CN104867785A

CN104867785A - Permanent magnetic contactor with breaking protection device

Info

Publication number: CN104867785A
Application number: CN201510237699.8A
Authority: CN
Inventors: 舒亮; 吴浪; 许成文; 吴桂初; 章上聪
Original assignee: Wenzhou University
Current assignee: Wenzhou University
Priority date: 2015-05-11
Filing date: 2015-05-11
Publication date: 2015-08-26
Anticipated expiration: 2035-05-11
Also published as: CN104867785B

Abstract

The invention relates to a permanent magnetic contactor with a breaking protection device. A machine housing is further provided with a compulsive tripping device. The compulsive tripping device comprises a compulsive breaking spring capable of realizing deformation energy storage. The compulsive breaking spring is provided with a deformation driving release end. The deformation driving release end is connected with a compulsive breaking jump cap capable of driving the disconnection between a moving contact and a static contact, which are in a switching-on state, in the energy releasing process of the compulsive breaking spring. The compulsive breaking jump cap is correspondingly matched with a latching mechanism used for latching or releasing the compulsive breaking spring. The latching mechanism is provided with a latching end which is capable of being matched with the compulsive breaking jump cap to realize that the compulsive breaking spring is latched in an energy storage state, and a trigger end which is used for driving the latching end and the compulsive breaking jump cap to release the compulsive breaking spring. The trigger end of the latching mechanism is connected with a trigger device. The permanent magnetic contactor has the advantages that compulsive breaking under a fault state is achieved, the fault protection function is realized; the safety performance is good; under a power failure condition, breaking by hands is simple and convenient; and the installation, the debugging and the test are convenient.

Description

With the permanent magnetism type contactor of disjunction protective device

Technical field

The present invention relates to contactor, be specifically related to permanent magnetism type contactor, be particularly with the contactor of disjunction protective device.

Background technology

? electrotechnicson, because fast shut-off can exchange with direct current major loop and the device controlling (certain model can reach 800 amperes) circuit with big current can be connected continually, so oftenapply to motor also can be used as controlling work factory as control system establish electrical load such as standby ﹑ electricity hot device ﹑ machine-tool and various kinds electric power unit etc. to resembling ﹐, circuit can not only be connected and cut off to contactor, but also have the effect of low-voltage release guard.Contactor is divided into by operating mechanism: electromagnetic treadle, permanent magnetism type contactor.

Permanent magnetism type contactor comprises contactor body and control circuit, contactor body comprises casing, permanent magnet operating device and contact apparatus, contact apparatus comprises the moving contact and fixed contact that cooperatively interact, moving contact is arranged on moving contact frame, permanent magnet operating device comprises dynamic iron core, permanent magnetism coil mechanism and reaction spring, dynamic iron core and moving contact installing rack are connected and realize controlling to move, fixed contact closed and disconnected, dynamic iron core coordinates with permanent magnetism coil mechanism, permanent magnetism coil mechanism comprises bobbin, divide-shut brake magnet exciting coil, yoke and permanent magnet, divide-shut brake magnet exciting coil is around on bobbin, permanent magnet and bobbin are arranged in yoke, reaction spring is dynamic, in fixed contact closing course, be forced to energy storage, move for helping, (the i.e. energy storage when closing a floodgate that fixed contact is separated, power is provided) when separating brake.Because the polarity of the permanent magnet be arranged in contactor yoke is changeless, and the divide-shut brake magnet exciting coil being fixed on yoke inside controls to produce magnetic field by control circuit, this magnetic field identically with permanent magnet magnetic field direction makes iron core move downward in the adhesive stage, thus make dynamic and static contact adhesive, complete making process; The sticking stage is kept closed by permanent magnet, and reaching closes a floodgate keeps; The disjunction stage is contrary with permanent magnet magnetic field direction makes iron core move upward from attracted position, thus dynamic and static contact is separated, and complete separating brake process, now reaction spring also provides separating brake power; Thus make the main contact of contactor reach adhesive, sticking, with the object of disjunction.

Wherein, control circuit comprises power supply, single-chip microcomputer, accumulator, magnet exciting coil forward ON-OFF control circuit and magnet exciting coil reverser control circuit, divide-shut brake magnet exciting coil forward conduction results from permanent magnet and realizes closing a floodgate in magnetic field in the same way, and divide-shut brake magnet exciting coil reverse-conducting results from permanent magnet opposing magnetic field and realizes separating brake, power supply is powered to single-chip microcomputer, magnet exciting coil forward ON-OFF control circuit and accumulator, and single-chip microcomputer is for controlling the break-make of magnet exciting coil forward ON-OFF control circuit and magnet exciting coil reverser control circuit, power supply exports direct current after rectifier bridge rectification and capacitor filtering process, the direct current exported connects bleeder circuit again, the dividing point of bleeder circuit is for dividing/switching voltage input end, single-chip microcomputer gets the voltage signal of this point/switching voltage input end as the control signal controlling magnet exciting coil forward ON-OFF control circuit break-make and magnet exciting coil reverser control circuit break-make, power supply starts, microprocessor detect to point/switching voltage input end export high level, the conducting of Single-chip Controlling magnet exciting coil forward ON-OFF control circuit, magnet exciting coil forward conduction realizes shutting-brake control, power supply is closed, point/voltage of switching voltage input end reduces to 0 rapidly, microprocessor detect to point/voltage drop of switching voltage input end, the conducting of Single-chip Controlling magnet exciting coil reverser control circuit, magnet exciting coil reverse-conducting realizes separating brake and controls, accumulator charges when power supply starts, and when power supply is closed, powers to single-chip microcomputer and divide-shut brake magnet exciting coil.

Adopt permanent magnetism sticking electronically controlled mode to realize all functions of electromagnetic treadle, structure be simple, parts are few, a few noiselessness, little and energy-saving effect is remarkable by grid voltage fluctuation influence.But there is certain defect in permanent magnet contactor: on the one hand, when the controllable devices (metal-oxide-semiconductor etc.) in control module or coil break down, or when permanent magnet contactor is in power failure state, contactor cannot normally disjunction, to main current supply circuit ability out of hand, great potential safety hazard is brought to the safety of industrial production and even whole power distribution network.On the other hand, in the event of a power failure, permanent magnet keeps tight closure, is manually difficult to make permanent magnet contactor separately, must switch on power and just can make contact separately, so all very inconvenience in the installation of permanent magnet contactor, debugging and test process.

Summary of the invention

For solving the deficiency that prior art exists; the object of the present invention is to provide a kind of permanent magnetism type contactor with disjunction protective device; under malfunction; disjunction can be forced; realize failure protection function, security performance is good, and when power-off; manual disjunction is simple and convenient, has installation, debugging and testing advantage easily.

For achieving the above object, the invention provides following technical scheme: a kind of permanent magnetism type contactor with disjunction protective device, comprise contactor body and control circuit, contactor body includes casing, permanent magnet operating device and contact apparatus, contact apparatus comprises moving contact and the fixed contact of corresponding matching, it is dynamic that permanent magnet operating device comprises control, the dynamic iron core of fixed contact deciliter, with the permanent magnetism coil mechanism of dynamic iron core corresponding matching, and drive dynamic, the reaction spring that fixed contact is separated, permanent magnetism coil mechanism includes bobbin, divide-shut brake magnet exciting coil, yoke and permanent magnet, it is characterized in that: described casing is also provided with forcible tripping device, forcible tripping device comprises can the pressure disjunction spring of deformation energy storage, force disjunction spring to have a distortion and drive release end, this distortion drives release end to be connected with can drive the dynamic of "on" position when forcing disjunction spring to release energy, cap is jumped in the pressure disjunction that fixed contact is separated, force disjunction to jump cap corresponding matching and have the latching device forcing disjunction spring for locking and release, latching device has can jump cap snap fit to realize the snap close end forcing disjunction spring latch at energy storage state with pressure disjunction, and drive snap close end and force disjunction to jump cap to thread off to discharge the trigger end forcing disjunction spring, the trigger end of latching device connects trigger equipment.

Permanent magnetism type contactor of the present invention, install forcible tripping device additional, in advance pressure disjunction spring is carried out energy storage, and disjunction will be forced to jump cap snap close by latching device, realize forcing disjunction spring latch at energy storage state, once occur that controllable devices (metal-oxide-semiconductor etc.) in control module or divide-shut brake magnet exciting coil break down, or when permanent magnet contactor is in power failure state, moving of contactor, fixed contact cannot normally disjunction situation, then can trigger the trigger end of latching device, make the snap close end of latching device jump cap with pressure disjunction to thread off, thus disjunction spring is forced in release, forcing the distortion of disjunction spring to drive release end to drive forces disjunction to jump cap action, force disjunction to jump cap and then drive dynamic, fixed contact disjunction, complete pressure separating brake, realize failure protection function.And adopt pressure disjunction spring to carry out energy storage, and jump cap with latching device coordinate with pressure disjunction, to locking and the release control of forcing disjunction spring, not only simple and compact for structure, and it is easy to operate, also by convenient manual operation to contactor sub-switching operation, facilitate the installation of permanent magnet contactor, debugging and test.

