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
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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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