JP3852683B2 - Stir kneading head of stirring kneader - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an agitating and kneading machine for agitating and kneading cement-based milks and cement-based powders to gravel or earth and sand containing excavated cobblestones attached to the tip of a boom arm instead of an excavator bucket of a construction hydraulic excavator, for example. The present invention relates to a stirring and kneading head used.
[Prior art]
Conventionally, when constructing concrete structures and earth structures such as related facilities including dam bodies, seawalls, riverbanks, related facilities including embankments, and related facilities including sabo dams, the ground is excavated with, for example, a hydraulic excavator. Then, the formwork is assembled and ready-mixed concrete is cast into the formwork.
[0002]
Further, after curing of the cast concrete, the formwork is removed and the portion is backfilled. When the foundation is completed, the structure is provided on the upper part.
[0003]
However, since the ready-mixed concrete is transported from a concrete manufacturing factory by a mixer truck, a large amount of work is required.
[0004]
Therefore, in recent years, gravel containing earth cobblestone excavated at or near the site and earth and sand itself has been used as a material for concrete, and it has also been proposed to be applied to soil improvement of earth and sand and gravel layers. Yes.
[0005]
Here, the excavator excavates the ground near the ground where the structure is to be built or improved with the shovel bucket attached to the tip of the boom arm, and the gravel and crust including cobbles included in the excavated ground are brought near. The piles and the gravel and the earth and sand containing the piled cobbles are laid at a certain height (several tens of centimeters) at the excavation site.
[0006]
And the shovel bucket attached to the front-end | tip of a boom arm is removed, and it replaces with this and becomes a structure which attaches a stirring kneading head.
[0007]
Also, prepare a slurry plant or cement silo near the site, attach a slurry injection unit or powder injection unit to the boom arm, and arrange slurry or powder to solidify the gravel and soil including cobblestones excavated and laid. It can be kneaded with an agitating and kneading head while spraying onto gravel and earth and sand containing the cobblestone.
[0008]
Then, after curing the concrete of the part and the improved ground, the gravel and earth and sand containing cobblestones were laid on it, and the kneading process was performed again, and finally the foundation of the overlay and the improved ground were formed. Related facilities including the dam body and concrete structures such as rivers and coasts are provided on the foundation or on the improved ground.
[0009]
Depending on the ground, the excavation work with the shovel bucket can be omitted, and the kneading work can be performed simultaneously with the stirring and kneading head.
[0010]
As described above, it is possible to dig up the site and procure it as a material for concrete, or to use the supporting ground where the supporting capacity is insufficient as it is as a kneading vessel and divert the excavator for excavation as a stirring kneader, greatly reducing costs. Construction was to be carried out efficiently.
[0011]
[Problems to be solved by the invention]
Thus, the present invention is a further improvement to the stirring and kneading head of a conventionally used stirring and kneading machine, and can perform stirring and kneading more efficiently than conventional methods, resulting in the formation of a high-quality concrete foundation or structure. In addition to being able to do so, it can be applied to ground improvement such as gravel layers and upper sand that have been impossible until now. Another object of the present invention is to provide an agitation / kneading head for an agitation / kneader capable of significantly reducing the operation cost as a result of providing an agitation / kneading head having improved durability as compared with the prior art.
