CN113823531B - Intelligent double-circuit alternating-current contactor - Google Patents
Intelligent double-circuit alternating-current contactor Download PDFInfo
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- CN113823531B CN113823531B CN202111068791.8A CN202111068791A CN113823531B CN 113823531 B CN113823531 B CN 113823531B CN 202111068791 A CN202111068791 A CN 202111068791A CN 113823531 B CN113823531 B CN 113823531B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/32—Latching movable parts mechanically
- H01H50/321—Latching movable parts mechanically the mechanical latch being controlled directly by the magnetic flux or part of it
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/44—Magnetic coils or windings
Abstract
The invention discloses an intelligent double-path alternating current contactor, which comprises a contactor body, and is characterized in that the contactor body comprises: the shell is internally provided with a power supply switching unit and a plurality of self-locking devices; the power supply switching unit comprises an A-path power supply input, a B-path power supply input end and a load output end; when the input end is switched from the A path to the B path, the self-locking device triggers self-locking and cuts off the input of the B path power supply; self-locking device: the self-locking device comprises a self-locking device body and a coil controller, wherein when the coil controller is closed, the self-locking device is triggered to unlock and the power supply A path is switched to be connected with the load output. When the contactor self-locking device is started, the alternating current contactor coil stops supplying power, and the contactor is operated without power consumption after the contactor self-locking device is started; the intelligent double-path alternating-current contactor can be freely combined and applied according to different use scenes, so that the effect of multiple purposes is realized; when the self-locking pin connecting rod moves downwards along with the upper electromagnetic iron core, the self-locking pin buckle head is self-locked in place, so that dislocation faults of the upper electromagnetic iron core and the lower electromagnetic iron core of the alternating current contactor are prevented.
Description
Technical Field
The invention relates to the field of electric switches, in particular to an intelligent double-path alternating-current contactor.
Background
The summer air temperature is high, but the temperature is generally 6-7 ℃ lower than that of a large city in a remote mountain area, so that the mountain area is a summer-heat-avoiding resort, surrounding mountain forests are fresh in wind and light, and the mountain area is a good place for relieving mental stress, so that the mountain area is favored by urban people. In recent years, the appearance of an emerging tourism and leisure civil sink and farmhouse happiness has good economic benefits for promoting rural tourism, adjusting industry structures, building regional economy and accelerating the process of agricultural marketing. Because the summer is the season with the highest power supply network power load, the equipment runs at full load under the environment with extremely high temperature, the fault rate and the low voltage are unavoidable, and the requirements of the civil and farmyard on the power supply reliability and the power supply quality of the distribution network are higher.
After power failure occurs, power supply switching is needed, and an alternating current contactor is widely applied to the field of power line breaking and control as an important device. The contactor is an electric appliance which uses a coil to flow current to generate a magnetic field in industry so as to close a contact to control a load. The contactor is composed of an electromagnetic system (iron core, static iron core, electromagnetic coil) contact system (normally open contact and normally closed contact) and an arc extinguishing device. The principle is that when the electromagnetic coil of the contactor is electrified, a strong magnetic field is generated, so that the static iron core generates electromagnetic attraction force to attract the armature and drive the contact to act, and the contactor is attracted. When the coil is powered off, the electromagnetic attraction force disappears, the armature is released under the action of the release spring, and the contactor is disconnected.
The alternating current contactor is used for supplying alternating current, is a low-voltage electrical appliance which is widely applied in industrial production and is mainly used for controlling the running and stopping of electric equipment such as a motor and the like, so that the alternating current contactor is the most common electrical equipment in the industry, and has huge national installation quantity and use quantity. Because the ac contactor with large and medium capacity is in holding state, the active power consumed by each contactor is about 60W on average, if the electricity-saving technology is adopted, at least several billions of electric energy can be saved each year, which is equivalent to several billions of RMB. After the AC contactor is attracted, the coil of the AC contactor is still electrified with AC, and the power consumption caused by iron loss and copper loss is great, so that the coil generates heat and has great noise, electric energy is wasted, and the insulation of the coil is easy to age, so that the service life of the AC contactor is shortened. By adopting the energy-saving device, the service life of the alternating current contactor can be greatly prolonged, and the loss of copper in the alternating current contactor can be reduced. Under the large environment of energy conservation and emission reduction, the energy consumption of the alternating current contactor is reduced, and the energy-saving alternating current contactor has obvious economic and social benefits.
