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Rotary drilling rig and construction method thereof

A technology of rotary drilling rig and construction method, applied in drilling equipment and methods, drilling tools, drilling equipment and other directions, can solve the problems of increasing the resistance of the casing and affecting the burying efficiency of the casing, and achieve the effect of high burying efficiency

Pending Publication Date: 2021-06-22
SUNWARD INTELLIGENT EQUIP CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the casing is lowered, the resistance on the casing increases, which affects the efficiency of casing embedding

Method used

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  • Rotary drilling rig and construction method thereof
  • Rotary drilling rig and construction method thereof
  • Rotary drilling rig and construction method thereof

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] The core of the present invention is to provide a rotary drilling rig, which can improve the casing embedding efficiency. Another core of the present invention is to provide a construction method of a rotary drilling rig using the above-mentioned rotary drilling rig, and the cascade embedding efficiency is high.

[0037] For a specific embodiment one of the rotary drilling rig provided by the present invention, please refer to Figure 1 to Figure 6 , i...

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Abstract

The invention discloses a rotary drilling rig and a construction method thereof. The rotary drilling rig comprises a chassis, a drilling mast, a vibration assembly and a pressurization system. The drilling mast is connected to the chassis, the vibration assembly comprises a vibration hammer and a tool connecting structure arranged on the vibration hammer, and the vibration hammer is slidably connected to the drilling mast in a lifting mode; and the pressurization system is connected between the drilling mast and the vibration hammer to drive the vibration hammer to lift. When a protective cylinder is buried, the tool connecting structure is adopted to connect the protective cylinder to be buried, the protective cylinder is pressed down by using the pressurization system, the vibration hammer is used for driving the protective cylinder to vibrate at high frequency, vertical vibration generated by the protective cylinder is transmitted to the protective cylinder, so that the soil structure around the protective cylinder is changed, the strength is reduced, the soil around the protective cylinder is liquefied, the friction resistance between the side surface of the protective cylinder and the soil body is reduced, the protective cylinder is sunk into the soil by matching the gravity of the protective cylinder, the gravity of the vibration hammer and the downward pressure of the drilling rig, the resistance in the burying process of the protective cylinder can be reduced, the functions of quickly vibrating into the protective cylinder and pulling out the protective cylinder are achieved, and the burying efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of drilling rigs, in particular to a rotary drilling rig and a construction method thereof. Background technique [0002] Rotary drilling rig is a pile foundation hole-forming construction equipment, which has the characteristics of fast hole-forming speed, good maneuverability, high construction efficiency and less pollution. During the construction of the rotary drilling rig, a casing needs to be buried at the hole to prevent the hole from collapsing and shrinking. [0003] Commonly used casing embedding methods include the spinning method, which usually uses a pipe rubbing machine, a full-rotation casing drilling rig, or uses a casing driver under the power head to drive the casing to rub in the forward and reverse directions, and uses the pressure system of the rotary excavation itself to apply pressure on the casing. Cut into the soil on the casing. When the casing is lowered, the resistance on the ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/02E21B7/04E21B11/02E21B15/00E21B15/04
CPCE21B7/02E21B7/04E21B11/02E21B15/003E21B15/04
Inventor 何清华熊明强屈乐宏
Owner SUNWARD INTELLIGENT EQUIP CO LTD
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