Long life switchgear handcart

Abstract

A long-service-life switchgear handcart is mainly composed of components of a handcart frame (1), a chassis (2), a contact arm (3), a contact (4), a walking motor (5) and a contact opening-and-closing motor (7). Because no contact tension spring is utilized and the contact is at an open position in moving the handcart, contact resistance increase of the contact caused by wearing aging and tension fatigue of the tension spring is prevented, service life of the handcart contact is prolonged and contact resistance of the contact is reduced. Furthermore cooperation of a handcart walking resistance and a contact friction force in movement of the handcart is prevented so that higher mobility of the handcart is realized. The long-service-life switchgear handcart can be widely applied in high-voltage, medium-voltage and low-voltage armored movable switchgears in power generation, power distribution and power transmission, thereby effectively improving continuity and reliability in power supplying.

Description

Technical field [0001] The invention belongs to the category of electric equipment, and relates to a switch cabinet handcart, in particular to a long-life switch cabinet handcart. Background technique [0002] With the rapid development of industrialization, the supporting switchgear must have high power supply continuity to ensure the reliability of power supply in the place. The current switchgear types mainly include armored removable type and armored fixed type. . Since faults are unavoidable, measures should be taken in the product structure. In the event of a fault, its functions can be repaired quickly to meet the requirements of power supply continuity. The advantage of the armored fixed type is that the structure is relatively simple, and the probability of failure is low, but its disadvantage is that when a failure occurs, it is very inconvenient to overhaul and the power outage takes a long time. The advantage of the armored removable type is that it can be quic...

AI Technical Summary

Problems solved by technology

The advantage of the armored fixed type is that the structure is relatively simple, and the probability of failure is low, but its disadvantage is that when a failure occurs, it is very inconvenient to overhaul and the power outage takes a long time

The advantage of the armored removable type is that it can be quickly replaced on the handcart installed in the switch cabinet, so after a fault occurs, the power outage time is greatly shortened. The head failure rate remains high, which seriously restricts the overall performance of the armored removable switchgear

[0003] Originally, the chassis car was used to carry electrical components with a high failure rate in the withdrawable switchgear, such as circuit breakers, load switches, transformers, grounding switches, etc. When the corresponding electrical components fail, they can be replaced in a short time , to shorten the power outage time and improve the continuity of power supply, however, the high failure rate of the connector, and the location of this part is hidden inside the switch cabinet, which is not convenient for the operator to patrol, so that it affects the service life of the overall equipment of the switch cabinet

Images