The present invention is set to further: described pressure disjunction spring is the stage clip of compressed energy-storage, stage clip is located between dynamic iron core and permanent magnetism coil mechanism, forcing disjunction to jump cap is connected on the distortion driving release end of pressure disjunction spring, forcing disjunction to jump cap is positioned at below dynamic iron core, and iron core can be moved move to open position by closing position by pushing tow when forcing disjunction spring to release energy, described pressure disjunction spring is relative to the other end that cap abuts one end is fixedly supported on casing with forcing disjunction to be jumped, force disjunction to jump cap and be provided with the spring energy-storage actuating arm driving and force the compression of disjunction jumping cap to force disjunction spring energy-storage.

By adopting technique scheme, adopt stage clip energy storage, and be located between dynamic iron core and permanent magnetism coil mechanism, and compact conformation, mounting arrangements is convenient, and force disjunction jumping cap to drive dynamic iron core to carry out pressure separating brake, reliable in action, forces disjunction spring one end to adopt fixed support mode, and the other end relies on forces disjunction jumping cap to drive energy storage, structure is simple, easy to operate.

The present invention is set to further: described pressure disjunction jumping cap is provided with at least two locks be uniformly distributed circumferentially and refers to, latching device comprises the latching device unit locked with each and refer to corresponding matching, latching device unit includes the pedestal be arranged on casing, and the snap close piece be pivoted on pedestal, tripping part, tripping part has trip positions and latched position, tripping part is provided with and forces disjunction to jump cap to be linked to drive tripping part to turn to the latch actuation portion of latched position from trip positions, and refer to lock the locking stopper section that locking/dropout coordinates, locking stopper section is located on the upper swing arm of tripping part, snap close piece is arranged on described tripping part rear, snap close piece comprises the rotatable lock dog that correspondence is journaled into swing arm position on tripping part, rotatable lock dog is extended with coupled arm downwards, the rotatable lock dog of described snap close piece be provided with for tripping part when trip positions against dropout bearing surface, for the lock-bit clamp that tripping part leans when latched position, and drive snap close piece rotation realize tripping part and lock the dropout trigger arm referring to thread off, the upper swing arm of described tripping part is provided with the lock-bit window snapped in for lock-bit clamp when being in trip positions for tripping part, be provided with when being in trip positions for tripping part on the upside of lock-bit window and lock-bit clamp is clasped, when being in latched position with lock-bit clamp against the baffle plate coordinated, the interlock torsion spring driving the upper swing arm of tripping part to be close to snap close piece is provided with between the bottom moved end and the bottom swing arm of snap close piece of described tripping part, interlock torsion spring is pivoted on pedestal, the side torsion spring arm of interlock torsion spring is connected to the bottom moved end of tripping part, the opposite side torsion spring arm of interlock torsion spring is connected on the coupled arm of snap close piece.

The latching device operation principle of said structure is: when forcing the compression of disjunction jumping cap to force disjunction spring to carry out energy storage, force disjunction to jump cap and drive latch actuation portion on tripping part, tripping part is made to turn to latched position from trip positions, force disjunction jumping cap to be locked to refer to coordinate with the locking of tripping part, pressure disjunction is jumped cap and be latched in pressure disjunction spring energy-storage state, in the process, tripping part is when rotating, the upper swing arm of tripping part departs from snap close piece gradually, on the upper swing arm of then tripping part, lock-bit clamp on snap close piece thrown off gradually by lock-bit window, drive interlock torsion spring simultaneously, interlock torsion spring provides the power driving snap close piece to rotate, but because lock-bit clamp on snap close piece is pinned by lock-bit window on tripping part, interlock torsion spring is by energy storage, along with the rotation of tripping part, and cross lock-bit clamp and lock-bit window gradually and to be clasped critical point, lock-bit clamp throws off lock-bit window, interlock torsion spring drives snap close piece to rotate, when tripping part turns to latched position, under the effect of interlock torsion spring, tripping part is close to snap close piece, realize the lock-bit clamp that tripping part is resisted against snap close piece, thus realize snap close piece tripping part is locked in latched position.When needing release to force the energy of disjunction spring, drive dropout trigger arm, snap close piece rotates, snap close piece drives interlock torsion spring, because initial stage tripping part is resisted against on the lock-bit clamp of snap close piece, tripping part cannot rotate, interlock torque spring energy store, when lock-bit clamp on snap close piece snaps in lock-bit window again, under interlock torsion spring drives, tripping part rotates, and by the dropout bearing surface stop limit on snap close piece, tripping part turns to trip positions from latched position, disjunction jumping cap and tripping part is forced to complete dropout, disjunction spring is forced to be released, simultaneously under the effect of interlock torsion spring, on snap close piece, lock-bit clamp is buckled in lock-bit window, namely snap close piece holds tripping part through lock-bit clamp.This latching device, reasonable in design is ingenious, compact conformation, is active in one's movements, safe and reliable.

The present invention is set to further: the back side of described tripping part is extended with pivot joint ear, the upper swing arm of tripping part is provided with lock and refers to latch-up window, described latch actuation portion is located at the latch actuation projection locked and refer in latch-up window, latch actuation projection refers to latch-up window in extending towards pressure disjunction jumping cap side and stretch out described lock, with the lock forcing disjunction to jump cap, described latch actuation projection refers to that counter stopper realizes driving tripping part to turn to latched position from trip positions, described locking stopper section is the block be positioned on the upside of latch-up window.

By adopting technique scheme, press down and force disjunction to jump cap to pressure disjunction spring energy-storage, lock finger pressure on pressure disjunction jumping cap is to the latch actuation projection on tripping part, tripping part is made to turn to latched position from trip positions, on snap close piece afterwards in latching device unit, tripping part is locked in latched position by lock-bit clamp, force disjunction jumping cap to be locked and refer to that the block be blocked on the upside of window stops locking, completes the energy storage forcing disjunction spring; It is simple and compact for structure, force disjunction jump cap and tripping part interlocking fit reliable.

The present invention is set to further: described latch actuation projection extends obliquely in jumping cap side towards pressure disjunction, and the downside that described lock refers to is provided with breach, and refers to that lower wall forms circular arc guide surface at lock.

By adopting technique scheme, lock refers to coordinate with latch actuation projection more reliable, and lock refers to that the rotation of driving tripping part is more reliable.

The present invention is set to further: described lock refers to that upper side is provided with the inclined-plane extending to lock finger tip, and this inclined-plane is for referring to finger tip from extending to lock obliquely away from lock finger tip one end.

By adopting technique scheme, throwing off latch actuation projection completes dropout, makes work more reliable and stable to facilitate lock to refer to.

The present invention is set to further: described trigger equipment includes magnetictrip and transmission mechanism, and the dynamic iron core of magnetictrip to drive with the trigger end of latching device through transmission mechanism and is connected; Described control circuit comprises normal disjunction control circuit and forces disjunction control circuit,

Described normal disjunction control circuit, for controlling divide-shut brake magnet exciting coil forward break-make and reverse break-make, thus realize the control of contactor divide-shut brake, there is in described normal disjunction control circuit point/switching voltage input end, point/the switching voltage signal that closes a floodgate of the exportable driving contactor of switching voltage input end, and drive the separating brake voltage signal of contactor separating brake;

Described pressure disjunction control circuit, for controlling the tripping coil break-make of magnetictrip, the tripping coil conducting of magnetictrip completes moving contact and fixed contact pressure dropout to drive the trigger end of latching device, described pressure disjunction control circuit comprises forces disjunction power supply circuits, divide-shut brake signal detection circuit, contact state testing circuit and trip coil ON-OFF control circuit, described pressure disjunction power supply circuits export direct current, disjunction power supply circuits are forced to be that trip coil ON-OFF control circuit is powered, there is in trip coil ON-OFF control circuit an on-off switch,

Described contact state testing circuit produces contact disjunction decision signal when contactor moving contact and fixed contact disconnect, contact disjunction decision signal is as controlling the pick-off signal that in trip coil ON-OFF control circuit, on-off switch disconnects, contact state testing circuit produces contact closure decision signal when contactor moving contact and fixed contact close, contact closure decision signal is as the Continuity signal triggering on-off switch conducting in trip coil ON-OFF control circuit, in the signal output part of contact state testing circuit and trip coil ON-OFF control circuit, the control end of on-off switch is connected to form signal operating circuit, signal circuit control switch is serially connected with in signal operating circuit, during described signal circuit control switch cut-off, signal operating circuit disconnects, when described signal operating circuit disconnects, in trip coil ON-OFF control circuit, on-off switch is in off-state,

The control end of described signal circuit control switch is connected with the signal output part of divide-shut brake signal detection circuit, described divide-shut brake signal detection circuit receives the output signal of described point/switching voltage input end, divide-shut brake signal detection circuit controls the cut-off of described signal circuit control switch when receiving the switching voltage signal of described point/switching voltage input end, triggers the conducting of described signal circuit control switch when divide-shut brake signal detection circuit receives the separating brake voltage signal of described point/switching voltage input end.

