CN203787313U - Interlocking device for contactors - Google Patents

Abstract

The utility model discloses an interlocking device for contactors. The interlocking device comprises a seesaw, a bracket and elastic holding parts. The seesaw and the bracket are movably connected to form a lever mechanism. One elastic holding part is arranged between each of the two ends of the seesaw and the bracket. According to the technical scheme of the utility model, when one contactor is energized and pulled in, the other contactor cannot be switched on when being energized, and when the two contactors are in a switching-off state, any contactor can be switched on when being energized. The interlocking device in the technical scheme of the utility model adopts a purely mechanical interlocking mode, is not assisted by electrical interlocking, and is strong in suction force, simple in structure and convenient for operation personnel to assemble.

Description

A kind of interlock for contactor

Technical field

The utility model belongs to electrical engineering and field of mechanical technique, is specifically related between contactor, carry out in a kind of electric power system mechanical interlocked a kind of device.

Background technology

In electric power control loop, sometimes there is a kind of situation: a power on circuitry, another circuit definitely can not be switched on, and for example two electric equipments can not be opened simultaneously.Also have a kind of situation, the in the situation that of two equal power-off of circuit, wherein any power on circuitry, another circuit definitely can not be switched on.In above-mentioned two situations, just require can not connect at the switch of controlling two circuit, when a switch closes a floodgate, another switch must maybe cannot be realized combined floodgate by separating brake simultaneously.And the mode that realizes this function and be necessary for pure machinery, can not be realized by normally-open normally-close point by electrical means.But, realize in the prior art of above-mentioned functions, the stroke to contactor, the reset of clappers and mounting means have very large restriction, and structure is generally comparatively complicated, in application process, make cabinet design size larger, in installation process, brought the inconvenience in assembling to operating personnel.

Contactor is a kind of switching device, and its Main Function is make-and-break contact, thereby controls the work of load on related circuit.Vacuum contactor closes a floodgate, the operation principle of separating brake is as follows: in the time giving the energising of contactor closing coil, produce electromagnetic force, by the armature of contactor to the adhesive of iron core direction, when armature with iron core adhesive on after, between armature, iron core and yoke, just formed a closed magnetic loop, "on" position is kept.In the time of contactor separating brake, disconnect the electricity of closing coil, in the time closing a floodgate, the tripping spring of compression will discharge elastic potential energy, make contactor separating brake.

utility model content:

Provide a kind of interlock for contactor for addressing the above problem the utility model, can realize mechanical interlocked between two contactors, strong, the simple in structure convenient operation personnel assembling of its suction-combining force.

The technical solution of the utility model is: a kind of interlock for contactor, described interlock comprises seesaw, support and elasticity holding member, described seesaw and the described support leverage that constitutes by an active connection, described elasticity holding member is set respectively between described seesaw two ends and described support, and described leverage makes seesaw keep poised state by the effect of described elasticity holding member in the situation that contactor does not move.

Described a kind of interlock for contactor, described interlock is installed between adjacent two contactors, the two ends of described seesaw are the clappers of close two contactors respectively, the clappers of described contactor are fixedly connected with the actuating mechanism of contactor, by the wherein actuating mechanism drive clappers action of a contactor, the described clappers seesaw one end of flapping, make the clappers of other end seesaw near another contactor, distance when now the distance between other end seesaw and the clappers of another contactor is less than contactor and does not close a floodgate between magnetic armature and magnetic core.Distance between this seesaw and clappers is preferably between 0.2mm-1mm.

The elastomeric element of described a kind of interlock for contactor is spring.

Described a kind of interlock for contactor, its seesaw is connected by pivot pin with described support.

Described a kind of interlock for contactor, the clappers of its contactor are fixedly connected with by axle with the magnetic armature of contactor.

Described a kind of interlock for contactor, its leverage is bascule mechanism.

Described a kind of interlock for contactor, it also comprises installing rack, and described support is fixed on installing rack, and described installing rack is near being fixed with respectively alignment pin on the side at described seesaw two.

Adopt technical scheme described in the utility model, when after contactor energising adhesive, while giving another contactor energising, this contactor can not close a floodgate or in gate-dividing state; But during simultaneously in gate-dividing state, give wherein any contactor energising at two contactors, can realize energising contactor is closed a floodgate; And its interlock mode of the interlock in its technical solutions of the utility model is Purely mechanical, there is no the auxiliary of electrical interlocks, strong, the simple in structure and convenient operation personnel assembling of its suction-combining force.Adopting this interlock can realize two contactors installs side by side, save installing space, can use original position of mounting hole on pedestal for JCZ5 series vacuum contactor especially installs, interlock for these two contactors after having debugged can be pulled down independent transport, behind destination, assemble again, after having assembled, need not debug again and can use, reduce to install and transport difficulty.

Brief description of the drawings

A kind of interlock vertical view for contactor of Fig. 1;

Fig. 2 interlock is at two contactors schematic diagram during all in gate-dividing state;

After Fig. 3 interlock is arranged on contactor, contactor is in gate-dividing state schematic diagram;

After Fig. 4 interlock is arranged on two contactors, a contactor in "on" position, another contacts in gate-dividing state figure;

The armature of contactor, iron core, axle, the associated schematic diagram of clappers in Fig. 5 the utility model embodiment;

Fig. 6 is arranged on the vertical view of the interlock on installing rack.

