CN201402757Y

CN201402757Y - Closing and locking device of breaker

Info

Publication number: CN201402757Y
Application number: CN2009200389673U
Authority: CN
Inventors: 杨俊�; 管瑞良; 倪金松; 朱佳梦; 张福民
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2009-04-30
Filing date: 2009-04-30
Publication date: 2010-02-10
Anticipated expiration: 2019-04-30

Abstract

The utility model discloses a closing and locking device of breaker, which belongs to technical field of attachment added to a vacuum circuit breaker. The closing and locking device of breaker comprises a shell body, an electromagnet with a moving iron core, and a lock plate; the shell body is arranged at a cover plate of a breaker operating mechanism; the electromagnet is fixed in the shell bodyfor connecting the power source; the moving iron core of the electromagnet is arranged in a shell cavity of the electromagnet in a way of moving up-and-down, the end part of the moving iron core stretches out of the shell body of the electromagnet; one end of the lock plate is fixed at the end part of the moving iron core, and the other end of the lock plate bends downwards to form a lock hook formatching with a closing button of the breaker. The advantages of the closing and locking device of breaker are that: the closing and locking device of breaker can effectively prevent that the manualclosing operation conducted by the medium voltage vacuum circuit breaker in the circumstances that the control loop obtains no electricity, in order to increase the safety performance of the medium voltage vacuum circuit breaker.

Description

A kind of closing locking device of circuit breaker

Technical field

The utility model relates to a kind of closing locking device of circuit breaker, presses on the cover plate of vacuum circuit breaker operating mechanism in being installed in, and is used for cooperating with the switch knob of circuit breaker, belongs to the attachment technique field of setting up on middle pressure vacuum circuit-breaker.

Background technology

Known, middle pressure vacuum circuit-breaker inside has control loop, and this control loop comprises combined floodgate electric loop and separating brake electric loop, is used for controlling closing/separating brake of pressure vacuum circuit-breaker itself.This control loop, only under the electric situation, just be achieved circuit breaker closed/control that separating brake moves, and control loop not under the electric situation, by the switch knob of manual operation circuit breaker, can realize feed motion equally to circuit breaker.In case closing by hand when central pressure vacuum circuit-breaker place circuit breaks down, because do not have the protection of control loop this moment, also just can't be protected the load in the circuit, thereby have potential safety hazard, may cause serious accident.

Summary of the invention

At above-mentioned existing problems, the purpose of this utility model be to provide press in a kind of can the preventing vacuum circuit-breaker control loop not carry out the closing locking device of the circuit breaker that artificial closing by hand operates under the electric situation.

The purpose of this utility model reaches like this, and a kind of closing locking device of circuit breaker comprises housing 1, has the electromagnet 2 and the locking board 6 of moving iron core 4, and described housing 1 is installed on the cover plate 8 of circuit breaker operation mechanism; Described electromagnet 2 is fixed in the housing 1, is used for being connected with power supply; The moving iron core 4 of described electromagnet 2 is arranged in the shell chamber of electromagnet 2 up and downly, and the end of moving iron core 4 leans out outside the housing of electromagnet 2; One end of described locking board 6 is fixed on the end of described moving iron core 4, and the other end of locking board 6 bending downwards and being formed with is used for the lock hook 61 that matches with the switch knob 7 of circuit breaker.

In an embodiment of the present utility model, the bottom of described housing 1 is equipped with a guide 5, is used for the gathering sill 51 that passes for the lock hook 61 on the described locking board 6 offering on the guide 5.

In another embodiment of the present utility model, the bottom of described housing 1 has extended a guide 5 integratedly, is used for the gathering sill 51 that passes for the lock hook 61 on the described locking board 6 offering on the guide 5.

Go back among the embodiment of the present utility model, a sensitive switch 3 also is installed on the described electromagnet 2, the touch pole 31 on the sensitive switch 3 is positioned at the top of described locking board 6.

