Double-trapezoidal earthwork excavation device and method

Abstract

The invention provides a double-trapezoidal earthwork excavation device and method. A rotary cutting mechanism and a slope cutting mechanism are arranged above the front end of an open groove of a soil collecting hopper; a slope cutting knife is located behind a rotary knife; a soil inlet of a soil discharging mechanism extends into the soil collecting hopper; and a soil discharging pipe extends out of the soil collecting hopper. A cross universal coupling of the rotary cutting mechanism transmits torque to drive the rotary knife to obliquely and linearly cut slope earthwork, a cutting motor of the slope cutting mechanism drives a slope cutting knife to obliquely and linearly cut the slope earthwork, the soil collecting hopper collects cut soil, and the soil is discharged out of a groove through the soil discharging mechanism. According to the double-trapezoidal earthwork excavation device and method, the problems that earthwork is prone to collapsing into a foundation trench when an original hydropower station pressure pipeline foundation trench slope is excavated, an excavator needs to be adopted again for soil discharging operation, the operation period is long, and efficiency is low are solved; and the double-trapezoidal earthwork excavation device and method have the characteristics that the structure is simple, the excavated trench slope earthwork is not prone to collapsing, soil discharging is conducted while operation is conducted, slope excavation precision is high, operation time is short, the efficiency is high, and the operation is simple and convenient.

Description

technical field [0001] The invention belongs to the technical field of foundation treatment, and relates to a double trapezoidal earthwork digging device and method. Background technique [0002] During the construction of hydropower stations, various foundation excavations are involved, including the excavation of foundation trenches with a double trapezoidal structure. The double trapezoidal structure includes the first layer of trapezoidal trenches and the second layer of trapezoidal trenches. The width of the notch is greater than the width of the bottom of the groove, and the width of the first layer is greater than that of the second layer. Excavation equipment is used for construction work. The problem encountered in the current excavation process is that during the excavation process of the trench side slope, the side slope The excavation accuracy is low, and the slope earthwork is easy to collapse into the trench. After excavation, it is necessary to carry out anoth...

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Problems solved by technology

[0002] During the construction of hydropower stations, various foundation excavations are involved, including the excavation of foundation trenches with a double trapezoidal structure. The double trapezoidal structure includes the first layer of trapezoidal trenches and the second layer of trapezoidal trenches. The width of the notch is greater than the width of the bottom of the groove, and the width of the first layer is greater than that of the second layer. Excavation equipment is used for construction work. The problem encountered in the current excavation process is that during the excavation process of the trench side slope, the side slope The excavation accuracy is low, and the slope earthwork is easy to collapse into the trench. After excavation, it is necessary to carry out another soil dumping operation. The operation period is long and the efficiency is low.

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