Screw-thread fit type multi-power guiding composite drilling tool, preparation method and type pile
A power drilling tool and multi-power technology, applied in drilling equipment and methods, drilling equipment, percussion drilling, etc., to achieve the effects of shortening the construction period, facilitating promotion and application, and realizing work efficiency
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Embodiment 1
[0066] This embodiment provides a screw-fitted multi-power guiding composite drilling tool, which includes: a guiding and linked drilling tool, a middle power drilling tool and an upper power drilling tool coaxially nested in sequence;
[0067] The middle power drilling tool and the upper power drilling tool are respectively equipped with a power mechanism, and the power mechanism can independently drive its corresponding drilling tool to rotate;
[0068] An external thread structure 121 is provided on the outer side of the core pipe of the upper power drilling tool, and the external thread structure 121 is used to act as a helical blade of the upper power drilling tool;
[0069]The medium power drilling tool is composed of a drilling tool body with a composite function of expelling soil. The medium power drilling tool is provided with an internal thread structure 221 inside the core tube of the drilling tool body. The internal thread structure 221 is connected to the The abov...
Embodiment 2
[0112] combine Figure 11 to Figure 19 and Figures 20 to 30 As shown, the second embodiment also provides two preparation methods for preparing the type pile 4 based on the threaded multi-dynamic composite drilling tool for different site conditions, which include: according to the requirements of the stratum for the construction method, the above The power drilling tool 1, the medium power drilling tool 2 and the guiding linkage drilling tool 3 are respectively drilled to their respective design depths, so that multiple rounded stepped holes can be formed; during the drilling process of each drilling tool, the middle sleeve drill Tool 22 can be used for up and down reciprocating / single rotary extrusion in the soil extrusion area of the pile hole, and eliminates the soil on the rotary row of the central drilling tool 12 for multiple / single extrusion, extrusion and expansion until the entire pile hole wall is compacted up and down reach a relative balance. Start the concre...
Embodiment 3
[0143] combine Figure 31 to Figure 32 As shown, this embodiment also provides a type pile 4 prepared according to the threaded multi-power guiding composite drilling tool, which includes: a main pile body 41; the main pile body 41 is provided with at least two inverted Circular stepped body 42; the included angle range between the extension line of the generatrix at the variable diameter of the rounded stepped body 42 and the central axis of the main pile body 41 is: 5°-90°. For example: the reduced diameter of the rounded stepped body 42 is located at the shallow part of the pile body, and the included angle between the extension line of the generatrix at the reduced diameter of the rounded stepped body 42 and the central axis of the main pile body 41 is The range value should be 30°~45°. Another example: the diameter reduction of the rounded stepped body 42 is located in the deep part of the pile body, and the included angle between the extension line of the generatrix at ...
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Abstract
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