CN202454450U - Crankshaft type electromagnetic switch mechanism - Google Patents

Abstract

A crankshaft type electromagnetic switch mechanism comprises a moving contact support, a moving iron core, an iron core, a rectifier bridge, a spring, a capacitor, a skeleton, a coil, wherein the moving contact support is arranged on the moving iron core, the coil is wound in the skeleton, the rectifier bridge and the capacitor are arranged on the skeleton, the skeleton is arranged in the middle part of the iron core, two leading-out wires of the coil are connected on the DC output end of the rectifier bridge, a positioning rod is arranged on the moving iron core, the positioning rod is connected with one end of a connecting rod, the middle and upper part of the iron core is connected with one end of a crankshaft, the other end of the crankshaft is connected with the other end of the connecting rod, and an included angle of a center line of axle holes of the two ends of the connecting rod and a center line of two axle holes of the crankshaft can be determined through adjusting the radius of the crankshaft or the center distance of the axle holes of the two ends of the connecting rod. The mechanism is simple in structure, small in volume, low in costs, high in reliability and small in maintaining current when closing, and is noise-free when working.

Description

Crank type electromagnetic switch mechanism

Technical field

The utility model relates to a kind of electromagnetic switch mechanism, is mainly used in circuit breaker and contactor in the high and low pressure electric equipment.

Background technology

For a long time; Hundreds of millions of transmission lines and power consumption equipment all adopt electromagnetic switch to carry out separating brake and combined floodgate, and electromagnetic switch mechanism has following several kinds approximately: holding power was big when (1) traditional electro-magnet switch mechanism worked, and noise is big; Coil and iron core are overheated easily during frequent operation; During combined floodgate, moving contact swing gap is big, and the main contact wearing and tearing are big; Holding power was little when (2) the permanent-magnet electromagnetic switching mechanism was worked, and noise is little, but operational environment is had certain requirement, complex structure, and cost is high, and it is poor that electromagnetism is run property concurrently; No current in closing coil when (3) the hung and buckled electromagnetic switch of shell fragment mechanism works, but the same consumed power of sub-gate circuit relay, sub-gate circuit structure and wiring are all complicated; (4) motor switching-on mechanism volume is big, and cost is high, and the starting current of motor is big during combined floodgate, and decompression separating brake electromagnetic mechanism is complicated, and the decompression coil need rely on electric power to keep equally; (5) spring energy-storage electromagnetic switch mechanism volume is big, complex structure, and cost is high, can not realize multiple shot reclosing control; (6) adopt electromagnetic switch electricity-saving appliance and traditional electro-magnet switch mechanism to merge and use, can reduce energy consumption to a certain extent, but the electricity-saving appliance cost is high, tie lines is complicated, in engineering, seldom adopts.Therefore the electromagnetic switch mechanism that adopts both at home and abroad at present can not fundamentally solve problems such as volume, cost, energy consumption, noise, reliability and practicality simultaneously, and this is a big problem that urgency is to be solved.

The utility model content

The purpose of the utility model aim to provide a kind of simple in structure, volume is little, cost is low, noiseless, crank type electromagnetic switch mechanism that reliability is high, replaces above-mentioned electromagnetic switch mechanism.

The utility model crank type electromagnetic switch mechanism comprises moving contact rack, moving iron core, iron core, rectifier bridge, spring, electric capacity, skeleton, coil; Wherein moving contact rack is installed on the moving iron core, and coil is in skeleton, and rectifier bridge, electric capacity are installed on the skeleton; Skeleton is installed in the middle of the iron core; 2 lead-out wires of coil are connected on the dc output end of rectifier bridge, it is characterized in that, on moving iron core, backstay are housed; Backstay is connected with an end of connecting rod; The middle and upper part of iron core is connected with an end of bent axle, and the other end of bent axle links to each other with the other end of connecting rod, the radius of adjustment bent axle or the angle that connecting rod two ends axis hole centre-to-centre spacing is confirmed connecting rod two end axles centerline hole and bent axle diaxon centerline hole.

Side at iron core is equipped with travel switch, and the common port of said travel switch connects an end of rectifier bridge input, the other end of another termination power of rectifier bridge input.

A guide rod respectively is housed on the support of iron core both sides, and 2 springs are enclosed within respectively in the guide rod, and said moving iron core sleeve is in guide rod; Side at moving iron core is equipped with touching lever; When touching lever servo-actuated iron core moved to the lowest order closing position, touching lever acted on the conversion of travel switch contact, and the normally closed contact of travel switch is wired to power supply; Normal opened contact serial connection electric capacity one end, the other end of electric capacity also inserts power supply.

The operation principle of the utility model crank type electromagnetic switch mechanism is: power supply is received travel switch normally closed contact input, and coil gets electric, and moving iron core is action downwards under the effect of electromagnetic force; At this moment, moving iron core drivening rod rotates, and bent axle also rotates thereupon; When bent axle turns to position, bottom dead centre near region, plane butt on moving iron core lower plane and the iron core, bent axle stops operating; This moment is because travel switch normally closed contact deenergization; Normal opened contact is connected another ring current, but the Weak current maintaining body in the closing coil on closing position, separating brake during coil losing electricity.According to deciliter test of 1000A crank type electromagnetic switch mechanism, the holding power when reliably closing a floodgate has only 2W.Adjustment crank throw or connecting rod two ends axis hole centre-to-centre spacing; Connecting rod two end axles centerline hole and bent axle diaxon centerline hole angle have just been confirmed; Angle is a zero degree during dead-centre position, and is because do not need micropower to keep during zero degree, also non-shut-brake during dead electricity; So use micropower to keep reliable combined floodgate principle, be the core of crank type electromagnetic switch mechanism near region, bent axle dead point.

