CN203225182U

CN203225182U - No-voltage maintaining contactor

Info

Publication number: CN203225182U
Application number: CN 201320257684
Authority: CN
Inventors: 李罗文
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-05-14
Filing date: 2013-05-14
Publication date: 2013-10-02
Anticipated expiration: 2023-05-14

Abstract

The utility model provides a no-voltage maintaining contactor provided with a main contact, a travel switch, a switching-in DC electromagnet, a tripping DC electromagnet, a mechanical locking device, a tripping device capable of working during system power failure and a touch device. The tripping device capable of working during system power failure is provided with a capacitor. The capacitor is connected to a circuit. When system power failure occurs, an XTA press button is pressed down. Tripping coil discharging is conducted through the capacitor, so that tripping is realized. If a capacitor discharging circuit loses efficacy, tripping can still be realized through touching the touch device manually or mechanically. By using the no-voltage maintaining contactor provided by the utility model, a shortcoming that a coil consumes a large amount of electric energy since the coil needs to be kept in an energized state all the time in order to keep a prior AC contactor in a working state is overcome. And the no-voltage maintaining contactor is reliable and safety in operation, low in electricity consumption and simple in structure.

Description

Do not have to press and keep contactor

Technical field

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

Background technology

In the prior art, similar interchange or D.C. contactor structure and technical sophistication, its technical parameter is limitation especially, raises or humid environment as voltage fluctuation, ambient temperature, very easily damages, and it is also unstable in the running, the moving iron core of existing interchange simultaneously or D.C. contactor sucking coil energising back is by adhesive, and main contact is closed works, and need remain the energising attracting state for keeping its coil of operating state, coil can consume a large amount of electric energy, causes very big waste.

The utility model content

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

The technical solution of the utility model is: do not have to press and keep contactor, comprise main contact, travel switch, the combined floodgate DC electromagnet, the tripping operation DC electromagnet, mechanical locking device, but system blackout is tripgear and touch device still, it is characterized in that: described mechanical locking device comprises the combined floodgate lever, tripping lever, buffer spring up and down, left and right sides buffer spring and latch plate, combined floodgate lever and combined floodgate DC electromagnet, the combined floodgate trace is connected, tripping lever and tripping operation DC electromagnet, the tripping operation trace is connected, fixedly buckle respectively on combined floodgate trace and the tripping operation trace, fixedly there is buffer spring up and down the lower end of combined floodgate trace and tripping operation trace, the latch plate place corresponding with the combined floodgate trace has groove with teeth on one side, and the latch plate place corresponding with the tripping operation trace has and be the groove on inclined-plane on one side; The latch plate both sides are fixed by 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 by an insulation board, on 3 contacts of main contact buffer spring is arranged fixedly also; The described device that touches comprises and touches shifting block, touches call wire that wherein touch shifting block and be connected with an end that touches call wire, the other end that touches the transduction line is fixed on the tripping lever.

But described system blackout still is provided with capacitor in the tripgear, and this capacitor is connected in the circuit, when system blackout, presses the XTA button, by capacitor breaking coil is discharged, and realizes tripping operation; The capacitor discharge loop still can be touched by manual or machinery and realize tripping operation if lost efficacy.

The described device that touches is the manual or moving device that touches of machinery, the concrete fixed form of call wire of touching of touching device is to bore an aperture on the tripping lever, at the end that touches call wire one snap close is arranged, and call wire passes from aperture, the snap close size is bigger than aperture, guarantees that snap close can not fall from aperture.

The utility model has the advantages that: the 1. mechanical locking device of She Zhiing, simple in structure, make 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, also only needs instantaneous energising when motor stops, contactor can make coil not have the operation of pressure when work like this, has saved the electric energy of coil institute loss fully; But 2. because still tripgear and the setting of touching device of system blackout, the system that makes can trip under situation about having a power failure, and under the situation of capacitor discharge loop inefficacy, still can touch by manual or machinery and realize tripping operation, and can not be in the security hidden trouble that closure state brings because of mechanical latching effect main contact always.

Description of drawings

Fig. 1 is vertical view of the present 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 structural representation of the present utility model;

Fig. 6, Fig. 7 are control circuit figure of the present utility model.

Embodiment

Now by reference to the accompanying drawings, technology contents of the present utility model is described further.

