Pipe penetrating and drawing trolley for box girder prestressed duct construction and pipe penetrating and drawing method thereof

Abstract

The invention provides a pipe penetrating and drawing trolley for box girder prestressed duct construction, which comprises a chassis, a pipe penetrating and drawing mechanism, a working platform, a lifting mechanism and a reel mechanism. In pipe penetrating and drawing, the trolley is driven for moving to a pipe penetrating and drawing position, the lifting mechanism and a transverse moving oil cylinder and a longitudinal moving oil cylinder in the pipe penetrating and drawing mechanism are adjusted to enable a roller assembly to be aligned to the position of a pre-penetrating and drawing pipe, then the pre-penetrating and drawing rubber pipe is clamped by a driving roller and a clamping roller in the pipe penetrating and drawing mechanism, a motor of the driving roller is started, pipe penetrating and drawing are started, and the reel mechanism is used for placing the pre-penetrating rubber pipe and smoothening and stacking the drawn rubber pipe. According to the pipe penetrating and drawing trolley, the automatic pipe penetrating and drawing functions can be achieved, meanwhile, the rubber pipes can be automatically straightened out and stacked, and the pipe penetrating and drawing method is high in efficiency and quality, saves manpower and reduces construction time.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a pipe threading and pulling trolley used for box girder prestressed tunnel construction and a pipe threading and pulling method. Background technique [0002] The application of prestress on the box girder can reduce or offset the positive and negative bending moments and the load generated by the self-weight of the box girder, and improve the bearing capacity of the box girder. Strand tension is achieved. During the construction of the prefabricated box girder, the prestressed hole is formed by pulling and pulling the rubber tube on the box girder. Specifically, when the steel frame of the box girder is bound, the positioning net designed according to the prestressed hole is bound to the steel frame, and then according to the positioning The position of the net is piped. After the pipe is completed, the concrete is poured. After the concrete reaches a certain stren...

AI Technical Summary

Problems solved by technology

[0003] At present, the pipe threading operation of prefabricated box girders is usually completed by a semi-automatic pipe threading machine, but the semi-automatic pipe threading machine requires the cooperation of three people, two of whom straighten the rubber hose and transport it to the pipe threading machine, and the other remotely operates the pipe threading The machine is pulled and guided in the front. Due to the messy stacking of the reused rubber hoses, the rubber hose parts overlap each other, which is difficult to straighten out. The work intensity is high. Generally, it takes about 3 hours for a single-hole box girder rubber hose to wear the hose, and it takes a long time to wear the hose.

[0004] The pipe pulling operation of the prefabricated box girder uses the hoist to pull the rubber hoses, and two hoses can be pulled at a time, but the damage to the rubber hoses during pulling is relatively large, and the diameter of the rubber hoses is likely to become thinner, and the rubber hoses are easy to pull out, posing a safety hazard. Moreover, after the rubber hose is pulled out, workers need to stack the pulled out rubber hose, and the stacking is messy

In addition, the existing tube extubation machine can also be used for extubation. The existing extubation machine uses chains to hold tiles and staggered extubation, which has poor synchronization and greater damage to the rubber hose, and there is no rubber hose stacking device.

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