JPH0827770A - Ground improvement machine - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the stirring efficiency of soil by devising a stirring blade. [Structure] A pair of sprockets 9 and 9 are arranged on the upper and lower portions of the support frame 1, and endless chains 10 and 10 are installed between the sprockets 9 and 9. In the ground improvement machine in which the blades 11 and 12 are horizontally arranged and the soil is stirred and mixed by rotating the chains 10 and 10, the stirring blades 11 and 1 are used.
2, one or more wing portions 14 for stirring and mixing soil are provided on the front surface thereof in the lateral direction so as to be spaced apart from each other by approximately one wing portion 14, and each stirring blade 11, 12 The blade portion 14 includes the blade portions 14 and 1 in one stirring blade 11 and 12 in the longitudinal direction.
The blade portions 14 of the upper and lower adjacent stirring blades 11 and 12 are positioned between the four.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground improvement machine for rotating a chain having stirring blades to stir and mix the soil for improvement.

[0002]

2. Description of the Related Art Conventionally, in this type of ground improvement machine, a pair of sprockets are arranged on the upper and lower portions of a support frame, and an endless chain is installed between the upper and lower sprockets, and a stirring blade is installed in the chain. Are provided in a plurality of rows, and each chain is rotated together with the rotation of the sprocket to stir and mix the soil while supplying powder of the solidifying material or milk.

[0003]

By the way, in such a conventional ground improvement machine, each of the stirring blades is formed by a single blade having the same shape, and further, the stirring blades in the longitudinal direction are arranged at positions overlapping with each other. Since it is provided, excavation of the ground can be easily performed, but the agitation of soil is not sufficient,
There was a problem that the stirring efficiency did not increase. Therefore,
The present invention has been made to solve the above problems, and is to improve the stirring efficiency by devising a stirring blade.

[0004]

In order to achieve the above object, the ground improvement machine of the present invention has a pair of sprockets arranged at the upper and lower portions of a support frame, and an endless chain is installed between both sprockets. In the ground improvement machine in which a plurality of stirring blades are horizontally arranged in each of the chains and the soil is stirred and mixed by rotating the chains, the stirring blades stir the soil on the front surface. One or two or more blades to be mixed are projected in the lateral direction at intervals of about one blade, and the blades of each stirring blade are arranged between the blades of one stirring blade in the vertical direction. The upper and lower adjoining agitating blades are positioned so that they are positioned.

[0005]

[Function] When the chain is rotated to stir and mix the soil, the soil that has passed between the blades of one stirring blade hits the other stirring blade located below it and is distributed to both sides. It passes between the wings again. Further, the soil that has passed between the blade portions hits another stirring blade located below the blade portion and is distributed to both sides. In this way, the soil is repeatedly separated and aggregated, whereby the soil is sufficiently agitated and mixed, and the agitation efficiency is improved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the ground improvement machine according to the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a ground improvement machine according to the present invention, and FIG. 2 is a side view thereof. In the figure,
Reference numeral 1 denotes a support frame body formed by combining a horizontal plate 2 and left and right vertical plates 3 and 3 into a front gate shape. On the upper surface of the horizontal plate 2, an operating arm of a movable actuator such as a backhoe (not shown). The mounting plates 4 and 4 for attaching to the tip of the are installed upright.

Inside the left and right vertical plates 3 and 3, two support plates 5 and 5 having upper ends fixed to the horizontal plate 2 are suspended.
Between the vertical plates 3 and 3, a horizontal shaft 6 penetrating both the support plates 5 and 5 is horizontally installed on the upper part thereof, and a hydraulic motor 7 for rotating and driving the horizontal shaft 6 is attached to one end thereof. In addition, a horizontal shaft 8 is provided horizontally below the support plates 5 and 5.

A pair of left and right sprockets 9 and 9 are provided inside the support plates 5 and 5 on the upper and lower horizontal shafts 6 and 8, respectively.
Are fixed, and endless chains 10, 10 are installed between the upper and lower sprockets 9, 9. A plurality of agitating blades 11, 11, ... And a plurality of agitating blades 12, 12, ... Which are arranged in a straight line in the lateral direction are arranged and fixed to both chains 10, 10, respectively. The pair of stirring blades 11 and 12 in the lateral direction are
All have the same width.

As shown in FIGS. 4 and 5, each of the stirring blades 11 and 12 is formed by integrally fixing a flat T-shaped blade portion 14 to the front surface of a horizontally long fixing plate 13 fixed to the front surface of the chain 10. To be done. As shown in FIG. 6, each fixing plate 13 has a left stirring blade 11a at the uppermost stage having a width three times that of the right stirring blade 12a.
Three blades 14 and one blade 14 are fixed at the same interval as the width of the blades 14, respectively.