The advantage of the utility model: it is little to keep electric current after close a floodgate (1), noiseless during work; (2) moving contact is done upper and lower motion under the prerequisite of guide rod guiding, and the swing gap is little, and dynamic and static contact contact wear is little; (3) iron core and moving iron core adopt the general steel manufacturing of A3, embedding short-circuited conducting sleeve not in the iron core, and cost is low; (4) guaranteed the high reliability of mechanism's divide-shut brake, it is just the same to external wiring way and traditional electro-magnet switch mechanism; (5) dynamic/static contact pressure with open apart from guaranteeing easily, copper loss during frequent operation, iron loss are little.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the closing position structural representation;

Fig. 3 is the bent axle sketch map;

Fig. 4 is the connecting rod sketch map;

Fig. 5 is the skeleton sketch map;

Fig. 6 is the moving contact rack sketch map;

Fig. 7 is moving iron core sketch map;

Fig. 8 is the iron core sketch map;

Fig. 9 is the travel switch sketch map;

Figure 10 is the utility model circuit diagram.

Embodiment

Embodiment:

Referring to Fig. 1-Figure 10:

The utility model is made up of moving contact rack 1, backstay 2, moving iron core 3, guide rod 4, iron core 5, rectifier bridge 6, spring 7, connecting rod 8, bent axle 9, touching lever 10, travel switch 11, electric capacity 12, skeleton 13, coil 14, and wherein coil 14 is in skeleton 13, and rectifier bridge 6, electric capacity 12 are installed on the skeleton 13; Skeleton 13 is installed in the middle of the iron core 5, and 2 lead-out wires of coil 14 are connected on the dc output end of rectifier bridge 6, and said guide rod 4 has 2; Spring 7 has 2, and 2 guide rods 4 are installed in respectively on the pedestal of iron core 5 both sides, and 2 springs 7 are enclosed within respectively in the guide rod 4; Touching lever 10 is installed in a side of moving iron core 3, and travel switch 11 is installed in a side of iron core 5, and backstay 2, moving contact rack 1 are installed on the moving iron core 3; Moving iron core 3 is sleeved in the guide rod 4, and when touching lever 10 servo-actuated iron cores 3 moved to the lowest order closing position, touching lever 10 acted on the conversion of travel switch 11 contacts; The normally closed contact of travel switch 11 is wired to power supply; One end of normal opened contact serial connection electric capacity 12, the other end of electric capacity 12 also inserts power supply, and the common port of travel switch 11 connects an end of rectifier bridge 6 inputs; The other end of rectifier bridge 6 another termination powers of input; One end of bent axle 9 is installed in the middle and upper part of iron core 5, and an end of connecting rod 8 is installed on the backstay 2, and the other end links to each other with the other end of bent axle 9.The radius or the connecting rod 8 two ends axis hole centre-to-centre spacing of adjustment bent axle 9; Connecting rod 8 two end axles centerline holes and bent axle 9 diaxon centerline hole angles have just been confirmed, the radius of adjustment bent axle or the angle that connecting rod two ends axis hole centre-to-centre spacing is confirmed connecting rod two end axles centerline hole and bent axle diaxon centerline hole.Angle is a zero degree during dead-centre position.

The operation principle of the utility model crank type electromagnetic switch mechanism is: power supply is received travel switch 11 normally closed contact inputs, and coil 14 gets electric, and moving iron core 3 is action downwards under the effect of electromagnetic force; At this moment, moving iron core 3 drivening rods 8, bent axle 9 also rotates thereupon; When bent axle 9 turns to position, bottom dead centre near region, plane butt on moving iron core 3 lower planes and the iron core 5, bent axle 9 stops operating; This moment is because travel switch 11 normally closed contact deenergizations; Normal opened contact is connected another ring current, but the Weak current maintaining body in the closing coil 14 on closing position, separating brake during coil 14 dead electricity.According to deciliter test of 1000A crank type electromagnetic switch mechanism, the holding power when reliably closing a floodgate has only 2W.

Because do not need micropower to keep during zero degree, also non-shut-brake during dead electricity, so use micropower to keep reliable combined floodgate principle, be the core of crank type electromagnetic switch mechanism near region, bent axle 9 dead point.

Claims (3)

1. crank type electromagnetic switch mechanism comprises moving contact rack, moving iron core, iron core, rectifier bridge, spring, electric capacity, skeleton, coil, and wherein moving contact rack is installed on the moving iron core; Coil is in skeleton; Rectifier bridge, electric capacity are installed on the skeleton, and skeleton is installed in the middle of the iron core, and 2 lead-out wires of coil are connected on the dc output end of rectifier bridge; It is characterized in that; On moving iron core, backstay is housed, backstay is connected with an end of connecting rod, and the middle and upper part of iron core is connected with an end of bent axle; The other end of bent axle links to each other with the other end of connecting rod, the radius of adjustment bent axle or the angle that connecting rod two ends axis hole centre-to-centre spacing is confirmed connecting rod two end axles centerline hole and bent axle diaxon centerline hole.

2. crank type electromagnetic switch according to claim 1 mechanism ,It is characterized in that in a side of iron core travel switch is housed, the common port of said travel switch connects an end of rectifier bridge input, the other end of another termination power of rectifier bridge input.

3. crank type electromagnetic switch according to claim 1 mechanism ,It is characterized in that a guide rod respectively is housed, and 2 springs are enclosed within the guide rod respectively on the support of iron core both sides; Said moving iron core sleeve is equipped with touching lever in a side of moving iron core, when touching lever servo-actuated iron core moves to the lowest order closing position in guide rod; Touching lever acts on the conversion of travel switch contact; The normally closed contact of travel switch is wired to power supply, normal opened contact serial connection electric capacity one end, and the other end of electric capacity also inserts power supply.

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