JPS5854121A - Device for preventing adhesion of earth to ground amending device - Google Patents

Abstract

PURPOSE:To improve an agitating effect, by a method wherein a device for protecting adhesion of earth consists of a toroidal collar, loosely engaging each of a plural number of agitating shafts hanging down in parallel, and a lateral bar for coupling together the collars. CONSTITUTION:A ground amending device is constituted such that agitating blades are attached to each of a plural number of agitating shafts 6 hanging down in parallel. Two toroidal collars 11 loosely engage said agitating shaft 6, the collars 11 are coupled to each other by means of a lateral bar 12, and this constitutes a device 13 for preventing adhesion of earth. With the agitating shaft 6 turned, the device 13 for preventing adhesion of earth moves vertically along the agitating shaft 6 between the agitating blades 5 vertically adjoining each other through movement and resistance of the agitated earth, and earth 14 adhered to the agitating shaft 6 is removed by the toroidal collar 11. Additionally, the lateral bar 12 functions as a baffle plate to increase an earth- agitating effect.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a soil adhesion prevention device for a soil improvement machine, and a soil adhesion prevention device for a soil improvement machine used in the 41KI 1-layer warming treatment method.

In the deep heating method for improving soft submarine ground, a ground improvement machine is inserted into the soft soil from a ground reforming ship to improve the ground made of soft clay, and cement is then pumped from the ground improvement machine into the soft soil. The slurry is injected into the soft soil, and the cement slurry and soft soil are stirred using the stirring blades of a tractor to improve the ground. During the ground improvement work, clay etc. adhere to the stirring blades and around the shaft, which drastically reduces the stirring effect of the stirring blades, impairs the homogeneity of the improved soil, and also impedes the injection of cement slurry. Nine.

The soil adhesion prevention device of the soil improvement machine of the present invention is designed to eliminate such drawbacks, and has a plurality of stirring shafts that are spaced apart from each other and hang down in parallel, each of which is in contact with the upper rod of the stirring shaft. It is characterized by consisting of a ring-shaped collar that fits loosely into a portion located between the blades, and a horizontal bar that connects the ring-shaped collars to each other.

The present invention will be described in detail below with reference to drawing VCj.

FIG. 1 is an explanatory diagram of the state of use of the t#A ground improvement machine, where l is the ground improvement machine, 2 is the ground improvement tugboat that holds it, 3 is the area scheduled for ground improvement, and 4 is the 10th area to be improved.

Figure 1g2 shows the details of the conventional soil improvement machine 1, and 5 is a plurality of stirring blades, 6 is the stirring blade 5 attached to the tip of the stirring blade 5 at a distance from the top, and two parallel hanging stirring shafts; 7 The shaft bearing 8 connects the stirring shaft 6t to the support 'T through this bearing 7.
9 is an upper drive section, 10 is a hanging J4, and each stirring shaft 6 is rotated in the opposite direction as shown in Fig. m3.

In the present invention, as shown in FIG. 4, two ring-shaped collars 11 having an inner diameter sufficiently larger than the outer diameter of the stirring shaft 6 are connected by a horizontal parr 12 to form a soil adhesion prevention device 13. The ring-shaped collar 11 is fitted into a portion of each stirring shaft 6 located between the stirring blades 5 which are vertically adjacent to each other.

Since the device of the present invention has the above-described configuration, the stirring shaft 6 is [
When the soil is turned q, the soil adhesion prevention device 13 moves up and down along the stirring shaft 6 between the vertically adjacent stirring blades 5 due to the movement and resistance of the stirred soil, and the soil adhesion prevention device 13 moves up and down along the stirring shaft 6 as shown in FIG. The attached ±14 is removed by the ring-shaped collar 11, and the horizontal pars 12 of the soil adhesion prevention device 13 of the present invention function as a baffle plate to increase the soil stirring effect.

As mentioned above, by using the device of the present invention, it is possible to eliminate the drawbacks of conventional soil improvement machines, and there is a great advantage that the efficiency can be further improved.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the soil improvement machine in use, Figure 2 is a front view of a conventional soil improvement machine, @S diagram is the A-A line diagram in Figure 2, and Figure 4 is a diagram showing the use of the present invention device. FIG. 5, which is a front view of the stirring blade portion of the soil improving machine, is an explanatory diagram of the state of soil adhering to the stirring shaft. 1... Conventional ground improvement machine, 2... Ground improvement tugboat, 3.
... Ground improvement planned area, 4... Improved soil, 5... Stirring blade, 6... Stirring shaft, 7... Bearing, 8... Main pipe, 9
... Upper drive part, 10... Hanging tool, 11... Ring-shaped collar, 12... Horizontal par, 13... Soil adhesion prevention device, 14... Soil. 4-10 Agent Patent Attorney Seiichi Sawaki -1+20 +4 En+50

Claims (1)

[Claims] (1) A ring-shaped collar that loosely fits into the portion between the vertically adjacent stirring blades of each of a plurality of stirring shafts that are spaced apart and hanging in parallel, and a horizontal bar that connects the ring-shaped collars to each other. Soil adhesion prevention device 0 for a soil improvement machine characterized by comprising: