CN107234427A - Busbar joint bolt tightens intelligent controlling device and method - Google Patents
Busbar joint bolt tightens intelligent controlling device and method Download PDFInfo
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- CN107234427A CN107234427A CN201710464589.4A CN201710464589A CN107234427A CN 107234427 A CN107234427 A CN 107234427A CN 201710464589 A CN201710464589 A CN 201710464589A CN 107234427 A CN107234427 A CN 107234427A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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Abstract
The present invention discloses a kind of busbar joint bolt in power transmitting device and tightens intelligent controlling device and method, busbar joint four is mutually each through corresponding lead and common guide wire jointing impedance collection unit input, impedance collecting unit output end connects single-phase impedance and upper limit comparing unit and three phase connection impedance approximately equal comparing unit input respectively, the output end of single-phase impedance and upper limit comparing unit connects servo motor control unit through corresponding four relays, three phase connection impedance approximately equal comparing unit output end connects servo motor control unit through three relays of correspondence；Resistance signal is converted into the power on/off that voltage signal is compared rear control relay coil, with relay normally open normally closed switch controlled motor, it is to avoid Motor torque overloads and makes bolt stripped thread；After motor stalling, if it is determined that bolt is tightened and fault-free is present, and indicator lamp does not work all, if stalled due to detecting failure, and corresponding indicator lamp can be bright.
Description
Technical field
The present invention relates to the device for screwing up of technical field of electric power, particularly power transmitting device median generatrix track bolt.
Background technology
Bus is the important component of power transmitting device, however, bus is in installation process, is connected between its each unit
The reliability connect can be directly connected to the safe operation of whole power supply-distribution system, the particularly size of busbar joint resistance can be to it
Operating efficiency and service life are directly affected.Connection is bolted at busbar joint, if bolt is not tightened, or bus copper
There is the non-conductive impurity such as oxide layer all to cause the increase of junction connection resistance between row, if in addition, casting technique is not good, also can
Make copper bar surface irregularity, also result in impedance increase, joint temperature rise increase can be made by being at this moment passed through electric current, will be gone out
The phenomenons such as existing copper loss increase, electric energy loss increasing, fast, the hurried shortening of bus service life of insulating materials aging.Therefore, tightening
Detection is carried out during busbar joint bolt to busbar joint resistance to be very important, this normal work to busbar joint even electricity
The normal operation of power transmission equipment has great significance.
At present, what Bolt Screw Down Method was the most frequently used have, and moment of torsion tightens that method, the anglec of rotation tighten method and yield point control is tightened
Method.China Patent No. is that make use of the anglec of rotation for a kind of Intelligent bolt tightening machine disclosed in 201020132713.0 document
The principle of method is tightened, is connected by motion controller by servo-driver with servomotor so as to control the operation of servomotor,
Servomotor is connected further through one end of decelerator and power transmission shaft, and the other end of power transmission shaft is provided with tappet head；In transmission
Angular transducer and torque sensor are separately installed with axle, the angular transducer and torque sensor respectively with motion controller
Electrical connection makes motion controller combination pre-set programs control servo electricity so as to provide moment of torsion and swing information for motion controller
Machine works.Moment of torsion and angle when the bolt screwing machine can accurately control plain bolt rundown process, although can guarantee that common spiral shell
Bolt tightens quality and efficiency, but for busbar joint bolt, is only capable of accurate control mode and angle and still can not solve it making
The problem of using the lost of life, because even having tightened busbar joint bolt, if thering is impurity or oxide to deposit between bus bar copper row
, or because casting technique problem makes copper bar surface irregularity busbar joint impedance is become big, being passed through after electric current makes
Connector temperature increases, and can make insulating materials aging, and bus service life shortens.
The content of the invention
Intelligent controlling device and the controlling party of the device are tightened the purpose of the present invention is to propose to a kind of busbar joint bolt
Method, is detected when tightening busbar joint bolt to busbar joint resistance, it is to avoid busbar joint impedance becomes big or copper bar surface
The problem of connector temperature increase and service life shorten caused by uneven.
Busbar joint bolt of the present invention tighten intelligent controlling device use technical scheme be：Tappet head is enclosed on busbar joint
The output shaft of servomotor is fixedly and coaxially connected outside the head of bolt and through torque limiter, torque limiter is limited provided with control
Bit switch, A, B, C, N tetra- of busbar joint is mutually each through corresponding wire a, b, c, d and common wire e jointing impedances
The input of collecting unit, the output end of impedance collecting unit connect respectively single-phase impedance and upper limit comparing unit and
The input of three phase connection impedance approximately equal comparing unit, the output end of single-phase impedance and upper limit comparing unit is through corresponding
Four relay KN、KA、KB、KCConnect servo motor control unit, the output of three phase connection impedance approximately equal comparing unit
End is through corresponding three relay KAB、KBC、KCAServo motor control unit is connected, servo motor control unit connects open respectively
Stop button and the servomotor, servo motor control unit passes through relay KRConnect the limit switch.
