JP2566552Y2 - Stirring mixing equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention is particularly applicable to the formation of columnar piles or the improvement of ground strength by mixing in situ soil with a mortar, cement milk, powdery or other improving material in soft ground. The present invention relates to a stirring and mixing apparatus used.

[0002]

2. Description of the Related Art In a construction using a stirring and mixing processing apparatus, specifications that are optimal to the construction ground conditions and economically advantageous are determined. For example, a single-shaft system having a single rotating shaft provided with stirring blades, A multiple shaft system in which a plurality of rotating shafts are fixedly connected by a connecting member is selected.

[0003] In practice, various types of improvement techniques have been proposed, especially since the earth mass located between the stirring blades is likely to rotate together and the quality of the mixture between the in-situ soil and the improving material greatly affects the quality. As an improvement technique, Japanese Patent Application Laid-Open No. 62-8622
As disclosed in Japanese Patent Application Publication No. 0-204, etc., a cutting blade (reversing blade) is attached to a rotating shaft portion near a stirring blade via a transmission, and the stirring blade and the reverse rotation blade rotate at relatively different speeds depending on the transmission. There is a structure in which resistance wings (reaction force plates) are provided so as to freely rotate in a loosely fitted state with respect to the rotation axis, and co-rotation of the earth mass is efficiently prevented.

[0004]

[0006] By the way, such a stirring and mixing processing apparatus usually uses a stirrer, a counter-rotating blade, a reaction plate and the like manufactured as a standard product according to the construction specifications.
It is completed by assembling it with a rotating shaft of a predetermined length, attaching a stirring blade, etc., and transported to the construction site. For this reason, at the construction site, depending on the construction situation, for example, if you want to change the length of the reaction plate, or if you want to change or fine-tune the rotation axis interval in the case of a multiple shaft system, you can quickly respond to it. Costly and may affect the construction period.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stirring and mixing apparatus capable of responding to use conditions immediately with a simple structure and at a minimum cost.

[0006]

According to a first aspect of the present invention, there is provided a stirrer / mixer according to the present invention, which is rotatably mounted on a rotating shaft and is provided with a planetary gear mechanism. A bearing member for attaching a shaft for pivotally supporting the member is provided, and a connection fitting smaller than a stirring blade for detachably attaching another member is fixed to an outer peripheral portion of the bearing member. In the case of the single-axis system,
A reaction force plate can be attached to the fitting as another member. Further, in the case of a multiple shaft system using a plurality of the rotating shafts, the brackets of the rotating shafts can be connected and fixed to each other via another member.

[0007]

The connection fitting having the above construction is constructed and assembled as a part of the bearing member of the planetary gear mechanism, and is installed on the rotating shaft in this assembled state. At the time of construction, the specifications of the stirring and mixing apparatus are determined according to the conditions of the improved ground to be constructed. For example, a single-shaft system or a multiple-shaft system is selected. And, by providing a dedicated bracket for connection as in the present invention, for example, in the case of a single axis system, a reaction force plate is attached to the bracket, and in the case of a multiple shaft system, a rotating shaft bracket is used by using a bracket of each rotating shaft. Since they can be connected and fixed to each other, it is possible to immediately cope with various construction specifications, and fine adjustment can be easily performed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway view of a main part of a stirring and mixing apparatus to which the present invention is applied. In the figure, a stirring and mixing apparatus 1 is provided with excavating means 3 provided at the lower end of a rotating shaft 2 (see FIGS. 2 and 3).
And a stirring blade 4 composed of two or more stages provided around the axis of the rotating shaft 2, provided between the stirring blades 4 at the upper and lower stages around the axis of the rotating shaft 2, and via a planetary gear mechanism 5. A pair of rotating reversing blades 6 and a connection metal fitting 7 are provided.

The planetary gear mechanism 5 includes an external gear 8 formed around the rotation shaft 2, a bearing member 9 that is freely fitted to the rotation shaft 2 and freely rotates, and is attached to the bearing member 9. A shaft 10, a planetary gear 11 pivotally supported by the shaft 10 and meshing with the external gear 8, and an outer cylinder 13 having an internal gear 12 meshing with the planetary gear 11. And planetary gear 1
A plurality 1 is rotated about a shaft 10 by rotation of a rotating shaft 2. When the planetary gear 11 is rotated, the internal gear 12 meshing with the planetary gear 11 is driven, and the outer cylinder 13 is also rotated in conjunction therewith. As a result, the reversing blade 6 fixed to the outer cylinder 13 is rotated. It is rotated in a direction opposite to the rotation shaft 2.

