Three-station isolation switch and position detection apparatus thereof, and detection shaft

Abstract

The invention relates to the field of electric appliance switch equipment and especially relates to a three-station isolation switch and a position detection apparatus thereof, and a detection shaft. The three-station isolation switch is connected with a switch position detection apparatus, a detection shaft of the switch position detection apparatus is provided with work position trigger structures and intermediate position trigger structures, each intermediate position trigger structure comprises a first trigger segment, a second trigger segment and a third trigger segment which are sequentially distributed in the direction of a circumference coaxial with the detection shaft, when the switch performs reciprocating motion between two work positions and an intermediate position, the first trigger segments and the third trigger segments of the intermediate position trigger structures enable the switch to have detection signals when the switch is at any positions, it is ensured that the position detection apparatus can output continuous detection signals, and the reliability of the detection apparatus is improved.

Description

technical field [0001] The invention relates to the field of electrical switchgear, in particular to a three-position isolating switch, a position detection device and a detection shaft thereof. Background technique [0002] The three-position isolating switch integrates the functions of the grounding switch and the isolating switch into one switch mechanism, forming a switch mechanism with three working positions: closing position, opening position and grounding position. The three-position isolating switch also has two The intermediate position is specifically the closing intermediate position between the closing position and the opening position and the grounding intermediate position between the opening position and the grounding position. In the actual use process, when the three-position isolating switch is overhauled, it is impossible to judge the position of the three-position isolating switch, so there is a great potential safety hazard. [0003] In the prior art, ...

AI Technical Summary

Problems solved by technology

[0004] The working principles of the above two detection devices are: the three-position isolating switch drives the transmission shaft of the detection device to rotate. At this time, the trigger structures with different installation angles on the rotating shaft will trigger the corresponding when the rotating shaft rotates to the corresponding angle. The trigger switch of the trigger switch can identify the position of the three-position isolating switch through the signal of the trigger switch. The trigger switch is not triggered at the moment of the adjacent trigger structure. At this time, the trigger signal produces intermittent points, which makes the detection signal of the detection device discontinuous, which causes the problem of inaccurate detection results of the position of the three-position isolating switch.

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