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Bottom enlarging basket bucket

A technology with enlarged diameter and wings, which is applied to drilling equipment, sheet pile walls, earthwork drilling and mining, etc., and can solve problems such as many hard strata and difficult cutting of bottom expansion buckets

Inactive Publication Date: 2008-01-09
SYST MEASURING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, because the stratum forming the bottom expansion is mostly the support layer of piles, there are many hard grounds, and it is sometimes difficult to cut with a traditional bottom expansion bucket.

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment 1

[0090] Hereinafter, Example 1 of the above-mentioned embodiment will be described. In addition, the description of the same or equivalent parts as those described in the above-mentioned embodiment will be described using the same reference numerals.

[0091] FIG. 8 is a diagram showing a state where the opening adjustment plate 7 is provided on the upper surface of the guide cylinder 15 to adjust the descending amount of the transmission shaft portion 14 .

[0092] That is to say, in the above-mentioned embodiment, the reinforcing sleeve 142a of the connecting rod 142 is brought into contact with the lower end of the slide groove 152 to expand the expansion wings 12, 12 to the maximum extent. It is not necessary to expand the expanded bottom 60b to the maximum expanded bottom 120.

[0093] Therefore, on the upper surface of the guide cylinder 15, a plate-shaped opening adjustment plate 7 having a through hole larger in diameter than the transmission shaft portion 14 can be ad...

Embodiment 2

[0101] Hereinafter, Example 2 of the above-mentioned embodiment will be described. In addition, the description of the same or equivalent parts as those described in the above-mentioned embodiment will be described using the same reference numerals.

[0102] As shown in FIG. 9, in the second embodiment, the case of using a guide cylinder 15A having a sliding groove 152A obliquely provided on the peripheral surface will be described.

[0103] The guide cylinder 15A is at least a cylindrical tube with an open top, and is fixed to the inner surface of the main body 11A via connecting plates 151A and 151B fixed to the upper and lower parts of the outer peripheral surface.

[0104] And, as shown in FIG. 9( a ) and ( b ), a sliding groove 152A inclined in a direction intersecting the axial direction is formed on the peripheral surface of the guide cylinder 15A. Wherein, Fig. 9(a) is a C-C sectional view of Fig. 9(b), and Fig. 9(b) is a side view viewed from the B-B direction of Fig...

Embodiment 3

[0111] Hereinafter, Example 3 of the above-mentioned embodiment will be described. In addition, the description of the same or equivalent parts as those described in the above-mentioned embodiment will be described using the same reference numerals.

[0112] In this third embodiment, a case where the expanded bottom portion 60b is formed in the excavated hole 60 in which the shaft portion 60a is excavated with a diameter larger than that of the main body portion 11 will be described.

[0113] In this way, when the bottom expanding bucket 1 is inserted into the excavation hole 60 having a larger diameter than the main body portion 11, since there is a gap between the main body portion 11 and the wall surface of the excavation hole 60, as shown in FIG. and the lower part are equipped with stabilizer 4 and lower stabilizer part 133 respectively, so that the center position of the main body 11 does not deviate when expanding the bottom.

[0114] That is, the 1 / 4 arc-shaped slidin...

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Abstract

The present invention provides an expanding bottom excavator bucket which can form peg easily even though in hard stratum. The expanding bottom excavator bucket (1) is used to form a expanding bottom part (60b) which diameter is larger than the axis part (60a) in the bottom of the peg. The bucket comprises a cylindrical main body part (11) and an amplifying range wing part (12) to enlarge the diameter of the main body part (11), moreover, setting multiple rotary cutting devices (121) on the side end part of the amplifying range wing part (12) in the extending direction of the side end part.

Description

technical field [0001] The present invention relates to a bottom expansion bucket for forming a bottom expansion wider than a shaft portion at a portion constituting a bottom of a pile. Background technique [0002] Up to now, the expanded bottom pile as the poured concrete pile with expanded bottom enlarged than the shaft portion at the part constituting the bottom of the pile is known (refer to Japanese Patent Laid-Open No. 2001-164867 and Japanese Patent Laid-Open Showa 59- Bulletin No. 489). [0003] The riser wall is installed on the ground, and the part constituting the shaft part is formed by excavating with an excavator on the inside of the wall, and the diameter of the cutting shaft part is gradually enlarged to form a part constituting the expanded bottom with a bottom-expanding bucket below it. Bottom pile. [0004] The flared bottom portion is configured to have a frustum-shaped flared portion whose diameter gradually expands downward, and a cylindrical vertica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/32E02D5/16
Inventor 久保丰
Owner SYST MEASURING
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