[Means for Solving the Problems]
The stirring and kneading head of the stirring and kneading machine according to the present invention is a stirring and kneading head used in a stirring and kneading machine for cement-based milks and cement-based powders to be filled in an excavated ground. The support rod is detachably attached to the support shaft and is configured to be rotatable 180 degrees about the axis direction as a rotation axis, a pair of stirring and kneading drums provided on both sides of the support rod, and an outer peripheral surface of the stirring and kneading drum. An agitation kneading head of an agitation kneader comprising a plurality of agitated kneading blades, wherein the agitation kneading blades are divided into approximately four rows toward the drum axial direction on the outer peripheral surface of the agitation kneading drum. In total, 12 to 30 sheets are dispersed and planted in each row, and the three rows on the support rod side are planted in a substantially vertical direction and are located outside the stirring and kneading drums. Stir kneading blades planted in rows are outside The length of the stirring and kneading blades planted on the inner side of the stirring drum is set to be longer than the length of the stirring and kneading blades planted on both outer sides of the stirring drum. Composed of short lengths,
A plurality of auxiliary stirring and kneading blades projecting outward are respectively planted in circular positions at positions near the outer peripheral edge of the pair of stirring and kneading drum axially outer side surfaces , or A round bar-shaped reinforcing member is fixed to the outer peripheral surface of the stirring and kneading blade so as to intersect in a substantially twill shape, a substantially striped shape, and a substantially lattice shape, or a round bar-shaped reinforcement member is provided on the outer peripheral surface of the auxiliary stirring and kneading blade. The member is characterized in that it is fixed by crossing in a substantially twill shape, a substantially striped shape and a substantially lattice shape , or a long plate-like reinforcing band plate is attached to the outer peripheral surface of the stirring and kneading drum, The outer peripheral surface of the drum is reinforced, or an arbitrary stirring and kneading blade planted on the stirring and kneading drum is provided with a protrusion protruding from the side surface of the stirring and kneading blade. .
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the drawings.
[0012]
The stirring kneading head 1 used in the stirring kneading machine according to the present invention includes a support rod 2, a pair of stirring kneading drums 3, 3, and a plurality of stirring kneading blades 4 planted on the outer peripheral surface of the stirring kneading drum 3. It is configured with.
[0013]
The support rod 2 is detachably attached at the boom arm tip 5 of the agitating and kneading machine, and is configured to rotate 180 degrees with the axial direction of the support rod 2 as the rotation axis.
[0014]
A pair of agitating and kneading drums 3 and 3 are pivotally supported on both sides of the support rod 2 so as to be able to rotate with a drum rotating shaft portion provided in the direction of the drum axis as a rotating shaft.
[0015]
A plurality of stirring and kneading blades 4 are planted on the cylindrical outer peripheral surfaces of the pair of stirring and kneading drums 3.
[0016]
Here, the planting state of the stirring and kneading blade 4 will be described.
[0017]
As understood from FIG. 1, the cylindrical outer peripheral surface of the agitating and kneading drum 3 is divided into, for example, four rows in the axial direction of the agitating and kneading drum 3, and a plurality of each row is planted at intervals. ing. Moreover, the three rows from the side of the support rod 2 are planted in a substantially vertical direction as understood from FIG. 1, but the rows located outside the drums 3 are about 70 degrees outward. Tilt and planted.
[0018]
When such a stirring and kneading blade 4 is in the planted state, cement-based milks and cement-based powders can be efficiently stirred and kneaded into gravel or earth and sand containing cobblestone as compared with the prior art.
[0019]
Here, the number of the agitating and kneading blades 4 is about 6 to 15 per one agitating and kneading drum 3, and the length is 10 centimeters to 50 centimeters, and the width is 5 centimeters to 10 centimeters. The thickness is 1.0 centimeters to 5.0 centimeters.
[0020]
The length of the stirring and kneading blade 4 planted inside the drum 3 is preferably short, and the length of the stirring and kneading blade 4 planted on both outer sides of the drum 3 is preferably long. Thus, the stirring and kneading blades 4 having different lengths can be freely combined.
[0021]
Further, as the material of the stirring and kneading blade 4, a steel material is commercially available in advance, and it is preferable to use it from the viewpoint of cost and the ability to obtain a product easily and in large quantities. However, if the stirring and kneading blade 4 is made of the steel material, it will be worn at a relatively early time due to frequent stirring and kneading operations. Therefore, as shown in FIG. 5, a round bar-like reinforcing member 6 is fixed by welding or the like as shown in FIG. To do.
[0022]
However, if reinforced in this way, even the agitating and kneading blade 4 made of steel can withstand a considerably long period of use. Therefore, it is possible to provide a stirring and kneading blade 4 that is inexpensive and that can be easily obtained, and that has excellent durability.
[0023]
Next, as shown in FIG. 6, a plurality of auxiliary stirring and kneading blades 7 projecting outward are provided at circular positions in the vicinity of the outer peripheral edge of the outer surface in the drum axial direction of the pair of stirring and kneading drums 3. Is standing.
