JP4578395B2 - Improvement material supply device for soil improvement machine - Google Patents

Description

  The present invention relates to an improvement material supply apparatus for a soil improvement machine, and more particularly, to an improvement material supply apparatus for a soil improvement machine in which an adjustment range of an improvement material supply amount is expanded.

  2. Description of the Related Art A soil improvement machine configured to spray and mix a soil quality improving material (mainly a self-hardening solidified material such as cement or quicklime) to soil in order to improve the soil quality of a road base or the like is widely known. Generally, a ring feeder type improving material supply device is used as a means for mixing the soil improving material into the soil at a predetermined ratio in the soil improving machine (Patent Documents 1, 2, etc.).

  5 and 6 show the configuration of a conventional ring feeder type improved material supply device. As shown in FIG. 6, the feeder base 1 having a circular planar shape is coupled to the frame F of the soil improvement machine by bolts B, and a feeder motor 2 is attached to the center of the lower surface of the feeder base 1. The shaft of the feeder motor 2 protrudes upward from the feeder base 1, and the ring feeder 4 attached to the shaft 3 rotates together with the shaft 3.

  The ring feeder 4 is composed of a central hub portion 5, a plurality of scraper fins 6 extending radially from the hub portion 5, and a ring 7 surrounding the outer end of the scraper fin 6, and in this example, an improved material in the ring 7 The accommodation space is divided into 10 segments by 10 scraper fins 6.

  An outer ring 8 surrounding the ring feeder 4 is fixed to the feeder base 1, and there is a slight gap between the outer periphery of the ring 7 of the ring feeder 4 and the inner periphery of the outer ring 8. A funnel-shaped improvement material tank 9 whose diameter increases upward is coupled to the upper edge of the outer ring 8, and a partition plate 10 that shields the upper surface of the ring feeder 4 by about half is provided on the outer ring 8. It has been.

  FIG. 5 shows the inside of the ring 7 with a part of the partition plate 10 cut out, and a square hole 11 is formed at a location covered with the partition plate 10 of the feeder base 1, and the lower surface of the feeder base 1. A chute 12 that matches the square hole 10 is attached to the base.

  When the improvement material is put into the improvement material tank 9, the improvement material falls to a portion not shielded by the partition plate 10 of the ring feeder 4, and is formed by the ring 7, the hub portion 5 and the scraper fin 6 of the ring feeder 4. The improvement material is filled into the space to be formed, and when the improvement material moves to the position of the square hole 11 of the feeder base 1 as the ring feeder 4 rotates, it falls through the chute 12.

When the ring feeder 4 rotates, the improvement material in the segment of the ring feeder 4 is worn by the partition plate 10 at the upper end position of the ring 7, and the improvement material corresponding to the height of the segment sequentially falls from the chute 12. The amount of improvement material supplied per rotation of the ring feeder is the volume of 10 segments formed by the hub part 5 of the ring feeder 4, the ring 7 and the scraper fins 6, and per unit time depending on the rotational speed during actual work. The improvement material supply amount is controlled.
JP-A-9-104533 Japanese Patent Publication No. 6-51509

  Conventional improvement material supply devices control the supply amount of improvement material per unit time according to the rotation speed of the ring feeder, and the rotation speed adjustment range of the ring feeder is the feeder motor (hydraulic motor, electric motor, pneumatic motor, etc. ) Is limited to the range between the minimum rotation speed and the maximum rotation speed. However, in order to be able to meet the demands of various soil quality and improved quality, it is advantageous that the variable range of the improved material supply amount is wider.

  Therefore, a technical problem to be solved arises in order to expand the variable range of the improved material supply amount of the improved material supply apparatus, and the present invention aims to solve the above-described problem.

  The present invention is proposed to achieve the above object, and a feed rotor having a plurality of vertical scraper fins extending radially from a hub portion is rotatably mounted on a feeder base, and a rotational drive mechanism by a motor is provided. An outer ring that is connected to the feed rotor and surrounds the feed rotor is provided on the feeder base, and an improvement material discharge port is formed at a position displaced from the feed rotor shaft inside the outer ring of the feeder base. A partition plate that covers a part of the upper surface of the outlet and the feed rotor from above is provided on the outer ring, a soil improvement material is introduced onto the feed rotor, and when the feed rotor is driven to rotate, a certain amount per rotation of the feed rotor Of the soil improvement machine configured to discharge the improved material through the improved material discharge port. In the material supply device, a feed amount adjusting member that partially shields the segment formed by the radial scraper fins is formed detachably with respect to the segment, and the feed rotor is rotated by attaching and detaching the supply amount adjusting member. It is an object of the present invention to provide an improvement material supply device for a soil quality improvement machine characterized in that the amount of improvement material supply per unit can be adjusted.

