JPS6328996Y2 - - Google Patents

Description

[Detailed description of the invention] The invention relates to a soil stirring device,
In particular, it relates to a device that improves soil by evenly stirring and mixing powdered chemicals and earth and sand that have been spread on the ground surface.

For this purpose, the present inventor has already developed a device in which a plurality of disks are fixed in parallel on a rotating shaft, and a plurality of arms are provided on the disks protruding in the radial direction.

This device performs functions such as cutting out soil, shredding the cut soil, and stirring and mixing it with powdered chemicals, and can be effectively used as a stirring device.

However, if the soil is highly viscous, it tends to stick between the disks, and in some cases it may not function as planned.

The present invention has been made to improve these points, and an object of the present invention is to provide an agitation device that has a function of automatically removing soil and sand that tends to stick between the disks.

Next, an example will be described.

<A> Housing The housing is an inverted U-shaped frame body with side plates 2 attached to both ends of a horizontal pedestal 1.

Inside the horizontal frame 1, there are hydraulic motors 3 on both sides.
A gear 4 is fixed on the rotating shaft of each motor 3.

A hydraulic pipe 6 from a solenoid valve 5 is connected to each motor 3, so that by switching the solenoid valve 5, forward and reverse rotation can be applied to the hydraulic motor 3.

On one side of the side plate 2, a scraper blade 15 formed at an acute angle toward the direction of movement of the housing is provided so as to be attachable and detachable.

<B> Rotary blade Attach the rotating shaft 7 horizontally through both side plates 2.

A plurality of discs 8 are fixed to the rotating shaft 7, and a plurality of sets of two L-shaped arms 9 are attached to each disc 8 in a bent state.

The disk 8 may be a single circle, but the digging effect will be even better if it is provided with hook-shaped notches 10 at a plurality of locations and has an acute corner blade 11 facing the direction of rotation.

The lengths of the plurality of arms 9 provided on the disk 8 are not all the same, and short arms 9 and long arms 9 are provided alternately.

<C> Freely Rotating Blade A loosely fitting tube 21 having an inner diameter somewhat larger than the outer diameter of the shaft 7 is fitted into the rotating shaft 7 .

This loose fitting cylinder 21 is positioned between each disc 8 fixed to the shaft 7.

A freely rotatable arm 22 is provided on the loosely fitting cylinder 21 in a radial direction, but the freely rotatable arm 22 is shorter than the long arm 9 of the disc 8.

The free rotating arm 22 has its tip divided into two parts and is bent in the direction of the disk 8 on both sides, but the tip is bent toward the disk 8 on both sides.
It will be located inside the long arm 9 provided in the.

<D> Drive Mechanism A sprocket 16 is fixed to the rotating shaft 7 passing through the side plate 2 at a position inside the side plate 2.

And gear 4 and sprocket 1 in horizontal frame 2
6 is connected by a chain 17.

On the other hand, the electromagnetic valve 5 is configured so that a hydraulic pipe from an external power unit, for example, a power unit of a jumbo, can be easily connected to the solenoid valve 5.

Furthermore, a cover 20 is attached above the rotary disk 8, front and rear, to prevent scattering of the earth and sand to be cut and kneaded.

Next, how to use it will be explained.

<B> Preparation Since the device of the present invention is not a special purpose machine, for example, remove the bucket of the yunbo, attach it to the end of the arm of another drive machine, and connect the hydraulic pipe.

Meanwhile, chemicals to be mixed are sprinkled on the ground surface.

<B> Cutting and stirring When the drive unit is moved backward and the disk 8 is rotated, the long arm group 9 first scrapes away the soil and chemical layer.

The scraped earth clod is cut into approximately uniform small lumps by the long and short arms 9 and the square blade 11 in the space surrounded by the cover 20, and mixed with chemicals to become particles with approximately equal diameter. Its outer periphery is well coated with chemicals and remains in the path of the device.

Since the portion of the side plate 2 that does not rotate, such as the disk 8, is provided with a scraping blade 15 having an acute-angled tip, the resistance of the earth and sand during movement can be reduced to a minimum.

<C> Prevention of soil adhesion As the disk 8 rotates, each arm 9 embeds soil and slices, but highly viscous soil tends to adhere between the disks 8 and around the rotating shaft 7.

However, since the freely rotating arm 22 itself does not have a driving force, when the arm 9 of the disk 8 sinks into the earth and sand, it hits the earth and sand and is prevented from rotating.

In this way, the disks 8 on both sides continue to rotate, and since the free rotation arm 22 in the middle stops, a relative rotation in the opposite direction occurs between them, and as a result, the earth and sand between the disks 8 is scraped out. It will be.

Since the present invention is as described above, the following effects can be expected.

<B> Since the topsoil is first cut only from the arms protruding from the disk, there is no significant resistance applied to the disk, and the power required to rotate the disk is small.
The rigidity and weight of the supporting housing are also reduced.

<B> First, the soil clod is cut with an arm, and then the soil clod is cut into small pieces using a square blade and a short arm in the space inside the cover, and then kneaded between the adjacent arms, so the soil mass is small in diameter and has a granular shape. We were able to produce uniform soil particles.

This is a big difference from conventional devices of this type, which simply stir up the clods and aim to break them by collision with each other, resulting in many large clots and non-uniformity.

As a result of obtaining soil particles of uniform particle size through cutting, the work of destroying the surrounding area with chemicals is easy and efficient, and it is possible to obtain improved strength that cannot be obtained with conventional ground improvement methods. Ta.

<C> The arm of the disc that has the driving force digs into the earth and sand and cuts it, but the freely rotating arm of the loose fit cylinder hits the earth and sand and is prevented from rotating.

At that time, the difference in rotation angle and speed between both arms removes the dirt that adheres to the rotating shaft or becomes clogged between the discs, and the arms that do not always have dirt attached can efficiently cut out dirt. It can be carried out.

[Brief explanation of the drawing]

FIG. 1: A partially cutaway view of the present device, FIG. 2: A side view thereof, FIG. 3: A perspective view of the main parts of a disc and a loosely fitting cylinder, and FIG. 4: A sectional view of the loosely fitting cylinder. 8: Disc, 9: Arm, 21: Freely fitting cylinder, 22: Freely rotating arm.

Claims (1)

[Scope of Claim for Utility Model Registration] A plurality of disks are fixed in parallel to a horizontal rotating shaft, each disk has a group of arms protruding in the radial direction to form a rotating blade, and a cylinder is installed between the disks on the rotating shaft. A soil agitating device, which is loosely fitted into the cylinder, and has an arm shorter than the arm of the disk protruding in a radial direction.