, the subsoiler 20 is moved and adjusted in the working width direction so that it is at a position corresponding to the rubble groove R, and then fixed. This operation is performed by moving the support shaft 21 relative to the bearing sleeve 18, selecting the adjustment hole 18a, and fixing it by pushing the pin 22.

The plowing work is carried out in a trench pulling mode in which one side of the rear wheel T of the tractor is placed in the trench R.

When performing this plowing work, as the tractor rear wheel T travels in the scree groove R on one side, a hard tread plate is formed at the bottom of the scree groove R by compaction by the rear wheel. Immediately thereafter, the lower end chisel 24 of the subsoiler 20 advances while crushing the subsoil corresponding to the groove bottom of the groove R, thereby causing the above-mentioned tread hard disk to expand and soften.

Further, when performing work, the subsoiler 20 equipped with a chisel 24 at the lower end is attached to one end of the front frame 11 arranged in the working width direction at the front of the equipment, and is placed in the front position prior to the turning of debris by the bottom 16. Since the subsoiler 20 is installed, it is possible to monitor the subsoiler 20 during work without being hidden by the gravel that is turned over by the bottom 16.
collides with each other, and as a result, for example, one bolt 25 of an intermediate connection point (safety point) between two bolts 25 provided on the vertical beam 15 is sheared, causing the chisel 24 to jump backwards and not function properly. When this occurs, the operator can immediately detect this condition and take measures to replace the sheared bolt 25 so that the plowing work can be performed normally.

[Effect of idea]

As is clear from the above explanation, according to the plow device according to the present invention, (1) a slide frame that is slidable in the working width direction by a feed screw and a rotating handle is provided on the front frame, and the above-mentioned plow frame is attached to the slide frame; Since the front end of the plowing machine is fixed and the bottom can be adjusted in the working width direction, the bottom can be moved to an appropriate working position depending on the size of the tractor, wheel spacing, etc., and appropriate plowing work can be performed. I can do it. Additionally, offset work can be carried out as needed.

(2) A bearing sleeve with a fixing means is provided at the end of the front frame on the side where the debris is reversed, and the arm of the subsoiler whose length is adjustable in the vertical direction is slidably inserted into this bearing sleeve, and the subsoiler is moved along the working width direction. Since the movement of the subsoiler can be adjusted, the subsoiler can be reliably made to correspond to the traveling locus of the tractor wheels regardless of the movement of the bottom, and the hard platen treaded by the tractor wheels can be reliably crushed.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the plow apparatus according to the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a side view thereof. 11...Front frame, 12...Slide frame, 12a...Screw receiver, 13...Feed screw, 13a...Rotary handle, 14...Plow frame, 15...Beam, 16...Bottom, 17
... Lower link plate, 17a, 17b ... Link pin, 18 ... Bearing sleeve, 18a ... Adjustment hole, 20 ... Subsoiler, 21 ... Support shaft, 22 ... Pin, 23 ... Vertical beam, 24 ...
...Chisel, 25...volts.

Claims (1)

[Claims for Utility Model Registration] A plow device that is attached to the rear part of a tractor via a three-point support link mechanism and towed, the plow device having a plow device attached to the front part of the device in the working width direction perpendicular to the towing direction. The front frame is placed towards the
It has a plow frame whose front end is supported by the front frame and whose rear end side is disposed diagonally toward one rear side, and a bottom attached to the plow frame, and the tractor is installed in the ditch on the side where the gravel is reversed by the bottom. In a ditch pulling plow device that runs with one side of the wheel inserted, the front frame is provided with a slide frame that can be slid in the working width direction by a feed screw and a rotating handle, and the front end of the plow frame is fixed to this slide frame. A bearing sleeve with a fixing means is provided at the end of the front frame on the debris reversing side, and a subsoiler arm whose length can be adjusted in the vertical direction can be slid onto this bearing sleeve. A plow device characterized in that the subsoiler can be fitted and adjusted to move along the working width direction.