Breakable lifting method for underground rigid contact net

Abstract

The invention relates to a breakable lifting method for an underground rigid contact net, which comprises the following steps of: when a flood gate needs to be closed quickly, rotating a contact line body on the left side and a corresponding busbar by 90 degrees together, and moving a contact line body on the right side and a corresponding busbar rightwards together, so that the contact line body in the middle is separated from the adjacent contact line bodies at the two ends; the lifting arm control device controls the lifting arm to lift or the swing arm control device controls the swing arm to swing, the contact line body and the corresponding busbar are lifted at the same time, and the flood gate falls in a linkage mode. The busbar and the contact line are doubly fixed through busbar clamping force and the fixing bolts, the risks of sliding and dislocation in the horizontal direction in the operation process of the contact line and the potential safety hazard that the contact line falls off when the contact line is folded are thoroughly solved, and the stability, reliability and safety of a contact network system are guaranteed; the material can be produced in batches and has a smooth and beautiful surface.

Description

technical field [0001] The invention relates to the related technical field of urban rail transit catenary, in particular to a breakable lifting method of an underground rigid catenary. Background technique [0002] In the suspension and installation of underground rigid contact nets in the section of domestic urban rail transit crossing rivers and lakes, it is necessary to use breakable contact wires. The existing contact wire cross-sections are as follows: figure 1 As mentioned above, only relying on the clamping force of the busbar to fix, the busbar maintains the deformed state for a long time, the clamping force shows a linear downward trend, and the wire gap is gradually expanded from the original standard requirement of <1mm to 2.5-3.5mm. The top pantograph is close to the bottom of the contact line and continuously slides in one direction to collect electricity, causing the contact line to slide and dislocate in the busbar slot along the running direction of the l...

AI Technical Summary

Problems solved by technology

[0002] In the suspension installation of the underground rigid catenary in the domestic urban rail transit crossing river and lake sections, it is necessary to use breakable contact wires. The existing contact wire cross-sections are as follows: figure 1 As mentioned above, only relying on the clamping force of the bus bar to fix it, the bus bar remains deformed for a long time, the clamping force shows a linear downward trend, and the wire gap gradually expands from the original standard requirement of <1mm to 2.5-3.5mm. The top pantograph is close to the bottom of the contact line and continuously slides to take power in one direction, causing the contact line to slide and misalign in the bus bar slot along the running direction of the line; in case of natural disasters and wars, the anti-flood door It needs to be closed quickly. At this time, the contact line and busbar breakable device cooperates with the anti-flood door to operate in conjunction with the anti-flooding door. There is a safety hazard that the contact line will fall off when it is retracted, and the stability, reliability and safety of the catenary system cannot be guaranteed.

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