With reference to figure 1,2,3,4,5,6,7, do not have to press and keep contactor, comprise main contact 1, travel switch 2, combined floodgate DC electromagnet 3.1, tripping operation DC electromagnet 3.2, mechanical locking device, but system blackout is tripgear 10 and touch device still, wherein mechanical locking device comprises combined floodgate lever 4, tripping lever 5, buffer spring 6 up and down, left and right sides buffer spring 7 and latch plate 8, combined floodgate lever 4 and combined floodgate DC electromagnet 3.1, combined floodgate trace 4.1 is connected, tripping lever 5 and tripping operation DC electromagnet 3.2, tripping operation trace 5.1 is connected, fixedly buckle 4.2 respectively on combined floodgate trace 4.1 and the tripping operation trace 5.1,5.2, fixedly there is buffer spring 6 up and down the lower end of combined floodgate trace 4.1 and tripping operation trace 5.1, latch plate 8 places corresponding with combined floodgate trace 4.1 have with teeth 8.2 groove 8.1 on one side, latch plate 8 places corresponding with tripping operation trace 5.1 have and are the groove 8.4 on inclined-plane 8.3 on one side, latch plate 8 both sides are fixed by 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 by an insulation board 9, on 3 contacts 1.1 of main contact 1 buffer spring 1.2 are arranged fixedly also, and to guarantee that main contact can contact well, circuit operation is stable; Touching device comprises and touches shifting block 11.1, touches call wire 11.2, and wherein touch shifting block 11.1 and be connected with an end that touches call wire 11.2, the other end that touches call wire 11.2 is fixed on the tripping lever 5.Touch device and touch device for manual or machinery, the call wire 11.2 concrete fixed forms of touching device are to bore an aperture on the tripping lever 5, end at call wire 11.2 has a snap close 11.3, call wire 11.2 passes from aperture, snap close 11.3 is bigger than aperture, guarantees that snap close 11.3 can not fall from aperture.

But system blackout still is provided with capacitor in the tripgear, and this capacitor is connected in the circuit, when system blackout, presses the XTA button, to breaking coil TQ discharge, realizes tripping operation by capacitor; The capacitor discharge loop still can be touched by manual or machinery and realize tripping operation if lost efficacy.

Operation principle of the present utility model is: during work, the instantaneous energising of switch knob QA, closing coil HQ gets electric moment, combined floodgate lever 4 drives combined floodgate trace 4.1 and moves downward, 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 pinned by profile of tooth latch 8.2, realizes mechanical latching, main contact 1 closure, closing coil HQ does not have the operation of pressure.When needing to shut down; the instantaneous energising of trip button TA; breaking coil TQ gets electric moment; tripping lever 5 drives tripping operation trace 5.1 and moves downward; buckling of tripping operation trace 5.1 5.2 8.3 presses down along the inclined-plane, 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 is extruded profile of tooth latch 8.2; realize tripping grinder, main contact 1 disconnects.

When system blackout, disconnect as needs main contact 1, can press the XTA button, capacitor will be to breaking coil TQ discharge like this, and this coil gets electric moment, can drive tripping lever 5 actions, realizes tripping operation.If work as system blackout, disconnect main contact 1 as need, and button XTA was when losing efficacy, can be manually or machinery touch shifting block 11.1, drive tripping levers 5 and move with the call wire 11.2 that touches that touches that shifting block 11.1 links to each other this moment, realization is tripped.

Claims

1. do not have to press and keep contactor, comprise main contact (1), travel switch (2), combined floodgate DC electromagnet (3.1), tripping operation DC electromagnet (3.2), mechanical locking device, but system blackout is tripgear (10) and touch device still, it is characterized in that: described mechanical locking device comprises combined floodgate lever (4), tripping lever (5), buffer spring (6) up and down, left and right sides buffer spring (7) and latch plate (8), combined floodgate lever (4) and combined floodgate DC electromagnet (3.1), combined floodgate trace (4.1) is connected, tripping lever (5) and tripping operation DC electromagnet (3.2), tripping operation trace (5.1) is connected, fixedly buckle (4.2) respectively on combined floodgate trace (4.1) and the tripping operation trace (5.1), (5.2), fixedly there is buffer spring (6) up and down the lower end of combined floodgate trace (4.1) and tripping operation trace (5.1), 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, the latch plate (8) corresponding with tripping operation trace (5.1) located to have and is the groove (8.4) on inclined-plane (8.3) on one side, latch plate (8) both sides are fixed by 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) by an insulation board (9), and go up 3 contacts (1.1) of main contact (1) fixedly buffer spring (1.2); The described device that touches comprises and touches shifting block (11.1), touches call wire (11.2) that wherein touch shifting block (11.1) and be connected with an end that touches call wire (11.2), the other end that touches call wire (11.2) is fixed on the tripping lever (5).

2. nothing according to claim 1 is pressed and is kept contactor, it is characterized in that: but described system blackout still is provided with capacitor in the tripgear (10), and this capacitor is connected in the circuit, when system blackout, press the XTA button, to breaking coil (TQ) discharge, realize tripping operation by capacitor.

3. nothing according to claim 1 and 2 is pressed and is kept contactor, it is characterized in that: the described device that touches touches device for manual or machinery, that touches device touches the concrete fixed form of call wire (11.2) for boring an aperture at tripping lever (5), at the end that touches call wire (11.2) one snap close (11.3) is arranged, touch call wire (11.2) and pass from aperture, snap close (11.3) size is bigger than aperture.