JPH034691B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention mainly relates to a mud blender for soil improvement. In other words, when constructing a foundation on soft ground for housing, etc., powdered soil improvement solidification material such as special cement is mixed with the excavated soil, mixed, and then returned to the excavated hole and filled. This invention relates to a mud blender for ground improvement for creating columnar solidified bodies inside.

(Prior art and its problems) Conventionally, the excavated soil discharged from excavation has been mixed and stirred manually or with a small shovel machine, and the work of charging it into the excavation hole after mixing it with solidification material etc. has also been done manually or with a small shovel machine. It is being done. However, the work efficiency is poor and the mixing condition is often uneven.

Furthermore, when using a conventionally used concrete mixer, it takes time and effort to introduce the excavated soil into the mixer and to introduce it into the excavated hole after mixing.

Furthermore, in the conventional concrete mixer, the generator must be separately transported and installed, which is inconvenient for maneuvering, ie, transporting and installing.

Concrete mixers also have problems with the shape of their blades.

(Objective of the Invention) The object of the present invention is to enable continuous and easy excavation of soft ground, mixing and stirring of excavated soil and solidification material, and injection of the mixed soil into an excavation hole after stirring. be.

(Means for Achieving the Object) In order to achieve the above object, the present invention provides a bottomed cylindrical mud blender cover with an open upper end that can be fixed to the ground via an appropriate support mechanism, and a mud blender cover A screw auger insertion tube with open upper and lower ends is provided in the center of the screw auger, and a screw auger supported by a truck auger vehicle or the like, which is separate from the mud blender, can be freely inserted from above into the insertion tube. A stirring blade is rotatably arranged on the outer circumferential side, and the insertion tube is provided with a lower half of the insertion tube that extends downward from the bottom of the cover, and the lower end of the insertion tube is opened toward the ground, and the bottom of the cover An opening/closing lid is provided that communicates between the lower half of the insertion tube and the lower half of the insertion cylinder via a guide passage, and opens and closes between the guide passage and the bottom.

(Example) In FIG. 2 showing a plan view of a mud blender, a screw auger insertion tube 3 having a screw auger insertion hole 2 is provided in the center of a bottomed cylindrical mud blender cover 1. A rotary cylinder shaft 7 having stirring blades 4 and 5 is rotatably fitted on the outer circumferential side of the insertion cylinder 3, and the rotary cylinder shaft 7 is interlocked and connected to a hydraulic motor 6 via a chain sprocket 8, a chain belt 9, etc. are doing. The hydraulic motor 6 is fixed to the outer peripheral surface of the mud blender cover 1. A pair of left and right upper input ports 10 are provided in the bottom portion 1a of the mud blender cover 1, and each upper input port 10 is provided with an upper opening/closing lid 11 that can be opened and closed. 14 is a chain cover. Reference numeral 12 denotes hanging rods having hanging holes, and a pair of left and right hanging rods are fixed to the outer peripheral surface of the mud blender cover 1.

Vertical cross-sectional view of the Matsudo blender (-
In FIG. 1, which shows a cross-sectional view, the insertion tube 3 has a lower tube half 3a extending downward from the bottom 1a of the Matsudobun render cover 1, the lower end of which is open toward the ground, and has a donut shape. A shaped base plate 13 is integrally provided. The upper end of the insertion tube 3 is open upward. A lower input port 15 is formed on both left and right sides of the lower cylinder half 3a, and a chamber-shaped input path 16 extends radially outward, and the upper end of the input path 16 is located at the upper input port 10 portion. death,
Matsudo blender cover 1 with upper opening/closing lid 11
It is designed to open and close from the inside. The lower input port 15 is configured to open and close with respect to the insertion hole 2 by rotating a cylindrical lower opening/closing lid 17. The bottom plate 18 of the input channel 16 is inclined downward toward the insertion tube 3, so that the mixed soil in the input channel 16 naturally flows to the lower input port 15. A reinforcing member 19 connects the bottom plate 18 of the input path 16 and the base plate 13.

