JPS60491B2 - Stirring device for improving soft ground - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a broken frame device used in a construction method to improve soft ground by sending a powdery ground stabilizer with compressed air and ejecting it into the ground, and mixing it with ground soil. The object of the present invention is to provide a layer for improving soft ground that can completely adhere a soil stabilizer to the ground soil and recover only compressed air.

Hereinafter, the present invention will be explained based on an illustrated embodiment.

Reference numeral 1 denotes a hollow rotating shaft, which extends downward from a rotary drive machine 3 that is vertically movably suspended from a construction machine 2, and has a plurality of winding wings 4, 4r, . . . at its lower end.・Protrudes in a radial shape.

A stabilizer supply pipe 6 is inserted into the rotating shaft 1 with a gap 5 therebetween, and a hose 7 is connected to the stabilizer supply pipe 6 via a swivel mechanism (not shown). The gap 5 communicates via a swivel 8 with a hose 9 whose end opens into the atmosphere.

The fly pestle blade 4 is an elongated hollow body whose entire length is open only at the lower part, and the distal end 11 of the stabilizer supply pipe 6 extends into the interior space 10 thereof.

The tip of the distal end 11 is closed, and the distal end 11 is closed.
A large number of holes 12 are arranged in a row in the lower tube wall.

The mixed fluid of powdery ground stabilizer and compressed air sent from the hose 7 to the stabilizer supply pipe 6 is ejected from this hole 12 and collides with the ground soil exposed at the open part 13 of the fly Azusa wing 4. do.

Then, the ground stabilizer adheres to the ground soil, and the compressed air bounces back and heads upwards. The rope wing 4' is a hollow body similar to the Azusa wing 4, and the tip is inside the inner space 10'. When closed, there is an open row 4 at the base end to the inner space of the cluster blade 4, and a lotus tube 11' having a number of holes 12' extends from the lower tube wall.

Then, the compressed air directed upward in the internal space 10 of the Azusa wing 4 passes through the lotus pipe 11 and blows out from the hole 12', and the ground stabilizer remaining in this compressed air adheres to the ground soil. do.

The upper part of the internal space 10' of the Kenazusa wing 4' communicates with the gap 5 through an opening 15 provided in the tube wall of the rotating shaft 1, and the internal space 1
The compressed air containing almost no soil stabilizer in the gap 5
It passes through the hose 9 and is released into the atmosphere.

Although this embodiment is a case of two-stage ejection, it goes without saying that ejection may be repeated, and the manner of ejection is not limited to the illustrated embodiment.

In short, in the present invention, the important point is that the internal spaces of the plurality of blades are connected by a lotus pipe, so that the ejection is performed in multiple stages. The soil stabilizer completely adheres to the ground soil, and the recovered compressed air does not contain any soil stabilizer, so not only is there no waste of soil stabilizer, but the recovered compressed air It has the advantage that there is no need to provide a separation device such as a filter even when air is released into the atmosphere.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of the entire construction equipment equipped with the device of the present invention, Fig. 2 is a vertical sectional view of an example of the device of the present invention, and Fig. 3 is a
FIG. In addition, in the drawings, 1: Rotating shaft, 4, 4': Fly Azusa wings, 6: Stabilizer supply pipe, 10, 10': Internal space, 11': Transport pipe, etc. Figure 2. Figure 1 Figure 3

Claims (1)

[Claims] 1. A plurality of stirring blades protruding radially from the lower end of a rotating shaft, a pipe line for guiding and ejecting a mixed fluid of powdery ground stabilizer and compressed air into the internal space of one stirring blade, and one stirring blade. A pipe line for guiding the compressed air separated in the internal space of one stirring blade into the internal space of another stirring blade for further ejection, and a pipe line for introducing the compressed air separated in the internal space of the final stirring blade into the atmosphere. A stirring device for improving soft ground, characterized by comprising a conduit for guiding the soil.