Hoist segment crane for large shield machine

Abstract

A winch-type segment-lifting machine applicable to a large shield machine comprises a segment-lifting device (2) provided between two operation tracks (1) arranged in parallel, and a power buggy (3) used to drive the segment-lifting device (2) to move along the operation tracks (1). The segment-lifting device (2) comprises two transport beams (21) respectively located under the operation tracks (1), four first driven buggies (22) provided between the two transport beams (21) and the two operation tracks (1), and two winch mechanisms (23) installed between the two transport beams (21). The two winch mechanisms (23) are disposed symmetrically and rotated 180° to each other. The winch-type segment-lifting machine enables a significant reduction in a net size of a buggy, enables buggies to be lifted independently or simultaneously, can lift or lower the buggy stably, has a small impact force, is operable at a high speed, and has high efficiency.

Description

technical field [0001] The invention relates to a winch-type segment crane suitable for a large-scale shield machine. Background technique [0002] With the rapid development of the national economy, my country's urbanization process continues to accelerate, people's demand for public transportation continues to increase, and domestic urban subway tunnels, railway tunnels, road tunnels and other tunnels continue to increase demand. The method of using prefabricated concrete segment support in the construction of underground tunnels by the shield method is widely used for its advantages of small impact on the ground and underground environment, fast excavation speed, and small surface settlement. [0003] Nowadays, with the gradual popularization and application of large-diameter shield machines, the requirements for high strength, high precision, high quality, high impermeability and high appearance quality are put forward for the segment, so it is also proposed to use vacuu...

AI Technical Summary

Problems solved by technology

[0004] Moreover, because the current standard segment crane uses chain hoists as hoisting mechanism 23, it is limited by the structural characteristics of the chain hoist itself, which makes the C dimension of the hook larger, that is, the upper limit dimension of the wheel tread and the hook is larger, and its The lifting height cannot be increased; in addition, limited to the working level of the chain hoist, it is not suitable for fast lifting of large-diameter segments (segment weight > 7.5t), so traditional standard segment cranes cannot meet construction needs

Moreover, the use of mechanical or hydraulic grabbing segments is limited by the size of the space, and its lifting capacity can no longer meet the segment hoisting work of large-diameter shield machines, and its high failure rate cannot meet the requirements of rapid construction progress.

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