Further, the servo motor control unit includes current transformer L1, integrated transporting discharging A15With relay KI, open
Stop being sequentially connected in series current transformer L on the termination power of button one, the other end three branch roads in parallel, first branch road1Primary side
Coil, servomotor, relay KR、KINormally closed switch；Relay KN、KA、KB、KCNormally closed switch be all connected in parallel on relay KI
Normally closed switch two ends, second siding ring one end ground connection of current transformer, another termination integrated transporting discharging A15Anti-phase input
End, resistance R is connected in parallel on the two ends of the second siding ring of current transformer；The resistance of 3rd variable resistance is serially connected in+5V power supplys
Between ground, its slide plate joint meets integrated transporting discharging A15In-phase input end, integrated transporting discharging A15Output relay termination KICoil
One end, relay KIThe another of coil terminates at 5V power supplys, relay KIOne diode of coil two ends parallel connection；Article 2 branch road
On be sequentially connected in series relay KN、KA、KB、KC、KINormal open switch, relay KIThe other end of normal open switch connect first respectively
Individual indicator lamp LABWith relay KABThe series arm of normal open switch, second indicator lamp LBCWith relay KBCNormal open switch
Series arm, the 3rd lamp LCAWith relay KCANormal open switch series arm；Article 3 branch routing relay KRIt is normal
Switch, the 4th indicator lamp LN, relay KNNormally closed switch sequentially connect, the 5th indicator lamp LAWith relay KAIt is normal
The series arm of make and break pass, the 6th indicator lamp LBWith relay KBThe series arm of normally closed switch, the 7th indicator lamp LCWith
Relay KCThe series arm of normally closed switch be each connected in parallel on the 4th indicator lamp L respectivelyNWith relay KNNormally closed switch
The two ends of series arm.
The technical scheme that the control method that the busbar joint bolt tightens intelligent controlling device is used is with following step
Suddenly：
A, the phase of impedance collecting unit collection busbar joint A, B, C, N tetra- impedance RA、RB、RC、RN, output electricity
Press uN、uA、uB、uC；As tappet head 1 tightens the increase of degree, impedance RN、RA、RB、RCIt is gradually reduced, output voltage uN、
uA、uB、uCAlso it is gradually reduced；
B, voltage uN、uA、uB、uCInput single-phase impedance and upper limit comparing unit, single-phase impedance are compared with the upper limit
Unit is by voltage uN、uA、uB、uCRespectively with the upper voltage limit u of settingT1Make comparisons, if voltage uN、uA、uB、uCMore than or equal to upper
Voltage limit uT1, then corresponding relay KN、KA、KB、KCCoil no power, if instead voltage uN、uA、uB、uCLess than the upper limit
Voltage uT1, then corresponding relay KN、KA、KB、KCCoil electricity；Meanwhile, voltage uA、uB、uCInput is approximate to three phase connection
Comparison of equalization unit, subtracts each other out of phase two voltage through three subtracters two-by-two, and three subtracters export corresponding voltage
u1、u2、u3, by voltage u1、u2、u3Respectively with setting voltage uT2Make comparisons, if voltage u1、u2、u3More than or equal to setting voltage
uT2, then corresponding relay KAB、KBC、KCACoil electricity, conversely, then corresponding relay KAB、KBC、KCACoil it is obstructed
Electricity；Disconnect limit switch, relay KRCoil no power；
The armature supply of servomotor is converted into voltage u by C, servo motor control unitI, and by voltage uIWith setting electricity
Press uT3Make comparisons, if voltage uIMore than or equal to setting voltage uT3, relay KICoil electricity, conversely, relay KICoil is not
It is powered；
If D, relay KN、KA、KB、KC、KICoil all it is electric, servomotor stops operating, tappet head stop tighten
Bus bolt；If relay KN、KA、KB、KC、KICoil also not all it is electric, if the moment of torsion of torque limiter exceed moment of torsion
The upper limit, limit switch SQ closures, relay KRCoil obtain electric, servomotor stops operating.