Under technique scheme, realize the automatic trigging control of forcible tripping device, control more convenient, its course of work is: normal disjunction control circuit point/switching voltage input end export switching voltage signal time, control the cut-off of described signal circuit control switch, then signal operating circuit disconnects, the output signal of contact state testing circuit cannot arrive on-off switch in trip coil ON-OFF control circuit, in trip coil ON-OFF control circuit, on-off switch is in off-state, trip coil ON-OFF control circuit is in disconnection, and magnetictrip does not work; Normal disjunction control circuit point/switching voltage input end export separating brake voltage signal time, divide-shut brake signal detection circuit trigger signal circuit controls switch conduction, signal work circuit turn-on; The dynamic and static contact state of contact state testing circuit to contactor detects, during the normal disjunction of dynamic and static contact, contact state testing circuit sends contact disjunction decision signal, control on-off switch in trip coil ON-OFF control circuit to disconnect, trip coil ON-OFF control circuit is in disconnection, and magnetictrip does not work; When the dynamic and static contact of contactor is in closure state, contact state testing circuit sends contact closure decision signal, and now signal operating circuit is in conducting, contact closure decision signal arrives the control end of on-off switch in trip coil ON-OFF control circuit through signal operating circuit, trigger on-off switch conducting in trip coil ON-OFF control circuit, the conducting of trip coil ON-OFF control circuit, magnetictrip works, realize the trigger end of the latching device driving forcible tripping device, pressure disjunction is carried out to contactor.Realize the pressure disjunction of contactor, ensure that contactor is safe and reliable.

The present invention is set to further: described divide-shut brake signal detection circuit includes bleeder circuit one, is in series with the bleeder circuit two of optical coupler, delay capacitor and voltage comparator,

The input of described bleeder circuit one connects the output forcing disjunction power supply circuits, first output of described bleeder circuit one connects the in-phase input end of voltage comparator, second output head grounding of bleeder circuit one, bleeder circuit one is for the in-phase input end dividing potential drop of voltage comparator, the in-phase input end that bleeder circuit one is voltage comparator provides reference voltage

First output of described bleeder circuit two connects delay capacitor one end, the common port that bleeder circuit 2 first output is connected with delay capacitor is connected on the inverting input of voltage comparator, second output of bleeder circuit two connects the other end of delay capacitor and ground connection, bleeder circuit two is for the inverting input dividing potential drop of voltage comparator, the inverting input that bleeder circuit two is voltage comparator provides voltage to be measured

The voltage to be measured of inverting input and the reference voltage of in-phase input end compare by described voltage comparator, the output low level signal when the voltage to be measured of described voltage comparator inverting input is voltage to be measured higher than the high-voltage value of described reference voltage level, the described signal circuit control switch cut-off when voltage comparator output low level signal, export when the voltage to be measured of described voltage comparator inverting input is voltage to be measured lower than the low voltage value of described reference voltage level as high level signal, the conducting of described signal circuit control switch is triggered when voltage comparator exports high level signal,

Described optical coupler is connected on the input of bleeder circuit two and forces between disjunction power supply circuits output, optical coupler be used for according to point/output signal of switching voltage input end controls the input of bleeder circuit two and forces break-make between disjunction power supply circuits output

Optical coupler receives point/the switching voltage signal of switching voltage input end time, control the input of bleeder circuit two and force conducting between disjunction power supply circuits output, and then described delay capacitor is charged, and the voltage to be measured of described voltage comparator inverting input input is described high-voltage value voltage to be measured;

Optical coupler receives point/the separating brake voltage signal of switching voltage input end time, control the input of bleeder circuit two and force the separated of disjunction power supply circuits output, and then described delay capacitor discharges and is formed as the default delay time that described voltage comparator inverting input provides described high-voltage value voltage to be measured, after default delay time, the inverting input of described voltage comparator inputs described low voltage value voltage to be measured.

It is simple that above-mentioned divide-shut brake signal detection circuit has circuit structure, easily realizes, good stability, controls reliably to facilitate.

The present invention is set to further: described contact state testing circuit includes contactor auxiliary contact, amplifier subtraction circuit, bleeder circuit three and detects resistance, described contactor auxiliary contact and probe of contactor synchronizing close and disconnection,

On the in-phase input end that described detection resistance two ends are connected to described amplifier subtraction circuit and inverting input, if the tie point that detection resistance is connected with described amplifier subtraction circuit in-phase input end is homophase tie point, described amplifier subtraction circuit is used for converting the differential voltage detecting resistance two ends to voltage to earth, if the tie point that detection resistance is connected with described amplifier subtraction circuit inverting input is anti-phase tie point

The input of described bleeder circuit three connects the output forcing disjunction power supply circuits, first output of described bleeder circuit three is connected on described homophase tie point, second output of bleeder circuit three is connected with described auxiliary contact one end and ground connection, the other end of described auxiliary contact is connected on described anti-phase tie point

When auxiliary contact disconnects, described detection resistance both end voltage is 0, the output correspondence of described amplifier subtraction circuit exports contact and disconnects decision signal, it is low level that contact disconnects decision signal, resistance two ends coating-forming voltage is detected when auxiliary contact closes, the output correspondence of described amplifier subtraction circuit exports contact closure decision signal, and contact closure decision signal is high level.

The above-mentioned contact state testing circuit course of work is, when moving contact and the fixed contact disjunction state of contactor, contactor auxiliary contact also simultaneous break, the voltage detecting resistance two ends is 0, the output correspondence of amplifier subtraction circuit exports contact and disconnects decision signal, be low level, when moving contact and the fixed contact closure state of contactor, contactor auxiliary contact is also synchronously in closure state, contactor auxiliary contact, bleeder circuit, detect resistance and form loop, detect resistance two ends coating-forming voltage, the output correspondence of amplifier subtraction circuit exports contact closure decision signal, be high level, this circuit structure is simple, good stability, reliable operation.

The present invention is set to further: described pressure disjunction power supply circuits are the line voltage feed circuit being taken to contactor dynamic/static contact power source, force disjunction power supply circuits to export direct current after step-down, rectification, filtering, force disjunction power supply circuits also as the working power of divide-shut brake signal detection circuit, contact state testing circuit.Under adopting the program, pressure disjunction control circuit is the working power of trip coil control circuit, divide-shut brake signal detection circuit, contact state testing circuit, disjunction control circuit is forced to be taken on contactor dynamic/static contact, power good is reliable, thus ensures whole pressure disjunction control circuit reliable operation.

Below in conjunction with accompanying drawing, the invention will be further described.

Accompanying drawing explanation

Fig. 1 is specific embodiment of the invention permanent magnetism type contactor "on" position structural representation;

Fig. 2 is that specific embodiment of the invention permanent magnetism type contactor forces gate-dividing state structural representation;

Fig. 3 is specific embodiment of the invention permanent magnet operating device, forces disjunction spring and force disjunction to jump the axial explosive view decomposed of shade;

Fig. 4 is the structural representation of specific embodiment of the invention forcible tripping device when forcing disjunction spring energy-storage state;

Fig. 5 is the structural representation of specific embodiment of the invention forcible tripping device when forcing disjunction spring release condition;

Fig. 6 is the explosive view that the specific embodiment of the invention is forced disjunction spring, forced disjunction jumping cap and casing axially to decompose;

Fig. 7 is specific embodiment of the invention snap close piece structural representation;

Fig. 8 is specific embodiment of the invention tripping part structural representation;

Fig. 9 is specific embodiment of the invention control circuit theory diagram;

Figure 10 is the specific embodiment of the invention normal disjunction control circuit figure;

Figure 11 is that the specific embodiment of the invention forces disjunction control circuit one;

Figure 12 is that the specific embodiment of the invention forces disjunction control circuit two;

Figure 13 is specific embodiment of the invention divide-shut brake signal detection circuit equivalent circuit one;

Figure 14 is specific embodiment of the invention divide-shut brake signal detection circuit equivalent circuit two.

