JP4272079B2 - Stirring and mixing equipment - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a vertical stirring and mixing processing apparatus for ground improvement by uniformly agitating and fitting a ground such as soft ground and an improved material such as cement milk in the vertical direction (longitudinal direction).

  As this type of vertical stirring and mixing apparatus, there is one shown in FIGS. 6 and 7 (see, for example, Patent Document 1).

  As shown in FIGS. 6A and 6B, the stirring and mixing apparatus 1 rotates a driving sprocket 4A and a driven sprocket 4B that are rotated by a hydraulic motor 3 at upper and lower ends of a longitudinal frame 2 as a main body of the apparatus. It is supported freely. A plurality of lateral scrapers 6 are attached to the chain 5 spanned between the drive sprocket 4A and the driven sprocket 4B at regular intervals.

Then, as shown in FIG. 7, when the soft ground 9 is improved, the stirring and mixing apparatus 1 is penetrated in the vertical direction in the soft ground 9 via the arm portion 8 a of the crawler body 8, The ground is improved by stirring and mixing the cement milk discharged from the lower end opening 7 a of the attached hardener feed pipe 7 and the soft ground 9 with a sideways scraper 6.
JP 2001-193057 A JP 2000-212953 A

  However, in the conventional stirring and mixing apparatus 1, a plurality of lateral scrapers are disposed at regular intervals between the drive sprocket 4A and the driven sprocket 4B that are rotatably supported by the upper and lower ends of the longitudinal frame 2 as the apparatus body. Since the chain 5 to which the chain 6 is attached is stretched over, the ground of the soft ground 9 can be improved only in the vertical direction, and the soft ground 9 is inclined obliquely with respect to the vertical direction in the middle of the vertical penetration. The ground could not be improved by changing the direction.

  Therefore, the present invention has been made to solve the above-described problems, and is provided with a stirring and mixing treatment device capable of expanding the area of ground improvement by penetrating the apparatus main body in a vertical direction and an oblique direction in the ground. The purpose is to provide.

According to the first aspect of the present invention, the apparatus main body is provided with a stirring blade rotatably via a driving means and an improvement material discharge port for discharging the improvement material is provided, and the apparatus main body is penetrated in a vertical direction in the ground to be in a predetermined position. In the stirring and mixing processing apparatus in which the improving material discharged from the improving material discharge port and the in-situ soil are stirred and mixed by the stirring blade, the apparatus main body includes at least a pair of support main bodies and the lower stage. to constituted by a movable body that swings in a range of a predetermined angle with respect to the support body, while the Ru provided with the stirring blade and the modifying material discharge port to the movable body, wherein the uppermost gear of the movable body lower The lowermost gear of the support main body located at the position is meshed, and the stirring blade is provided on the support shaft of the gear of the movable main body .

  A second aspect of the present invention is the stirring and mixing apparatus according to the first aspect, wherein a plurality of gears meshed with the movable main body are provided, and vertical stirring blades are provided on both sides of the support shaft of each gear. It is characterized by.

  A third aspect of the present invention is the stirring and mixing apparatus according to the first aspect, wherein a plurality of horizontal excavation blades are rotatably provided at the tip of the movable main body, and an improvement material discharge port is provided in the vicinity of the plurality of horizontal excavation blades. Is provided.

As described above, according to the first aspect of the present invention, the apparatus main body is composed of at least a pair of support main bodies and a movable main body that swings within a predetermined angle range with respect to the support main body located at the lower stage. while Ru is provided an improved material discharge port and a stirring blade to the movable body, stirring the bottom of the gear of the support body located on the lower and uppermost gear of the movable body is engaged, the support shaft of the movable body gear Since the wings are provided , the support material and the movable main body constituting the main body of the apparatus are penetrated in the vertical direction in the ground, and the improved material discharged from the improved material discharge port and the original soil are supported by the gear shaft of the movable main body. The ground can be improved by stirring and mixing with the stirring blade provided on the ground, and the ground can be improved by swinging the movable main body by a predetermined angle with respect to the vertical direction from the middle. In this way, by improving the ground by penetrating the movable main body of the apparatus main body in a direction oblique to the vertical direction in the ground, it is possible to expand the area of ground improvement compared to the conventional case where only the vertical direction is performed.

  According to the invention of claim 2, since the plurality of gears meshed with the movable body are provided and the vertical stirring blades are provided on both sides of the support shaft of each gear, the vertical stirring blades of the gears adjacent to each other in the vertical direction are provided. It can be rotated in an alternate direction, the efficiency of stirring and mixing of the improving material and the in-situ soil can be further increased, and the ground improvement can be made uniform.