It is of the invention compared with existing methods and techniques, have the following advantages that：
1st, the present invention adds busbar joint impedance detection part in bolt screwing machine structure, uses electronic circuit control skill
Art, is directly converted to the power on/off that voltage signal is compared rear control relay coil by resistance signal, normal with relay
The start and stop of open relay normally closed switch controlled motor, cost is low and fast response time, and each bar controlling brancher is all arranged side by side
Judge, the reaction time is fast, it is to avoid Motor torque is overloaded and makes bolt stripped thread so that the connection reliability of busbar joint is carried significantly
It is high.
2nd, the present invention adds seven indicator lamps in Serve Motor Control circuit, after motor stalling, if being to determine spiral shell
Bolt is tightened and fault-free is present, it indicates that lamp does not work all；If due to the stalling for detecting failure and occurring, then accordingly referring to
Show that lantern festival is bright, remind maintenance man's guilty culprit position, and then the convenient amount of labour repaired, reduce maintenance man.
Brief description of the drawings
Fig. 1 is the general structure schematic diagram that busbar joint bolt of the present invention tightens intelligent controlling device；
Fig. 2 is the structured flowchart of control circuit in Fig. 1；
Fig. 3 is the structural representation of Fig. 2 center tap impedance collection units；
Fig. 4 is single-phase impedance and upper limit comparing unit structure and external schematic diagram in Fig. 2；
Fig. 5 is three phase connection impedance approximately equal comparing unit structure and external schematic diagram in Fig. 2；
Fig. 6 is servo motor control unit structure and external schematic diagram in Fig. 2.
The sequence number and title of each part in accompanying drawing：1. tappet head；2. torque limiter；3. fixing nut；4. limiter is consolidated
Determine frame；6. moment of torsion regulating bolt；7. motor fixing frame；8. servomotor；9. insulating barrier；10. cover plate；11. bus nut；
12. connect busbar；13. joint busbar；14. conductive clamp；15. busbar joint bolt；17. spring；28. circuit control box；29.
Tightening mechanism shell；SB. start-stop button；SQ. limit switch；LABFirst indicator lamp；LBCSecond indicator lamp；LCAThe 3rd
Individual indicator lamp；LNThe 4th indicator lamp；LAThe 5th indicator lamp；LBThe 6th indicator lamp；LCThe 7th indicator lamp；RP1
One variable resistance；RP2The second adjustable resistance device；RP3The 3rd variable resistance.
Embodiment
Referring to Fig. 1, exemplified by connecting the busbar joint of bus in the way of docking up and down, dock busbar joint includes up and down
The portions such as insulating barrier 9, cover plate 10, bus nut 11, connection busbar 12, joint busbar 13, conductive clamp 14, bus bolt 15
Part.The busbar joint one has four phases, is A phase, B phase, C phase and N phases respectively, and the upper lower contact busbar 13 per phase passes through left and right two
Side connection busbar 12 is connected, and makes current lead-through.The left side and right side for connecting busbar 12 are respectively fixed on one piece of insulating barrier 9, are led to
The electric signal crossed between the every phase of insulation sexual isolation of insulating barrier 9.The left and right sides of middle three insulating barriers 9 is respectively fixed with connection
Busbar 12, outermost two insulating barriers 9 in left and right are then that inner side is fixed with connection busbar 12, outside and respectively pressed from both sides by one piece of cover plate 10
Firmly, the middle busbar joint bolt 15 of the two cover plates 10 of left and right sides is fixedly connected, and coordinates female on busbar joint bolt 15
Line nut 11, is fixed all insulating barriers 9, all connection busbars 12 by busbar joint bolt 15 and bus nut 11
Together, to clamp upper lower contact busbar 13.The head of busbar joint bolt 15 passes through a kind of busbar joint of the present invention
Bolt is tightened intelligent controlling device and tightened, so that connection busbar 12 and upper lower contact busbar 13 are closely connected, makes connection resistance
It is as small as possible.
The joint busbar 13 on this four phases top of the A phase, B phase, C phase and N phases of busbar joint is respectively connected by a conductive clamp
A corresponding wire is connect, the joint busbar 13 of this four phases bottom of A phase, B phase, C phase and N phases is respectively connected by a conductive clamp
A piece common wire.Wherein, that the joint busbar 13 on A phases top is connected by a conductive clamp is wire a, B phases top
Joint busbar 13 connected by a conductive clamp is that the joint busbar 13 on wire b, C phase top passes through a conductive clamp
Connection is wire c, and that the joint busbar 13 on N phases top is connected by a conductive clamp is wire d, the joint busbar of bottom
13 connect a common wire e by a conductive clamp respectively.
