Tripping device of load switch spring mechanism

Abstract

The invention relates to tripping device of spring mechanism in load switch. The mechanism includes tripping shaft installed on fixed basal body (FBB) and tripping plate. Through jointed shaft being installed on FBB, the tripping plate can be rotated under action of spring mechanism. Cross section of the tripping rotating shaft possesses an entity part and a notch part. Characters are that a transition plate is installed on FBB; back end of the transition plate is hinge jointed to FBB; outside front end of the transition plate can be leaned against the tripping shaft; a sidestep is setup on inner side at front end of the transition plate; a baffle pin stood out of the tripping plate is installed at end of the tripping plate; the pin can be clipped on the said sidestep and leaned against surfaces perpendicular each other approximately in the sidestep. Advantages are: small tripping resistance high reliability, small abrasion, and long service life.

Description

technical field [0001] The invention belongs to medium and high voltage switchgear, and relates to a tripping device of a load switch spring mechanism. Background technique [0002] The load switch spring mechanism tripping device is widely used in various medium and high voltage switchgears. Its function is to realize the release of other related components when specific conditions occur during the operation of the switch, such as short circuit, overload, human operation, etc. linkage or blocking. The existing load switch spring mechanism tripping device generally has the structure shown in Figure 1, which includes a tripping shaft 2' and a tripping plate 3' installed on a fixed base 1', and the tripping plate passes through the hinged shaft. Installed on a fixed base, and can rotate in a certain direction under the action of the tripping spring, the tripping shaft is located on the rotation track of the end of the tripping plate, and there is a gap within a certain angle ...

AI Technical Summary

Problems solved by technology

The tripping device of this structure has the following defects: 1. Under normal working conditions, since the pressure of the tripping spring and the tripping plate is completely borne by the tripping shaft, the resistance to be overcome by the tripping shaft is relatively large when tripping. When the tripping force is small, it is easy to fail to rotate due to large frictional resistance, resulting in tripping failure and affecting the reliability of the equipment; 2. Due to the large friction between the tripping plate and the tripping shaft, the parts Greater wear and tear, shortening the service life of the product

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