Embodiment

See accompanying drawing 1 ~ 8, a kind of permanent magnetism type contactor with disjunction protective device disclosed by the invention, comprise contactor body and control circuit, contactor body includes casing 1, permanent magnet operating device 2 and contact apparatus 3, contact apparatus 3 comprises moving contact 31 and the fixed contact 32 of corresponding matching, permanent magnet operating device 2 comprises the dynamic iron core 21 controlling dynamic and static contact 31,32 deciliters, with the permanent magnetism coil mechanism 22 of dynamic iron core 21 corresponding matching, and the reaction spring (not shown) driving dynamic and static contact to be separated; Permanent magnetism coil mechanism 22 includes bobbin 221, divide-shut brake magnet exciting coil 222, yoke 223 and permanent magnet 224.Described casing 1 is also provided with forcible tripping device 4, forcible tripping device 41 comprises can the pressure disjunction spring 41 of deformation energy storage, force disjunction spring 41 to have a distortion and drive release end 411, this distortion drives release end 411 to be connected with can drive the dynamic of "on" position when forcing disjunction spring 41 to release energy, fixed contact 31, cap 42 is jumped in the 32 pressure disjunctions be separated, force disjunction to jump cap 42 corresponding matching and have the latching device 43 forcing disjunction spring 41 for locking and release, latching device 43 has can jump cap 42 snap fit to realize forcing disjunction spring 41 to be latched in the snap close end of energy storage state with pressure disjunction, and drive snap close end and force disjunction to jump cap 42 to thread off to discharge the trigger end forcing disjunction spring 41, the trigger end of latching device 43 connects trigger equipment 44.

In this specific embodiment, described pressure disjunction spring 41 is the stage clip 41 of compressed energy-storage, stage clip is helical spring, stage clip 41 is located between dynamic iron core 21 and permanent magnetism coil mechanism 22, forcing disjunction to jump cap 42 is connected on the distortion driving release end 411 of pressure disjunction spring 41, forcing disjunction to jump cap 42 is positioned at below dynamic iron core 21, and iron core 21 can be moved move to open position by closing position by pushing tow when forcing disjunction spring 41 to release energy, when namely forcing disjunction spring to be in energy storage state, below that cap is positioned at when dynamic iron core is in closing position (forces disjunction to jump cap directly to abut with dynamic iron core to force disjunction to be jumped, also certain interval stroke can be had), when forcing the release of disjunction spring, force disjunction to jump crown and push away the dynamic iron core being in closing position, dynamic iron core is made to move to open position from closing position.Adopt stage clip energy storage, and be located between dynamic iron core and permanent magnetism coil mechanism, its compact conformation, mounting arrangements is convenient, and forces disjunction jumping cap to drive dynamic iron core to carry out pressure separating brake, reliable in action.As feasible technical scheme, force disjunction spring can be extension spring, forcing disjunction to jump cap can be connected with the dynamic installing rack that touches of moving contact the design realizing driving moving contact and fixed contact disjunction.

Wherein, casing 1 is provided with barrel-shaped spring base 11, spring cavity 110 is provided with in spring base 11, spring cavity 110 is towards dynamic iron core 21 one end open, disjunction spring 41 is forced to be assemblied in spring cavity 110, disjunction spring 41 one end is forced to be supported on the bottom of spring cavity 110, namely on casing 1, force the other end of disjunction spring 41 to jump cap 42 with pressure disjunction to abut, force disjunction to jump cap 42 and be supported on spring cavity 110 openend through forcing disjunction spring 41, disjunction is forced to jump cap 42 orientation assemble in spring cavity 110 slidably, jump on cap 42 in pressure disjunction and be provided with axial centre positioning through hole, guide post 12 is connected with in dynamic iron core 21 lower end, guide post 12 through spring cavity 110 and in bobbin 221 mesopore being inserted into permanent magnetism coil mechanism 22 slidably, forcing disjunction to jump cap 42 is sleeved on guide post 12 through axial positioning through hole, disjunction jumping cap 42 is forced to be provided with the spring energy-storage actuating arm 421 driving and force disjunction jumping cap 42 to compress the energy storage of pressure disjunction spring 41, spring base 11 sidewall is provided with open slot 111, forces disjunction to jump cap 42 upper spring energy storage actuating arm 421 and stretch out from the open slot 111 of spring base 11.Then pull and force disjunction to jump cap 42 upper spring energy storage actuating arm 421, pressure disjunction jumping cap 42 is compressed and forces disjunction spring 41 to complete energy storage, force disjunction to jump the snap close end locking of cap 42 and latching device 43, realize forcing disjunction spring 41 to be latched in energy storage state.There is structure simple, easy to operate, and having stable behavior advantage reliably.Certainly as the technical scheme that the present invention is feasible, the energy storage of disjunction spring is forced the relative other end arranges specialized agency to carry out the energy storage of pressure disjunction spring-compressed by driving to discharge to hold with distortion, but its design and operation exist inconvenience, therefore the preferential structural design adopting this specific embodiment.

In this specific embodiment, be provided with at described pressure disjunction jumping cap 42 at least two locks be uniformly distributed circumferentially and refer to 422, latching device 43 comprises the latching device unit locked with each and refer to 422 corresponding matching, latching device unit includes the pedestal 433 be arranged on casing 1, and is pivoted on snap close piece 434, the tripping part 435 on pedestal 433, tripping part 434 has trip positions and latched position, tripping part 435 is provided with and forces disjunction to jump cap 42 to be linked to drive tripping part 435 to turn to the latch actuation portion 4351 of latched position from trip positions, and refer to lock the locking stopper section 4352 that 422 locking/dropouts coordinate, locking stopper section 4352 is located on the upper swing arm of tripping part 435, snap close piece 434 is arranged on described tripping part 435 rear, snap close piece 434 comprises the rotatable lock dog 4344 that correspondence is journaled into swing arm position on tripping part 435, rotatable lock dog 4344 is extended with the coupled arm 4345 driving it to rotate downwards, the rotatable lock dog 4344 of described snap close piece 434 be provided with for tripping part 435 when trip positions against dropout bearing surface 4341, for the lock-bit clamp 4342 that tripping part 435 leans when latched position, and drive snap close piece 434 rotation realize tripping part 435 and lock the dropout trigger arm 4343 referring to 422 dropouts, dropout trigger arm 4343 one end is fixed on snap close piece 434, dropout trigger arm 4343 other end is trigger end, the upper swing arm of described tripping part 435 is provided with the lock-bit window 4353 snapped in for lock-bit clamp 4342 when being in trip positions for tripping part 435, be provided with when being in trip positions for tripping part 435 on the upside of lock-bit window 4353 and lock-bit clamp 4342 is clasped, when being in latched position with lock-bit clamp 4342 against the baffle plate 4354 coordinated, the interlock torsion spring 437 driving the upper swing arm of tripping part 435 to be close to rotatable lock dog 4344 is provided with between the bottom moved end and the coupled arm 4345 of snap close piece 434 of described tripping part 435, interlock torsion spring 437 is pivoted on pedestal 433, the side torsion spring arm of interlock torsion spring 437 is connected to the bottom moved end of tripping part 435, the opposite side torsion spring arm of interlock torsion spring 437 is connected on the coupled arm 4345 of snap close piece 434.