The bearing member 9 has a structure in which the lower periphery is tapered, and the connection fitting 7 is integrally fixed to the tapered portion by welding. The metal fitting 7 is made of a steel material, has a relatively small length (at least smaller than the stirring blade 4), and is provided at a plurality of locations substantially equally dividing the periphery of the bearing member 9. Further, the metal fitting 7 is provided with connection means by which the other member 14 can be easily connected or fixed thereto, for example, a mounting hole 7a in the case of bolting.

FIGS. 2 and 3 show different uses of the connection fitting. The mixing operation of the stirring and mixing apparatus 1 is the same as that of the apparatus described in, for example, Japanese Patent Application Laid-Open No. 62-86220 or Japanese Utility Model Application No. 3-103428, which was previously proposed by the present applicant, and will not be described. Then, the operation and effect unique to the present invention will be described in detail. FIG. 2 shows an example in which a reaction force plate 24 is attached to each of the connection fittings 7. In this example, it is assumed that the stirring and mixing apparatus 1 is used as a single-shaft system, and the reaction plate 2 is formed by bolts 15 and nuts using the mounting holes 7 a of the metal fittings 7.
4 is fixed. The reaction force plate 24 is attached so as to be longer than the stirring blade 2, and separately or synergistically prevents the co-rotation of the earth mass with the reversing blade 6.

FIG. 3 assumes a case where the rotary shaft 2 is used as a multiple shaft system in which a plurality of rotary shafts 2 are used simultaneously. In such a dual shaft system, as shown in, for example, Japanese Patent Application Laid-Open No. 58-54121, a connecting member for maintaining a constant interval is interposed because each rotating shaft 2 receives an external force such as earth resistance. The connecting metal fitting 7 of the present invention enables each end of the connecting plate 34 to be fixed and operated by bolts 15 and nuts so that the rotating shafts 2 can be connected and fixed at regular intervals very easily. It is also simple. Further, at the time of construction, the above-described reaction force plate can be attached to another connection fitting 7 as needed.

In the present invention, various known techniques can be applied as they are or with improvements, for example, to the structure for supplying the excavating means 3 and the improving material, etc. other than the main configuration described in the embodiment.

[0014]

[Effects of the Invention] As described above, in the stirring and mixing processing apparatus of the present invention, the structure provided with the connection metal fittings is used.
For example, in the case of the single-shaft system, a reaction force plate can be attached to the metal fitting, and in the case of the multiple-shaft system, it can be connected and fixed by using metal fittings of each rotating shaft. Therefore, although the cost of the connection fitting itself is added to the conventional structure, it is possible to immediately respond to various construction specifications even at the construction site, and furthermore, it is possible to respond with a minimum cost. As a result, the present invention also facilitates fine adjustment according to the construction situation, so that the reliability of construction using the same can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway view showing a main structure of a stirring and mixing apparatus according to the present invention.

FIG. 2 is a side view showing a state in which a reaction force plate is connected and fixed to a connection fitting when the device is used as a single-axis system.

FIG. 3 is a side view showing a state where the rotating shafts are connected and fixed to each other via a connecting bracket when the device is used as a multiple shaft system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Stirring / mixing processing apparatus 2 Rotating shaft 4 Stirrer blade 5 Planetary gear mechanism 6 Reversing blade 7 Connection metal fitting 14 Other member 24 Reaction plate (another member example) 34 Connecting plate (another member example)

Claims (3)

(57) [Scope of request for utility model registration] 1. A stirring blade fixed to a rotating shaft,
A stirring and mixing apparatus for improving the ground, comprising: a reversing blade rotating via a planetary gear mechanism provided around the rotation axis; a planetary gear of the planetary gear mechanism rotatably provided on the rotation axis. A bearing member for attaching a shaft pivotally supporting
A stirring / mixing processing apparatus characterized by fixing a connection fitting smaller than a stirring blade for detachably attaching another member to an outer peripheral portion of the bearing member. 2. Another member attached to the metal fitting,
The stirring and mixing apparatus according to claim 1, wherein the reaction and mixing plate is a reaction plate provided to be longer than the stirring blade. 3. The stirring and mixing apparatus according to claim 1, wherein a plurality of the rotating shafts are used, and fittings of the rotating shafts are connected and fixed via the other member.