  According to the invention of claim 3, since the plurality of horizontal excavation blades are rotatably provided at the distal end of the movable main body and the improvement material discharge port is provided in the vicinity of the plurality of horizontal excavation blades, the excavation ability of the ground soil is improved. In addition, the kneading effect (stirring performance) between the improving material and the in-situ soil can be further improved.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a cross-sectional view of a stirring and mixing treatment apparatus according to an embodiment of the present invention viewed from the side, FIG. 2 is a cross-sectional view of the stirring and mixing processing apparatus viewed from the front, and FIG. FIG. 4 is a sectional view of the tip of the stirring and mixing apparatus, and FIG. 5 is a schematic sectional view showing the stirring and mixing state of the stirring and mixing apparatus.

  As shown in FIGS. 1 and 2, the stirring and mixing treatment apparatus 10 has a vertically long apparatus body 11 having a rectangular tube shape. The apparatus main body 11 is suspended along a leader or the like of a construction machine (not shown) so that the apparatus main body 11 can penetrate or pull out in the vertical direction in the ground 50 and a pair of upper and lower support main bodies 12. , 12 'and a movable body 13 supported on a support body 12' positioned at the lower stage of the pair of upper and lower support bodies 12, 12 'so as to be swingable within a predetermined angle range.

  As shown in FIGS. 1 and 2, the pair of upper and lower support bodies 12 and 12 ′ are formed in a metal square tube shape, and the hook-shaped connecting ends 12 a and 12 b that are in contact with each other are connected to a bolt 14 and a nut. 15 is fastened and fixed. A driving sprocket 16 and a driven sprocket 17 are rotatably supported on the upper and lower ends of the support body 12 located in the upper stage via a driving shaft 16a and a support shaft 17a. The drive shaft 16a is rotated by a pair of left and right hydraulic motors (drive means) 20 and 20 attached via brackets 18 on both sides of the upper portion of the support body 12 positioned in the upper stage. In addition, a pair of chains 21 and 21 are spanned between the small diameter tooth portion of the drive sprocket 16 and the small diameter tooth portion of the driven sprocket 17.

  As shown in FIGS. 1 and 2, a pair of upper and lower driven sprockets 22 and 23 are rotatably supported on the upper and lower ends of the support body 12 'located at the lower stage via the respective support shafts 22a and 23a. It is. The upper driven sprocket 22 meshes with the lower driven sprocket 17 on the lower side of the support body 12 located in the upper stage. Further, a pair of chains 24 and 24 are spanned between the small diameter tooth portions of the pair of upper and lower driven sprockets 22 and 23.

The movable main body 13 is formed in a metal square tube shape, and a plurality of gears 25 to 29 formed by meshing from the upper end portion to the lower portion in the movable main body 13 can be freely rotated via the respective support shafts 25a to 29a. I support it. U-shaped vertical stirring blades (stirring blades) 31 are attached to both sides of the respective support shafts 25a to 29a of the gears 25 to 29, respectively. The uppermost gear 25 meshes with a driven sprocket (gear) 23 on the lower side of the support body 12 ′ located on the lower stage. The hydraulic motor 20, the sprockets 16, 17, 22 and 23, the chains 21 and 24, and the gears 25 to 29 constitute driving means for rotating the vertical stirring blades 31.

  As shown in FIGS. 2 and 3, the support shaft 25a of the uppermost gear 25 is inserted into the mounting holes 19a below the pair of brackets 19, 19 fixed to both sides of the lower support body 12 '. Through the support shaft 25a, the movable main body 13 is supported so as to be swingable by a predetermined angle with respect to the support main body 12 'positioned at the lower stage. Further, the base ends of the pair of air cylinders 32 and 32 are pivotally supported on the left and right sides of the lower end of the support body 12 ′ located in the lower stage, and the tip of the piston rod 32 a of each air cylinder 32 is Pins are pivotally supported on the left and right sides of the upper end of the movable body 13. As the piston rods 32a advance and retract, the movable main body 13 swings in the front-rear direction within a range of a predetermined angle with respect to the support main body 12 'positioned at the lower stage. As shown in FIGS. 1 and 3, a bellows-like cover 33 is covered between the lower end portion of the support body 12 ′ located at the lower stage and the upper end portion of the movable body 13.

  Further, as shown in FIGS. 2 and 4, improvement material discharge nozzles (improvement material discharge ports) 34 and 34 for discharging the improvement material A such as cement slurry are respectively provided on both sides of the lower portion of the movable body 13. It is. Further, a main horizontal excavation blade 35 is provided at the center of the bottom portion 13a constituting the tip of the movable body 13, sub horizontal excavation blades 36 and 36 are provided on both sides thereof, a drive shaft 35a and cylindrical support shafts 36a. And are rotatably supported via each. A drive gear 37 is fixed at the center of the drive shaft 35a, and a base end of the drive shaft 35a is fixed to a hydraulic motor (drive means) 38.

  Further, as shown in FIG. 4, a driven gear 39 is fixed to the center of each support shaft 36 a, and each driven gear 39 meshes with the drive gear 37. Further, an improvement material discharge nozzle (an improvement material discharge port) 41 for discharging the improvement material A such as cement slurry is provided in the vicinity of each sub horizontal excavation blade 36 at the tip of each support shaft 36a.