The latching device operation principle of said structure is: as Fig. 4, when forcing the compression of disjunction jumping cap 42 to force disjunction spring 41 to carry out energy storage, force disjunction to jump cap 42 and drive latch actuation portion 4351 on tripping part 435, tripping part 435 is made to turn to latched position (as Fig. 4) from trip positions (as Fig. 5), force disjunction to jump cap 42 finger 422 of locking to coordinate with tripping part 435 locking, pressure disjunction is jumped cap 42 and be latched in pressure disjunction spring 41 energy storage state, in the process, tripping part 435 is when rotating, the upper swing arm of tripping part 435 departs from snap close piece 434 gradually, on the upper swing arm of then tripping part 435, lock-bit window 4353 throws off lock-bit clamp 4342 on snap close piece 434 gradually, drive interlock torsion spring 437 simultaneously, interlock torsion spring 437 provides the power driving snap close piece 434 to rotate, but because lock-bit clamp 4342 on snap close piece 434 is pinned by baffle plate 4354 above lock-bit window on tripping part 435, interlock torsion spring 437 is by energy storage, along with the rotation of tripping part 435, and cross lock-bit clamp 4342 and baffle plate 4354 gradually and to be clasped critical point, lock-bit clamp 4342 throws off baffle plate 4354, exit lock-bit window 4353, interlock torsion spring 437 drives snap close piece 434 to rotate, when tripping part 435 turns to latched position, unclamp and force disjunction to jump cap 42, under the effect of interlock torsion spring 437, tripping part 435 is close to snap close piece 434, realize the lock-bit clamp 4342 that tripping part 435 is resisted against snap close piece 434, thus realize snap close piece 434 tripping part 434 is locked in latched position (as Fig. 4 and Fig. 1).When needing release to force the energy of disjunction spring 41, drive dropout trigger arm 4343, snap close piece 434 rotates, snap close piece 434 drives interlock torsion spring 437, because initial stage tripping part 435 is resisted against on the lock-bit clamp 4342 of snap close piece 434, tripping part 435 cannot rotate, the energy storage of interlock torsion spring 437, when lock-bit clamp 4342 on snap close piece 434 snaps in lock-bit window 4353 again, under interlock torsion spring 437 drives, tripping part 435 rotates, and by dropout bearing surface 4341 stop limit on snap close piece, tripping part 435 turns to trip positions from latched position, force disjunction to jump cap 42 and complete dropout with tripping part 435, disjunction spring 41 is forced to be released, simultaneously under the effect of interlock torsion spring 437, on snap close piece 434, lock-bit clamp 4342 is buckled in lock-bit window 4353, namely snap close piece 434 holds tripping part 435 through lock-bit clamp 4342.This latching device, reasonable in design is ingenious, compact conformation, safe and reliable.

The back side of described tripping part 435 is extended with pivot joint ear 4355, the pivot joint ear 4355 of tripping part 435 is rotatable on the base 11 through pivot dress, the upper swing arm of tripping part 435 is provided with lock and refers to latch-up window 4356, described latch actuation portion 4351 is for being located at the latch actuation projection 4351 locked and refer in latch-up window 4356, latch actuation projection 4351 refers to latch-up window 4356 in extending towards pressure disjunction jumping cap 42 side and stretch out described lock, with the lock forcing disjunction to jump cap 42, described latch actuation projection 4351 refers to that 422 counter stopper realize driving tripping part 435 to turn to latched position from trip positions, described locking stopper section 4352 is for being positioned at the block 4352 on the upside of latch-up window 4356.Like this, press down and force disjunction to jump cap 42 to the energy storage of pressure disjunction spring 41, tripping part 435 leans against on snap close piece 434, the lock forcing disjunction to be jumped on cap 42 refers to that 422 can avoid block 4352 on tripping part 435, and the latch actuation projection 4351 pressed on tripping part 435, tripping part 435 is made to turn to latched position from trip positions, on snap close piece 434, tripping part 435 is locked in latched position by lock-bit clamp 4342, disjunction is forced to jump cap 42 under the effect forcing disjunction spring 41 afterwards, forcing disjunction to jump cap 42 finger 422 of locking is stuck on the block 4352 of snap close piece 435, force disjunction to jump cap 42 block 4352 that finger 422 is blocked on the upside of window 4356 of locking and stop locking, complete the energy storage forcing disjunction spring, it is simple and compact for structure, force disjunction jump cap and tripping part interlocking fit reliable.

Snap close piece can better be driven for making lock finger pressure to rotate to latch actuation projection, described latch actuation projection 4351 extends obliquely in jumping cap 422 side towards pressure disjunction, described lock refers to that the downside of 422 is provided with breach 4221, and refers to that 422 lower wall form circular arc guide surface 4222 at lock.When lock finger pressure is to latch actuation projection, circular arc guide surface has guiding latch actuation projection and slides along it, makes snap close piece rotate more smooth and easy reliable rotation.Wherein, refer to that 422 upper sides are provided with the inclined-plane 4223 extending to lock and refer to 422 finger tips at described lock, away from lock, this inclined-plane 4223 is for certainly referring to that 422 finger tip one end extend to lock obliquely and refer to 422 finger tips.Like this when snap close piece unlocks tripping part, the block of snap close piece can be thrown off lock more smoothly and be referred to, makes work more reliable and stable.

As shown in Fig. 9 ~ 14, permanent magnetism type contactor is furnished with control circuit, and control circuit includes normal disjunction control circuit 5 and forces disjunction control circuit 6; Normal disjunction control circuit, for controlling divide-shut brake magnet exciting coil forward break-make and reverse break-make, thus realize the control of contactor divide-shut brake, there is in described normal disjunction control circuit 5 point/switching voltage input end A, point/the switching voltage signal that closes a floodgate of the exportable driving contactor of switching voltage input end A, and drive the separating brake voltage signal of contactor separating brake.

Described normal disjunction control circuit 5 comprises divide-shut brake power supply circuits 5-1, current rectifying and wave filtering circuit 5-2, voltage detecting circuit 5-3, accumulator 5-4, AVR single chip and contactor coil ON-OFF control circuit 5-5; Wherein, divide-shut brake power supply circuits 5-1 adopts now conventional civil power (alternating current of 220V); Described contactor coil ON-OFF control circuit 5-5 comprises closing switch control circuit and separating brake ON-OFF control circuit; Closing switch control circuit realizes contactor coil forward conduction and disconnects controlling, and realizes shutting-brake control; Separating brake ON-OFF control circuit realizes contactor coil reverse-conducting and disconnects controlling, and realizes separating brake and controls; Described divide-shut brake power supply circuits 5-1 is that accumulator 5-4 powers and charges, and wherein, current rectifying and wave filtering circuit 5-2 comprises rectifier bridge D2 and filter capacitor C3, the 220V alternating current that divide-shut brake power supply circuits 5-1 provides is carried out rectification and filtering becomes direct current; Voltage detecting circuit 5-3 comprises divider resistance R4 and divider resistance R6, divider resistance R4 is connected the output of current rectifying and wave filtering circuit 5-2 after connecting with divider resistance R6, the dividing point formed between divider resistance R4 and divider resistance R6 is for dividing/switching voltage input end A.Then divide-shut brake power supply circuits are powered when closing a floodgate, point/switching voltage input end A is switching voltage signal (high level), divide-shut brake power supply circuits are not powered when separating brake, point/switching voltage input end A voltage reduces to 0 rapidly, is separating brake voltage signal.In AVR single chip, pin PB3 to connect point/switching voltage input end A, for receiving point/and the separating brake voltage signal of switching voltage input end A and switching voltage signal.Described closing switch control circuit comprises metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q3, in AVR single chip, pin PB1 control metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q3 are connected on divide-shut brake magnet exciting coil 222 two ends and are attempted by current rectifying and wave filtering circuit 5-2 output formation switch control circuit; In AVR single chip, pin PB3 to receive point/switching voltage the signal of switching voltage input end A, pin PB1 is become high level by AVR single chip, conducting metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3, the divide-shut brake magnet exciting coil 222 of contactor is flowed directly into through rectified electric current, the sense of current is as arrow a direction in figure, divide-shut brake magnet exciting coil 222 forms magnetic field and is subject to magnetic force with the dynamic iron core 21 of the consistent contactor of permanent magnet 224 magnetic direction and moves downward, moving contact 31 and fixed contact 32 is driven to close, after postponing tens of second, complete combined floodgate; Pin PB1 is become low level by AVR single chip, and metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q3 end, and the magnetic force that contactor relies on permanent magnet 224 to produce remains closed.

