JPS6023209B2 - subsoiler - Google Patents

Description

[Detailed description of the invention] This invention relates to sapsoil that expands and softens soil.

Forcibly rocking the vertical cutting plate back and forth reduces traction resistance and promotes soil expansion and softening, but conventional rocking systems employ crank mechanisms, cam mechanisms, etc. for rotational driving force, making them very noisy and causing a lot of noise.
When overloaded, the vertical cutting plate cannot swing back and forth smoothly, causing the entire device to vibrate.

This invention has taken the following technical measures for the purpose of solving the above-mentioned drawbacks.

That is, between the vertical cutting plate 2 to which the umbrella body 1 is attached to the lower part and the advancing machine frame 4 to which the vertical cutting plate 2 is pivotally mounted 3 so as to be able to swing back and forth, hydraulic oil is automatically adjusted to a predetermined pressure or less. A hydraulic expansion and contraction device 5 is provided that repeatedly expands and contracts by the supply groove or the discharge of this supply V oil supply,
A sub-soiler is constructed by swinging the vertical cutting plate back and forth using this hydraulic expansion and contraction device. An embodiment of this invention will be described based on the drawings.

Reference numeral 4 denotes a advancing machine frame connected to the rear of a tractor (not shown) via a top link 6 and a lower link 7 so that it can be raised and lowered.The rear end has a grounding mechanism 8 whose vertical position can be adjusted freely. On the front side of the mechanism 8, a vertical cutting plate 2 is pivotally attached to the lower end of a fixing member 9 that is a part of the advancing machine frame 4 so as to be swingable in the front and rear directions.

The front edge of the vertical cutting plate 2 is formed into a blade edge, and a writing brush 1 having a predetermined cutting angle is fixed to the lower part.

Reference numeral 10 denotes a piercing tool located at the rear of the umbrella body 1 and connected via chains 11, 11 so as to bridge the upper and lower sides to the left and right.

A hydraulic expansion and contraction device 5 is provided between the advancing machine frame 4 and the vertical cutting plate 2. This hydraulic expansion/contraction device 5 includes a hydraulic cylinder 13 whose one end is pivotally attached 12 to the advancing machine frame 4, and
The sliding rod 14 is inserted into the vertical cutting plate 2 and slides in and out depending on the supply of hydraulic oil.
It is pivoted 14' at the upper end. A pair of scale supply pipes 16 and 17 are connected to the cylinder 13, which are led out from a control valve 15 fixed at a proper position in the machine frame 4.

The control valve 15 transfers hydraulic oil, which is pumped through the joint pipe line 19 by a pump on the tractor side (not shown), to the pipe line 16 side by rotating the switching lever 18 from the rear-leaning position to the forward-leaning position. On the other hand, when the switching lever 18 is switched from the forward tilted position to the rear tilted position, hydraulic oil should be supplied to the pipe line 17 (the passage is switched).

In addition, 20 is a discharge pipe which leads the discharged oil from the pipe 16 or 17 to the tank. The switching point or opening of the switching lever 18 is based on an operating rod 21 provided on the vertical cutting plate {2'.

Contact members 2 are placed at two locations on the tip side of the rod 21 at a predetermined interval.
2 and 23 are provided. Each rear support member 22, 23 is provided so as to be movable and fixed relative to the rod 21. In the middle of the hydraulic oil supply pipe 19 to the control valve 15, the pressure of the hydraulic pond in the hydraulic circuit is allowed to rise to a predetermined pressure.
After that, a relief valve 24 is provided to release excess pressure in order to maintain that pressure. Note that 25 is a flow rate control valve.

In addition, in FIG. 3, a horizontal support frame 26 is provided on the advancing machine frame,
A bracket 27 whose left and right positions can be freely changed is attached to this horizontal support frame 26.
, 27 are provided, and vertically cut plates 2, 2 are attached to these brackets 27, 27, respectively, forming a two-way sub-soiler.

Hydraulic telescopic equipment 5, 5 is provided between the upper end of each bracket 27, 27 and the upper end of the vertical cutting plate 2. The operation of the hydraulic expansion and contraction devices 5, 5 is performed by valves 28, 28 disposed on the left and right sides of the rear end of the advancing machine frame.
is moved in and out by an eccentric cam 30 that moves on the tractor PTO shaft to switch paths. valve 28,
28 and the hydraulic expansion/contraction devices 5, 5 are flexible conduits 31, 3.
Continued by 1... The effect of the above example will be explained.

