JP2586347Y2 - Stirring mixing equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention is used for stirring and mixing mortar, cement milk, powdery material and the like into the ground while discharging and injecting the same into the ground in order to enhance the ground strength of the soft ground. And a stirring and mixing apparatus.

[0002]

2. Description of the Related Art A large number of devices of this type have been known in the prior art. Generally, a drive shaft rotated by a drive motor, a digging wing integrally rotatably attached to a lower end of the drive shaft, and With a stirring blade located above the excavation blade and rotatably attached to the drive shaft,
A supply passage for feeding the improving material is provided along the drive shaft. The improved material is conveyed through a supply passage to a discharge port provided at the base of the stirring blade, etc., and is further discharged and injected into the surrounding soil with the rotation of the stirring blade, and is mixed and mixed with the soil. To obtain the treated ground.

In such a stirring and mixing method, when the stirring blades or excavating blades rotate in the ground, the soil adheres to the stirring blades and the like, and furthermore, the soil in the peripheral portion is integrally formed with the stirring blades and the like in the same direction. Easy to rotate. (This is called "co-rotation"
Say If this co-rotation occurs, a sufficient stirring effect cannot be obtained. Therefore, in this type of device,
For example, as disclosed in Japanese Patent Application Laid-Open No. 62-86220, means for rotating the excavating blade and the stirring blade in opposite directions to prevent co-rotation are provided, or as disclosed in Japanese Patent Publication No. 58-25131. As described above, a technique has been proposed in which the micro-vibration is applied to the entire excavation drive shaft, and the adhesion of the soil is stopped to prevent co-rotation.

[0004]

However, although the device having the conventional structure can prevent the co-rotation of the soil to some extent, it cannot be said that it is still sufficient and the stirring efficiency is not sufficiently satisfactory. Therefore, there has conventionally been a demand for an apparatus capable of performing high-efficiency stirring without co-rotation.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a stirring and mixing apparatus having a structure capable of efficiently stirring soil and an improving material without co-rotation.

[0006]

In order to achieve the above object, the present invention provides a stirring and mixing apparatus for rotating a stirring blade attached to a driving shaft to mix and stir ground soil and an improving material. A fixed stirring blade fixedly mounted on the periphery, a moving stirring blade mounted movably in the vertical direction around the drive shaft, and a reaction blade rotatably mounted on the lower end of the drive shaft. A bevel gear mechanism interposed between the reaction blade and the moving stirring blade and driven by rotation of the drive shaft; and a bevel gear mechanism interposed between the bevel gear mechanism and the moving stirring blade. And a crank mechanism for converting the driving of the moving stirring blade into a vertical movement of the moving stirring blade.

[0007]

According to this structure, when the lower end of the drive shaft is lowered onto the ground, the reaction blade is fixed in the ground. Further, when the drive shaft is rotated in this state, the fixed stirring blade and the movable stirring blade are rotated integrally with the drive shaft, and at the same time, the movable stirring blade is vertically moved by the bevel gear mechanism and the crank mechanism. Therefore, when the moving stirring blade is rotated integrally with the fixed stirring blade, the moving stirring blade is rotated while moving the ground soil in the vertical direction, and this movement is performed with respect to the ground soil that is going to rotate together. It becomes resistance, and this resistance stops the co-rotation of the ground soil, and can perform more efficient stirring.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic side view showing a part of a stirring and mixing apparatus according to an embodiment of the present invention, which is cut away.
FIG. 2 is a schematic side view of a main part, partially cut away along the line AA in FIG. 1. 1 and 2, the apparatus has a drive shaft 1 that is rotated by a drive motor (not shown). The drive shaft 1 has a fixed stirring blade 2, a movable stirring blade 3, a reaction blade 4, a bevel gear mechanism 5, , A crank mechanism 6 and the like. Also, although not shown, the drive shaft 1 is provided with a fluid pipe through which mortar, cement milk, powdery and granular improver, and the like are injected and discharged and injected during the stirring and mixing process. Has been established.

More specifically, the drive shaft 1 comprises a shaft body 1
a and a cylindrical shaft portion 1b fixedly attached to the lower end of the shaft main body 1a with bolts 7. Among them, a guide shaft 8 protruding downward is integrally formed at the center of the lower end of the shaft main body 1a. On the other hand, in the cylindrical shaft portion 1b, a slit 9 extending in the vertical direction is provided on a side surface, and an opening 10 is formed on a lower surface.

The fixed stirring blades are fixed to the peripheral surfaces of the cylindrical shaft portion 1b and the shaft main body 1a, and are provided in a plurality of stages (two in this embodiment).
Step) is provided.

On the other hand, the moving stirring blade 3 is attached to a ring 11 slidably engaged with a guide shaft 8.
1 is fixedly attached via a support shaft 12 protruding from the peripheral surface of the shaft 1. The other end is provided with a slit 9 of the cylindrical shaft portion 1b.
It is in a state of being greatly protruded to the outside through.