Described accumulator 5-4 comprises storage capacitor C6 and storage capacitor C7; Storage capacitor C6 as separating brake ON-OFF control circuit power supply, storage capacitor C6 one end ground connection, storage capacitor C6 other end connecting dividing lock power supply circuits output and diode D6 negative electrode, the output of diode D6 anode connecting dividing lock power supply circuits; Also connect between storage capacitor C6 with diode D6 negative electrode an electric capacity C5; Described separating brake ON-OFF control circuit comprises metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q4, the pin PB0 of AVR single chip controls metal-oxide-semiconductor Q2, the pin PB2 of AVR single chip controls metal-oxide-semiconductor Q4, the switch control circuit of the reverse break-make of metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q4, electric capacity C5, divide-shut brake magnet exciting coil and storage capacitor C6 series connection formation control divide-shut brake magnet exciting coil 222; Storage capacitor C7 is as AVR single chip power supply; Storage capacitor C7 one end ground connection, the storage capacitor C7 other end connects AVR single chip pin VCC, diode D7 is in series with between storage capacitor C7 and divide-shut brake power supply circuits 5-1 output, diode D7 anode connecting dividing lock power supply circuits 5-1 output, charge and power to AVR single chip to after diode D7 during combined floodgate power supply circuits 5-1 output output current storage capacitor C7, when the 5-1 power-off of divide-shut brake power supply circuits, storage capacitor C7 can only export to AVR single chip and powers; NPN type triode Q5 is in series with between storage capacitor C7 and diode D7, NPN type triode Q5 emitter connects the pin VCC of storage capacitor C7 and AVR single chip, NPN type triode Q5 collector electrode connects diode D7 negative electrode, NPN type triode Q5 base stage contact resistance R10, the resistance R10 other end is connected between storage capacitor C6 and electric capacity C5 and between diode D7 and NPN type triode Q5 collector electrode.After electric capacity C5 and storage capacitor C6 is full of, triggers NPN type triode Q5 conducting, realize the charging of storage capacitor C7.When separating brake, divide-shut brake power supply circuits 5-1 power-off, storage capacitor C7 powers to AVR single chip, AVR single chip pin PB3 detects separating brake voltage signal, the pin PB0 of AVR single chip and pin PB2 exports high level, control metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q4 conducting, storage capacitor C6 is energized to divide-shut brake magnet exciting coil 222, the sense of current is as arrow b direction in figure, the electromagnetic field that divide-shut brake magnet exciting coil 222 is formed and the magnetic direction that produces of permanent magnet 224 are to instead, the dynamic iron core 21 of contactor drives moving contact and fixed contact disjunction under the effect of reaction spring, completes separating brake.

For the Based Intelligent Control of adaptive forcible tripping device, normal disjunction control circuit 5 basis installs additional and forces disjunction control circuit 6; Wherein, described trigger equipment 44 comprises magnetictrip 441 and transmission mechanism, the dynamic iron core of magnetictrip 441 to drive with the trigger end of latching device 43 through transmission mechanism and is connected, and the tripping coil conducting of magnetictrip 411 is to drive the trigger end of latching device 43 to complete moving contact and fixed contact is forced to thread off; In this specific embodiment, transmission mechanism comprises cross bar 442, the middle part of cross bar 442 is fixed on the dynamic iron core of magnetictrip 441, the two ends of cross bar 442 are erected at above the dropout trigger arm 4343 of snap close piece 43 respectively, the dynamic iron core of magnetictrip drives cross bar descending, presses down the dropout trigger arm of snap close piece, snap close piece is rotated, and realizing snap close piece unblock tripping part, tripping part is jumped cap with pressure disjunction and is threaded off.

Described pressure disjunction control circuit is for controlling the tripping coil break-make of magnetictrip, described pressure disjunction control circuit comprises forces disjunction power supply circuits 6-1, divide-shut brake signal detection circuit 6-2, contact state testing circuit 6-3 and trip coil ON-OFF control circuit 6-4, described pressure disjunction power supply circuits 6-1 exports direct current, disjunction power supply circuits 6-1 is forced to be that trip coil ON-OFF control circuit 6-4 powers, there is in trip coil ON-OFF control circuit 6-4 an on-off switch Q7, be metal-oxide-semiconductor Q7 in this specific embodiment, namely the electrode input end VCC3 of trip coil ON-OFF control circuit 6-4 connects and forces the output of disjunction power supply circuits 6-1 (have in pressure disjunction power supply circuits in figure corresponding identify with VCC3), trip coil ON-OFF control circuit 6-1 electrode input end VCC3 and the metal-oxide-semiconductor Q7 that connects between trip coil, trip coil other end ground connection, described contact state testing circuit 6-3 is for detecting contactor moving contact and fixed contact divides/conjunction state, described contact state testing circuit 6-3 produces contact disjunction decision signal when contactor moving contact and fixed contact disconnect, and contact disjunction decision signal is as controlling the pick-off signal that in trip coil ON-OFF control circuit 6-4, on-off switch Q7 disconnects, contact state testing circuit 6-3 produces contact closure decision signal when contactor moving contact and fixed contact close, and contact closure decision signal is as the Continuity signal triggering on-off switch Q7 conducting in trip coil ON-OFF control circuit 6-4, in the signal output part of contact state testing circuit 6-3 and trip coil ON-OFF control circuit 6-4, the control end of on-off switch Q7 is connected to form signal operating circuit, signal circuit control switch Q6 is serially connected with in signal operating circuit, in this specific embodiment, signal circuit control switch Q6 is metal-oxide-semiconductor, described signal operating circuit disconnects when signal circuit control switch Q6 ends, when signal operating circuit disconnects, described on-off switch Q7 ends because receiving the output signal of contact state testing circuit 6-3, and trip coil ON-OFF control circuit 6-4 disconnects, and release does not work, the control end of described signal circuit control switch Q6 is connected with the signal output part of divide-shut brake signal detection circuit 6-2, described divide-shut brake signal detection circuit 6-2 receives the output signal of described point/switching voltage input end A, divide-shut brake signal detection circuit 6-2 controls described signal circuit control switch Q6 when receiving the switching voltage signal of described point/switching voltage input end A to be ended, and triggers described signal circuit control switch Q6 conducting when divide-shut brake signal detection circuit 6-2 receives the separating brake voltage signal of described point/switching voltage input end A.

The course of work is: normal disjunction control circuit point/switching voltage input end A export switching voltage signal time, divide-shut brake signal detection circuit 6-2 exports combined floodgate decision signal, signal circuit control switch Q6 ends, signal operating circuit off-state, the output signal of contact state testing circuit 6-3 cannot arrive the control end of on-off switch Q7, on-off switch Q7 ends, and trip coil ON-OFF control circuit does not work, and magnetictrip does not work.

In this specific embodiment, described divide-shut brake signal detection circuit 6-2 includes bleeder circuit one 6-2-1, is in series with optical couplerbleeder circuit two 6-2-2 of U2, and voltage comparator C, the input of described bleeder circuit one 6-2-1 connects the output forcing disjunction power supply circuits 6-1, first output of described bleeder circuit one 6-2-1 connects the in-phase input end of voltage comparator C, second output head grounding of bleeder circuit one 6-2-1, bleeder circuit one 6-2-1 is used for the in-phase input end dividing potential drop of voltage comparator C, and bleeder circuit one 6-2-1 provides reference voltage for the in-phase input end of voltage comparator C, this specific embodiment, described bleeder circuit one 6-2-1 is in series by resistance R19 and resistance R20, resistance R19 one end is connect the input forcing disjunction power supply circuits 6-1 output, resistance R19 and resistance R20 tie point are dividing point, also be first output of bleeder circuit one 6-2-1, resistance R20 one end contact resistance R19, the resistance R20 other end is the second output of ground connection, and on resistance R20, an electric capacity C11 in parallel forms protection, first output of described bleeder circuit two 6-2-2 connects delay capacitor C12 one end, the common port that bleeder circuit two 6-2-2 first output is connected with delay capacitor C12 is connected on the inverting input of voltage comparator C12, second output of bleeder circuit two 6-2-2 connects the other end of delay capacitor C12 and ground connection, bleeder circuit two 6-2-2 is used for the inverting input dividing potential drop of voltage comparator C, and the inverting input that bleeder circuit two 6-2-2 is voltage comparator C provides voltage to be measured, the voltage to be measured of inverting input and the reference voltage of in-phase input end compare by described voltage comparator C, the output low level signal when the voltage to be measured of described voltage comparator C inverting input is voltage to be measured higher than the high-voltage value of described reference voltage level, when voltage comparator C output low level signal, described signal circuit control switch Q6 ends, export when the voltage to be measured of described voltage comparator C inverting input is voltage to be measured lower than the low voltage value of described reference voltage level as high level signal, described signal circuit control switch Q6 conducting is triggered when voltage comparator C exports high level signal,

Described optical coupler U2 is connected on the input of bleeder circuit two 6-2-2 and forces between disjunction power supply circuits 6-1 output, optical coupler U2 be used for according to point/output signal of switching voltage input end A controls the input of bleeder circuit two 6-2-2 and forces break-make between disjunction power supply circuits 6-1 output; Optical coupler U2 receives point/the switching voltage signal of switching voltage input end A time, control the input of bleeder circuit two 6-2-2 and force conducting between disjunction power supply circuits 6-1 output, and then described delay capacitor C12 is charged, and the voltage to be measured of described voltage comparator C inverting input input is described high-voltage value voltage to be measured; Optical coupler U2 receives point/the separating brake voltage signal of switching voltage input end A time, control the input of bleeder circuit two 6-2-2 and force the separated of disjunction power supply circuits 6-1 output, and then described delay capacitor C12 discharges and is formed as described voltage comparator C inverting input and provides the default delay time of described high-voltage value voltage to be measured (being 2 seconds in this specific embodiment), after default delay time, the inverting input of described voltage comparator C inputs described low voltage value voltage to be measured.