To explain the structure of the upper opening/closing lid 11 in a little more detail, a pivot shaft 20 is rotatably provided at the upper end of the radially outer peripheral side of the input channel 16, and one end of the upper opening/closing lid 11 is fixed to the shaft 20. At the same time, the operating lever 21 is fixed. When the operating lever 21 is rotated upward, the upper opening/closing lid 11 is rotated downward and opened as shown by the imaginary line.

In FIG. 5 showing an enlarged perspective view of the operating lever 21, a stop lever 2 is located next to the operating lever 21.
2 is disposed, and the operating lever 21 is held in a closed position (the position shown by the solid line) by a stop lever 22. That is, stop lever 2
2 is fixed to a rotating shaft 24, and the rotating shaft 24 is rotatably supported on the outer peripheral side of the feeding path of the mud blender cover 1 via a bracket 25.
A hook 23 is formed at one end. On the other hand, the operating lever 21 is integrally provided with a protrusion 26 . When the operating lever 21 is rotated to the closed position shown by the solid line, the stop lever 22 is rotated upward to the operating position shown by the solid line in FIG.
is engaged with the protrusion 26 to keep the operating lever 21 in the closed position. Also, stop lever 2
If you lower 2 and remove 23, the upper close/open lid 1 shown in Figure 1 will open.
1, the upper opening/closing lid 11 naturally opens, and at the same time, the operating lever 21 returns to the open position shown by the imaginary line in FIG.

To explain in detail the opening/closing structure of the lower input port 15 in FIG. 1, as shown in FIG. 4, the lower opening/closing lid 17 is rotatably fitted to the inner peripheral side of the lower half portion 3a of the insertion tube. A pair of window holes 27 are formed in the lower opening/closing lid 17, and at the upper end of the lower opening/closing lid 17,
Two operating handles 28 are formed that extend radially outward. That is, by rotating the lower opening/closing lid 17 in the direction of arrow A using the operation handle 28 from the closed state shown in FIG. The lower opening/closing lid 17 is returned to the position shown in FIG. 4 in the direction of arrow A to completely shift the lower slot 15 and the window hole 27, and the lower slot 15 is closed.

In Figure 3, the screw auger charging cylinder 3
The screw auger 30 inserted therein is connected to a working beam 32 of a truck auger car 31, receives rotational power from the truck auger car 31, and is operated to move up and down by vertically swinging and expanding/contracting operations of the beam 32. Ru.

The hydraulic pump 6 of the mud blender is connected to a working hydraulic power source of the truck auger vehicle 31 via a hydraulic hose 35.

(Function) At the work site, a wire is hooked to the hanging rod 12, and the mud blender is suspended by the beam 32 of the truck auger vehicle 31, and is placed at a hanging base point, that is, an excavation point. The hydraulic motor 6 of the mud blender is connected to the hydraulic power source of the truck auger vehicle 31 via a hydraulic hose 35.

Next, the screw auger 30 connected to the beam 32 is inserted into the auger insertion hole 2 of the mud blender, and is lowered while rotating in the forward direction to excavate the ground to a predetermined depth.

After excavation, the screw auger 30 is pulled up while rotating in the normal direction, thereby putting the excavated soil into the mud blender cover 1. At this time, both the upper lid 11 and the lower input port 15 are closed.

Then, the solidified material is put into the mud blender cover 1, and the agitation switch is turned on from the driver's compartment of the auger car 31. As a result, the auger car 31
The hydraulic oil of the hydraulic power source is supplied to the hydraulic motor 6 via the hydraulic hose 35, the hydraulic motor 6 rotates, the stirring blades 4 and 5 rotate via the chain belt 9 and the cylindrical shaft 7, and the excavated soil and Mix and stir the solidifying material.

After stirring, the upper opening/closing lid 11 and the lower opening/closing lid 17 are opened manually, and the mixed soil of excavated soil and solidification material is charged into the excavation hole through the upper input port 10, the input path 16, and the lower input port 15. At the same time, the screw auger 30 is lowered while rotating in the opposite direction, thereby compacting and filling the mixed soil.