In another embodiment of the present utility model, one end of described electromagnet 2, an end of the making electromagnet 10 in the combined floodgate electric loop are connected with an end of power supply respectively, one end of the normally opened contact of the other end of described electromagnet 2, sensitive switch 3 is connected with the other end of power supply, and the other end of the normally opened contact of sensitive switch 3 is connected with the other end of making electromagnet 10.

The utility model is because after adopting said structure, the beneficial effect that has: press in effectively preventing vacuum circuit-breaker control loop not carry out artificial closing by hand under the electric situation and operate, to put forward the security performance of high pressure vacuum circuit-breaker.

Description of drawings

Fig. 1 is an example structure sketch of the present utility model.

Fig. 2 be installed in for the utility model on the cover plate 8 of circuit breaker operation mechanism and electromagnet 2 not the application examples structural representation under the electric situation.

Fig. 3 is the A portion enlarged drawing among Fig. 2.

Fig. 4 be installed in for the utility model on the cover plate 8 of circuit breaker operation mechanism and electromagnet 2 the application examples structural representation under the electric situation.

Fig. 5 is the schematic diagram that is electrically connected of the normally opened contact of the making electromagnet 10 on electromagnet of the present utility model 2 and the combined floodgate electric loop, sensitive switch 3 and power supply.

Among the figure: 1. housing; 2. electromagnet; 3. sensitive switch, 31. touch poles; 4. moving iron core; 5. guide, 51. gathering sills; 6. locking board, 61. lock hooks; 7. switch knob; 8. cover plate, 81. through holes; 9. fixture; 10. making electromagnet.

Embodiment

For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present utility model and beneficial effect more, the applicant general elaborates in conjunction with the accompanying drawings in the mode of embodiment below, but to the description of embodiment all is not restriction to the utility model scheme, any according to the utility model design done only for pro forma but not substantial equivalent transformation all should be considered as the technical solution of the utility model category.

See also Fig. 1 and in conjunction with Fig. 2, Fig. 3 and Fig. 5, a kind of closing locking device of circuit breaker, comprise housing 1, have electromagnet 2, sensitive switch 3, guide 5 and the locking board 6 of moving iron core 4, described electromagnet 2, is used for being connected with power supply by screw in housing 1; The moving iron core 4 of described electromagnet 2 is arranged in the shell chamber of electromagnet 2 up and downly, and the end of moving iron core 4 (being illustrated as the end, lower end of moving iron core 4 among the figure) leans out outside described electromagnet 2 housings; One end of described locking board 6 is by the lower end end of screw at described moving iron core 4, the other end of locking board 6 bending downwards and be formed with lock hook 61; Described guide 5 is installed in the bottom of housing 1, both can assemble again behind the split production between guide 5 and the housing 1, also can form by integral production, be used for the gathering sill 51 that play the guiding role for the mat that the lock hook 61 on the described locking board 6 passes offering on the guide 5, gathering sill 51 both can be the open slot of band gap, also can be the hole; Described sensitive switch 3 by screw on electromagnet 2, touch pole 31 on the sensitive switch 3 corresponding with the position of described locking board 6 and be positioned at locking board 6 directly over, be used for cooperating with locking board 6, simultaneously, the normally opened contact of sensitive switch 3 inserts in the combined floodgate electric loop, concrete being electrically connected is an end of electromagnet 2, one end of the making electromagnet 10 in the combined floodgate electric loop is connected with an end of power supply respectively, the other end of electromagnet 2, one end of the normally opened contact of sensitive switch 3 is connected with the other end of power supply, and the other end of the normally opened contact of sensitive switch 3 is connected (seeing Fig. 5 for details) with the other end of making electromagnet 10.The closing locking device of being made up of above-mentioned housing 1, the electromagnet 2 with moving iron core 4, sensitive switch 3, guide 5 and locking board 6 is positioned on the cover plate 8 of circuit breaker operation mechanism, and the lock hook 61 on the locking board 6 is probeed in the through hole 81 of cover plate 8, match with the switch knob 7 of circuit breaker, housing 1 is fixed on the cover plate 8 of circuit breaker operation mechanism by fixture 9.