This specific embodiment, optical coupler U2 comprises light-receiving device and photophore; Described bleeder circuit two 6-2-2 is in series by resistance R22 and resistance R23, and resistance R22 one end connects optical couplerthe light-receiving device (this end of resistance R22 is the input of bleeder circuit two 6-2-2) of U2, the anti-phase input pin of resistance R22 other end contact resistance R23, voltage comparator C, this end of delay capacitor C12(resistance R22 are the first output of bleeder circuit two); Resistance R23 one end contact resistance R22, resistance R23 other end ground connection (this end of resistance R23 is the second output); Delay capacitor C12 one end connects the anti-phase input pin of voltage comparator C, delay capacitor C12 other end ground connection; optical couplerthe light-receiving device of U2 connects the output forcing disjunction power supply circuits 6-1, optical couplerwhether U2 controls to force disjunction power supply circuits 6-1 to power to bleeder circuit two 6-2-2; The photophore of described optical coupler U2 connects point/and the output of switching voltage input end A, voltage comparator C exports separating brake decision signal (high level) or combined floodgate decision signal (low level).Point/switching voltage input end A export for switching voltage signal time, point/switching voltage input end A export be high level, the photophore of optical coupler U2 is luminous, the light-receiving device conducting of optical coupler U2, then force disjunction power supply circuits 6-1 power input and the conducting of bleeder circuit two 6-2-2 input, disjunction power supply circuits 6-1 power supply is forced in the inverting input access of voltage comparator C, power on the one hand the inverting input of voltage comparator C, form high-voltage value voltage to be measured, charge on the other hand delay capacitor C12, now, the inverting input voltage to be measured of voltage comparator C is higher than the reference voltage of positive input, voltage comparator C exports as combined floodgate decision signal (low level), metal-oxide-semiconductor Q6 ends, point/switching voltage input end defeated A is when going out for separating brake voltage signal, point/voltage of switching voltage input end A reduces to 0, the photophore of optical coupler U2 is not luminous, the light-receiving device cut-off of optical coupler U2, disjunction power supply circuits 6-1 power input and bleeder circuit two 6-2-2 input is then forced to disconnect, the inverting input of voltage comparator C disconnects with forcing disjunction power supply circuits 6-1 power supply, now delay capacitor C12 discharges, delay capacitor C12 powers to the inverting input of voltage comparator C, realize voltage comparator C time delay and export separating brake decision signal (high level), preset delay time and determine that (in this specific embodiment, delay capacitor C12 is 1 μ F by delay capacitor C12, default delay time is 2 seconds), treat that the anti-phase input terminal voltage of the voltage comparator C that delay capacitor C12 supplies is less than the positive input voltage of voltage comparator C, voltage comparator C exports separating brake decision signal (high level), metal-oxide-semiconductor Q6 conducting, circuit structure is simple, easy realization, it is reliable convenient to control.

As the scheme that the present invention is feasible, as shown in figure 13, divide-shut brake signal detection circuit 6-2 comprises optical coupler U2, PMOS Q8, NMOS tube Q9 and delay capacitor C12, optical coupler U2 comprises photophore and light-receiving device, PMOS Q8 connects with NMOS tube Q9, the drain electrode of PMOS Q8 connects the output VCC3 forcing disjunction power supply circuits 6-1, the source electrode of PMOS Q8 connects the drain electrode of NMOS tube Q9, a signal output part OUT is formed between PMOS Q8 and NMOS tube Q9, the source electrode of NMOS tube Q9 connects delay capacitor C12 one end and ground connection, delay capacitor C12 also connects a resistance R24, PMOS Q8 grid connects NMOS tube Q9 grid, PMOS Q8 grid and NMOS tube Q9 grid tie point are public control end, this public control end connects delay capacitor C12 one end (delay capacitor C12 other end ground connection), to connect between this public control end and the output VCC3 of pressure disjunction power supply circuits 6-1 the light-receiving device of optical coupler U2.Point/the defeated A of switching voltage input end go out for switching voltage signal time, the photophore of optical coupler U2 is luminous, the light-receiving device conducting of optical coupler U2, charge to delay capacitor C12, then PMOS Q8 grid and NMOS tube Q9 grid input high level, PMOS Q8 ends, NMOS tube Q9 conducting, then signal output part OUT is through NMOS tube Q9 ground connection, and signal output part OUT exports as low level, point/the defeated A of switching voltage input end go out for separating brake voltage signal time, point/voltage of switching voltage input end A reduces to 0, the photophore of optical coupler U2 is not luminous, the light-receiving device cut-off of optical coupler U2, delay capacitor C12 discharges, make PMOS Q8 grid and the temporary transient input high level of NMOS tube Q9 grid, the temporary transient output low level of signal output part OUT, preset delay time to be determined by delay capacitor C12, when delay capacitor C12 discharges into certain value, PMOS Q8 grid and NMOS tube Q9 grid are low level, PMOS Q8 conducting, NMOS tube Q9 ends, then signal output part OUT forces the output VCC3 of disjunction power supply circuits 6-1 through PMOS Q8 access, signal output part OUT exports as high level.

As shown in figure 14, divide-shut brake signal detection circuit 6-2 can also be: employing optical coupler U2, NPN type triode Q10 and delay capacitor C12 are formed, point/the defeated A of switching voltage input end go out for switching voltage signal time, the photophore of optical coupler U2 is luminous, the light-receiving device conducting of optical coupler U2, charge to delay capacitor, the then base electrode input high level of NPN type triode Q10, NPN type triode Q10 conducting, then signal output part OUT is through NPN type triode Q10 ground connection, and signal output part OUT exports as low level, point/the defeated A of switching voltage input end go out for separating brake voltage signal time, point/voltage of switching voltage input end A reduces to 0, the photophore of optical coupler U2 is not luminous, the light-receiving device cut-off of optical coupler U2, delay capacitor C12 discharges, make the temporary transient output low level of signal output part OUT, preset delay time to be determined by delay capacitor C12, after delay capacitor C12 electric discharge terminates, the base electrode input low level of NPN type triode Q10, NPN type triode Q10 ends, then signal output part OUT accesses the output VCC3 forcing disjunction power supply circuits 6-1 through resistance R25, signal output part OUT exports as high level.

In this specific embodiment, described contact state testing circuit includes contactor auxiliary contact 33, amplifier subtraction circuit 6-3-1, bleeder circuit three 6-3-3 and detects resistance R16, described contactor auxiliary contact 33 and probe of contactor synchronizing close and disconnection; On the in-phase input end that described detection resistance R16 two ends are connected to described amplifier subtraction circuit 6-3-1 and inverting input, described amplifier subtraction circuit 6-3-1 is used for converting the differential voltage detecting resistance R16 two ends to voltage to earth, if the tie point that detection resistance R16 is connected with described amplifier subtraction circuit 6-3-1 in-phase input end is homophase tie point B, if the tie point that detection resistance R16 is connected with described amplifier subtraction circuit 6-3-1 inverting input is anti-phase tie point C; The input of described bleeder circuit three 6-3-3 connects the output forcing disjunction power supply circuits 6-1, first output of described bleeder circuit three 6-3-3 is connected on described homophase tie point B, second output of bleeder circuit three 6-3-3 is connected with described auxiliary contact 33 one end and ground connection, and the other end of described auxiliary contact 33 is connected on described anti-phase tie point C; When auxiliary contact 33 disconnects, described detection resistance R16 both end voltage is 0, the output correspondence of described amplifier subtraction circuit 6-3-1 exports contact and disconnects decision signal, it is low level that contact disconnects decision signal, resistance R16 two ends coating-forming voltage is detected when auxiliary contact 33 closes, the output correspondence of described amplifier subtraction circuit 6-3-1 exports contact closure decision signal, and contact closure decision signal is high level.

