Motor-drive equal-thickness cement-soil mixed underground diaphragm wall construction device and method

Abstract

The invention relates to a multi-spindle drilling machine, a construction device and a construction method for constructing a cement-soil mixed equal-thickness underground diaphragm wall. The construction device is characterized in that a motor is arranged on a rack, one end of the output shaft of the motor is connected with a gear shaft through a speed reducer, the gear shaft is engaged with a gear set, the bottom gear of the gear set is connected with a driving sprocket through a rotating shaft, a cutting chain and a tool bit are arranged on the driving sprocket, a clutch is arranged on one gear of the gear set, a clutch oil cylinder is arranged on one side of the clutch, and the clutch oil cylinder is connected with a controllable hydraulic system through a rotary joint. By using motor drive instead of hydraulic drive, the cost is greatly reduced, the weight of a machine body is increased and the equal-thickness cement-soil mixed underground diaphragm wall construction device with a more stable gravity center and stronger power is obtained and can cope with various complex terrains and soil layers; and since the gear set at each stage is provided with a disc clutch, the problem of overload during rotation of the motor is solved and the overload protection effect is achieved.

Description

[technical field] [0001] The invention relates to foundation works applicable to buildings, excavation of underground roads and public ditches, shield shafts, foundation retaining walls, water-stop walls, foundation reinforcement of harbor embankments, etc. The invention relates to a multi-axis drilling rig for an underground diaphragm wall and a construction device thereof, in particular to a construction device and method for an underground diaphragm wall which is driven by a motor to stir cement and soil of equal thickness. [Background technique] [0002] At present, one of the well-known technologies is a technology of using a multi-axis drilling rig to build a column-type underground diaphragm wall: it is a special multi-axis drilling rig that drives a group of drill pipes to drill into the formation in sections to a certain depth After lifting back to the ground, during the drilling or lifting process of a group of drill pipes, cement slurry can be injected into the so...

AI Technical Summary

Problems solved by technology

[0003] The main disadvantages of the technology of using the above-mentioned multi-axis drilling rig to build column-type underground diaphragm walls are: the resulting walls are of non-uniform thickness, in the shape of gourd strings, with different thicknesses and uneven strength; especially used as anti-seepage walls Water leakage is prone to occur at the sharp corners of the wall; and the arrangement and quantity of inserted steel are also restricted.

[0005] 1. The manufacturing precision of hydraulic components is high. Due to the high technical requirements of the components and the difficulty of assembly, the use and maintenance are relatively strict, resulting in high cost;

[0006] 2. The oil is easy to be polluted. After the oil is polluted, it will affect the reliability of the system;

[0007] 3. Faults are not easy to check and eliminate

[0008] If the hydraulic drive is directly replaced with a motor drive, although the problem of high manufacturing cost can be overcome, there are safety hazards such as easy overload and burning of the motor.

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