JP2665653B2 - Ground improvement machine - Google Patents

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, this type of ground improvement machine is attached to the tip of an operating arm in an operating machine such as a backhoe, and a pair of left and right sprockets are arranged at the upper and lower portions of a support frame, respectively, and the space between the upper and lower sprockets is An endless chain is erected on, and each chain is provided with a row of stirring blades.
Each chain is rotated together with the rotation of the sprocket so that the powder or milk of the solidifying material is supplied and the soil is stirred and mixed.

[0003]

By the way, in such a conventional ground improvement machine, a gap is formed inside the endless chain, and even during the stirring and mixing of the ground, a gap is formed in the gap from between stirring blades. The soil had penetrated. Therefore, when the ground improvement machine is lifted upward, the soil inside the chain adheres to the backside of the stirring blades and the chain, and is lifted together with the ground improvement machine, and an excessive load is applied to a backhoe or the like that lifts the ground improvement machine. As a result, the workability has been reduced, which has led to a breakdown. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a ground improvement machine in which soil is prevented from entering the inside of the chain and the load when lifting the ground improvement machine is reduced.

[0004]

To achieve the above object, the ground improvement machine of the present invention has a plurality of sprockets arranged at the upper and lower portions of a support frame, and an endless chain is installed between the upper and lower sprockets. In the ground improvement machine in which a plurality of stirring blades are arranged in a row in each of the chains and the soil is stirred and mixed by rotating the chains, the soil is inside the chains and the soil is inside the chains. It has a configuration in which a cavity control box is provided to prevent the stagnation in the space.

[0005]

[Function] Since the cavity control box is arranged inside the chain, it is possible to prevent the soil from entering and staying inside the chain, and thereby the load when pulling up the ground improvement machine in the soil. It is reduced and workability 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, 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, two support plates 5, 5 whose upper ends are fixed to the horizontal plate 2 hang down.
Between the vertical plates 3, 3, a horizontal shaft 6 penetrating both support plates 5, 5 is mounted on the upper portion thereof, and a hydraulic motor 7 for rotating the horizontal shaft 6 is mounted at one end thereof. In addition, a horizontal shaft 8 is horizontally mounted 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 has a flat T-shaped blade 14 integrally fixed to the front of a horizontally long fixed plate 13 fixed to the front of the chain 10. Is 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.
The three and one wings 14 are fixed at the same interval as the width of the wings 14.

Further, the left stirring blade 11b and the right stirring blade 12b in the second stage have the same width, and two blade portions 14 are fixed at equal intervals. Furthermore, the left stirring blade 11c of the third stage has a width that is one third of that of the right stirring blade 12c,
One and three wing portions 14 are fixed at equal intervals. Hereinafter, the same configuration is repeated. This allows
Each set of the stirring blades 11 and 12 in the horizontal 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 both the chains 10, 10, the left and right wing portions 14, 14 are arranged as follows. Since the stepped blades 14 are located, the soil is uniformly stirred when the soil is stirred and mixed, and the stirring performance is improved.

Therefore, 15 is between the support plates 5 and 5,
It is a control box that fits in the gap S between the two sprockets 9 and 9 and is formed of a thin steel plate into a hollow box shape.
5a and 15a are fixed to the support plates 5 and 5, respectively. Then, the inclined surfaces 15b, 15b at the upper and lower portions of the front surface and the rear surface 15c are arranged to approach both chains 10, 10. This prevents soil from entering the gap S.

Further, a pair of left and right shock absorbers 16 and 16 are installed in the control box 15. 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 constantly 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. , Is trying to avoid such a situation.

The ground improvement machine of the present invention has the above-mentioned structure. When the hydraulic motor 7 is driven at the site of improvement of the ground, the chains 10, along with the upper sprocket 9, 9 rotating along with the horizontal shaft 6, rotate. 10 and rotation, is moved upward from successively lower each stirring blade 11, 12. Then, while the powder or the milk of the solidifying material is being supplied, the soil improvement machine is repeatedly moved up and down to excavate the soil and mix it.

At this time, since the soil does not enter and stay inside the chain in the ground improvement machine, that is, in the gap S in the soil by the control box 15, the weight of the ground improvement machine does not increase. The work can be done with a predetermined output.

As shown in FIGS. 4 and 5, the stirring blade 1 attached to the chains 10 and 10 during operation of the ground improvement machine.
Soil mixed by stirring on the front of Nos. 1 and 12 is each stirring blade 11,
Enter the back side of the chains 10 and 10 from between 12 and
The mixture is stirred and mixed again at B between the back surface of 0 and 10 and the inclined surface 15b or the rear surface 15c of the control box 15. Therefore,
This significantly improves the stirring efficiency.

[0018]

As described above, in the ground improvement machine of the present invention, the control box of the cavity is arranged in the gap formed inside the chain, so that soil may enter and stay in the gap. There is no such thing, so an excessive load is not applied to the operation of the ground improvement machine, and the failure due to this can be prevented,
Work can also be done efficiently.

Further, since the stirring blades are located close to the front surface and the rear surface of the insect control box, the stirring blades are used to stir once.
The mixed soil turns to the back side of the chain and is stirred again with the control box, which has the effect of dramatically improving the stirring efficiency.

[Brief description of the 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.

FIG. 3 is a sectional view taken along line XX of FIG. 1;

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 diagram of only stirring blades.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support frame 9,9 Sprocket 10,10 Chain 11,12 Stirring blade 14 Wing part 15 Control box

Claims (1)

(57) [Claims] 1. A plurality of sprockets are arranged on the upper and lower portions of a support frame, an endless chain is installed between upper and lower sprockets, and a plurality of stirring blades are arranged in line in each chain, and the chain is provided. In the ground improvement machine configured to rotate and mix the soil by stirring, a control box of a cavity is arranged inside the chain to prevent the soil from staying inside the chain. A ground improvement machine.