Wherein, amplifier subtraction circuit 6-3-1 includes integrated transporting discharging B, resistance R11, resistance R12, resistance R13 and resistance R15; Integrated transporting discharging B normal phase input end contact resistance R11, resistance R12; Resistance R11 one end contact resistance R12, integrated transporting discharging B normal phase input end, resistance R11 other end ground connection; Resistance R12 one end contact resistance R11, integrated transporting discharging B normal phase input end, the normal phase input end that the resistance R12 other end connects detection resistance R16, resistance R17, this end of resistance R18(resistance R12 is amplifier subtraction circuit 6-3-1); Integrated transporting discharging B inverting input contact resistance R15, resistance R13; Resistance R15 one end connects integrated transporting discharging B inverting input, resistance R13, the resistance R15 other end connects integrated transporting discharging B output; Resistance R13 one end contact resistance R15, integrated transporting discharging B inverting input, the resistance R13 other end connects detection resistance R16, contactor auxiliary contact (this end of resistance R13 is the inverting input of amplifier subtraction circuit 6-3-1).Described bleeder circuit three 6-3-3 is in series by resistance R17 and resistance R18, resistance R17 one end connects the output (this end of resistance R17 is bleeder circuit three 6-3-3 input) forcing disjunction power supply circuits 6-1, and resistance R17 other end contact resistance R18, amplifier subtraction circuit 6-3-1 normal phase input end, this end of detection resistance R16(resistance R17 are first output of bleeder circuit three 6-3-3); Resistance R18 one end contact resistance R17, resistance R18 other end ground connection be connected contactor auxiliary contact (this end of resistance R18 is bleeder circuit three 6-3-3 second output); Contactor auxiliary contact 33 one end contact resistance R18, contactor auxiliary contact 33 other end connects detection resistance R16; Detect the normal phase input end that resistance R16 one end connects amplifier subtraction circuit 6-3-1, detect the inverting input that the resistance R16 other end connects amplifier subtraction circuit 6-3-1.

As shown in figure 11, described pressure disjunction power supply circuits 6-1 can for being taken to the line voltage feed circuit of contactor dynamic/static contact power source, the power supply of access 380V, step-down (being 18V in specific embodiment) is carried out through transformer T1, and then connect rectifier bridge D9(rectification) and diode D10(filtering) form output for low-voltage DC, force disjunction power supply circuits 6-1 also as the working power of divide-shut brake signal detection circuit 6-2, contact state testing circuit 6-3.Described pressure disjunction power supply circuits 6-1 also can for access divide-shut brake power supply circuits be then through capacitances to supply power, as shown in figure 12, the output of divide-shut brake power supply circuits carries out step-down (being 18V in specific embodiment) through transformer T2, then export as direct current through connecting rectifier bridge D9 rectification again, it can be super capacitor that the output of rectifier bridge D9 connects storage capacitor C13(storage capacitor C13, also can be conventional capacitive) and the anode of diode D10, storage capacitor C13 other end ground connection, the negative electrode of diode D10 is the output forcing disjunction power supply circuits, export low-voltage DC, when normally closing a floodgate, divide-shut brake power supply circuits after treatment for forcing a point deenergizing to be powered, and charge for storage capacitor C13, and when separating brake, the power-off of divide-shut brake power supply circuits, storage capacitor C13 powers as power supply.

Claims

1. the permanent magnetism type contactor with disjunction protective device, comprise contactor body and control circuit, contactor body includes casing, permanent magnet operating device and contact apparatus, contact apparatus comprises moving contact and the fixed contact of corresponding matching, it is dynamic that permanent magnet operating device comprises control, the dynamic iron core of fixed contact deciliter, with the permanent magnetism coil mechanism of dynamic iron core corresponding matching, and drive dynamic, the reaction spring that fixed contact is separated, permanent magnetism coil mechanism includes bobbin, divide-shut brake magnet exciting coil, yoke and permanent magnet, it is characterized in that: described casing is also provided with forcible tripping device, forcible tripping device comprises can the pressure disjunction spring of deformation energy storage, force disjunction spring to have a distortion and drive release end, this distortion drives release end to be connected with can drive the dynamic of "on" position when forcing disjunction spring to release energy, cap is jumped in the pressure disjunction that fixed contact is separated, force disjunction to jump cap corresponding matching and have the latching device forcing disjunction spring for locking and release, latching device has can jump cap snap fit to realize the snap close end forcing disjunction spring latch at energy storage state with pressure disjunction, and drive snap close end and force disjunction to jump cap to thread off to discharge the trigger end forcing disjunction spring, the trigger end of latching device connects trigger equipment.

2. be with the permanent magnetism type contactor of disjunction protective device according to claim 1, it is characterized in that: described pressure disjunction spring is the stage clip of compressed energy-storage, stage clip is located between dynamic iron core and permanent magnetism coil mechanism, forcing disjunction to jump cap is connected on the distortion driving release end of pressure disjunction spring, forcing disjunction to jump cap is positioned at below dynamic iron core, and iron core can be moved move to open position by closing position by pushing tow when forcing disjunction spring to release energy, described pressure disjunction spring is relative to the other end that cap abuts one end is fixedly supported on casing with forcing disjunction to be jumped, force disjunction to jump cap and be provided with the spring energy-storage actuating arm driving and force the compression of disjunction jumping cap to force disjunction spring energy-storage.

3. be with the permanent magnetism type contactor of disjunction protective device according to claim 2, it is characterized in that: described pressure disjunction jumping cap is provided with at least two locks be uniformly distributed circumferentially and refers to, latching device comprises the latching device unit locked with each and refer to corresponding matching, latching device unit includes the pedestal be arranged on casing, and the snap close piece be pivoted on pedestal, tripping part, tripping part has trip positions and latched position, tripping part is provided with and forces disjunction to jump cap to be linked to drive tripping part to turn to the latch actuation portion of latched position from trip positions, and refer to lock the locking stopper section that locking/dropout coordinates, locking stopper section is located on the upper swing arm of tripping part, snap close piece is arranged on described tripping part rear, snap close piece comprises the rotatable lock dog that correspondence is journaled into swing arm position on tripping part, rotatable lock dog is extended with coupled arm downwards, the rotatable lock dog of described snap close piece be provided with for tripping part when trip positions against dropout bearing surface, for the lock-bit clamp that tripping part leans when latched position, and drive snap close piece rotation realize tripping part and lock the dropout trigger arm referring to thread off, the upper swing arm of described tripping part is provided with the lock-bit window snapped in for lock-bit clamp when being in trip positions for tripping part, be provided with when being in trip positions for tripping part on the upside of lock-bit window and lock-bit clamp is clasped, when being in latched position with lock-bit clamp against the baffle plate coordinated, the interlock torsion spring driving the upper swing arm of tripping part to be close to snap close piece is provided with between the bottom moved end and the bottom swing arm of snap close piece of described tripping part, interlock torsion spring is pivoted on pedestal, the side torsion spring arm of interlock torsion spring is connected to the bottom moved end of tripping part, the opposite side torsion spring arm of interlock torsion spring is connected on the coupled arm of snap close piece.

4. be with the permanent magnetism type contactor of disjunction protective device according to claim 3, it is characterized in that: the back side of described tripping part is extended with pivot joint ear, the upper swing arm of tripping part is provided with lock and refers to latch-up window, described latch actuation portion is located at the latch actuation projection locked and refer in latch-up window, latch actuation projection refers to latch-up window in extending towards pressure disjunction jumping cap side and stretch out described lock, with the lock forcing disjunction to jump cap, described latch actuation projection refers to that counter stopper realizes driving tripping part to turn to latched position from trip positions, described locking stopper section is the block be positioned on the upside of latch-up window.

5. be with the permanent magnetism type contactor of disjunction protective device according to claim 4; it is characterized in that: described latch actuation projection extends obliquely in jumping cap side towards pressure disjunction; the downside that described lock refers to is provided with breach, and refers to that lower wall forms circular arc guide surface at lock.

6. be with the permanent magnetism type contactor of disjunction protective device according to claim 4, it is characterized in that: described lock refers to that upper side is provided with the inclined-plane extending to lock finger tip, this inclined-plane is for referring to finger tip from extending to lock obliquely away from lock finger tip one end.

7. be with the permanent magnetism type contactor of disjunction protective device according to claim 1, it is characterized in that: described trigger equipment includes magnetictrip and transmission mechanism, the dynamic iron core of magnetictrip to drive with the trigger end of latching device through transmission mechanism and is connected; Described control circuit comprises normal disjunction control circuit and forces disjunction control circuit,

8. be with the permanent magnetism type contactor of disjunction protective device according to claim 7, it is characterized in that: described divide-shut brake signal detection circuit includes bleeder circuit one, is in series with the bleeder circuit two of optical coupler, delay capacitor and voltage comparator,

9. the permanent magnetism type contactor with disjunction protective device according to claim 7 or 8; it is characterized in that: described contact state testing circuit includes contactor auxiliary contact, amplifier subtraction circuit, bleeder circuit three and detects resistance; described contactor auxiliary contact and probe of contactor synchronizing close and disconnection

10. be with the permanent magnetism type contactor of disjunction protective device according to claim 7; it is characterized in that: described pressure disjunction power supply circuits are the line voltage feed circuit being taken to contactor dynamic/static contact power source; force disjunction power supply circuits to export direct current after step-down, rectification, filtering, force disjunction power supply circuits also as the working power of divide-shut brake signal detection circuit, contact state testing circuit.