Power cabinet with nonlinear frame vibration reduction structure

Abstract

The invention discloses a power cabinet with a nonlinear frame vibration reduction structure. The power cabinet comprises a power cabinet body which has a structure of a combination of an inner framework type framework structure and an outer metal plate material, an electric power cabinet base integrally manufactured with the power cabinet body is arranged on the lower portion of the power cabinetbody, an electric power element is arranged in the power cabinet body and located above the electric power cabinet base, the inner frame type framework structure of the power cabinet is formed by assembling and splicing strip-shaped nonlinear structural parts, and a vibration reduction planet carrier used for stabilizing the electric power element in the power cabinet is installed in the electricpower cabinet base. According to the invention, a nonlinear structural member is designed and two application modes are developed, the non-linear structural member is used as the main body skeleton structure of the power cabinet body, generalized rigidity of the non-linear structural member is changed by applying a torque offset mode, non-linear elastic restoring force and friction damping are organically combined, vibration isolation and vibration reduction capacity of the power cabinet body is improved, and transverse bending force, longitudinal bending force, torsion force and bending-torsion coupling force borne by the non-linear structural member are effectively resisted.

Description

technical field [0001] The invention relates to the technical field of power equipment, in particular to a power cabinet with a nonlinear frame damping structure. Background technique [0002] As the name implies, the electrical control cabinet is an electrical cabinet for electrical control, used to store voltmeters, ammeters or other storage equipment for electrical equipment, and to protect these equipment from short circuits, bumps and other accidents. With the advancement of science and technology With the improvement of the technical level, the design of the power cabinet is becoming more and more scientific. Many power cabinets are equipped with corresponding heat dissipation structures and preventive mechanisms in order to improve their performance. The electrical control cabinet has traditional relay and PLC control, which is relatively simple. The control is controlled by a relay, and the complex control is generally controlled by PLC. PLC is programmable logic con...

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Problems solved by technology

[0004] However, the idea of ​​vibration reduction in the prior art is to add a series of auxiliary mechanisms to add core ordinary elastic elements for vibration reduction, which involves two problems. One is that no matter how ever-changing the auxiliary mechanism is, it is necessary to add springs to isolate the vibration. The power cabinet itself is a sheet metal structure, and the elastic force of the spring is relatively concentrated. On the contrary, the reciprocating spring may cause secondary vibration of the power cabinet body with the sheet metal structure, especially in the field wind vibration state. Components cause adverse effects. On the other hand, the ordinary springs added in the prior art have the characteristics of positive stiffness. The positive stiffness causes the vibration damping effect and quality to be greatly reduced. It is not obvious in occasional vibrations, and outdoors due to wind excitation Under the influence of wind vibration, the effect difference between positive stiffness and negative stiffness vibration isolation stability will be more obvious

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