The existing energy-saving device of the alternating current contactor also adopts a mode of high current attraction and low current maintenance, but the existing technology has the following defects: at present, during energy saving, the small current is usually kept unchanged, or the direct current pulse width for controlling the small current is kept unchanged. The direct current working mode of the alternating current contactor leads the impedance to be small, when the external voltage becomes high, the current in the coil is large, the coil generates a large amount of heat, and the alternating current contactor is burnt. As in the patent of application number 00228518.5, the energy-saving principle also adopts high-current attraction and low-current maintenance; the small current flowing through the AC contactor is also controlled by a DC narrow pulse, the pulse width is fixed, and the long-time working is most likely to cause the AC contactor to heat and burn.
Disclosure of Invention
The invention provides an intelligent double-path alternating-current contactor which is used for solving the problems that the alternating-current contactor in the prior art still consumes electricity after being put into operation, and has low service life and potential safety hazard in the energy-saving alternating-current contactor.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
an intelligent double-circuit alternating current contactor, includes the contactor body, the contactor body includes: the shell is internally provided with a power supply switching unit and a plurality of self-locking devices;
the power supply switching unit comprises an A-path power supply input, a B-path power supply input end and a load output end; when the input end is switched from the A path to the B path, the self-locking device triggers self-locking and cuts off the input of the B path power supply;
self-locking device: the self-locking device comprises a self-locking device body and a coil controller, wherein when the coil controller is closed, the self-locking device is triggered to unlock and the power supply A path is switched to be connected with the load output. When the intelligent double-way alternating-current contactor is connected to the power supply, the power supply of the A-way power supply and the output of the load are closed when the coil is not electrified, namely the normally closed state of the contact, so that the contactor does not need to consume electricity. When switching from the A-path power supply access to the B-path power supply access, the transmission connecting rod drives the moving contact to be downwards closed with the B-path power supply access fixed contact, the B-path power supply access is conducted with load output, the automatic switching of a power supply line from the A-path to the B-path is completed, and meanwhile, the moving contact is downwards separated from the B-path power supply access fixed contact and power supply is stopped, so that the intelligent double-path alternating-current contactor does not consume power in the operation.
Preferably, the self-locking device comprises a self-locking iron core magnet, a self-locking pin and a self-locking seat which are arranged from top to bottom, the self-locking pin iron core is arranged at the upper end of the self-locking pin, the coil controller is arranged at the bottom of the self-locking seat and is connected with the self-locking iron core magnet, and the self-locking iron core magnet comprises a self-locking iron core magnet coil and a self-locking iron core magnet core. The self-locking pin can be pushed by external force to be inserted into the self-locking seat, when the external force disappears, the self-locking pin can be kept in a state of being inserted into the self-locking seat, and the self-locking pin can be sucked out of the self-locking seat by magnetic force generated by magnetic electricity of the self-locking iron core.
Preferably, the shell comprises a base, the base comprises a side plate and a bottom plate, a lead wire row is arranged on the bottom plate, a self-locking iron core magnetic coil is electrically connected with the lead wire row, and a plurality of self-locking iron core magnets are fixedly connected with the side plate. The self-locking iron core magnetic coil is electrified and generates a magnetic field, the self-locking iron core magnetic coil is deenergized, and the magnetic field disappears.
Preferably, the power supply switching unit comprises a moving contact, an A-path power supply fixed contact arranged above the moving contact, a B-path power supply fixed contact arranged below the moving contact and a transmission connecting rod; the top of the transmission connecting rod is elastically connected with the upper wall of the inner side of the shell, the movable contact is fixed with the rod body of the transmission connecting rod, the lower end of the transmission connecting rod is provided with an upper electromagnetic iron core, a lower electromagnetic iron core is arranged below the upper electromagnetic iron core, the lower electromagnetic iron core is fixedly arranged on the upper surface of the bottom plate, a coil is arranged in the lower electromagnetic iron core, a lead wire of the coil is connected on a lead wire row, a plurality of self-locking pins are fixedly arranged on the side surface of the upper electromagnet, and a plurality of self-locking seats are fixedly arranged on the side surface of the lower electromagnetic iron core. The A-path power supply fixed contact and the B-path power supply fixed contact adopt drawer type to pass through the position hole of the base side plate of the double-path alternating current contactor and adopt screw fixation, the screw can be taken down and the A-path power supply fixed contact and the B-path power supply fixed contact are pulled out from the position hole during maintenance, the moving contact is fixed with the transmission connecting rod in the middle of a rod shape, the moving contact is provided with two contacts, the two contacts are respectively arranged below the A-path power supply fixed contact and above the B-path power supply fixed contact, the moving contact is connected with the load output end through a flexible flat cable, the transmission connecting rod is convenient to move up and down, the contact surface of the moving contact is provided with a moving contact pressure spring, the spring is of an arc surface structure and is integrally designed with the moving contact pressure spring, and the contact surface is increased when the moving contact and the moving contact pressure spring are closed.