(Another Example) As a method of using the Matsudo blender of the present invention,
For example, a solidification material may be mixed and stirred with soil brought from another location, and then poured into an already excavated borehole.

(Effects of the Invention) As explained above, the present invention allows the mud blender cover 1, which is a bottomed cylinder with an open upper end, to be fixed to the ground via an appropriate support mechanism, and at the same time, the mud blender cover 1 can be attached to the center of the mud blender cover 1. A screw auger insertion tube 3 with open upper and lower ends is provided, and a screw auger 30, which is separate from the mud blender and supported by a truck auger vehicle, etc., can be freely inserted from above into the insertion tube 3, and the outer periphery of the insertion tube 3 is Stirring blades 4 and 5 are rotatably arranged on the sides, and the insertion tube 3 is provided with a lower half 3a of the insertion tube that extends downward from the bottom 1a of the cover 1, and the lower end of the insertion tube 3 is directed toward the ground. The bottom part 1a of the cover 1 and the lower half part 3a of the insertion tube are communicated with each other by the input passage 16.
Since the opening/closing lid 11 is provided between the bottom portion 6 and the bottom portion 1a, there are the following advantages.

A series of operations for creating columnar solidified bodies in the ground can be carried out continuously and efficiently while the Matsudo blender remains installed in the ground area to be excavated.

That is, without moving the installed Matsudo blender, in succession to the excavation work of the screw auger 30, the work of charging excavated soil into the Matsudo blender, the work of mixing and stirring with the solidification material, the work of charging the mixed soil into the excavation hole, and The compaction work of mixed soil can be carried out continuously and efficiently.

A hydraulic motor 6 is provided as a drive mechanism for the stirring blade, and the hydraulic motor 6 is connected to a screw auger 30.
When connected to the hydraulic power source of the truck auger vehicle 31 equipped with It saves the trouble of installing it, and it does not take up much space.

Further, the mud blender in the present invention is a separate object from the screw auger, and the mud blender alone is movable and used by being installed on the ground at a predetermined position.

Therefore, when transporting the Matsudo blender to the site, installing it at a predetermined location on the site, or moving it within the site, it is only necessary to move the Matsudo blender, regardless of the screw auger 30, which makes handling very difficult. It's easy.

Further, if a hanging rod 12 is provided as shown in the figure, it can be easily moved by an auger wheel 31.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of a mud blender to which the present invention is applied (-cross-sectional view of Fig. 2), Fig. 2 is a plan view of the mud blender, and Fig. 3 is an overall perspective view showing the working state of the screw auger vehicle. Figure, 4th
The figure is a perspective view of the screw auger insertion tube, and FIG. 5 is a perspective view of the operating mechanism of the opening/closing lid. 1...Matsudo blender cover, 1a...Bottom, 2...Screw auger insertion hole, 3...Screw auger insertion tube, 4, 5...Stirring blade, 6...Hydraulic motor, 11...Top opening/closing lid , 16...Input path, 3
0... Screw Auger, 31... Screw Auger vehicle.

Claims (1)

[Scope of Claims] 1. A bottomed cylindrical mud blender cover with an open top end that can be fixed to the ground via an appropriate support mechanism, and a screw auger with open top and bottom ends installed in the center of the mud blender cover. An insertion cylinder is provided, into which a screw auger separate from the mud blender and supported by a truck auger wheel or the like can be freely inserted from above, stirring blades are rotatably arranged on the outer periphery of the insertion cylinder, and the screw auger is inserted into the insertion cylinder from above. The tube is provided with a lower half of the insertion tube that extends below the bottom of the cover, the lower end of the insertion tube is opened toward the ground, and an input passage is provided between the bottom of the cover and the lower half of the insertion tube. A mud blender characterized by being provided with an opening/closing lid that communicates with the feed channel and the bottom. 2. Claim 1, characterized in that a hydraulic motor is provided as a drive mechanism for the stirring blade, and the hydraulic motor is connected to a hydraulic power source of a truck auger vehicle equipped with a screw auger.
Matsudo blender as described in section.