CN2417562Y

CN2417562Y - Electric device for turning-on switch for circuit-breaker

Info

Publication number: CN2417562Y
Application number: CN 00208566
Authority: CN
Inventors: 钟方强; 李乾伟
Original assignee: QIANLONG ELECTRIC APPLIANCE Co Ltd LIN-AN HONGZHOU
Current assignee: QIANLONG ELECTRIC APPLIANCE Co Ltd LIN-AN HONGZHOU
Priority date: 2000-04-20
Filing date: 2000-04-20
Publication date: 2001-01-31
Anticipated expiration: 2010-04-20

Abstract

The utility model relates to an electric device for a turning-on switch for a circuit-breaker, which is composed of an electric control circuit and a mechanical operating mechanism. A motor is connected with a screw rod; a slide block is sheathed on the screw rod; the screw of the slide block is matched with the screw of the screw rod; the slide block is connected with a handle of a knife switch; the motor and the screw rod are fixed on a supporting frame; an upper and a lower limiting switches are fixedon the slide block or the contacting positionof both ends of the knife switch travel. The utility model can be matched with breakers with various powers; the utility model has the advantages of wind ranges of application and low producing and selling costs; the utility model is a new electromechanical integral electric device for turning-on switch.

Description

Electric switch-on device of breaker

The utility model relates to a kind of electric switch of automatic closing, especially is fit to and power distribution equipment, the supporting use of emergency protective device.

At present the automatic closing device of using on the line mainly contains two kinds: a kind ofly replace electric current of make-and-break for magnetic-type by the electromagnet that is placed in two ends, do not have magnetic force when producing magnetic force and taking off magnetic when magnetization, plug-in strip placed in the middle is resetted and close a floodgate; Another kind is the garden disc type, uses eccentric wheel and bent axle principle, and the garden dish circles, and then spurs male contact handle in the flexible process of connecting rod one and finishes and reset and feed motion.These two kinds of electric switch-on devices have their own characteristics each, but electromagnetic type only be suitable for being applied in circuit breaker below 100 amperes, otherwise the worry of underpower is arranged.Garden tray type structure relative complex, production cost is higher.

The purpose of this utility model is to overcome the above-mentioned deficiency of prior art and designs a kind of being widely used on the high-power or little circuit breaker, the screw mandrel formula electric switch-on device that cost is low.

Above-mentioned purpose can be finished by following measure: it is made up of electric control circuit and the mechanical handling two large divisions of mechanism, motor connects screw mandrel, be with slide block on the screw mandrel, the external screw thread of screw mandrel matches with the internal thread of slide block, slide block links to each other with the handle of plug-in strip, motor and screw mandrel are fixed on the support, and the bound bit switch is fixed on the position that touches easily at slide block or plug-in strip stroke two ends.

The bound bit switch is selected travel switch for use.

Fig. 1 is the utility model structural representation (solid) figure.

Fig. 2 is electrically connected block diagram for the utility model.

Fig. 3 is electric control circuit figure.

Below, the utility model will be described in detail in conjunction with the accompanying drawings:

Whole device is made up of electric control circuit and mechanical handling mechanism, because of motor 2 can be a direct current machine, also can be the alternating current machine of forward and reverse rotation; Power supply can be positive and negative power supply, also can switch with relay, so electric control circuit should design by concrete condition, the accompanying drawing 3 in the application's material be illustrative provided a kind of circuit diagram of electrical control.

Mechanical part, motor 2 connects screw mandrel 6, the also available mechanical reduction gear in centre, there is bearing screw mandrel 6 ends, are with slide block 5 on the screw mandrel, the screw-internal thread fit of the external screw thread of screw mandrel 6 and slide block 5, slide block 5 links to each other with the handle of plug-in strip (not marking plug-in strip and handle thereof among Fig. 1), and motor 2 and screw mandrel 6 are fixed on the support 1, and upper and lower limit bit switch 3 and 4 is fixed on touching place at slide block 5 or plug-in strip stroke two ends, limit switch can be used travel switch, optoelectronic switch etc., and the application selects travel switch for use.Though wheel and rack cooperates, or worm gear cooperates also with tooth bar and can realize the purpose of closing a floodgate, with this screw mandrel cooperate with slide block preferably.

From being electrically connected the block diagram as seen of accompanying drawing 2, electric control circuit B is behind the reclosing command of receiving signal input part XH input, reverse pumping goes out the reverse rotation power supply to motor 2, motor 2 drives screw mandrel 6 backward rotation, make and be enclosed within on the screw mandrel 6 and male contact handle that slide block that screw thread is worked in coordination 5 drives circuit breaker A moves to the direction that resets, carry out reset operation, when slide block 5 or plug-in strip move to touching lower position switch 4, latter's output resets and finishes signal, and this signal is defeated by electric control circuit B, make B output be rotated in the forward power supply and give motor 2, motor 2 just drives screw mandrel 6 commutation rotations, slide block and coupled plug-in strip also move to opposite (combined floodgate) direction, until combined floodgate, upper limit position switch 3 by slide block 5 or plug-in strip touching, was exported combined floodgate to electric control circuit B and was finished signal again this moment, B just instructs and is rotated in the forward power supply and stops power supply to motor 2, whole closing operation EP (end of program).

It should be noted that the mechanical electric element of " lock " in the application material, " plug-in strip " general reference identical function.

Circuit breaker is of a great variety, and watt level differs, so this electric switch-on device, can be developed into series of products.If residual current action breaker on the three-phase and four-line circuit, then support 1 can be made the rectangle frame with the engineering plastics pressing mold, and screw mandrel 6 makes with slide block 5 of 45# steel, standard thread, screw mandrel 6 long 98mm, φ 8mm, the travel switch model can be used 831360W2, and motor 2 can be used the 6W direct current machine.

The utility model can be widely used in the breaker that power does not wait, have simple in structure, Advantage with low cost.

Claims

1. electric switch-on device of breaker, form by electric control circuit and the two large divisions of mechanism operating mechanism, it is characterized in that motor (2) connects screw mandrel (6), be with slide block (5) on the screw mandrel (6), the screw-internal thread fit of the external screw thread of screw mandrel (6) and slide block (5), slide block (5) links to each other with the handle of plug-in strip, and motor (2) and screw mandrel (6) are fixed on the support (1), and bound bit switch (3,4) is fixed on touching place of slide block (5) or plug-in strip stroke two ends terminal point.

2. closing device as claimed in claim 1 is characterized in that said bound bit switch (3,4), is travel switch.