Preferably, a displacement limiting plate is arranged between the plurality of self-locking iron core magnets, a through hole is arranged on the displacement limiting plate, the transmission connecting rod penetrates through the through hole to be connected with the upper electromagnetic iron core, and a buffer spring is arranged between the displacement limiting plate and the upper electromagnetic iron core. The displacement limiting plate is arranged to prevent the position deviation when the transmission connecting rod moves up and down, and the buffer spring can play a role in buffering when the downward suction force and the upward pulling force are overlarge when the buffer spring is reset.
Preferably, the self-locking pin comprises a self-locking pin connecting rod, the self-locking pin iron core is arranged at the upper end of the self-locking pin connecting rod, a self-locking pin buckle head is arranged at the lower end of the self-locking pin connecting rod, a self-locking pin triangular head is arranged at the end part of the buckle head, and a self-locking pin limiting block is arranged on the rod body of the self-locking pin connecting rod in a surrounding manner. When the self-locking pin moves downwards, the self-locking pin limiting block limits the downwards moving position, the self-locking pin connecting rod extends out of the bottom surface of the upper electromagnetic iron core close to the lower part 1/3, and when the self-locking pin moves downwards along with the upper electromagnetic iron core, the self-locking pin buckle head can be inserted into the self-locking seat. The self-locking pin buckle head is elliptical, the self-locking pins are fixedly arranged on the two sides of the upper electromagnetic iron core by adopting screws, the self-locking pin iron core is arranged at the upper part of the self-locking pin, and after the magnetic core of the self-locking iron core generates a magnetic field, the self-locking pin iron core can move upwards under the action of suction force.
Preferably, the self-locking seat further comprises a plurality of elastic self-locking catches uniformly arranged on the side wall of the self-locking seat. When the self-locking pin moves downwards along with the upper electromagnetic iron core, the elastic self-locking buckle can be compressed to move inwards, and the self-locking pin buckle head can be inserted into the self-locking seat.
Preferably, the coil controller comprises a coil controller limiting block, a coil controller connecting rod and a coil controller switch which are arranged from top to bottom, the coil controller comprises a switch moving contact and a switch fixed contact, the switch moving contact and the switch fixed contact are normally closed, and when the self-locking pin is inserted into the self-locking seat, the coil controller connecting rod moves downwards to push the moving contact to displace, so that the switch moving contact and the switch fixed contact are separated from a closed state and separated from the closed state. The coil controller limiting block consists of a bowl-shaped upper part and a square lower part, an opening of the bowl-shaped upper part faces upwards, a coil controller connecting rod is led out from the middle position of the square lower part, the bowl-shaped shape can better catch objects with downward thrust, the rectangular limiting block can prevent the coil controller from being damaged by overlarge external force, a coil controller buffer spring is sleeved outside the coil controller connecting rod, the coil controller is connected with a coil controller switch, the coil controller switch is in a normally closed state when the coil controller is not pressed downwards externally, and when the coil controller limiting block has downward thrust, the coil controller connecting rod is pushed downwards to open the coil controller switch, and the switch state is changed from normally closed to normally open; when the downward force is eliminated, the coil controller buffer spring drives the coil controller connecting rod to move upwards, the coil controller switch is restored to a normally closed state, and the coil controller lead is connected with the lead row of the base seat.
Preferably, the elastic self-locking buckle comprises a bowl-shaped limiter and a sliding ball buckle arranged on the inner side of the bowl-shaped limiter, and a coil controller buffer spring is arranged at the bottom of the bowl-shaped limiter. The self-locking seat buffer spring is fixedly connected with the bowl-shaped limiter, when external force acts, the bowl-shaped limiter can compress the self-locking seat buffer spring to move inwards, and after the external force is eliminated, the self-locking seat buffer spring is restored to the state, and the bowl-shaped limiter is reset.