  In addition, a vertical separator that connects the respective radial intermediate portions of the adjacent scraper fins is provided, and an inner part or an outer part divided by the vertical separator of each segment is shielded by the supply amount adjusting member. The improvement material supply apparatus of a soil improvement machine is provided.

  The supply amount adjusting member provides an improvement material supply device for a soil improvement machine that is a fan-shaped plate that shields a part of the segment.

  Further, the supply amount adjusting member provides an improvement material supply device for a soil improvement machine which is a sector block that shields a part of the segment.

  In the above configuration, by mounting the supply amount adjusting member on the feed rotor, the improvement material supply amount per one rotation is lowered, and the lower limit of the small amount supply by the low rotation speed is expanded as compared with the conventional type.

  The improvement material supply device of the soil improvement machine according to the present invention has a supply amount adjustment member that partially shields the segments of the feed rotor, so that the supply can be made within the range of the adjustment material supply amount adjustment range by conventional rotational speed control. The amount can also be controlled, improving the responsiveness to various soil and improved quality requirements.

According to the present invention, a feed rotor having a plurality of vertical scraper fins extending radially from a hub portion is rotatably mounted on a feeder base, a rotary drive mechanism by a motor is connected to the feed rotor, and the feed rotor is removed. A surrounding outer ring is provided on the feeder base, an improvement material discharge port is formed inside the feeder base outer ring and at a position displaced from the feed rotor shaft, and a part of the upper surface of the improvement material discharge port and the feed rotor is covered from above. When a partition plate is provided on the outer ring, a soil improvement material is put on the feed rotor, and the feed rotor is driven to rotate, a certain amount of the improvement material per one rotation of the feed rotor is discharged through the improvement material discharge port. In the improvement material supply device of the soil improvement machine configured as described above, the radial scraper The supply amount adjusting member that partially shields the segment formed by detachable from the segment is formed, and the improvement material supply amount per one rotation of the feed rotor can be adjusted by attaching and detaching the supply amount adjusting member. Thus, the object of expanding the variable range of the improved material supply amount of the improved material supply apparatus was achieved.

  FIGS. 1 and 2 show an improvement material supply device for a soil improvement machine according to the present invention. The parts other than the rotating feed rotor 21 are the same as those of the conventional type, and the frame of the soil improvement machine as shown in FIG. A feeder base 1 having a circular planar shape is coupled to F by a bolt B, and a feeder motor 2 is attached to the center of the lower surface of the feeder base 1. The shaft 3 of the feeder motor 2 protrudes upward from the feeder base 1, and the feed rotor 21 attached to the shaft 3 rotates together with the shaft 3 of the feeder motor 2.

  The feed rotor 21 includes a plurality of (in this embodiment, ten) vertical scraper fins 23 extending radially from a central hub portion 22, and a vertical separator 24 connecting the respective radial intermediate portions of the adjacent scraper fins 23. It has.

  An outer ring 8 surrounding the feed rotor 21 is fixed to the feeder base 1, and there is a slight gap between the outer end of the scraper fin 23 of the feed rotor 21 and the inner periphery of the outer ring 8. A funnel-shaped improvement material tank 9 whose diameter increases upward is coupled to the upper edge of the outer ring 8, and a partition plate 10 that shields the upper surface of the feed rotor 21 by about half is provided on the outer ring 8. It has been.

  FIG. 1 shows the surface of the feeder base 1 with a part of the partition plate 10 cut out, and a square hole 11 is formed at a location covered by the partition plate 10 of the feeder base 1 and the lower surface of the feeder base 1 A chute 12 that matches with the square hole 11 is attached to the.

  When the improvement material is introduced into the improvement material tank 9, the improvement material falls to a portion of the feed rotor 21 that is not covered with the partition plate 10, and is caused by the hub portion 22 of the feed rotor 21 and the scraper fins 23 and the outer ring 8. The improvement material is filled into the formed space, and the improvement material falls through the chute 12 when the improvement material moves to the position of the square hole 11 of the feeder base 1 as the feed rotor 21 rotates.

  When the feed rotor 21 rotates, the improved material is worn by the partition plate 10 at the upper end position of the scraper fin 23 of the feed rotor 21, and an improved material having a thickness corresponding to the vertical distance between the feeder base 1 and the partition plate 10 is obtained. Fall from chute 12.

  In the state of FIGS. 1 and 2, the feed amount of the improvement material per rotation of the feed rotor 21 is defined by the ring-shaped space between the hub portion 22 of the feed rotor 21 and the outer ring 8 by 10 scraper fins 23. The volume of the improved material can be controlled by the rotation speed of the feed rotor 21 as in the conventional type. However, each segment is divided into two in the radial direction by the vertical separator 24. If the inner or outer portion of the vertical separator 24 is shielded, the supply amount of the improved material can be halved.

