Synchronous towing, pushing and tunneling device of underground box culvert or pipeline construction

Abstract

The invention provides a synchronous towing, pushing and tunneling device of underground box culvert or pipeline construction, relating the technical field of building construction machinery. The invention solves the technical problems of increasing suitability for a construction field, tunneling length and construction work efficiency. The synchronous towing, pushing and tunneling device comprises a push jack set, a tunneling machine head, a pull jack set and a plurality of cables, wherein the push jack set is arranged in a starting well, a cable reactive wall is arranged in a receiving well, the pull jack set is arranged on the cable reactive wall, at least four horizontal directional holes are drilled between the starting well and the receiving well along a designed axis direction, the cables are respectively laid into the horizontal directional holes, one end of each cable is connected and fixedly locked with the pull jack set in the receiving well, the other end of each cable is fixedly connected with the head of the tunneling machine head, and a cable self-locking mechanism which is used for stopping the cables is arranged on the pull jack set. The synchronous towing, pushing and tunneling device of underground box culvert or pipeline construction is suitable for various sizes of reinforced concrete or steel structure culverts or pipelines with rectangular and circular sections.

Description

technical field [0001] The invention relates to the technology of building construction machinery, in particular to the technology of a synchronous traction and jacking driving device for underground box culvert or pipeline construction. Background technique [0002] As a trenchless technology, the pipe jacking method has the advantage of little disturbance to the ground, so it is widely used in the current underground pipeline construction. Existing pipe jacking construction devices are all composed of jacking jacks and tunneling heads. This construction device has the following defects: 1) Since the driving power of the machine head and pipe joints is completely provided by the jacking jacks in the starting shaft, its construction The excavation length is short, and in order to provide sufficient horizontal backing force and overcome the jacking resistance, the thickness of the structural wall of the departure shaft and the thickness of the back reinforcement of the depart...

AI Technical Summary

Problems solved by technology

Existing pipe jacking construction devices are all composed of jacking jacks and tunneling heads. This construction device has the following defects: 1) Since the driving power of the machine head and pipe joints is completely provided by the jacking jacks in the starting shaft, its construction The excavation length is short, and in order to provide sufficient horizontal backing force and overcome the jacking resistance, the thickness of the structural wall of the departure shaft and the thickness of the back reinforcement of the departure shaft are relatively large, which is not suitable for narrow construction sites; 2) Due to the It is heavy, so it is easy for the machine head to deviate from the travel axis during the excavation process in soft soil areas, especially when the machine head goes out and enters the hole, the deviation is particularly obvious, which makes it necessary to correct the deviation of the machine head in time during the excavation process, thereby increasing the The workload and corresponding costs of deviation correction reduce the propulsion work efficiency; 3) When adding the jack iron of the pipe joint, the jacking jack group must be retracted, and it is necessary to use the anti-retraction device installed in the starting shaft to prevent the pipe joint from retreating, and the operation is more complicated. The working efficiency is also low. In view of the fact that the original stop device has no stop force adjustment function, when the back force is large, it will cause damage to the pin hole of the pipe joint and even the pipe joint, thus losing the stop function and easily causing ground subsidence

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