CN202145441U

CN202145441U - Maintenance AC contactor device without voltage

Info

Publication number: CN202145441U
Application number: CN201120263916U
Authority: CN
Inventors: 李罗文; 邹昭富
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-07-25
Filing date: 2011-07-25
Publication date: 2012-02-15
Anticipated expiration: 2021-07-25

Abstract

A maintenance AC contactor device without voltage arranges a mechanical latching apparatus and an automatic trip-out control apparatus; two sides of a latching board are fixed through a trough; Hanging buckles are fixed on a closing linker and a trip-out linker; up and down buffer springs are fixed on lower ends of the closing linker and the trip-out linker; a trough with latches at one side is opened at the latching board corresponding to the closing linker; a trough with an inclined plane at one side is opened at the latching board corresponding to the trip-out linker; left and right buffer springs are arranged at one side of the latching board; a bottom end of the closing linker is connected with a main contact through an insulated panel; buffer springs are fixed on three contacts of the main contact; and when the system is suddenly out of power, the automatic trip-out control apparatus carries out discharging on a trip-out coil through a capacitor to realize automatic trip-out. The abuse that the coil needs always maintenance of power for maintenance of the work state by the conventional AC contactor so that the coil consumes a great quantity of electric energy is overcome; operation is reliable; electric energy is saved; and the structure is simple.

Description

Do not have to press and keep A.C. contactor

Technical field

The utility model relates to a kind of A.C. contactor in distribution field, and particularly a kind of nothing is pressed and kept A.C. contactor.

Background technology

In the prior art, similar A.C. contactor structure and technical sophistication, its technical parameter is limitation especially; Raise or humid environment like voltage fluctuation, ambient temperature, very easily damage, the moving iron core in existing simultaneously A.C. contactor sucking coil energising back is by adhesive; The closed work of main contact; For keeping its coil of operating state need remain the energising attracting state, coil can consume a large amount of electric energy, causes very big waste.

The utility model content

To the deficiency that above-mentioned similar technology exists, the purpose of the utility model provides a kind of simple in structure, stable performance, particularly saves the nothing pressure of electric energy and keeps A.C. contactor.

The technical scheme of the utility model is: do not have to press and keep A.C. contactor; Comprise main contact, travel switch, combined floodgate DC electromagnet, tripping operation DC electromagnet, mechanical locking device and automatic trip control device; It is characterized in that: said mechanical locking device comprises the combined floodgate lever, tripping lever, buffer spring, left and right sides buffer spring and latch plate up and down; The combined floodgate lever is connected with combined floodgate DC electromagnet, combined floodgate trace; Tripping lever is connected with tripping operation DC electromagnet, tripping operation trace, is fixed with respectively on combined floodgate trace and the tripping operation trace to buckle, and the lower end of combined floodgate trace and tripping operation trace is fixed with buffer spring up and down; The latch plate place corresponding with the combined floodgate trace has groove with teeth on one side, has with the corresponding latch plate place of tripping operation trace to be the groove on inclined-plane on one side; The latch plate both sides are fixed through draw-in groove, can about movable, latch plate one side is provided with left and right sides buffer spring; Combined floodgate trace bottom is connected with main contact through an insulation board, also is fixed with buffer spring on 3 contacts of main contact.

Be provided with the control circuit of forming by system blackout relay, rectifier bridge, resistance, diode, electric capacity in the said trip free device, when the automatic trip control device has a power failure suddenly in system, breaking coil discharged, realize automatic trip through capacitor.

The utility model has the advantages that: the mechanical locking device that 1. is provided with, simple in structure, make A.C. contactor only need the moment energising to start; Utilize mechanical latching to keep; Main noddle on contactor still remains closed, and coil does not have the operation of pressure, when motor stops, also only needing instantaneous energising; A.C. contactor can make coil not have the operation of pressure when work like this, has saved the electric energy of coil institute loss fully; 2. because the setting of system blackout trip free device makes system under the situation of sudden power, can automatic trip, and the security hidden trouble that can not be in closure state always and brought because of mechanical latching effect main contact.

Description of drawings

Fig. 1 is the vertical view of the utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the B-B cutaway view of Fig. 1.

Fig. 4 is the C-C cutaway view of Fig. 1.

Fig. 5 is the structural representation of the utility model.

Fig. 6 is the electrical schematic diagram of the said automatic trip control device of the utility model.

Embodiment

Combine accompanying drawing at present, the technology contents of the utility model is described further.

