A drum-type off-excitation tap-changer with precise transmission rod installation

Abstract

The invention relates to a drum-shaped non-excitation tap switch for accurately installing a transmission rod. The drum-shaped non-excitation tap switch comprises a tap switch contact system, a switch self-locking system, a transmission rod coupler system, a transmission rod guide system, a transmission rod connecting system, an end cap installation system, a transmission rod assembling device and a transmission rod locking device. A brand-new breakthrough mode is adopted, the advantages of a traditional non-excitation tap switch are undertaken, the relation of installation requirements of a concentric reducer shaft end, a self-locking device and the tap switch is ingeniously applied, and limiting nails and an auxiliary drill installing device which are simple in process and low in cost are added and used in perfect cooperation in the installation process. The installation problem of the non-excitation tap switch is completely solved, installation and connection are reliable, accurate and easy, the installation dislocation or inaccuracy of a transformer factory is effectively avoided, the repeated installation performance is good, the running safety and reliability of the tap switch can be well ensured, and the possibility of after-overhaul repeated installation dislocation or angle deviation of the tap switch is completely eliminated.

Description

technical field [0001] The invention belongs to the field of electromechanical technology, and in particular relates to a drum-type non-excitation tap changer with precise installation of a transmission rod. Background technique [0002] There are two structures for the connection of the drive rod of the drum type off-excitation tap-changer on the market, the round shaft and the triangular shaft. The round shaft structure has been used for many years and is also the most widely used. The disadvantage of this structure is that the installation difficulty is left to its next home (transformer factory), and the transformer factory needs to determine the length of the transmission rod and the angle of its installation position. When the transformer factory installs the transmission rod, the box top of the transformer has been assembled. At this time, it is particularly inconvenient for the workers of the transformer factory to draw lines for the transmission rod and coupling to ...

AI Technical Summary

Problems solved by technology

This kind of mechanism is much better than the circular shaft structure, but the determination of the installation position angle is transferred to the relative angle between the installation position of the switch body and the horizontal axis of the switch, and the transformer factory is even more difficult to guarantee this angle, because the difference between the two The distance between them is very large, and there is no unified reference point

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