Safety protection device for deep foundation pit excavation of building

Abstract

The invention discloses a safety protection device for deep foundation pit excavation of a building. The safety protection device comprises a first lever, a second lever, a third lever and a fourth lever. The first lever comprises a first base, and a first sliding rail is connected to the top of the first base. A first top plate is disposed at the top of a first support column, and a second sliding block is disposed at the bottom of a second sliding rail. A first motor and a first T-shaped platform are fixed to the bottom of the second sliding block, and a first motor output shaft is fixed tothe bottom of the first motor. The first motor output shaft is connected with a first baffle in a threaded mode. According to the safety protection device for the deep foundation pit excavation of thebuilding, four baffles are controlled by motors, and the baffles are closely attached to the inner wall of a foundation pit to support the inner wall of the foundation pit, so that the occurrence oflandslide is effectively prevented; and the first lever, the second lever, the third lever and the fourth lever are vertically distributed, and the inner walls of four directions of the foundation pitare all supported by the baffles, so that the danger of collapsing in one direction of the foundation pit is effectively prevented.

Description

technical field [0001] The invention relates to the field of building safety protection devices, in particular to a safety protection device for excavating deep foundation pits of buildings. Background technique [0002] The general definition of deep foundation pit is: the bottom area is within 27 square meters (not 20), and the long side of the bottom is less than three times the short side, and the excavation depth exceeds 5 meters (including 5 meters) or the basement has more than three floors (including three floors). , or projects whose depth does not exceed 5 meters, but the geological conditions, surrounding environment and underground pipelines are particularly complex. (Conversely, it is a shallow foundation pit). Deep foundation pit engineering refers to: (1) earthwork excavation, support, and dewatering engineering of foundation pits (troughs) whose excavation depth exceeds 5m (including 5m). (2) Although the excavation depth does not exceed 5m, but the geologi...

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Problems solved by technology

(2) Although the excavation depth does not exceed 5m, but the geological conditions, surrounding environment and underground pipelines are complicated, or the earthwork excavation, support and dewatering works of foundation pits (troughs) that affect the safety of adjacent buildings (structures)

[0003] The existing deep foundation pit excavation equipment does not have good safety protection devices to protect the workers who dig deep foundation pits, which may cause construction workers to face serious dangers of landslides, seriously affecting the construction progress and worker safety; The existing deep foundation pit excavation equipment does not have a good safety protection device to protect the environment around the deep foundation pit, resulting in the danger of the surrounding ground buildings collapsing; the existing deep foundation pit excavation equipment does not have an alarm It is suggested that when there is a danger, the underground workers in the pit cannot perceive the danger. The existing deep foundation pit excavation equipment does not have lighting work lights. When the construction personnel are working at night, they cannot provide lighting convenience, which affects the progress of the construction and the workers. Work safety; Existing deep foundation pit excavation equipment is huge, which is not conducive to the deployment of equipment at any time

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