Preferably, the load output end is flexibly and electrically connected with the movable contact. The movable contact is fixed with the transmission connecting rod in the middle of the rod-shaped, the movable contact is provided with two contacts, the two contacts are respectively arranged below the A-path power supply fixed contact and above the B-path power supply fixed contact, the movable contact is connected with the load output end through a soft flat cable, the transmission connecting rod can conveniently move up and down, and the A-path power supply fixed contact and the movable contact are in a normally closed state when the coil is not electrified when the contactor is connected in use, so that the contactor does not need to consume electricity. When the power supply is switched from the power supply of the A path to the power supply of the B path, the transmission connecting rod drives the moving contact to be closed with the power supply of the B path downwards, the power supply of the B path is conducted with the output of the load, the automatic switching of the power supply line from the A path to the B path is completed, and meanwhile, the moving contact is separated from the power supply of the B path downwards by the power supply of the B path.
The double-circuit alternating current contactor still includes manual switch SB1 and manual switch SB2, manual switch SB2 one end is connected with left side auto-lock iron core magnetic coil one end and right side auto-lock iron core magnetic coil, and left side auto-lock iron core magnetic coil other end and right side auto-lock iron core magnetic coil other end and zero line are connected, and the manual switch SB2 other end is connected with the live wire, and manual switch SB1 one end is connected with live wire, and the manual switch SB1 other end is connected with coil one end, and the coil other end is connected with right side coil controller switch one end, and the right side coil controller switch other end is connected with left side coil controller switch one end, and the left side switch controller other end is connected with zero line. The live wire is externally connected with a B-path power relay.
Therefore, the invention has the following beneficial effects: (1) When the contactor self-locking device is started, the alternating current contactor coil stops supplying power, so that the operation without power consumption is realized after the contactor self-locking device is started; (2) The intelligent double-path alternating-current contactor can be freely combined and applied according to different use scenes, so that the effect of multiple purposes is realized; (2) When the self-locking pin connecting rod moves downwards along with the upper electromagnetic iron core, the self-locking pin buckle head is self-locked in place, so that dislocation faults of the upper electromagnetic iron core and the lower electromagnetic iron core of the alternating current contactor are prevented.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent two-way ac contactor according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of a self-locking device according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of the electrical wiring of an intelligent two-way ac contactor according to an embodiment of the present invention.
In the figure: 200 double-circuit alternating current contactor shells, 201 reset springs, 202 arc extinguishing devices, 203 circuit power supply access, 204A circuit power supply access, 205 load output, 206 moving contact pressure springs, 207 contacts, 208 soft connection winding displacement, 209 transmission connecting rods, 210 limit moving plates, 211 buffer springs, 212 upper electromagnetic cores, 213 lower electromagnetic cores, 214 coils, 215 base, 216 lead rows, 231 self-locking core magnets, 232 self-locking pins, 233 self-locking seats, 234 coil controllers, 2311 self-locking core magnet coil leads, 2312 self-locking core magnet coils, 2313 self-locking core magnet fixing screws, 2314 self-locking core magnet cores, 2321 self-locking pin cores, 2322 self-locking pin connecting rods, 2323 self-locking pin limiting blocks, 2324 self-locking pin oval buckling positions, 2325 self-locking pin triangular heads, 2326 self-locking pin fixing screws, 2331 sliding ball buckles, 2332 bowl-shaped limiters, 2333 self-locking seat buffer springs, 2341 coil controller buffer springs, 2342 coil controller leads, 2343 coil controller limiting positions, 2344 coil controller switches and 2345 coil controllers.
Detailed Description
The invention is further described below with reference to the drawings and detailed description.
Examples:
an intelligent double-path alternating-current contactor shown in fig. 1 comprises a double-path alternating-current contactor 200 and two groups of contactor self-locking devices 230, wherein the self-locking devices 230 comprise self-locking iron core magnets 231, self-locking pins 232, self-locking seats 233 and coil controllers 234 which are arranged from top to bottom.
The coil controller 234 is mounted at the bottom of the self-locking seat 233, the coil controller 234 is electrically connected with the self-locking iron core magnet 231, and the self-locking iron core magnet 231 is composed of a self-locking iron core magnet coil lead 2311, a self-locking iron core magnet coil 2312, a self-locking iron core magnet fixing screw 2313 and a self-locking iron core magnet core 2314; the coil controller 234 comprises a coil controller limiting block 2343, a coil controller connecting rod 2345 and a coil controller switch 2344 which are arranged from top to bottom, the coil controller 234 is characterized in that the coil controller limiting block 2345 is led out from the middle position of the lower part of the coil controller limiting block 2343 which is integrally formed by a bowl-shaped upper part and a square lower part, the bowl-shaped shape can better catch objects with downward thrust, the rectangular limiting block can prevent the coil controller 234 from being damaged by excessive external force, the coil controller connecting rod 2345 passes through a coil controller buffer spring 2341 to be connected with the coil controller switch 2344, the coil controller switch 2344 is in a normally closed state when the coil controller 234 does not have external downward pressure, and when the coil controller limiting block 2343 has downward thrust, the coil controller connecting rod 2345 pushes the coil controller switch 2344 downwards, and the switch state is changed from normally closed to normally open; when the downward force is removed, the coil controller buffer spring 2341 drives the coil controller link 2345 to move upward, the coil controller switch 2344 returns to the normally closed state, and the coil controller leads 2342 are connected to the lead line 216 of the base 215.
