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AssigneeChengdu Xinhao Foundation Engineering Co., Ltd.
InventorsBiao ZHENG, Jie ZHENG, Changwei LI
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The disclosure belongs to the technical field of engineering construction, and particularly relates to a square pile construction method and equipment of a rotary drilling rig. The specific technical solution concerns a square pile construction method of a rotary drilling rig which includes: site leveling; surveying and setting out; creating concrete retaining wall of wellhead; putting the drilling rig in place; adjusting the verticality of the drilling rig; lead hole drilling; reamed hole drilling; square hole drilling; hole cleaning with round drill bit; and hole cleaning with square drill bit. The square pile construction method and rotary drilling rig can use equipment for square pile construction in the whole process, effectively reduce the underground operation of laborers, and avoid the project safety production risk from the source. The disclosure also provides three kinds of square pile drill bits and a square pile hole cleaning drill bit in cooperation with the square pile construction method, which further realizes the mechanization of the whole process of square pile construction.
A square pile drill bit, comprising a box body, transmission shafts, first and second sprockets, and first chains, the box body including a power driving device, a power transmission mechanism and an actuator, the power driving device being connected with the power transmission mechanism, the power transmission mechanism being connected with the actuator, the box body having a lower part with left and right sides, the actuator comprising first actuating components and second actuating components, the first actuating components being at the left and right sides of the lower part of the box body, each of the first actuating components being in transmission connection with a corresponding one of the transmission shafts through a corresponding one of the first sprockets, a corresponding one of the second sprockets and a corresponding one of the first chains, and the second actuating components being at ends of the transmission shafts away from the box body.
A square pile drill bit, comprising a power head component, a power transmission component and actuating components, the actuating components comprising transmission shafts, shaft sleeves and cutting actuating elements.
A square pile drill bit, comprising a box body having edges therein, grinding shaft sleeves and grinding heads, the grinding shaft sleeves being longitudinally and evenly arranged on the edges and having lower ends penetrating a lower sidewall of the box body and extending to a lower end of the box body.
Dependencies are inferred from the claim text.