pipe jacking machine

Abstract

The invention discloses an excavating pipe jacking machine which comprises an excavating arm assembly and a collapse-preventive barrel assembly. The excavating arm assembly is arranged in the collapse-preventive barrel assembly and comprises an excavating arm, a rotating unit and a swing unit, the rotating unit is used for driving the excavating arm to freely rotate, the swing unit is used for driving the excavating arm to swing up and down and leftwards and rightwards, the collapse-preventive barrel assembly comprises a front barrel and a rear barrel, the front barrel can frontwards extend along the rear barrel to prevent soil layer collapse, and a rectification oil cylinder is used for driving the front barrel for rectification to enable excavating to be performed linearly. The excavating pipe jacking machine realizes free rotation and up-down leftward-rightward free swing of the excavating arm, an excavating bucket on the excavating arm can be moved to any point at the edge of a shell of the pipe jacking machine, and dead-angle-free excavating is realized during working. The rectification oil cylinder is utilized to drive the front barrel to extend forwards along the rear barrel, so that the collapse problem of a soft and loose position of a soil layer is solved through excavating.

Description

technical field [0001] The invention relates to the field of excavating machinery, in particular to an excavating pipe jacking machine. Background technique [0002] Pipe jacking construction is a non-excavation construction method, and it is a pipeline burying construction technology that does not excavate or excavates less. Pipe jacking construction is to use the jacking force generated by the jacking equipment in the working pit to overcome the friction between the pipeline and the surrounding soil, push the pipeline into the soil according to the designed slope, and transport the earth away. After one section of pipe has been jacked into the soil layer, the second section of pipe will continue to be jacked. Its principle is to push the tool pipe or pipe jacking machine from the working pit through the soil layer to the receiving pit by means of the thrust of the main jacking cylinder, the pipe room, and the relay room. The pipeline is buried between the two pits immedi...

AI Technical Summary

Problems solved by technology

The existing excavating arm assembly can only excavate in a single direction, and the bucket can only excavate repeatedly in one direction, and other directions, such as materials located on the side of the bucket, cannot be excavated.

[0004] In addition, when the existing pipe jacking machines are excavating places with soft soil layers, landslides often occur above, and the excavation work has to be stopped, seriously affecting production efficiency, and even directly threatening the safety of personnel and equipment. Safety, therefore, there is an increasing demand for an anti-collapse device set at the front end of the pipe jacking machine in the market

Images