The self-locking pin 232 is composed of a self-locking pin iron core 2321, a self-locking pin connecting rod 2322, a self-locking pin limiting block 2323, a self-locking pin elliptical buckling position 2324, a self-locking pin triangular head 2325 and a self-locking pin fixing screw 2326; the upper portion is the self-locking tip iron core 2321, after self-locking iron core magnetism 231 self-locking iron core magnet core 2314 produced the magnetic field, self-locking tip iron core 2321 can upwards move because of the suction effect, self-locking tip 232 intermediate position fixed mounting has self-locking tip connecting rod 2322 and self-locking tip stopper 2323, when self-locking tip 232 downward movement, self-locking tip stopper 2323 can realize extreme position control, self-locking tip connecting rod 2322 stretches out electromagnetic core 212 bottom in being close lower part 1/3, the lower part is installed and is detained position 2324 and self-locking tip triangle head 2325 from the oval knot of self-locking tip, when self-locking tip 232 moves down along with last electromagnetic core 212, can insert auto-locking seat 233.
The upper part of the self-locking seat 233 is provided with a self-locking seat buffer spring 2333, a bowl-shaped limiter 2332 and a sliding ball button 2331, the self-locking seat buffer spring 2333 is fixedly connected with the bowl-shaped limiter 2332, when external force acts, the bowl-shaped limiter 2332 can compress the self-locking seat buffer spring 2333 to move inwards, and after the external force is eliminated, the self-locking seat buffer spring 2333 is restored to a state, and the bowl-shaped limiter 2332 is reset.
The double-circuit AC contactor shell 200 is internally provided with a power supply switching unit, the power supply switching unit comprises a reset spring 201, an arc extinguishing device 202, an A-circuit power supply access 204, a B-circuit power supply access 203, a load output 205, a movable contact pressure spring 206, a contact 207, a flexible connection flat cable 208, a transmission connecting rod 209, a limiting moving plate 210, a buffer spring 211, an upper electromagnetic iron core 212, a lower electromagnetic iron core 213, a coil 214, a base 215 and a lead wire row 216, wherein the A-circuit power supply access 204 is fixed at a position hole which passes through a base side plate of the double-circuit AC contactor by adopting a fixed contact of the A-circuit power supply and is fixed by adopting a screw, and the B-circuit power supply access 203 is fixed at a position hole which passes through a base side plate of the double-circuit AC contactor by adopting a fixed contact of the B-circuit power supply and is fixed by adopting a screw.
The top of the transmission connecting rod 209 is elastically connected with the upper wall of the inner side of the double-circuit alternating-current contactor shell 200 through a reset spring 201, the moving contact is in a rod shape, the moving contact in the middle of the moving contact is fixed with a rod body of the transmission connecting rod 209, the moving contact is provided with two contacts, the two contacts are respectively arranged below the A-path power supply fixed contact and above the B-path power supply fixed contact, the moving contact is connected with a load output end through a soft flat cable, the transmission connecting rod can conveniently move up and down, the moving contact surface of the moving contact is provided with a moving contact pressure spring 206, the spring is in an arc surface structure, the spring is integrally designed with the moving contact pressure spring 206, and the contact surface is increased when the fixed contact and the moving contact pressure spring 206 are closed. The two sides of the displacement limiting plate 210 are fixed with self-locking iron core magnets 231 by screws, the transmission connecting rod 209 penetrates down through the middle holes of the displacement limiting plate 210 and the buffer spring 211 to be connected with the middle of the upper electromagnetic iron core 212, the displacement limiting plate 210 is arranged to prevent the position deviation when the transmission connecting rod 209 moves up and down, and the buffer spring 211 can solve the problems of overlarge downward suction force and upward pulling force when the transmission connecting rod returns; the top of the self-locking iron core magnet 231 is provided with a self-locking iron core magnet fixing screw 2313 for fixing the device, the middle of the self-locking iron core magnet is provided with a self-locking iron core magnet coil lead 2311, two ends of the self-locking iron core magnet coil 2312 are electrically connected with the lead row 216 of the base 215, the lower part of the self-locking iron core magnet coil 2311 is provided with a self-locking iron core magnet 2314, and when the self-locking iron core magnet coil 2312 is powered on, the self-locking iron core magnet core 2314 generates a magnetic field.