Please continue to consult Fig. 1 and in conjunction with Fig. 2, Fig. 3 and Fig. 5: when control loop not under the electric situation, be electromagnet 2 no powers, do not have the suction-combining force between electromagnet 2 and the moving iron core 4 this moment, moving iron core 4 is positioned at the relatively low position of electromagnet 2, sensitive switch 3 and locking board 6 be (as shown in Figure 1) in a state of nature, lock hook 61 on the locking board 6 probes in the through hole 81 of cover plate 8 and the switch knob 7 of circuit breaker is blocked, the position that switch knob 7 can't be reached make circuit breaker operation mechanism to close a floodgate, thus can guarantee circuit breaker control loop not can not closing by hand under the electric situation.Simultaneously, because the normally opened contact of sensitive switch 3 is in open mode, making electromagnet 10 akinesias in the combined floodgate electric loop can not make the electronic combined floodgate of circuit breaker.

See also Fig. 1, Fig. 4 and Fig. 5: when control loop is getting under the electric situation, be electromagnet 2 energisings, the moving iron core 4 of electromagnet 2 adhesives this moment, driving locking board 6 by moving iron core 4 moves upward, lock hook 61 on the locking board 6 is moved up, break away from and the cooperating of switch knob 7, at this moment, can realize feed motion by manually pressing switch knob 7 to circuit breaker.Simultaneously, the moving upward of locking board 6 actuate with the corresponding sensitive switch 3 in locking board 6 positions on touch pole 31, make sensitive switch 3 actions, its normally opened contact closure, the combined floodgate electric loop is switched on, and can realize electric combined floodgate to circuit breaker.

Here need to prove: the utility model also can omit sensitive switch 3, has not so just had electrical interlock, has only constituted the closing locking device of the utility model circuit breaker by mechanical interlocking.

Claims

1, a kind of closing locking device of circuit breaker is characterized in that comprising housing (1), has the electromagnet (2) and the locking board (6) of moving iron core (4), and described housing (1) is installed on the cover plate (8) of circuit breaker operation mechanism; Described electromagnet (2) is fixed in the housing (1), is used for being connected with power supply; The moving iron core (4) of described electromagnet (2) is arranged in the shell chamber of electromagnet (2) up and downly, and the end of moving iron core (4) leans out outside the housing of electromagnet (2); One end of described locking board (6) is fixed on the end of described moving iron core (4), and the other end of locking board (6) bending downwards and being formed with is used for the lock hook (61) that matches with the switch knob (7) of circuit breaker.

2, the closing locking device of a kind of circuit breaker according to claim 1, the bottom that it is characterized in that described housing (1) is equipped with a guide (5), is used for the gathering sill (51) that passes for the lock hook (61) on described locking board (6) offering on the guide (5).

3, the closing locking device of a kind of circuit breaker according to claim 1, the bottom that it is characterized in that described housing (1) has extended a guide (5) integratedly, is used for the gathering sill (51) that passes for the lock hook (61) on described locking board (6) offering on the guide (5).

4, the closing locking device of a kind of circuit breaker according to claim 1 is characterized in that a sensitive switch (3) also is installed on the described electromagnet (2), and the touch pole (31) on the sensitive switch (3) is positioned at the top of described locking board (6).

5, according to the closing locking device of claim 1 or 4 described a kind of circuit breakers, an end that it is characterized in that an end of described electromagnet (2), the making electromagnet (10) in the combined floodgate electric loop is connected with an end of power supply respectively, one end of the normally opened contact of the other end of described electromagnet (2), sensitive switch (3) is connected with the other end of power supply, and the other end of the normally opened contact of sensitive switch (3) is connected with the other end of making electromagnet (10).