The reaction blade 4 is fixedly attached to one end of a shaft 15. In addition, this shaft 15 is a cylindrical shaft portion 1b.
Through a fixing member 14 fixedly attached to a portion of the opening 10 with a bolt 13, the fixing member 14 is rotatably held by the fixing member 14.

The bevel gear mechanism 5 includes a first helical gear 1 fixedly attached to the other end of the shaft 15 so as to be integrally rotatable.
6 and a pair of second helical gears 17 meshed with the helical gear 16 so as to be integrally rotatable. Among them, the second helical gear 17 is mounted on a support shaft 18 rotatably mounted on the fixed member 14 so as to be integrally rotatable with the support shaft 18. The second on both sides
Helical gear 17 is attached to an independent (separated) support shaft 18.
The second helical tooth of which one of the support shafts 18 faces
It extends to just before the car 17.

The crank mechanism 6 includes a crank plate 19 and a link plate 21 having one end linked to the crank plate 19 via a support shaft 20. this house,
One end of the crank plate 19 is attached to the support shaft 18 so as to be able to rotate integrally with the support shaft 18. On the other hand, the other end of the link plate 21 is rotatably attached to the support shaft 12.

Next, the operation of the stirring and mixing processing apparatus thus configured will be described. First, when the lower end side of the drive shaft 1 is lowered on the ground, the reaction force blades 4 are fixed in the ground.
When the drive shaft 1 is rotated while discharging the improving material in this state, the reaction blade 4 is fixed to the ground or rotates more slowly than the drive shaft 1 rotates. Then, the rotation of the drive shaft 1 rotates the first helical gear 16 side to the second helical gear 17 side between the first helical gear 16 and the second helical gear 17 in the bevel gear mechanism 5. And the support shaft 18 is rotated. At the same time, the crank plate 19 of the crank mechanism 6 is also rotated integrally and moves in the vertical direction, which moves the ring 11 and the moving stirring blade 3 in the vertical direction (the direction of arrows UD in FIGS. 1 and 2). As a force, the ring 11 and the movable stirring blade 3 are guided by the guide shaft 8 and the slit 9 and reciprocated vertically.

Therefore, in the stirring and coupling processing apparatus according to this embodiment, when the drive shaft 1 is rotated together with the fixed stirring blade 2, the movable stirring blade 3 is also integrally rotated with vertical movement. The moving agitating blades 3 cut the ground soil in a substantially horizontal direction, and rotate with the drive shaft 1 while moving the ground soil in the vertical direction. The resistance to the ground soil that is going to rotate together is stopped, and the rotation of the ground soil during this period is stopped. Therefore, the forced stirring by the stirring blades 2 and 3 is efficiently performed. In the above embodiment, the case where the moving stirring blade 3 is provided in one stage is described. However, it is needless to say that such a moving stirring blade 3 may be configured in two stages.

[0017]

As described above, according to the stirring and mixing apparatus according to the present invention, the moving stirring blade rotates while moving the ground soil vertically by the action of the bevel gear mechanism and the crank mechanism. The resistance to the ground soil that is going to rotate together is obtained, and the resistance of the ground soil to stop the rotation of the ground soil can be expected, and effects such as more efficient stirring can be expected.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a main part of a stirring and mixing apparatus according to an embodiment of the present invention, which is partially cut away.

FIG. 2 is a schematic side view partially cut away along the line AA of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drive shaft 2 Fixed stirring blade 3 Moving stirring blade 4 Reaction blade 5 Bevel gear mechanism 6 Crank mechanism

Continued on the front page (72) The creator, Satoshi Matsuzawa 2114-7, Kotsutsumi, Sowa-cho, Sarushima-gun, Ibaraki Prefecture (72) The creator, Hisashi Shizawa 6-3-502, Toyooka, Tama-shi, Tokyo (72) The creator, Akihiro Miyoshi Kanagawa 1758 Kasama Building 202 Kasama-cho, Sakae-ku, Yokohama-shi (72) Inventor Shigeyuki Sakai 592-6 Kawana, Fujisawa-shi, Kanagawa (56) References JP-A-59-38420 (JP, A) (58) Int.Cl. ⁶ , DB name) E02D 3/12 102

Claims (1)

(57) [Scope of request for utility model registration] 1. A stirring blade attached to a drive shaft is rotated,
In a stirring and mixing processing apparatus for mixing and stirring the ground soil and the improving material, a fixed stirring blade fixedly mounted around the drive shaft, and a movable stirring blade mounted to be vertically movable around the drive shaft. A blade, a reaction blade rotatably attached to a lower end of the drive shaft, a bevel gear mechanism interposed between the reaction blade and the movable stirring blade, and driven by rotation of the drive shaft. And a crank mechanism interposed between the bevel gear mechanism and the moving stirring blade, and a crank mechanism for converting driving of the bevel gear mechanism into vertical movement of the moving stirring blade. .