When a tractor-side pump (not shown) is driven, hydraulic pressure is supplied to the supply pipe 19.

The pressure in the circuit is automatically adjusted to a predetermined pressure by the leaf valve 24. When the switching lever 18 of the control valve 15 is in the rear position, pressure oil is supplied to the pipe line 17, and the sliding rod 14 moves into the cylinder 13 to move the vertical plate 2 around the pivot point 3. Rotate in the direction of arrow C.

During the above operation, the actuating rod 21 moves forward, and the dovetail member 22 abuts the switching lever 18 in the rear forehead position to switch the switching lever forward.

As a result, the flow path of the control valve 15 is switched and pressure oil is supplied to the pipe line 16 side. To supply pressure oil to the pipe 16 side, the sliding rod 14 is pushed out and moved to rotate the vertical cutting plate 2 in the direction of the arrow 20,000.

The switching lever 18 of the control valve 15 is automatically switched to A or ENT to switch the flow path, and the vertical cutting plate 2 follows this and repeatedly moves to C or 2.

If the vertical cutting plate 2 swings back and forth, the machine frame 4 can be moved with less soil resistance.

The container 1 at the lower end of the vertical cutting plate 2 also swells and softens the deep soil while swinging back and forth together with the vertical cutting plate 2.

Incidentally, a drainage culvert is formed by the drilling odor 10 following the empty body 1.

The vertical cutting plate 2 is swung back and forth by the hydraulic expansion/contraction device 5, and the pressure oil is supplied at a predetermined pressure, so that the hydraulic circuit is not damaged due to excessive pressure and the resistance is reduced. Even if the pressure suddenly increases, the pressure will automatically escape and the vertical cutting plate 2 will not be forced to swing.

In addition, by adjusting the flow rate control valve 25, the frequency of the vertical cutting plate 2 can be arbitrarily set, and by changing the position of the saddle contact members 22 and 23 of the operating rod, the vertical cutting plate 2 can be adjusted as desired. .

Since this invention has the above configuration, it has the following technical effects.

That is, the vertical cutting plate is reciprocated by a hydraulic expansion/contraction device, and since the hydraulic oil supplied to this hydraulic expansion/contraction device is automatically adjusted to a predetermined pressure or less, the vertical cutting plate or the lower umbrella body is When soil resistance is suddenly applied to the ground, the pressure in the hydraulic circuit is appropriately reduced and the shaking is suppressed without causing the rocking force to resist the force. I'm not captivated. In addition, since a hydraulic expansion and contraction device is used instead of using a mechanical rocking mechanism such as a crank mechanism or a cam mechanism as described at the beginning, there is less noise.

In addition, when multiple subsoilers are used as in the other embodiment shown in FIG. 3, it is extremely easy to adjust the machine movement of the vertical cutting plate by employing a flexible pipe such as a hydraulic hose.

In this embodiment, a so-called double-acting cylinder device is used, but a configuration may also be adopted in which a vertical cutting plate that is ejected in one direction is swung in the opposite direction by a single-acting cylinder device.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is a side view, Fig. 2 is a partially enlarged view, Fig. 3 is a perspective view showing another embodiment, and Fig. 4 is a partially enlarged view. It is a diagram. In the figure, 1 is a enclosure, 2 is a vertical cutting plate, 3 is a pivot point, 4 is a advancing machine frame, 5 is a hydraulic expansion/contraction device, 13 is a hydraulic cylinder, 14 is a sliding rod, and 15 is a control valve. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1 Supply of hydraulic oil that is automatically adjusted to a predetermined pressure or less between the vertical cutting plate with a plow body attached to the lower part and the advancing machine frame to which the vertical cutting plate is pivotally attached so as to be able to swing back and forth, or the supply of this supplied oil. A subsoiler is provided with a hydraulic expansion/contraction device that repeatedly expands and contracts due to discharge, and the vertical cutting plate is swung back and forth by this hydraulic expansion/contraction device.