[0024]
The auxiliary stirring and kneading blades 7 are not present in conventional stirring and kneading heads, and each auxiliary stirring and kneading blade 7 stays at a position near the outer surface in the axial direction of the stirring and kneading drum 3 by being planted. Cement milk and cement powder can be sufficiently agitated and kneaded into gravel and crust containing cobblestone.
[0025]
Thus, the auxiliary stirring and kneading blades 7 are preferably set to about 2 to 5 on the outer surface of the drum on one side, and the length thereof is about 10 centimeters.
[0026]
Since this auxiliary stirring and kneading blade 7 is also formed of a steel material, it is preferable that the round bar-shaped reinforcing member 6 having a substantially twill shape, a substantially strip shape, and a substantially lattice shape is fixed to the entire outer peripheral surface by welding or the like.
[0027]
As in the case of the agitating and kneading blade 4, the auxiliary agitating and kneading blade 7 can be used for a considerably long period of time even if it is made of a steel material if it is reinforced with a round bar-like reinforcing member 6. It is possible to provide an auxiliary stirring and kneading blade 7 that is inexpensive, easily available, and has excellent durability.
[0028]
By the way, when the target soil to be kneaded and kneaded is a clay soil mixed with gravel, for example, a protrusion protruding from any side of the stirring and kneading blade 4 with a length within 5 cm from the side of the stirring and kneading blade 4 It is preferable to form the product 9 or use the stirring and kneading blade 4 provided with the projections 9 in advance.
[0029]
If such a stirring and kneading head 1 is used, even if the target soil to be stirred and kneaded is a viscous soil as described above, the uniformity of stirring accuracy can be sufficiently maintained. Here, the replacement of the stirring and kneading blade 4 provided with the protrusions 9 and the stirring and kneading blade 4 not provided with the protrusions 9 is not limited in any way. It is conceivable to replace the stirring and kneading head 1 in which the stirring and kneading blade 4 provided with 9 is planted.
[0030]
Moreover, you may attach the said protrusion 9 to the arbitrary stirring kneading blade 4 on the spot by welding etc. later.
[0031]
In addition, the shape of the protrusion 9 is not limited at all, and may be any shape as long as the protrusion length is within 5 centimeters.
[0032]
Next, on the outer peripheral surface of the stirring and kneading drum 3, a long plate-shaped reinforcing band plate 8 is directed so that the length direction of the reinforcing band plate 8 is in the circumferential direction of the drum 3 or in a direction perpendicular to the circumferential direction. The outer peripheral surface of the stirring and kneading drum 3 is reinforced.
[0033]
Usually, the stirring and kneading drum 3 is formed by bending a steel plate into a drum shape, for example, and therefore it must be thick enough to be bent. However, with such a thickness, the agitating and kneading drum 3 itself is worn away due to long-term work, and it becomes recessed or damaged.
[0034]
And as a result, the dent and breakage shorten the life of the stirring and kneading head 1 itself. That is, no matter how much the stirring kneading blade 4 or the auxiliary stirring kneading blade 7 is reinforced, if the stirring kneading drum 3 itself is worn, dented or damaged, the stirring kneading head 1 cannot be used.
[0035]
The reinforcing strip 8 may be attached to the drum outer peripheral surface by welding or the like. When sticking the reinforcing strip 8, as is understood from FIG. 6, the reinforcing strip 8 may be arranged so that the length direction of the reinforcing strip 8 is parallel to the rotation direction of the outer peripheral surface of the drum, as shown in FIG. 7. Further, the reinforcing band plate 8 may be arranged so that the length direction thereof is parallel to the width direction of the drum. As a result, the agitating and kneading drum 3 is not worn, dented or damaged even after a long period of agitating and kneading work, and as a result, the durability of the agitating and kneading head 1 itself can be remarkably improved at low cost.
【The invention's effect】
As described above, according to the present invention, it is possible to efficiently stir and knead cement-based milks and cement-based powders to gravel or earth and sand containing cobblestone as compared with conventional stirring and kneading heads, resulting in good quality. Concrete foundations or structures and improved ground can be formed.