The lower end of the transmission connecting rod 209 is provided with a mountain-shaped upper electromagnetic iron core 212, a mountain-shaped lower electromagnetic iron core 213 is arranged below the upper electromagnetic iron core 212, and two sides of the upper electromagnetic iron core 212 are fixedly provided with self-locking pins 232 by adopting screws.
The lower electromagnetic iron core 213 is fixedly arranged on the upper surface of the bottom plate, a coil 214 is arranged in the lower electromagnetic iron core 213, a lead wire of the coil 214 is connected to the lead wire row 216, a plurality of self-locking pins 232 are fixedly arranged on the side surface of the upper electromagnetic iron core 212, and a plurality of self-locking seats 233 are fixedly arranged on the side surface of the lower electromagnetic iron core 213.
The double-circuit alternating current contactor still includes manual switch SB1 and manual switch SB2, manual switch SB2 one end is connected with left side auto-lock iron core magnetic coil one end and right side auto-lock iron core magnetic coil, and left side auto-lock iron core magnetic coil other end and right side auto-lock iron core magnetic coil other end and zero line are connected, and the manual switch SB2 other end is connected with the live wire, and manual switch SB1 one end is connected with live wire, and the manual switch SB1 other end is connected with coil 214 one end, and the coil 214 other end is connected with right side coil controller switch one end, and the right side coil controller switch other end is connected with left side coil controller switch one end, and the left side switch controller other end is connected with zero line. The live wire is externally connected with a B-path power relay.
When the intelligent double-way alternating-current contactor is connected in use, the power consumption of the contactor is not required because the A-way power supply connection and the load output are closed when the coil 214 is not electrified, namely, the normally closed state of the contacts. When switching from the A-path power supply to the B-path power supply, the relay is energized, the relay contacts are changed from a normally open state to a normally closed state, and the coil 214 is energized. The coil in the lower electromagnetic iron core 213 of the 'mountain' shape at the lower part of the double-circuit alternating-current contactor is electrified to generate a magnetic field, the upper electromagnetic iron core 212 of the inverted 'mountain' shape at the upper part of the double-circuit alternating-current contactor is downward due to the attraction force, the transmission connecting rod drives the moving contact to be downward and the B-path power supply access fixed contact to be closed, the B-path power supply access is conducted with the load output, the automatic switching of the power supply line from the A path to the B path is completed, and meanwhile, the moving contact is separated from the B-path power supply access fixed contact downward, and the power supply is stopped.
The contactor self-locking devices arranged on two sides of the electromagnetic iron core of the double-circuit alternating-current contactor move along with the electromagnetic iron core 212 on the contactor, the self-locking tip triangular head 2325 moves, and the self-locking tip triangular head 2325 is propped against the coil controller 234 through the rotation of the sliding ball catch 2331 arranged in the bowl-shaped limiter, so that the coil controller 234 is opened due to the downward force of the connecting rod of the coil controller 234, the switch of the coil controller 234 is changed from original normally closed to normally open, and meanwhile, the switch and the coil 214 of the double-circuit alternating-current contactor are powered by a zero line series circuit, so that the coil 214 of the double-circuit alternating-current contactor is powered off, and the self-locking tip 232 part of the self-locking device is clamped in the sliding ball catch 2331 of the self-locking seat part, so that the self-locking tip 232 stays in the self-locking seat 233 forever under the condition of no other upward external force, and the moving and contact closed state of the double-circuit alternating-current contactor coil is realized under the condition of losing power.
When the intelligent double-circuit alternating-current contactor is unlocked, the relay coil is continuously electrified for 2 seconds, the disconnection mode is immediately restored, the self-locking iron core magnet 231 coils connected to the two sides of the double-circuit alternating-current contactor in parallel are electrified in a continuous electrifying period, the self-locking iron core magnet core 2314 generates magnetic field attraction, the self-locking pin iron core 2321 moves due to the upward magnetic field attraction, the self-locking pin oval buckling position 2324 rolls upwards to be separated from the self-locking seat 233 through the sliding ball buckle 2331 of the self-locking seat, the self-locking pin 232 is successfully separated from the self-locking seat 233, the moving contact of the double-circuit alternating-current contactor is upwards contacted and closed with the static contact point of the power supply connected with the A-circuit power supply, and the power supply is switched from the B-circuit to the A-circuit.
