Drilling machine for continuous secant pile retaining wall of foundation pit

A drilling machine and occlusal pile technology, which is applied to drilling tools, drill pipes, drill pipes, etc., can solve the problems of the inability of the drill pipe to be drilled and the poor adaptability to different soil environments, so as to increase the damage width, improve the the effect of destruction

Pending Publication Date: 2018-11-27
江西基业良工桩机制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that in the prior art, the drilling rig with the cutting and eliminating device used to make the thickness of the continuous occlusal pile hole uniform, is easily blocked by the hard object located at the protrusion of the inner wall of the pile hole during the construction process. As a result, the drill pipe cannot be drilled, and this type of drilling rig in the prior art has poor adaptability to different soil environments; thus a method for uniformizing the thickness of continuous occlusal pile holes is proposed, and has a relatively low adaptability to different soil environments. Strong drilling machine for retaining wall of continuous occlusal piles in foundation pit

Method used

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  • Drilling machine for continuous secant pile retaining wall of foundation pit
  • Drilling machine for continuous secant pile retaining wall of foundation pit
  • Drilling machine for continuous secant pile retaining wall of foundation pit

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Effect test

Embodiment 1

[0032] Such as figure 2 As shown, the drilling machine for the continuous occlusal pile retaining wall of the foundation pit in this embodiment includes: a power unit 1 and a drill rod mechanism 8 connected to the power device, wherein the drill rod mechanism 8 is used for one form a plurality of interconnected continuous pile holes, wherein the drill rod mechanism includes a plurality of drill rods, in this embodiment, the drill rods are specifically the first drill rod 12, the second drill rod 13 and the third drill rod The drill rod 14, and the drill bit 8' located at the lower part of the drill rod; two adjacent drill bits 8' are arranged in a staggered direction in the horizontal direction and vertical direction, and the projection in the vertical direction has overlapping parts; the first A drill rod and a third drill rod at least include two coaxially arranged first straight rod sections 31 and second straight rod sections 32, and a curved section in the middle of the ...

Embodiment 2

[0041] Such as Figure 8 As shown, the difference between the drilling machine for the continuous occlusal pile retaining wall of the foundation pit of this embodiment and the above-mentioned embodiment is that: the two drill rods that are synchronous and rotate in the same direction are provided with at least two curved section, and the first device is installed on the corresponding curved sections of the two drill rods. Such as Figure 9 As shown, the curved segments may not bend in the same direction. The above design can realize that the first device is provided at more than two positions of the drill pipe above and below, which increases the one-time damage width to the protrusion of the soil body, thereby realizing the fast drilling of the drill pipe. It can better destroy the protrusion of the soil.

Embodiment 3

[0043] Such as Figure 10 As shown, the difference between the drilling machine for the continuous occlusal pile retaining wall of the foundation pit of this embodiment and the above-mentioned embodiment 1 is that: the two drill pipes that rotate synchronously and in the same direction are provided with a curved section , and the first device is installed on the corresponding curved sections of the two drill rods. In addition, the curved section has two curved portions with an inclination angle of 45 degrees and opposite inclination directions. Such as Figure 11 As shown, the drill rod of the drilling machine used for the continuous occlusal pile retaining wall of the foundation pit can have two above-mentioned curved sections of the present embodiment, such as Figure 12 As shown, the drill rod of the drilling machine used for the continuous interlocking pile retaining wall of the foundation pit can have two above-mentioned curved sections bent in different directions.

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Abstract

The invention provides a drilling machine for a continuous secant pile retaining wall of a foundation pit. The drilling machine comprises a power device and a drill pipe mechanism connected to the power device, wherein the drill pipe mechanism is used for forming a plurality of continuous pile holes communicated with each other in one time. The drill pipe mechanism includes a plurality of drill pipes and drills located on the lower portions of the drill pipes. Two adjacent drills are staggered in the horizontal direction and the longitudinal direction, and projections in the vertical directionhave a coinciding portion; and each drill pipe at least includes two coaxially-arranged straight rod sections and at least one bent section located between the two straight rod sections. The drillingmachine also includes a first device mounted at the position of the bent section. The first device is suitable for being driven by the bent section to perform circumferential motion when the drill pipe rotates, so that soil body portions on the inner wall of the continuous pile holes, which protrude towards the inner sides of the holes, are damaged in a manner of contact through the circumferential motion.

Description

technical field [0001] The invention discloses a drilling machine, in particular to a drilling machine used for retaining walls of foundation pits with continuous occlusal piles. Background technique [0002] The retaining wall is used as a soil retaining and / or water-stop structure for the foundation pit, usually formed by the engagement of several piles; for this type of retaining wall, the weakest position of the retaining soil is the position of the engagement of the piles ; In order to obtain a wall with uniform stress strength, Chinese patent document CN100485156C discloses a multi-axis drilling rig, which mainly includes: a support machine, a drilling rig power head and a drilling tool; the support machine is mainly composed of a base that can walk on the ground , consisting of a column on the base, a hoist unit, an operating room and a traction wire rope; the power head of the drilling rig is mainly composed of a movable frame, which is set on the frame and includes ...

Claims

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Application Information

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IPC IPC(8): E21B4/16E21B17/00E21B12/00E02D29/02E02D17/02
CPCE21B4/16E21B12/00E21B17/00E02D17/02E02D29/02
Inventor 梁毅江守慈刘献刚
Owner 江西基业良工桩机制造有限公司
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