JPS5921561B2 - plow equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plow device, and more particularly to a multiple type plow device.

Plow equipment is used for tilling soil by being towed by a tractor, and the simplest type is one with only one plow unit attached to the frame.
In a plow apparatus equipped with two or three plow units to improve work efficiency, the entire plow apparatus extends to the rear of the tractor due to its structure.

In other words, the plow unit uses a mold plate to turn the buried soil plowed in one direction (to the right in the direction of work progress), so
It is necessary to secure a space for reversing the embankment soil on the right side of the plow unit, and for this reason, multiple plow units are not lined up on the same straight line along the working width direction.

Therefore, the mounting arrangement of the plow units is such that each plow unit is installed in order from the end along a line that extends diagonally to the rear of the tractor, and the overall length is approximately the same as when several plow units are arranged in a row. ing.

When plowing (cultivation work) is performed using such a plow, there is no problem during the work, but if the plow is too long backwards when changing the direction of work on the headland of the field, the tractor will not be able to move. It is difficult to lift, and furthermore, because a large turning radius is required, the width of the headland is also large, and the proportion of uncultivated area in the field area is relatively large.
There was a problem in that it took a lot of time to plow the headland as post-work.

Such a problem is caused by the fact that the plow units in the plow device are arranged not in a direction perpendicular to the working width direction (but in a form that extends diagonally rearward).

Therefore, the problem can be solved by arranging the plow units in a straight line perpendicular to the width direction of the plow, but this is not possible due to the structure of the plow device.

Therefore, in this invention, the plow units constituting the plow device are pulled toward the tractor side only during circular movement on the headland, and are arranged on the same straight line perpendicular to the working width direction, thereby increasing the area of the headland. It is characterized by being able to be made small.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A plow apparatus embodying the present invention will be described below with reference to the accompanying drawings.

In the figure, reference numeral 1 indicates a tractor, which is equipped with a three-point hit mechanism constituted by a lower link 11 and a top link 12 at its rear end.

The plow device 2 attached to the tractor 1 has the following configuration.

That is, a horizontal frame 23 is fixed to a cross shaft 22 having lower link mounting pins 21 at both ends, and a strut 24 for mounting the top link 12 is erected on this horizontal frame 23. A mounting seat 24a for the top link 12 is formed in (.

It extends in a direction substantially perpendicular to the horizontal frame 23 and on the opposite side of the tractor, and extends in length from the rightmost side (
The installation shown below has three frames 25,
The beam of the plow unit 26 is attached to each of the mounting frames 25 via mounting brackets 26a, and the rightmost mounting bracket 26a is fixed to the mounting frame 25, while the other two mounting brackets 26a are It is in a state where it can move along the mounting frame 25.

Therefore, the mounting bracket 26a has a rectangular cross section, and is shaped like a square pipe that does not rotate relative to the mounting frame 25 and is only allowed to move.

The rear end portion of the mounting frame 25 is reinforced by a rear frame 27 that is diagonal to the working width direction (tractor traveling direction).

Among the mounting brackets 26a attached to each mounting frame 25, the mounting bracket on the right side of the first position is
A rotating arm 32 pivotally attached to a pivot 31 provided on each mounting bracket 26a extends along the rear side of a pin 33 provided upright on each mounting bracket 26a, and is connected to one end of a hydraulic cylinder 34 on the side opposite to the pivot for movement. It constitutes Unit 3.

The piston rod 34a of the hydraulic cylinder 34 is pivotally connected to the side of the horizontal frame 23, and is connected to an oil pump (not shown).
It is designed to be able to contract using pressure oil from the inside.

Next, a plowing operation using the plow apparatus according to the present invention will be explained.

First, during plowing work, the hydraulic cylinder 3
When each plow unit 26 is grounded on the field and towed by a tractor is started with the plow unit 26 in the free operating state, each plow unit will move against the mounting frame 2 due to the resistance received by the work.
5 in the opposite direction of movement until it hits the diagonal frame 27.

By proceeding in this state, plowing can be performed in the same way as with conventional plowing equipment.

When the headland of the field is reached, the hydraulic cylinder 34 is contracted by the drive of the oil pump, and the rotary arm 32
is rotated around the pivot 31.

Since the rotating arm 32 is in contact with the pin 33 of the mounting bracket 26a which is movably attached to the mounting frame 25, the rotating arm 32 moves the mounting bracket 26a together with the pin 33 by rotational movement.
The plow unit 26 is moved along the mounting frame 25, and eventually the plow unit 26 attached to the mounting bracket 26a is moved to draw it closer to the tractor 1.

Therefore, by arranging the rightmost plow unit 26 in Fig. 1 and other plow units in the same straight line perpendicular to the working direction and then lifting them up, the problem occurred because each plow unit was arranged diagonally. Headland enlargement is made smaller as in the case of a single plow unit.

In the above description, a three-unit plow device was described, but the present invention can be applied to any plow device with two or more units, and is particularly effective in a three-unit or more plow unit.

Furthermore, although one end of the rotary arm 32 has been shown to be pivotable so that it can rotate around the pivot shaft 31 of the outermost mounting bracket (26a), one end of the diagonal frame 27 is extended, and the pivot shaft 31 is attached to this. In short, the pivot point of the rotary arm 32 may be any position that allows each plow unit to come closest to the tractor.

Furthermore, as shown in FIG. 3, in the case of a triple plow device, a rotating arm 32 is attached to the central mounting bracket via a pivot 31', and a hydraulic cylinder is used to move the arrow as shown in the arrow around this pivot 31'. The plow units on both sides may be rotated in a direction such that the plow units on both sides are aligned in line with that in the center.

In this case, during plowing work, the plow unit on one side tends to move toward the tractor side due to work resistance, so it is preferable to provide some kind of locking device, such as a hydraulic cylinder that constantly applies pressure.

As is clear from the above description, the plow device according to the present invention has a plow unit movably attached to a mounting frame extending rearward from a horizontal frame, which is one of the front frames, and a rotary arm rotated by a hydraulic cylinder. Since a moving mechanism is provided, all plow units can be arranged in the working width direction on the headland of the field and pulled toward the tractor side, thereby reducing the width of the headland and contributing to improving the efficiency of plowing work. can do.

[Brief explanation of drawings]

The accompanying drawings show embodiments of the invention, with FIG. 1 being a plan view;
FIG. 2 is a side view of the same, and FIG. 3 is a plan view showing another embodiment. 1...Tractor, 11...Lower link, 12...Top link, 2...Plow device, 21...Lower link mounting pin , 22・
Song/Cross shaft, 23... Horizontal frame, 2
4...Strut, 25...Mounting frame, 26...Plow unit, 26a...
...Mounting bracket, 27...Oblique frame, 3...Moving unit, 31...Pivot, 32...Rotating arm, 33... ...Pin, 34...Hydraulic cylinder, 34a...
piston rondo.

Claims (1)

[Claims] 1. A front frame consisting of a cross shaft having a strut with a lower link mounting pin and a top link mounting seat, a plurality of mounting frames extending rearward from this front frame along the direction of work progress, and this frame. A plow comprising: a plow unit movably attached to a plow; and a moving unit that pulls the plow unit toward a tractor, and is configured to keep the radius of rotation in a headland small during plowing work. Device.