Permanent magnetism keeps electromagnetic operating mechanism external manual switching-off device
Technical field
A kind of electrician's electric field that belongs to is that a kind of permanent magnetism keeps electromagnetic operating mechanism external manual switching-off device.
Background technology
The built-in switching-off device of existing a kind of permanent magnet mechanism can not carry out under the situation of separating brake when the circuit appearance, and the operator uses dedicated handle, inserts the cabinet aperture of door, aims at apart from the overhanging hexagonal swing handle of the branch brake cam more than the cabinet door 200mm, carries out manual brake separating.Though this built-in switching-off device has had the manual brake separating function, but exist inconvenience, dumb defective efficiently, the situation that dead electricity does not have illumination takes place in case behaviour makes ring Base-on-environment, add The matter is urgent, operating personnel are nervous, be difficult to aim at separating brake hexagonal swing handle, certainly will cause incuring loss through delay opening time, cause because of timely separating brake generation accident with the accident that has taken place is magnified.
Summary of the invention
The purpose of this utility model is, overcomes the shortcoming of prior art, provides a kind of easy to operate, convenient to use, only needs the swing handle on the rotary switc cabinet door can realize that the permanent magnetism of separating brake keeps electromagnetic operating mechanism external manual switching-off device.
For realizing that the technical scheme that the purpose of this utility model adopted is: a kind of permanent magnetism keeps electromagnetic operating mechanism external manual switching-off device, it comprises the upper bracket 1 that framework 3 is fixed, it is characterized in that, be provided with connecting lever 4, the fixing separating brake line shaft 2 in connecting lever 4 rear ends is articulated in the lower end of upper bracket 1, and the hinged guide wheel 5 of connecting lever 4 front ends contacts with eccentric wheel 6; Be fixed with major axis block set 19 on framework 3, be built-in with major axis cover 20 in major axis block set 19, major axis 21 is loaded in the major axis cover 20 and with major axis cover 20 and is connected, and eccentric wheel 6 is fixing with major axis cover 20, and the front end of major axis 21 is fixed with contact 7; Swing handle cover 12 is set on cabinet door 15, in swing handle cover 12 swing handle 10 is housed, the head of swing handle 10 is connected with yoke 11, and the front end of yoke 11 is fixed with permanent magnet 17, and permanent magnet 17 is connected with contact 7 magnetic, and the shift fork 9 that is provided with on yoke 11 matches with contact 7.
The back-moving spring 18 of switching-off device is set on described major axis cover 20, and an end of back-moving spring 18 and major axis block set 19 are fixing, and an end of back-moving spring 18 and eccentric wheel 6 are fixing.
Be provided with the swing handle locking mechanism, the structure of described swing handle locking mechanism is that the ratchet 8 that is provided with on cabinet door 15 matches with the location hole 13 of swing handle 10.
Be provided with the adhesive indicating device, the structure of described adhesive indicating device is, is built-in with central shaft 22 at swing handle 10, is nested with spring 16 on central shaft 22.
Permanent magnetism of the present utility model keeps electromagnetic operating mechanism external manual switching-off device can make yoke, permanent magnet and contact form closed magnetic circuit and the structure that connects as one, when needs carry out urgent separating brake, only need stir ratchet and remove constraint swing handle, the turn swing handle is by rotating counterclockwise, making swing handle drive major axis, major axis cover and eccentric wheel rotates together, eccentric wheel makes connecting lever jack-up and makes separating brake line shaft output torque, and the existing mechanism that links with the separating brake line shaft finishes sub-switching operation.It is easy to have sub-switching operation, convenient to use, advantages such as security reliability.
Description of drawings
Fig. 1 looks schematic diagram (for holding state) for permanent magnetism keeps electromagnetic operating mechanism external manual switching-off device structure master.
Fig. 2 looks schematic diagram (for door opening state) for permanent magnetism keeps electromagnetic operating mechanism external manual switching-off device structure master.
Among the figure: 1 upper bracket, 2 separating brake line shafts, 3 frameworks, 4 connecting levers, 5 guide wheels, 6 eccentric wheels, 7 contacts, 8 ratchets, 9 shift forks, 10 swing handles, 11 yokes, 12 swing handle covers, 13 location holes, 14 yoke sheaths, 15 cabinet doors, 16 springs, 17 permanent magnets, 18 back-moving springs, 19 major axis block sets, 20 major axis covers, 21 major axis, 22 central shafts, 23 cabinets, 24 power screws, 25 nuts.
Embodiment
The utility model is described in further detail to utilize embodiment shown in the drawings below.
With reference to Fig. 1, permanent magnetism keeps electromagnetic operating mechanism external manual switching-off device to have framework 3, is fixed with upper bracket 1 at framework 3, is provided with connecting lever 4, the fixing separating brake line shaft 2 in connecting lever 4 rear ends is articulated in the lower end of upper bracket 1, and the hinged guide wheel 5 of connecting lever 4 front ends contacts with eccentric wheel 6.On framework 3, be fixed with major axis block set 19, be built-in with major axis cover 20 in major axis block set 19, major axis 21 is loaded in the major axis cover 20 and with major axis cover 20 and is connected, major axis cover 20 can rotate with major axis 21, major axis 21 moves axially relatively again, eccentric wheel 6 is fixing with major axis cover 20, and the front end of major axis 21 is fixed with contact 7.Swing handle cover 12 is set on cabinet door 15, in swing handle cover 12, swing handle 10 is housed.The head of swing handle 10 is connected with yoke 11, and yoke 11 is fixing with yoke sheath 14, and the front end of yoke 11 is fixed with permanent magnet 17, and permanent magnet 17 is connected with contact 7 magnetic, and the shift fork 9 that is provided with on yoke 11 matches with contact 7.The back-moving spring 18 of switching-off device is set on described major axis cover 20, and an end of back-moving spring 18 and major axis block set 19 are fixing, and an end of back-moving spring 18 and eccentric wheel 6 are fixing.Be provided with the swing handle locking mechanism, the structure of described 10 swing handle locking mechanisms is that the ratchet 8 that is provided with on cabinet door 15 matches with the location hole 13 of swing handle 10.Be provided with the adhesive indicating device, the structure of described adhesive indicating device is that swing handle 10 is built-in with central shaft 22, is equipped with spring 16 on central shaft 22.When permanent magnet 17 was connected with contact 7 magnetic, central shaft 22 stretched out to swing handle 10 1 ends, thus the indication permanent magnet 17 with contact 7 adhesives.Central shaft 22 returns under the effect of spring 16 and in the retraction swing handle 10.Fig. 1 is a holding state, cabinet door 15 has closed on cabinet 23 at this moment, and rotational power screw rod 24 drives nut 25 displacements fixing on the cabinet 23, make cabinet 23 together with major axis cover 20, eccentric wheel 6 moves axially along major axis 21 and arrives desired location, when needs carry out urgent separating brake, only need stir ratchet 8 and remove constraint swing handle 10, turn swing handle 10 is by rotating counterclockwise, make swing handle 10 drive major axis 21, major axis cover 20 and eccentric wheel 6 rotate together, eccentric wheel 6 makes connecting lever 4 jack-up and makes the 2 output torques of separating brake line shaft, and the existing mechanism that links with the separating brake line shaft finishes sub-switching operation.
With reference to Fig. 2, Fig. 2 is a door opening state, and at this moment, permanent magnetism keeps the magnet 17 and contact 7 separated attitudes of electromagnetic operating mechanism external manual switching-off device.