[0036]
In addition, as a result of providing a stirring and kneading head having improved durability compared to conventional stirring and kneading heads, it is possible to provide excellent effects such as a significant reduction in operating costs.
[Brief description of the drawings]
FIG. 1 is a front view of a schematic configuration of a stirring and kneading head unit according to the present invention.
FIG. 2 is a side view of a schematic configuration of a stirring and kneading head unit according to the present invention, which is a diagram obtained by rotating the stirring and kneading head unit by 90 degrees in FIG.
FIG. 3 is a front view of a schematic configuration of a stirring and kneading head unit according to the present invention, showing the arrangement of auxiliary stirring and kneading blades 7;
4 is a side view of a schematic configuration of a stirring and kneading head unit according to the present invention, showing an arrangement state of auxiliary stirring and kneading blades 7, in which the stirring and kneading head unit is rotated 90 degrees in FIG. is there.
FIG. 5 is a side view of a schematic configuration of a stirring and kneading head unit according to the present invention, in which a round bar-shaped reinforcing member is disposed on a stirring and kneading blade, and a reinforcing strip is disposed on a stirring drum.
FIG. 6 is a front view of a schematic configuration of a stirring and kneading head unit according to the present invention, showing a state in which a reinforcing band plate is arranged with respect to a stirring and kneading drum.
7 is a front view of a schematic configuration of a stirring and kneading head unit according to the present invention, and is a view showing another arrangement state of a reinforcing strip in FIG. 6. FIG.
FIG. 8 is a front view of a schematic configuration of a stirring and kneading head unit according to the present invention, showing a configuration in which protrusions are provided on an arbitrary stirring and kneading blade.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Stirring kneading head 2 Supporting rod 3 Stirring kneading drum 4 Stirring kneading blade 5 Boom arm tip 6 Round bar-shaped reinforcing member 7 Auxiliary stirring kneading blade 8 Reinforcement strip 9 Projection

Claims (5)

A stirring and kneading head used in a stirring and kneading machine for cement-based milks and cement-based powders to be filled in excavated ground,
A support rod that is detachably attached at the tip of the boom arm of the stirring kneader, and is configured to be rotatable 180 degrees about the axis direction as a rotation axis; a pair of stirring kneading drums provided on both sides of the support rod; A stirring and kneading head of a stirring and kneading machine provided with a plurality of stirring and kneading blades planted on the outer peripheral surface of the stirring and kneading drum,
The stirring and kneading blades are divided into approximately four rows on the outer peripheral surface of the stirring and kneading drum in the direction of the drum axis, and are dispersed in a total of 12 to 30 sheets, and are respectively planted in the rows.
Three columns of support杆側causes substantially erected toward the vertical direction, stirring and kneading blades planted in row positioned on each outer side of the stirring-kneading drum by erected in an inclined approximately 70 degrees outward obliquely Become
The length of the stirring kneading blade planted inside the stirring drum is configured to be shorter than the length of the stirring kneading blade planted on both outer sides of the stirring drum,
A plurality of auxiliary agitation kneading blades projecting outward are respectively planted at circular intervals at positions near the outer peripheral edge of the pair of agitation drum axial direction outer side surfaces,
A stirring kneading head of a stirring kneader characterized by the above. 2. The stirring and kneading head of the stirring and kneading machine according to claim 1, wherein a round bar-like reinforcing member is fixed to the outer peripheral surface of the stirring and kneading blade so as to intersect with each other substantially in a twill shape, a substantially striped shape, and a substantially lattice shape. The stir kneader according to claim 1 or 2, wherein a round bar-shaped reinforcing member is fixed to the outer peripheral surface of the auxiliary stirring kneading blade so as to intersect in a substantially twill shape, a substantially striped shape, and a substantially lattice shape. Stir kneading head. 4. The stirring and kneading according to claim 1, wherein the drum outer peripheral surface is reinforced by sticking a long plate-shaped reinforcing band plate to the outer peripheral surface of the stirring and kneading drum. Stirring kneading head of the machine. The protrusions protruding from the side surfaces of the stirring and kneading blades are provided on any stirring and mixing blades planted on the stirring and kneading drum. The stirring kneading head of the stirring kneader described.

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