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Machine drilling end reaming drill bit special for filling pile, and construction method thereof

A cast-in-place pile and tip technology, which is applied to drill bits, sheet pile walls, drilling equipment, etc., can solve problems such as large gaps, uncertain sizes, and inability to adapt to the adjustment of reaming diameters, so as to reduce the possibility of damage and reduce The effect of cost consumption

Active Publication Date: 2018-11-30
四川锦城智信建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the special drill bit is reaming, the force exerted by the bottom wall of the hole on the drill bit is uncontrollable, that is, the angle between the bar tool holders is uncertain, so that the hole diameter after reaming is quite different from the expected one. At the same time, the diameter of the hole reamed by the special drill bit is single, which cannot adapt to the adjustment of the reaming diameter in different environments

Method used

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  • Machine drilling end reaming drill bit special for filling pile, and construction method thereof
  • Machine drilling end reaming drill bit special for filling pile, and construction method thereof
  • Machine drilling end reaming drill bit special for filling pile, and construction method thereof

Examples

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Effect test

Embodiment 1

[0041] like figure 1 , 2 As shown, a special special drill bit for cast-in-situ pile reaming with machine drill ends, including a reducing joint 1 connected with a drill rod and a plurality of tool holders 2, and the number of tool holders 2 is set to four in this embodiment. The side wall of the variable diameter joint 1 away from the drill pipe is provided with an inner sleeve rod 11 and an outer sleeve rod 12, the outer sleeve rod 12 is sleeved outside the inner sleeve pipe, and a guide rod 3 is movable between the inner sleeve rod 11 and the outer sleeve rod 12 to guide A spring is connected to one end of the rod 3 between the inner sleeve rod 11 and the outer sleeve rod 12 , and the other end of the spring is connected to the reducing joint 1 .

[0042] like figure 1 , 2 As shown, one end of the tool holder 2 is hinged with the side wall of the inner sleeve rod 11 provided with the reducing joint 1, and the other end is hinged with the guide rod 3 and the hinge point i...

Embodiment 2

[0050] A construction method of a cast-in-place pile with a machine-drilled end reaming is carried out according to the following steps:

[0051] a) The operator uses a bulldozer to initially level the site, and then the operator positions the cast-in-place piles according to the construction drawings. After the positioning is completed, use the pile position counter to determine the position of the casing.

[0052] b) Put the side wall of the casing against the side wall of the pile position counterpointer. At this time, the point to be punched is at the center of the casing, and pressure is applied on the side wall of the casing away from the ground to make one end of the casing 50cm into the ground, the casing should be set vertically at this time, and the deviation should be corrected in time when the position of the casing is deviated; Drill holes at the predetermined points and construct to the predetermined reaming depth.

[0053] c) Manually excavate the mud pool near...

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Abstract

The invention relates to a machine drilling end reaming drill bit special for a filling pile, and a construction method thereof, and belongs to the technical field of filling piles. The machine drilling end reaming drill bit comprises a reducer union connected with a drill rod, and a plurality of cutter frames. The cutter frames comprise two strip-shaped cutter frames which are mutually hinged. The machine drilling end reaming drill bit further comprises an adjusting piece. The adjusting piece comprises an adjusting rod and a sliding rod. One end of the adjusting rod is connected with the strip-shaped cutter frames, and connecting points are located on the strip-shaped cutter frames hinged to the reducer union. The sliding rod is sleeved with the adjusting rod. Outer sleeving rods are provided with a plurality of adjusting holes in the axial direction of the outer sleeving rods. The sliding rod is provided with a limiting hole. Fixing pieces used for limiting the total length of the adjusting piece are arranged at the adjusting holes and the limiting hole in a penetrating mode. When the drilling diameter of the special drill bit is changed, an operator fixes the fixing pieces to the different adjusting holes, and thus the diameter of a reamed hole can be changed by changing the total length of the adjusting piece.

Description

technical field [0001] The invention relates to the technical field of cast-in-situ piles, in particular to a drill bit special for cast-in-situ piles for reaming the end of a machine drill and a construction method thereof. Background technique [0002] In the geological situation where non-bedrock is the bearing layer, in order to ensure that the bearing capacity of the foundation is not exceeded for high-rise and super-high-rise construction projects with extremely large upper loads, the pile diameter and length of the pile body are generally increased to increase the bearing capacity of the single pile. However, increasing the diameter of the pile will lead to a substantial increase in the amount of concrete. At the same time, when the ratio of the length to the diameter of the pile is too large, the bearing capacity and shear capacity of the pile will be significantly reduced. [0003] Notification number is that the Chinese patent of CN101130975A discloses a kind of ma...

Claims

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Application Information

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IPC IPC(8): E21B10/32E21B10/60E02D5/34
CPCE02D5/34E21B10/32E21B10/602
Inventor 张恒
Owner 四川锦城智信建设工程有限公司
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