3 and 4 show a state in which the inner part of each segment is shielded from the vertical separator 24 by the supply amount adjusting plate 25, and the sector-shaped planar supply amount adjusting plate 25 corresponding to the inner part of the segment is respectively connected to the scraper. It is attached to the side surface of the fin 23 with a bolt B and a nut N. In this state, the improvement material placed on the supply amount adjustment plate 25 inside each segment does not fall, and only the improvement material in the outer portion from the vertical separator 24 of each segment falls from the chute 12, and the supply amount Compared with the case where the adjusting plate 25 is not attached, the supply amount of the improved material per rotation is almost halved.

  In the state where the supply amount adjusting plate 25 shown in FIG. 1 and FIG. 2 is not mounted, the feed amount of the improved material per rotation of the feed rotor 21 is not the conventional type, but the rotational speed control range of the feed rotor 21 is the same as the conventional type. If it is the same, the control range of the improvement material supply amount is the same, but as shown in FIGS. 3 and 4, half of each segment is shielded by the supply amount adjustment plate 25 and the improvement material supply per revolution is supplied. By halving the amount, the supply amount of the improved material at the minimum number of revolutions, that is, the minimum supply amount is almost half that of the conventional type, and the lower limit of the supply amount control range is lowered, so that a smaller amount can be supplied than the conventional type.

  In this embodiment, the segment of the feed rotor 21 is partially shielded by the supply amount adjusting plate 25. However, if it does not interfere with handling such as attachment / detachment, it is not a plate-shaped member but a fan-shaped block. It may be. Further, not the inner part from the vertical separator 24 of each segment but the outer part may be shielded. Further, the supply amount adjusting plate 25 and the fan-shaped block may not be attached to all the inner part or the outer part of the segment, for example, it may be attached every other part, and this may be dealt with at any time according to the required supply amount. . Also, the means for attaching the supply amount adjusting plate and the like are not limited to bolts and nuts, and any means such as pins and pin holes, hooks and catches, and ropes may be used. In addition, if a supply amount adjusting plate or a fan block having a compatible mounting and different shielding area is prepared, the supply amount can be adjusted more finely.

  The present invention is not limited to the above-described embodiment, and various modifications are possible within the technical scope of the present invention, and it is natural that the present invention extends to those modifications.

The one part notched top view of the improvement material supply apparatus which shows one Embodiment of this invention. FIG. 2 is a cross-sectional view taken along line AA in FIG. The partial notch top view of the improvement material supply apparatus which mounted | wore with the supply amount adjustment board. FIG. 4 is a cross-sectional view taken along line AA in FIG. The partial cutaway top view of the improvement material supply apparatus which shows a prior art example. FIG. 6 is a cross-sectional view taken along line AA in FIG.

Explanation of symbols

1 Feeder base
2 Feeder motor
3 axis
8 Outer ring
9 Improvement material tank
10 Partition plate
11 Square hole
12 Shoot
21 Feed rotor
22 Hub section
23 Scraper fin
24 Vertical separator
25 Supply adjustment plate
F frame
B bolt
N nut

Claims (4)

A feed rotor having a plurality of vertical scraper fins extending radially from the hub portion is rotatably mounted on a feeder base, and an outer ring surrounding the feed rotor is connected to a rotational drive mechanism by a motor connected to the feed rotor. A partition plate provided on the feeder base, formed with an improved material discharge port at a position displaced from the feed rotor shaft inside the outer ring of the feeder base, and covering the improved material discharge port and a part of the upper surface of the feed rotor from above is provided. Provided on the outer ring, when soil improvement material is put on the feed rotor and the feed rotor is driven to rotate, a certain amount of improvement material per one rotation of the feed rotor is discharged through the improvement material discharge port. In the improvement material supply device of the soil improvement machine,
A supply amount adjusting member that partially shields the segment formed by the radial scraper fins is formed to be detachable from the segment, and the supply amount adjusting member is attached / detached to supply an improved material per one rotation of the feed rotor. An improved material supply device for a soil improvement machine characterized in that the amount can be adjusted.   A vertical separator that connects each radial intermediate portion of the adjacent scraper fins is provided, and an inner part or an outer part of each segment separated by the vertical separator is shielded by the supply amount adjusting member. The improvement material supply apparatus of the soil improvement machine of 1 description.   2. The improvement material supply device for a soil improvement machine according to claim 1, wherein the supply amount adjusting member is a fan-shaped plate that shields a part of the segment. 2. The improvement material supply device for a soil improvement machine according to claim 1, wherein the supply amount adjusting member is a fan block that shields a part of the segment.

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