CN201812767U

CN201812767U - Rack type dual purpose closing device of residual current circuit breaker with buried motor

Info

Publication number: CN201812767U
Application number: CN2010205534835U
Authority: CN
Inventors: 钟方强; 董勇; 陶欢
Original assignee: HANGZHOU QIANLONG ELECTRIC CO Ltd
Current assignee: HANGZHOU QIANLONG ELECTRIC CO Ltd
Priority date: 2010-10-09
Filing date: 2010-10-09
Publication date: 2011-04-27
Anticipated expiration: 2020-10-09

Abstract

The utility model discloses a rack type dual purpose closing device of a residual current circuit breaker with a buried motor, which comprises a motor control circuit and a mechanical operating mechanism. The projecting shaft of a motor (1) is connected with a gear (4). The gear (4) is meshed with a rack (6). One end of the rack (6) is connected with a handle (8) of the circuit breaker through a connecting piece (7). The projecting shaft of the motor (1) is upward. A lower clamping plate (2), a fixing plate (3), the gear (4) and an upper clamping plate (5) are sheathed on the projecting shaft orderly from down to up. The gear (4) and the rack (6) are arranged on the same plane. A clutch is arranged at the side of the fixing plate (3). The rack type dual purpose closing device is exclusively used as an electric drive and manual dual purpose reclosing device of the residual current circuit breaker. Compared with the prior art, the utility model has the advantages that the rack type dual purpose closing device reduces the height of the whole residual current circuit breaker, can be installed in existing widely used distribution boxes, and is easy to generalize; the motor has comparatively stable push-pull force to the handle; wild grains are not easy to generate during direction changing; and the action is correct.

Description

The Leakage Circuit Breaker Dual-Use Switch Rack Device that buries under the motor

Technical field

It is can be electronic in the residual current circuit breaker or the device of hand-reset and combined floodgate that the utility model relates to a kind of low voltage electric network emergency protective device.

Background technology

CN2580592Y has announced " the dual-purpose combined floodgate of residual current circuit breaker rack-and-pinion is put " patented technology, through use after a while, realizes to have two kinds of defectives; The one, the permanent magnet claw pole of selecting for use can just reverse the one-way communication motor, just changeing automatically when reversing to the dead point, and the power instability, the commutation line disorderly can not be entirely truely by the design commutation, and influence is correctly carried out and the multiple reclosing in position; The 2nd, whole motor be installed in the residual current circuit breaker middle cover above, cover above it again with loam cake, make the height of whole residual current circuit breaker shell higher, increased the cost of material of shell, have highly near the distribution box degree of depth, the worry of not entering will be put, improve the big-and-middle-sized residual current circuit breaker of rated operational current to 600A, 800A, 1200A, if motor also adopts the mode that is contained in above the middle cover, then residual current circuit breaker can't be installed with existing distribution box coupling, need use darker distribution box instead, increases customer investment, apply difficulty, must be improved.

The utility model content

At the practical problem that " Leakage Circuit Breaker Dual-Use Switch Rack Device " patented technology is run in application, the technical problems to be solved in the utility model is that the commutation of designing a kind of motor is the Leakage Circuit Breaker Dual-Use Switch Rack Device that buries under the modified model motor that carries out as required, the residual current circuit breaker whole height decreases.

The technical scheme that solves the problems of the technologies described above employing is: the Leakage Circuit Breaker Dual-Use Switch Rack Device that buries under this motor, comprise circuit for controlling motor and mechanical handling mechanism two parts, motor projecting shaft connection gear, the wheel and rack engagement, tooth bar one end is connected with the handle of circuit breaker by connector, the projecting shaft of motor up, this projecting shaft is set with lower plate, fixed head, gear and train wheel bridge from the bottom to top successively, wheel and rack is in same plane, and there is clutch on fixed head side side.

Said clutch is to make motor fixing plate make the eccentric wheel of fan-shaped displacement and the eccentric knob of knob combination.

On the connector between said tooth bar and the handle spring is installed.

The beneficial effects of the utility model are can just be reversed after the one-way communication motor changes unidirectional reversible electric machine into by permanent magnet claw pole, and for by the instruction commutation, the power of rotation is stable by automatic reverse in the commutation of motor, commutate line disorderly, and it is correct with feed motion to reset.Bury the circular hole that motor is used down because of covering under motor to have again, the big subordinate of motor is embedded under the middle cover, reduce cover loam cake height thereon, thereby reduced the height of whole residual current circuit breaker, can be installed in the distribution box of present extensive use, do not need new establishing electronic box, reduced the spending that the user establishes new case, be easy to promote and use.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is installed in state diagram above the residual current circuit breaker middle cover for the utility model.

