Pulling plate structure of explosion-proof dry-type transformer iron core

Abstract

The invention provides an explosive-proof dry transformer core pulling plate structure, comprising a pulling plate, a clamp part and a pin shaft; the pulling plate is connected with the clamp plate web of the clamp part by the pin shaft; one side of the pulling plate corresponding to the clamp plate web is respectively welded with a stiffener; one end of the pin shaft is a step shape; the corresponding positions of the pulling plate, the stiffener and the clamp plate web are provided with holes corresponding to the pin shaft, thus forming a step-shaped pin hole. In the invention, the pin shaft is arranged from one side which is close to the core, the position limiting function is provided and naturally has the function of clamping the clamp part, thus preventing the upper and lower movement; the pulling plate, the stiffener and the clamp plate web are rigidly connected, thus preventing the forward and backward movement of the pin shaft, avoiding the risk of falling of the pin shaft (namely falling of pin), and needing no bolts for locking the pin shaft at the same time. The pulling plate connection structure has simple process and simple structure, ensures the firmness, rigidness and stabilization of the whole device, is applicable to the transformers with large and intermediate capability, more especially to the explosive-proof dry transformers with large and intermediate capability, and is safe and reliable.

Description

Technical field [0001] The invention belongs to the technical field of transformer structure, and is applied to large and medium-capacity transformers, especially large and medium-sized flameproof dry-type transformers, and specifically is a flameproof dry-type transformer iron core pulling plate structure. Background technique [0002] The large- and medium-capacity flameproof dry-type transformers usually have a capacity of 1250kVA~2500kVA. The iron core of small-capacity products usually adopts the tension screw structure, while the large-capacity flameproof transformer mostly adopts the pull-plate structure, the purpose is to increase the whole The strength of the clamping structure, because when the transformer capacity increases, the weight of the body and the generated electric power also increase significantly, and the bolt connection is difficult to ensure stability. Therefore, the clamping of large-capacity flameproof transformer cores generally uses pull plates Because...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: there are defects in the existing large and medium-sized transformer iron core pull plate structure, especially it cannot meet the requirements of reliable connection between the pull plate and the clamp for the explosion-proof dry-type transformer

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