  Each improvement material discharge nozzle 34 is connected to a piping 42 for supply of the improvement material. Each improvement material discharge nozzle 41 is connected to an improvement material supply pipe 44 through a cylindrical support shaft 36 a and a swivel 43. As a result, the device main body 11 penetrates in the vertical direction in the ground 50 and the improved material A and the in-situ soil 51 discharged from the improved material discharge nozzles 34 and 41 at a predetermined position are transferred to the vertical stirring blades 31 and horizontal The excavating blades 35 and 36 are used for stirring and mixing.

  According to the stirring and mixing processing apparatus 10 of the above-described embodiment, the apparatus main body 11 is movable so as to swing within a predetermined angle range with respect to the pair of upper and lower support bodies 12 and 12 'and the lower support body 12'. Since the movable body 13 is provided with the improving material discharge nozzle 34 and the vertical stirring blade 31, the support bodies 12, 12 ′ constituting the apparatus body 11 and the movable body 13 are connected to the ground 50. The improvement material A penetrating in the vertical direction and discharged from the improvement material discharge nozzle 34 can be ground and improved by stirring and mixing the in-situ soil 51 with the vertical stirring blades 31, and in the middle of the vertical direction. Thus, the ground can be improved by swinging the movable body 13 by a predetermined angle. Thereby, as shown in FIG. 5, the movable main body 13 of the apparatus main body 11 can be penetrated in the vertical direction and the diagonal direction in the ground 50, and the middle part of the vertical direction can be improved into a substantially fan-shaped ground. The area of improvement can be expanded as compared with the conventional area only in the vertical direction.

  Further, the movable main body 13 is provided with a plurality of meshing gears 25 to 29, and the vertical stirring blades 31 are provided on both sides of the support shafts 25a to 29a of the gears 25 to 29, respectively. The vertical stirring blades 31 of the gears 25 to 29 can be rotated in alternate directions, the efficiency of stirring and mixing of the improving material A and the in-situ soil 51 can be further increased, and the ground improvement can be made uniform. Can do.

  Further, the horizontal excavation blades 35 and 36 are rotatably provided on the bottom portion 13a that forms the tip of the movable main body 13, and the improvement material discharge nozzle 41 is provided in the vicinity of the horizontal excavation blades 36. The kneading effect (stirring performance) of the improving material A and the in-situ soil 51 can be further improved.

  In addition, according to the said embodiment, although a pair of upper and lower support main bodies were connected, you may connect three or more support main bodies. Further, the improvement material is not limited to cement slurry or the like, and other fluids or powders such as high and low pressure air may be supplied to the improvement material supply pipe and the improvement material discharge nozzle.

It is sectional drawing which looked at the stirring mixing processing apparatus of one Embodiment of this invention from the side surface side. It is sectional drawing which looked at the said stirring and mixing processing apparatus from the front side. It is explanatory drawing of the rocking | fluctuation part of the said stirring and mixing processing apparatus. It is sectional drawing of the front-end | tip part of the said stirring and mixing processing apparatus. It is a schematic sectional drawing which shows the stirring mixing process state of the said stirring mixing processing apparatus. (A) is a front view which shows the conventional stirring and mixing processing apparatus, (b) is a side view of the stirring and mixing processing apparatus. It is a side view which shows the use condition of the said conventional stirring mixing processing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Stirring mixing processing apparatus 11 Apparatus main body 12,12 'Support main body 13 Movable main body 13a Bottom part (tip)
20 Hydraulic motor (drive means)
25-29 Gear 25a-29a Support shaft 31 Vertical stirring blade (stirring blade)
34, 41 Improved material discharge nozzle (improved material discharge port)
35, 36 Horizontal excavation blades 50 Ground 51 In-situ soil A Improvement material

Claims (3)

The apparatus body is provided with a stirring blade rotatably via a driving means and an improvement material discharge port for discharging the improvement material. The apparatus body penetrates in the vertical direction in the ground and is inserted into the apparatus body at a predetermined position from the improvement material discharge port. In the stirring and mixing processing apparatus configured to stir and mix the improved material to be discharged and the in-situ soil with the stirring blade,
The apparatus main body is composed of at least a pair of support main bodies and a movable main body that swings within a predetermined angle range with respect to the support main body located at the lower stage, and the improvement material discharge port and the stirring blade are provided in the movable main body. while the Ru provided, and wherein the top of the gear of the movable body is engaged with the bottom of the gear of the support body located on the lower, provided with the stirring blade to the shaft of the gear of the movable body A stirring and mixing processing device. The stirring and mixing treatment device according to claim 1,
An agitation and mixing treatment apparatus provided with a plurality of gears meshed with the movable body, and provided with vertical agitation blades on both sides of a support shaft of each gear. The stirring and mixing treatment device according to claim 1,
A stirring and mixing processing apparatus, wherein a plurality of horizontal excavation blades are rotatably provided at a tip of the movable main body, and an improvement material discharge port is provided in the vicinity of the plurality of horizontal excavation blades.

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