Active driving type folding and unfolding support device, mobile contact net and operation method

Abstract

The invention relates to an active drive type folding and unfolding support device, a mobile contact net and an operation method. The device comprises a stand column, a support mechanism, a moving mechanism, a connecting piece, a motor and a chain; the moving mechanism can move in the length direction of the stand column, one end of the connecting piece is directly or indirectly connected with the stand column, and the other end of the connecting piece is connected with the support mechanism; one end of the supporting mechanism is movably connected with the moving mechanism; the motor drives the chain to rotate to drive the moving mechanism to move, so the free end of the supporting mechanism drives the contact line and / or the carrier cable to move to a working position or a non-working position or to be switched between the working position and the non-working position. According to the invention, the situation of bending points in the prior art can be effectively avoided, and the technical defect of arcs in the prior art is avoided; on the other hand, each stand column in the whole mobile contact network is provided with an active driving type folding and unfolding supporting device, and the situations that in the prior art, pulling cannot be conducted, and a telescopic mechanism cannot be unfolded in place are avoided.

Description

technical field [0001] The invention belongs to the technical field of mobile catenary, and in particular relates to an actively driven retractable support device, a mobile catenary using the device and an operation method. Background technique [0002] In the existing catenary, gantry is arranged at both ends, and traveling devices are arranged on the gantry, and are respectively connected to the two ends of the moving contact wire assembly. When the traveling device travels, it can drive the contact wire assembly to move and drive the entire contact wire to move. [0003] The length of the catenary is generally 800 meters, and the length of the mobile catenary for the 10,000-ton line can reach about 1700 meters. If there is a huge defect in the above method, the solution is to drive the contact wire assembly in the entire mobile catenary to move from the non-working position to the working position through a tensioned contact wire, and the contact wire assembly is installe...

AI Technical Summary

Problems solved by technology

If there is a huge defect in the above method, the solution is to drive the contact wire assembly in the entire mobile catenary to move from the non-working position to the working position through a tensioned contact wire, and the contact wire assembly is installed on the telescopic mechanism. In this state, the telescopic mechanism retracts, and the contact line is on one side of the railway (non-working position); when the traveling devices at both ends move to the working position, it drives the tensioned contact line to move from the non-working position to the working position (above the railway), The force that controls the expansion of the telescopic mechanism comes from the contact line. The problems in this way are: please refer to figure 1 shown

[0005] 2. There is a situation that it cannot be pulled. The traveling device in the mast moves and pulls the first telescopic mechanism to stretch out. When the first telescopic mechanism is completely stretched, the bearing between the traveling device and the first column telescopic mechanism The force cable and / or the contact wire is stretched to the maximum movement amount, it can no longer be pulled, and there is a situation that it cannot be pulled. At this time, there are still telescopic mechanisms that have not been pulled in place in the entire moving section, that is, there are still several , especially when the telescopic mechanism close to the middle column still has not finished walking to the working position

This kind of solution will not be able to pull, and the pull will not be in place, especially for the middle part that cannot be pulled

[0006] 3. Only a small force is needed to form a bending point in the tensioned contact line, so in the above-mentioned way, the contact line in the entire catenary moving section will form a large arc, and the entire arc The width of the pantograph will exceed the power-taking width range of the pantograph, and the entire mobile catenary cannot be used

But the problem is that when the running devices at both ends are in place, the contact line can no longer provide the pulling force for horizontal movement, especially for the telescopic mechanism of the column in the middle, even if the slider is lifted upward by the counterweight When the stretching force is no longer provided or can no longer be provided in the contact line, the telescopic mechanism on the column in the middle position of the mobile catenary will not be able to expand further, and the contact line cannot be effectively pushed to the working position

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