CN208188994U

CN208188994U - Switch does not make the warning device of zero-bit when a kind of maintenance

Info

Publication number: CN208188994U
Application number: CN201820871061.9U
Authority: CN
Inventors: 杨亚京; 杨宁; 尹超
Original assignee: Xinxing Ductile Iron Pipes Co Ltd
Current assignee: Xinxing Ductile Iron Pipes Co Ltd
Priority date: 2018-06-06
Filing date: 2018-06-06
Publication date: 2018-12-04
Anticipated expiration: 2028-06-06

Abstract

The utility model relates to the warning devices that switch when a kind of maintenance does not beat zero-bit.Including switch, first sets of contacts of switch connects " long-range " control circuit, third sets of contacts connects control circuit " on the spot ", and the coil of the first sets of contacts concatenation first contactor of the switch SA is followed by control power supply, and the coil that third sets of contacts connects concatenation second contactor is followed by control power supply；The coil of the second sets of contacts concatenation zero-bit contactor of the switch is followed by control power supply；The normally open contact of the first contactor and the normally open contact of second contactor are simultaneously successively followed by control power supply after connecing with the coil tandem of the normally closed interlock of the zero-bit contactor and third contactor；The normally open contact of the third contactor is concatenated with electric bell is followed by control power supply.Its structure is simple, forgets to play the prompt of zero position switch energy automatic alarm in maintenance.

Description

Switch does not make the warning device of zero-bit when a kind of maintenance

Technical field

The utility model relates to the warning devices that switch when a kind of a kind of warning device, in particular to maintenance does not beat zero-bit.

Background technique

In iron-smelter, big and small, row color various kinds equipment is innumerable, equipment be often by electrically with it is mechanical Perfect combination come complete technique requirement movement, when equipment fault needs repairing work to overhaul, for the person of maintenance personal Safety, it is desirable that before maintenance that electric control system is all off, therefore, it is desirable to manually to go the switch on control cabinet by " just Ground " or " long-range " reach " zero-bit " position, and mechanical part is allowed to be in " paralysis " state.But since work is neglected, or maintenance Task time is urgent, and people, which can sometimes ignore, beats zero-bit the step, and it is hidden that this just causes very big safety to maintenance personal Suffer from, when someone's maloperation switch, personnel Under Repair are damaged.

Summary of the invention

The shortcomings that in order to overcome the prior art, switch does not play the alarm dress of zero-bit when the utility model provides a kind of maintenance It sets.Its structure is simple, forgets to play the prompt of zero position switch energy automatic alarm in maintenance.

The technical solution adopted by the utility model to solve its technical problems is that: including switch, the first sets of contacts of switch " long-range " control circuit is connect, third sets of contacts connects control circuit " on the spot ", the first sets of contacts concatenation first of the switch SA The coil of contactor is followed by control power supply, and the coil that third sets of contacts connects concatenation second contactor is followed by control power supply；It is described to open The coil of the second sets of contacts concatenation zero-bit contactor closed is followed by control power supply；The normally open contact of the first contactor and The normally open contact of two contactors and the successively coil tandem with the normally closed interlock of the zero-bit contactor and third contactor after connecing It is followed by control power supply；The normally open contact of the third contactor is concatenated with electric bell is followed by control power supply.

The utility model structure is simple, when " long-range " or " on the spot " button does not reach " zero-bit " position, electric bell meeting It sounds, people is prompted to reach zero-bit, reduce security risk, guarantee personal safety.

Detailed description of the invention

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is the utility model principle figure.

Specific embodiment

As shown in Figure 1, the utility model includes switch SA, the first sets of contacts of switch SA connects " long-range " control circuit, the Three sets of contacts connect control circuit " on the spot ", and the coil KM1 of the first sets of contacts concatenation first contactor of the switch SA is followed by Power supply L, N are controlled, the coil KM2 that third sets of contacts connects concatenation second contactor is followed by control power supply L, N；The of the switch SA The coil KM0 of two sets of contacts concatenation zero-bit contactor is followed by control power supply L, N；The normally open contact KM1- of the first contactor 1 and second contactor normally open contact KM2-1 and successively connect with the normally closed interlock KM0-1 of the zero-bit contactor and third after connecing The coil KM3 concatenation of tentaculum is followed by control power supply L, N；After the normally open contact KM3-1 of the third contactor is concatenated with electric bell HA Meet control power supply L, N.

First contactor, second contactor and the third contactor can be replaced with intermediate relay.

When repair apparatus is forgotten to beat zero position switch, then switch SA is in " long-range " or " on the spot " position, at this moment, first Perhaps the KM2 of second contactor obtains electric its contact KM1-1 or KM2-1 and is in closed state, third the coil KM1 of contactor The coil KM3 of contactor obtains electric, and the normally open contact KM3-1 of third contactor closure, electric bell HA obtains electric alarm, reaches prompt and makees With.

Claims

1. switch does not make the warning device of zero-bit when a kind of maintenance, it is characterised in that: including switch (SA), switch the first of (SA) Sets of contacts connects " long-range " control circuit, and third sets of contacts connects control circuit " on the spot ", the first sets of contacts of the switch (SA) The coil (KM1) of concatenation first contactor is followed by control power supply (L, N), and third sets of contacts connects the coil of concatenation second contactor (KM2) it is followed by control power supply (L, N)；The coil (KM0) of the second sets of contacts concatenation zero-bit contactor of the switch (SA) is followed by Control power supply (L), (N)；The normally open contact (KM1-1) of the first contactor and the normally open contact (KM2- of second contactor 1) it and after connecing successively concatenates and is followed by with the coil (KM3) of the normally closed interlock (KM0-1) of the zero-bit contactor and third contactor It controls power supply (L, N)；The normally open contact (KM3-1) of the third contactor is concatenated with electric bell (HA) is followed by control power supply (L, N).

2. switch does not make the warning device of zero-bit when maintenance according to claim 1, it is characterised in that: described first connects Tentaculum, second contactor and third contactor can be replaced with intermediate relay.