Embodiment

The utility model is described in detail below in conjunction with embodiment and with reference to accompanying drawing: whole device is made up of circuit for controlling motor and the mechanical handling two large divisions of mechanism, its circuit for controlling motor part is the same with disclosed CN00208566 patent, the basic structure of the wheel and rack combination of its mechanical handling mechanism is also roughly the same, does not carefully state.The application's innovative point has 3 points: the one, use unidirectional reversible electric machine instead, the 2nd, mechanical handling mechanism changes into and is installed in motor top by being installed in motor 1 below, the 3rd, the middle cover 9 under the motor 1 has down the circular hole that buries motor, reduces the motor setting height(from bottom) so that the height of whole residual current circuit breaker reduces.Fig. 1 and Fig. 2 have shown the basic structure of this device, and driven gear 4 rotations drove tooth bar then and make stretching motion when motor 1 rotated, and just can affect handle 8 do to reset action with reclosing, and the spring of installing on the connector 7 plays the cushioning effect of power.

Gear 4 can mesh by disturbing mutually as required with tooth bar 6, and is separated from each other and break away from, and an end of tooth bar 6 passes through connector 7 and links to each other with handle 8, and this connection is the flexible connection that can revolve, in order to handle 8 along the arching trajectory activity.Gear 4 is to rely on clutch to realize with the engagement as required of tooth bar 6, this need the spacing of adjusting gear 4 and tooth bar 6 can reach from the purpose of closing.The method of regulating distance between the two is a lot, but the position of stationary rack 6, carrier wheel 4 comes spacing, the method that available spring pushes away, draws, and also available cam rotation promotes the method for displacement etc.Now with stationary rack 6, the method of shifted gear 4 is that example illustrates: be fixed at the motor 1 that gear 4 is installed on the projecting shaft on the fixed head 3 of motor, one end of this fixed head 3 has rotating shaft, the tooth bar 6 that the centre has chute is in same plane with gear 4, by clamping plate 2,5 and fixed head 3 be fixed on the casing, motor fixing plate 3 has short slot with respect to the other end of rotating shaft, eccentric knob as clutch just passes through this short slot, be installed on the clamping plate, rotate eccentric knob, when this off-centre knob protuberance withstands the short slot outer side edges, motor fixing plate 3 is together with the motor 1 and gear 4 fixed on it, because of the effect of an end rotating shaft, do fan-shaped displacement, gear 4 and tooth bar 6 are left and break away from engagement; When counter-rotation off-centre knob, this off-centre knob protuberance withstands the short slot inner side edge, and motor mounting plate 3 is resetted together with motor on it 1 and gear 4, and gear 4 meshes again with tooth bar 6.If eccentric knob is installed in the tooth bar chute, movable tooth bar, the method for fixed gear is regulated distance between the two, can realize above-mentioned purpose equally, no longer carefully states.

Under the normal condition, gear 4 is in engagement with tooth bar 6, the residual current circuit breaker tripping operation, the circuit for controlling motor instruction automatically resets and closes a floodgate, if after the residual current circuit breaker tripping operation, chance encounter has a power failure or plant failure, then only need eccentric knob is outwards twisted, its protuberance is pushed up toward outer side edges, and gear 4 breaks away from tooth bar 6, just can directly pull handle 8 with hand and reset and combined floodgate.Engagement just enters normal condition again once again.

During actual fabrication, handle 8 should extend, and directly stretches out outside casing upper cover and (does not put on lid among the figure).Eccentric knob can turn with bottle opener.

The utility model just often can electric switch-on after residual current circuit breaker tripping operation, and chance encounter has a power failure or during abnormal conditions such as plant failure, but closing by hand.

Claims

1. the Leakage Circuit Breaker Dual-Use Switch Rack Device that buries under the motor, comprise circuit for controlling motor and mechanical handling mechanism two parts, motor (1) projecting shaft connection gear (4), gear (4) and tooth bar (6) engagement, tooth bar (6) one ends are connected with the handle (8) of circuit breaker by connector (7), the projecting shaft that it is characterized in that motor (1) up, this projecting shaft is set with lower plate (2), fixed head (3), gear (4) and train wheel bridge (5) from the bottom to top successively, gear (4) is in same plane with tooth bar (6), and there is clutch on fixed head (3) side side.

2. the Leakage Circuit Breaker Dual-Use Switch Rack Device that buries under the motor as claimed in claim 1 is characterized in that said clutch is to make motor fixing plate (3) make the eccentric wheel of fan-shaped displacement and the eccentric knob of knob combination.

3. the Leakage Circuit Breaker Dual-Use Switch Rack Device that buries under the motor as claimed in claim 1 is characterized in that on the connector (7) between said tooth bar (6) and the handle (8) spring being installed.