When the intelligent double-way alternating-current contactor is in a manual starting mode: the B-path power supply of the intelligent double-path alternating-current contactor is connected with an external power supply, and the load output 205 is connected with a motor or electric equipment. When the SB1 normally open button is pressed, current flows from the other end of the contactor coil 214 to the right coil controller switch, then flows from the other end to the left coil controller switch, and then flows from the other end to the power supply zero line, the power supply loop is conducted, the coil in the lower part of the contactor is electrified to generate magnetic field suction force, the upper part of the contactor moves downwards to the upper electromagnetic iron core in the shape of the mountain, the self-locking pins fixed on both sides of the upper electromagnetic iron core also move along with the upper electromagnetic iron core, the self-locking pins 232 are inserted into the self-locking seats 233, when the self-locking pin triangular heads 2325 contact the self-locking pin coil controller and push downwards, the coil controller switch is changed from the original normally closed state to the normally open state, the power supply loop is conducted and disconnected, the contactor coil is in power failure and the lower electromagnetic iron core is in the magnetic field failure, but the self-locking triangular heads 2325 on both sides of the upper electromagnetic iron core are buckled into the self-locking seat bowl-shaped limiters 2332 in the ball buckling resistance, the transmission connecting rod of the contactor cannot recover, and the power supply on the stationary contact and the load output contact are in the closed state, so that the power consumption of the contactor is not consumed.
Manual unlocking: the normally open button is pressed for about 2 seconds, the self-locking iron core magnetic coils connected to the two sides of the contactor are powered on, the self-locking iron core magnetic cores 2314 generate magnetic field attraction force, the self-locking pin iron cores 2321 move due to the magnetic field attraction force upwards, the self-locking pin elliptical buckling positions 2324 are separated from the self-locking seat 233 upwards in a rolling way through the sliding ball buckles 2331 of the self-locking seat 233, the self-locking pins 232 are successfully separated from the self-locking seat 233, the moving contact of the double-circuit alternating current contactor is connected and separated with a B-circuit power supply upwards, and the contactor stops operating.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the terms contactor, self-locking pin, self-locking seat, core magnet core, etc. are used more herein, the possibility of using other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.
Claims (5)
1. An intelligent double-circuit alternating current contactor, includes the contactor body, characterized by, the contactor body includes: the shell is internally provided with a power supply switching unit and a plurality of self-locking devices;
the power supply switching unit comprises an A-path power supply input, a B-path power supply input end and a load output end; when the input end is switched from the A path to the B path, the self-locking device triggers self-locking and cuts off the input of the B path power supply;
self-locking device: the self-locking device comprises a self-locking device body and a coil controller, wherein when the coil controller is closed, the self-locking device is triggered to unlock and the power supply A path is switched to be connected with the load output;
the self-locking device comprises a self-locking iron core magnet, a self-locking pin and a self-locking seat which are arranged from top to bottom, a self-locking pin iron core is arranged at the upper end of the self-locking pin, the coil controller is arranged at the bottom of the self-locking seat, and the coil controller is connected with the self-locking iron core magnet;
the power supply switching unit comprises a moving contact, an A-path power supply fixed contact arranged above the moving contact, a B-path power supply fixed contact arranged below the moving contact and a transmission connecting rod; the top of the transmission connecting rod is elastically connected with the upper wall of the inner side of the shell, the movable contact is fixed with the rod body of the transmission connecting rod, the lower end of the transmission connecting rod is provided with an upper electromagnetic iron core, a lower electromagnetic iron core is arranged below the upper electromagnetic iron core, the lower electromagnetic iron core is fixedly arranged on the upper surface of the bottom plate of the base, a coil is arranged in the lower electromagnetic iron core, a lead wire of the coil is connected to a lead wire row, a plurality of self-locking pins are fixedly arranged on the side surface of the upper electromagnetic iron core, and a plurality of self-locking seats are fixedly arranged on the side surface of the lower electromagnetic iron core;
a displacement limiting plate is arranged between the plurality of self-locking iron core magnets, a through hole is arranged on the displacement limiting plate, the transmission connecting rod passes through the through hole and is connected with the upper electromagnetic iron core, and a buffer spring is arranged between the displacement limiting plate and the upper electromagnetic iron core;
the self-locking pin comprises a self-locking pin connecting rod, the self-locking pin iron core is arranged at the upper end of the self-locking pin connecting rod, a self-locking pin buckling head is arranged at the lower end of the self-locking pin connecting rod, a self-locking pin triangular head is arranged at the end part of the buckling head, and a self-locking pin limiting block is arranged on the rod body of the self-locking pin connecting rod in a surrounding manner;
the coil controller comprises a coil controller limiting block, a coil controller connecting rod and a coil controller switch which are arranged from top to bottom, the coil controller comprises a switch moving contact and a switch fixed contact, the switch moving contact and the switch fixed contact are normally closed, and when the self-locking pin is inserted into the self-locking seat, the coil controller connecting rod moves downwards to push the moving contact to displace, so that the switch moving contact and the switch fixed contact are separated from a closed state and are separated from the closed state.
