Pile pulling device and pile pulling construction method thereof

Abstract

The invention discloses a pile pulling device and a pile pulling construction method thereof. The pile pulling device includes a full casing connected to a power head of a combined power hole formingpile machine, and a casing type pile puller is fixed to the bottom end of the full casing. The casing type pile puller is provided with a plurality of sets of convex claws which are driven by oil cylinders and can protrude to the centers of pipes to form axial upward supporting of the bottom ends of a waste pile or cutting off the waste pile. A plurality of alloy teeth are arranged on the inner surfaces of the convex claws. The oil cylinders are connected with an oil pump and an oil tank arranged on the combined power hole forming pile machine through solenoid valves and oil pipes, a pluralityof high-pressure water nozzles are arranged at the bottom end of the casing type pile puller, and the high-pressure water nozzles are connected with water pumps arranged on the combined power hole forming pile machine and connected with a water source through the solenoid valves and high pressure water pipes. The oil cylinders are further provided with distance sensors which detect downward extending length of a piston rod, and the distance sensors are electrically connected with a controller. A raised column is accurate and reliable on the pocket bottom of the waste pile, and the construction noise is low. The waste pile is pulled out in an one-time rotation mode or pulled out after cutting, the time and labor are saved, the construction cycle is short, and the construction efficiency ishigh.

Description

technical field [0001] The invention relates to the technical field of waste pile cleaning, in particular to a pile pulling device and a pile pulling construction method thereof. Background technique [0002] With the general promotion of urban expansion and renovation projects and the rise of urban rail transit construction, the cleaning of waste piles left after buildings were demolished in the 1980s and 1990s has become a technology that new high-rise buildings and urban rail transit must face. question. Generally, there are two situations: one is that the waste pile does not exceed 30 meters, and it can be pulled out at one time. The other is that although the waste pile is as long as 60 meters, it can meet the needs of rail transit construction, as long as the part above 30 meters is pulled out. At present, the commonly used method is to use destructive means such as hammering, rotary digging or twisting off the old pile foundation, and then clean up the remaining hol...

AI Technical Summary

Problems solved by technology

At present, the commonly used method is to use destructive means such as hammering, rotary digging or twisting off the old pile foundation, and then clean up the remaining holes after destroying the waste pile body, which is time-consuming, laborious, long construction period, low construction efficiency, and large construction noise; or use The full casing adopts a clamp with spring control and other structures, which is clamped on the outer diameter of the waste pile after being penetrated to a certain depth, and then pulled upwards. However, it is difficult to control the clamping degree in actual operation, or the waste pile cannot be clamped to achieve the desired

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