In figure, 1, seesaw 2, support 3, spring 4, installing rack 5, alignment pin 6, pivot pin 7, clappers 8, axle 9, armature 10, iron core.

Specific embodiment

Now in conjunction with accompanying drawing of the present utility model; technical scheme in the utility model embodiment is known intactly and described; obviously; described embodiment is only a part of embodiment of the present utility model; instead of whole embodiment, based on the embodiment in the utility model, those of ordinary skill in the art are not making under creative work prerequisite; the every other embodiment obtaining, belongs to protection range of the present utility model.

Embodiment mono-

The interlock for contactor shown in Fig. 1, described interlock comprises seesaw, support and spring, described seesaw and described support connect and compose bascule mechanism by pivot pin, between described seesaw two ends and described support, be respectively arranged with spring, described leverage makes seesaw keep poised state by the supporting function of spring in the situation that contactor does not move, described interlock is installed between adjacent two contactor a and b, the two ends of described seesaw are the clappers of close two contactors respectively, the clappers of described contactor and the magnetic armature of contactor are fixed together (being specifically fixed together by axle), when drive clappers action during as the magnetic armature adhesive magnetic core of contactor a by a contactor wherein, the described clappers seesaw one end of flapping, make the clappers of the seesaw other end near another contactor b, now the distance between other end seesaw and the clappers of another contactor b is approximately 0.5mm, in the time giving contactor b energising, contactor b adhesive (its attracting mode is the same with contactor a), the clappers of contactor b move after the distance of about 0.5mm with an end in contact of seesaw, because the operating distance of contactor b clappers is very short, the armature of contactor b is with also having larger gap between iron core, cause magnetic gap very large, its the suction-combining force is not too large, but contactor a is in "on" position, its magnetic armature is with almost there is no air gap between iron core, magnetic gap is very little, there is very large the suction-combining force, so in the time of contactor b adhesive, when the clappers of contactor b move one end of seesaw, seesaw can rotate by the pivot pin in the middle of it, in the time that seesaw rotates, the other end of seesaw applies a lever force with regard to the clappers of giving contactor a, because the clappers of contactor a and the magnetic armature of contactor a are fixed together, its power is just directly sent on the armature of contactor a, but, now the magnetic armature of contactor a and the suction-combining force of magnetic core are much larger than the magnetic armature of contactor b and the suction-combining force of magnetic core, so the clappers of contactor b can not drive by the lever action of seesaw the clappers of contactor a, now the armature of contactor a cannot separate with iron core, contactor b just cannot realize combined floodgate, when contactor a and b are during simultaneously in gate-dividing state, seesaw due to the spring action at two ends in poised state, the two ends of seesaw have enough distances that contactor is closed a floodgate with contactor clappers, so when contactor a and b are during simultaneously in gate-dividing state, any contactor can close a floodgate.

Embodiment bis-

Embodiment bis-and embodiment mono-are basic identical, the leverage that described seesaw and described support connect and compose by pivot pin is bascule mechanism, just on described interlock, also comprise installing rack, described support is fixed on installing rack, and described installing rack is near being fixed with respectively alignment pin on the side at described seesaw two ends.Adopt the interlock of implementing contactor described in two after Installation and Debugging complete, only interlock need to be taken off, interlock carries out corresponding one by one for a, two contactors of b, a, two contactors of b can one one transports separately, arrive behind destination according to same a, two contactors of b one to one interlock connect, by alignment pin insert in the hole fixing after, can use without debugging, reduced installation and transport difficulty.

Claims (8)

1. the interlock for contactor, it is characterized in that: described interlock comprises seesaw, support and elasticity holding member, described seesaw and the described support leverage that constitutes by an active connection, described elasticity holding member is set respectively between described seesaw two ends and described support, and described leverage makes seesaw keep poised state by the effect of described elasticity holding member in the situation that contactor does not move.

2. a kind of interlock for contactor as claimed in claim 1, it is characterized in that, described interlock is installed between adjacent two contactors, the two ends of described seesaw are the clappers of close two contactors respectively, the clappers of described contactor are fixedly connected with the actuating mechanism of contactor, by the wherein actuating mechanism drive clappers action of a contactor, the described clappers seesaw one end of flapping, make the clappers of other end seesaw near another contactor, distance when now the distance between other end seesaw and the clappers of another contactor is less than contactor and does not close a floodgate between magnetic armature and magnetic core.

3. a kind of interlock for contactor as claimed in claim 2, is characterized in that, the described seesaw other end is near the clappers of another contactor, and now the distance between this seesaw and clappers is between 0.2mm-1mm.

4. a kind of interlock for contactor as claimed in claim 1, is characterized in that, described elastomeric element is spring.

5. a kind of interlock for contactor as claimed in claim 1, is characterized in that, described seesaw is connected by pivot pin with described support.

6. a kind of interlock for contactor as claimed in claim 2, is characterized in that, the clappers of described contactor are fixedly connected with by axle with the magnetic armature of contactor.

7. a kind of interlock for contactor as described in claim 1 to 6 any one, is characterized in that, described leverage is bascule mechanism.

8. a kind of interlock for contactor as claimed in claim 7, is characterized in that, also comprise installing rack, described support is fixed on installing rack, and described installing rack is near being fixed with respectively alignment pin on the side at described seesaw two.