The left stirring blade 11b and the right stirring blade 12b in the second stage have the same lateral width, and two blade portions 14 are fixed at equal intervals. Furthermore, the left stirring blade 11c of the third stage has a width of one third of the right stirring blade 12c,
One and three blades 14 are fixed at equal intervals. After that, it is similarly repeated. This allows
Each set of stirring blades 11 and 12 in the lateral direction is arranged in a meandering manner.

Further, since the wing portions 14 of each fixing plate 13 are arranged so as to be separated from each other by the same lateral width as the wing portions 14, in the direction along the both chains 10 and 10, between the left and right wing portions 14 and 14, The stepped wings 14 are to be located.

Reference numeral 15 denotes a control box which is fitted between the support plates 5 and 5 and between the sprockets 9 and 9, and both sides thereof are fixed to the support plates 5 and 5. If the soil originally enters the chains 10 and 10 and is not discharged as it is, the soil control box 15 will be applied as a load as it is when the soil improvement machine is pulled out from the soil, and its operation will be hindered. This is because

The insect control box 15 has a pair of left and right shock absorbers 16 and 16 installed therein. The shock absorbers 16 and 16 are mounted on the front surface of a base plate 17 mounted in the control box 15 via a leaf spring 18 to control the control box 1.
5. A holding shaft 20 projecting forward from the opening 19 on the front surface is mounted, and a pressing sprocket 21 for applying tension to the chains 10, 10 is mounted on the tip thereof.

The pressing sprocket 21 is always urged forward by a leaf spring 18, but when a stone intervenes between the sprocket 9 and the chain 10 and the chain 10 is about to come off, it is pushed back backward. , Is trying to avoid such a situation.

The use of the ground improvement machine of the present invention thus constructed will be described. When the hydraulic motor 7 is driven at the site where soil is improved, the chains 10, 10 rotate in the direction of the arrow in FIG. 2 as the upper sprockets 9, 9 rotate together with the horizontal shaft 6, and the stirring blades move. 11 and 12 are sequentially moved up from below. Then, the powder of the solidifying material or the milk is supplied and the soil is excavated and mixed with stirring.

At this time, as shown in FIG. 6, for example, the soil that has passed between the blade portions 14 and 14 of the uppermost stirring blades 11a and 12a is the second portion between the blade portions 14 and 14 as seen from the arrow. It hits each blade portion 14 of the stirring blades 11b, 12b located at the stage, is distributed to both sides there, and again each blade portion 14, 14
Pass through. In addition, the soil that has passed between the blades 14 and 14 has the stirring blades 11c and 1c located in the third stage between them.
It is distributed to both sides by hitting each wing portion 14 of 2c.

In this way, the soil is repeatedly separated and collected, whereby the stirring of the soil and the mixing with the solidifying material are efficiently performed.

[0018]

As described above, in the ground improvement machine of the present invention, since the blades of the stirring blades vertically adjacent to each other are located between the blades of one stirring blade, the soil separation is performed. -Assembly is repeated, and the stirring is performed uniformly and uniformly, which improves the stirring efficiency of soil,
This has the effect that work efficiency and work period can be shortened.

[Brief description of drawings]

FIG. 1 is a front view of a ground improvement machine of the present invention.

FIG. 2 is a side view of the same.

3 is a sectional view taken along line XX of FIG.

FIG. 4 is an enlarged plan view of a stirring blade.

FIG. 5 is a side view of the same.

FIG. 6 is a layout view of only a stirring blade.

[Explanation of symbols]

 1 Support frame 9,9 Sprocket 10,10 Chain 11,12 Stirring blade 14 Blade part

Claims (1)

[Claims] 1. A pair of sprockets are arranged on the upper and lower portions of a support frame, an endless chain is installed between both sprockets, and a plurality of stirring blades are horizontally arranged in a row in each chain.
In the ground improvement machine adapted to agitate and mix the soil by rotating the chain, the agitator blade has one or more blades for agitating and mixing the soil on the front surface thereof in a lateral direction to substantially the blade portion 1. The blades of the agitating blades are provided so as to be spaced apart from each other, and the blades of the agitating blades are arranged so that the blades of the agitating blades adjacent to each other in the vertical direction are located between the blades of one agitating blade in the longitudinal direction. A ground improvement machine.