Plateau mountain foundation pit excavation construction device

Abstract

A plateau mountain foundation pit excavation construction device comprises a braced frame. The braced frame is provided with a walking supporting mechanism and a supporting frame. The supporting frame is perpendicularly provided with a sliding way rack. A lifting support is arranged at the upper end of the sliding way rack. A sliding way is perpendicularly arranged in the sliding way rack. The sliding way rack is provided with a double-stepping transmission mechanism. A rotary driving device connected with the double-stepping transmission mechanism is arranged in the sliding way in a sliding mode. The power output end of the rotary driving device is connected with a drilling device. An excavation mechanism and a soil lifting mechanism are arranged at the lower end of the driving device. According to the plateau mountain foundation pit excavation construction device, design is reasonable, the automation degree is high, manual labor intensity is fully relieved, the safety degree and the reliability degree are high, and work efficiency of excavation of pile holes is improved; according to a line project pile hole foundation excavation mode, the research on foundation fit excavation mechanical operation machines and tools for a plateau mountain transmission line special foundation is conducted, the device is made to meet the technical requirements of a line construction excavation pile foundation, and the construction mechanization degree and construction efficiency of an alternating current transmission line project are improved.

Description

technical field [0001] The invention belongs to the technical field of electric power industry construction, and in particular relates to excavation construction equipment for foundation pits in plateau and mountainous areas. Background technique [0002] Excavated pile foundation is a foundation type commonly used in transmission line engineering. Compared with the large excavation foundation form, it has significant advantages in environmental protection, concrete maintenance, reduction of backfill operations, and full use of undisturbed soil properties. In recent years, it has been used in power transmission It is more and more widely used in line engineering. [0003] The traditional method of manually excavating foundation pits is a type of pile that uses manual excavation of pile holes, places steel cages in the holes, and pours concrete. Its advantages are: [0004] (1) The manual excavation pile construction equipment is simple, the construction operation is conveni...

AI Technical Summary

Problems solved by technology

[0011] (1) Poor underground operating conditions, harsh environment, and high labor intensity;

[0012] (2) The safety is poor, and personnel work up and down in the hole, which is prone to casualties;

[0013] (3) The construction speed of single pile is relatively slow;

[0014] (4), the amount of concrete pouring is large

[0015] Of course, manual excavation piles are only limited to the soil formations in the plains. For the Sichuan-Tibet Interconnection Project with high altitude, harsh climate and terrain, and short construction time, conventional excavation equipment and construction methods cannot meet the construction needs.

[0016] The Sichuan-Tibet interconnection project starts from the Sichuan 500kV rural-urban substation, passes through the 500kV Batang substation, the Tibet 500kV Qamdo substation, and ends at the 220kV Bangda substation and Yulong substation. A new 500kV line is 1,036 kilometers long. The newly built 220 kV line is 505 km long and the 110 kV double-circuit line on the same tower is 2 × 9 km long. Most of the areas along the project line are in low pressure, anoxic, severe cold, strong wind, strong radiation and other areas, and the natural environment and climate conditions are extremely It is harsh and human construction is limited; at the same time, the project is located in the "Three Rivers" fault zone with the most complex geological structure and the widest distribution of geological disasters in the world. Functional role is difficult to play, construction is extremely difficult

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