Do not have to press and keep A.C. contactor; Comprise main contact 1, travel switch 2, combined floodgate DC electromagnet 3.1, tripping operation DC electromagnet 3.2, mechanical locking device and automatic trip control device 10, wherein mechanical locking device comprises combined floodgate lever 4, tripping lever 5; Buffer spring 6, left and right sides buffer spring 7 and latch plate 8 up and down; Combined floodgate lever 4 is connected with combined floodgate DC electromagnet 3.1, combined floodgate trace 4.1, and tripping lever 5 is connected with tripping operation DC electromagnet 3.2, tripping operation trace 5.1, is fixed with respectively on combined floodgate trace 4.1 and the tripping operation trace 5.1 and buckles 4.2,5.2; The lower end of combined floodgate trace 4.1 and tripping operation trace 5.1 is fixed with buffer spring 6 up and down; Have with teeth 8.2 groove 8.1 on one side with combined floodgate trace 4.1 corresponding latch plate 8 places, have one side with tripping operation trace 5.1 corresponding latch plate 8 places and be the groove 8.4 on inclined-plane 8.3, latch plate 8 both sides are fixed through draw-in groove; Can about movable, latch plate 8 one sides are provided with left and right sides buffer spring 7; Combined floodgate trace 4.1 bottoms are connected with main contact 1 through an insulation board 9, also are fixed with buffer spring 1.2 on 3 contacts 1.1 of main contact 1; To guarantee that main contact can contact well, circuit operation is stable.Be provided with the control circuit of forming by system blackout relay XTJ, rectifier bridge, resistance R, diode, electric capacity in the said trip free device 10; When automatic trip control device 10 has a power failure suddenly in system; To breaking coil TQ discharge, realize automatic trip through capacitor.

The operation principle of the utility model is: during work, and the instantaneous energising of switch knob, closing coil HQ gets electric moment; Combined floodgate lever 4 drives combined floodgate traces 4.1 and moves downward, and under the acting in conjunction of buffer spring 6 and left and right sides buffer spring 7 up and down, buckling on the combined floodgate trace 4.1 4.2 pinned by profile of tooth latch 8.2; Realize mechanical latching; Main contact 1 closure, this moment, the indication red light of travel switch 2 was bright, and closing coil HQ does not have the operation of pressure.When need shutting down, the instantaneous energising of trip button, breaking coil TQ gets electric moment tripping lever 5 and drives tripping operation traces 5.1 and move downward; Buckling of tripping operation trace 5.1 7.2 8.3 presses down along the inclined-plane; Under the acting in conjunction of up and down buffer spring 6 and left and right sides buffer spring 7, buckling on the combined floodgate trace 4.1 4.2 is extruded profile of tooth latch 8.2, realizes tripping grinder; Main contact 1 breaks off, and this moment, the indication green light of travel switch 2 was bright.

The operation principle of automatic trip control device 10: as shown in Figure 6; When system switches on; The rectifier bridge that four diodes in the automatic trip control device 10 are formed becomes alternating current into direct current; Make system blackout relay XTJ energising, the normally opened contact closure of system blackout relay XTJ and normally-closed contact breaks off, capacitor charging this moment and the coil TQ of tripping operation DC electromagnet 3.2 does not have electricity to pass through; When system's sudden power; System blackout relay XTJ does not have electric current to pass through; The normally opened contact of system blackout relay XTJ recovers off-state and normally-closed contact is closed; The coil TQ of DC electromagnet 3.2 of tripping this moment is switched on by capacitor discharge, and coil gets electric moment and drives tripping lever 5 actions, realizes automatic trip.

Claims

1. do not have to press and keep A.C. contactor; Comprise main contact (1), travel switch (2), combined floodgate DC electromagnet (3.1), tripping operation DC electromagnet (3.2), mechanical locking device and automatic trip control device (10); It is characterized in that: said mechanical locking device comprises combined floodgate lever (4); Tripping lever (5); Buffer spring (6), left and right sides buffer spring (7) and latch plate (8) up and down; Combined floodgate lever (4) is connected with combined floodgate DC electromagnet (3.1), combined floodgate trace (4.1), and tripping lever (5) is connected with tripping operation DC electromagnet (3.2), tripping operation trace (5.1), is fixed with respectively on combined floodgate trace (4.1) and the tripping operation trace (5.1) and buckles (4.2), (5.2); The lower end of combined floodgate trace (4.1) and tripping operation trace (5.1) is fixed with buffer spring (6) up and down; The latch plate (8) corresponding with combined floodgate trace (4.1) locates to have the groove (8.1) of (8.2) with teeth on one side, locates to have on one side with the corresponding latch plate (8) of tripping operation trace (5.1) to be the groove (8.4) on inclined-plane (8.3), and latch plate (8) both sides are fixed through draw-in groove; Can about movable, latch plate (8) one sides are provided with left and right sides buffer spring (7); Combined floodgate trace (4.1) bottom is connected with main contact (1) through an insulation board (9), is fixed with buffer spring (1.2) on 3 contacts (1.1) of main contact (1).

2. nothing according to claim 1 is pressed and is kept A.C. contactor; It is characterized in that: be provided with the control circuit of forming by system blackout relay (XTJ), rectifier bridge, resistance (R), diode, electric capacity in the said trip free device (10); When automatic trip control device (10) has a power failure suddenly in system; To breaking coil (TQ) discharge, realize automatic trip through capacitor.