2. The intelligent double-circuit alternating current contactor according to claim 1, wherein the shell comprises a base, the base comprises a side plate and a bottom plate, a lead wire row is arranged on the bottom plate, the self-locking iron core magnetic coil is electrically connected with the lead wire row, and the plurality of self-locking iron core magnets are fixedly connected with the side plate.
3. The intelligent two-way ac contactor according to claim 2, wherein said self-locking seat further comprises a plurality of elastic self-locking catches uniformly disposed on the side walls of the self-locking seat.
4. The intelligent double-circuit alternating current contactor according to claim 3, wherein the elastic self-locking buckle comprises a bowl-shaped limiter and a sliding ball buckle arranged on the inner side of the bowl-shaped limiter, and a coil controller buffer spring is arranged at the bottom of the bowl-shaped limiter.
5. The intelligent two-way ac contactor according to claim 4, wherein said load output is flexibly and electrically connected to said moving contact.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111068791.8A CN113823531B (en) | 2021-09-13 | 2021-09-13 | Intelligent double-circuit alternating-current contactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111068791.8A CN113823531B (en) | 2021-09-13 | 2021-09-13 | Intelligent double-circuit alternating-current contactor |
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| CN113823531A CN113823531A (en) | 2021-12-21 |
| CN113823531B true CN113823531B (en) | 2023-09-01 |
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| JP2002008505A (en) * | 2000-06-21 | 2002-01-11 | Kyoritsu Keiki Co Ltd | Electromagnetic contactor |
| FR2869156A1 (en) * | 2004-04-20 | 2005-10-21 | Tzo Ing Lin | Wide voltage range DC and AC contactor for remote telephone control system, has linkage with one end connected to movable iron core whose bottom is kept within range of retaining coil as magnetic coil is attracted by core |
| CN202094054U (en) * | 2011-05-30 | 2011-12-28 | 丁玉 | Energy-saving AC (alternating current) contactor |
| CN106847568A (en) * | 2017-04-07 | 2017-06-13 | 张中尧 | Multi-functional automatic switchover device and the operation/cutting method realized using the switch |
| CN108573831A (en) * | 2017-03-14 | 2018-09-25 | 施耐德电器工业公司 | Low-power consumption alternating current-direct current expansion module for A.C. contactor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190139720A1 (en) * | 2016-05-03 | 2019-05-09 | Binay Kumar | Energy efficient electromagnetic contactor using heart shaped driving pin operating mechanism |
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- 2021-09-13 CN CN202111068791.8A patent/CN113823531B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002008505A (en) * | 2000-06-21 | 2002-01-11 | Kyoritsu Keiki Co Ltd | Electromagnetic contactor |
| FR2869156A1 (en) * | 2004-04-20 | 2005-10-21 | Tzo Ing Lin | Wide voltage range DC and AC contactor for remote telephone control system, has linkage with one end connected to movable iron core whose bottom is kept within range of retaining coil as magnetic coil is attracted by core |
| CN202094054U (en) * | 2011-05-30 | 2011-12-28 | 丁玉 | Energy-saving AC (alternating current) contactor |
| CN108573831A (en) * | 2017-03-14 | 2018-09-25 | 施耐德电器工业公司 | Low-power consumption alternating current-direct current expansion module for A.C. contactor |
| CN106847568A (en) * | 2017-04-07 | 2017-06-13 | 张中尧 | Multi-functional automatic switchover device and the operation/cutting method realized using the switch |
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| CN113823531A (en) | 2021-12-21 |
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