A kind of busbar joint bolt of the present invention, which tightens intelligent controlling device, includes a tappet head 1, tappet head 1
One end is opening, and opening coaxial sleeve is engaged, tappet head 1 outside the head of busbar joint bolt 15 with busbar joint bolt 15
During rotation busbar joint bolt 15 can be driven to rotate.The other end of tappet head 1 is fixedly and coaxially connected torque limiter 2, and (i.e. safety joins
Axle device) one end, the other end of torque limiter 2 is fixedly and coaxially connected the output shaft of servomotor 8, makes servomotor 8 by moment of torsion
Limiter 2 is connected with bolt tappet head 1.Tightening mechanism shell 29, servo are cased with outside servomotor 8 and torque limiter 2
Motor 8 is fixed on the inwall of tightening mechanism shell 29 by motor fixing frame 7, and torque limiter 2 is fixed on limit with fixed screw 3
On device fixed mount 4 processed, limiter fixed mount 4 is fixed on the inwall of tightening mechanism shell 29.Moment of torsion is installed on torque limiter 2
Regulating bolt 6 and limit switch SQ, moment of torsion regulating bolt 6 are used for the upper torque limit for adjusting torque limiter 2, once servomotor
8 moment of torsion exceedes the upper torque limit set, then limit switch SQ can export 24V DC signal, this electric signal control
Servomotor 8 processed is closed.
The nailed circuit control box 28 on the outer wall of tightening mechanism shell 29, the inside of circuit control box 28 is control
Circuit, the control circuit that servomotor 8 is introduced inside circuit control box 28 by wire.The wire a of jointing busbar 13, b,
C, d, e are also introduced into the control circuit inside circuit control box 28.
Three variable resistances and seven LED lights are housed, being respectively first can power transformation on the outer wall of circuit control box 28
Hinder device RP1, the second adjustable resistance device RP2, the 3rd variable resistance RP3With first indicator lamp LAB, second indicator lamp LBC,
Three indicator lamp LCA, the 4th indicator lamp LN, the 5th indicator lamp LA, the 6th indicator lamp LB, the 7th indicator lamp LC。
Start-stop button SB is installed on the outer wall of tightening mechanism shell 29, start-stop button SB is serially connected in the He of servomotor 8
Between circuit control box 28.Spring 17 is housed, only hand is pressed on start-stop button SB, start-stop button SB just meetings on start-stop button SB
It is connected with the terminal of servomotor 8, the control circuit for just making servomotor 8 access inside circuit control box 28, once put
Start button SB is opened, start-stop button SB can be bounced off the terminal of servomotor 8 by spring 17, so as to disconnect servomotor 8
Power supply.
Referring to the control circuit inside Fig. 2 circuit control box 28, control circuit mainly includes：Impedance collection is single
First, single-phase impedance and upper limit comparing unit, three phase connection impedance approximately equal comparing unit and servo motor control unit.
The output end of impedance collection converting unit connects single-phase impedance and upper limit comparing unit and three phase connection impedance respectively
The input of approximately equal comparing unit, single-phase impedance is compared with upper limit comparing unit and three phase connection impedance approximately equal
The output end of unit connects servo motor control unit through relay, and servo motor control unit is also respectively connected with start-stop button SB
Coil and seven indicator lamp LAB、LBC、LCA、LN、LA、LB、LC.The termination powers of start-stop button SB mono-, the other end is through servomotor
The first siding ring connection servomotor 8 of current transformer in control unit.
The input of impedance collecting unit has five extraction wires, this five extraction wire difference jointing busbars
13 wire a, b, c, d, e, for gathering impedance R of the A phase, B phase, C phase of joint busbar 13 with N phases per phaseA、RB、RC、
RN.It is, being the impedance R of N phase joints busbar 13 between wire d and wire eN, it is that A connects between wire a and wire e
Head impedance RA, it is B phase impedances R between wire b and wire eB, that between wire c and wire e is C phase impedances RC.Connect
Head impedance collection converting unit is by impedance RN、RB、RCAnd RAIt is converted into corresponding voltage uN、uA、uBAnd uCAnd export.So
Afterwards, by voltage uN、uA、uBAnd uCIt is used as the input of single-phase impedance and upper limit comparing unit.Single-phase impedance and upper limit ratio
Output end compared with unit connects four relay K respectivelyN、KA、KB、KCCoil port, specifically connect referring to Fig. 4.Four relays
Device KN、KA、KB、KCSwitch port connect the input of servo motor control unit respectively, specifically connect referring to Fig. 6.Meanwhile,
Impedance is gathered to three voltage u of converting unit outputA、uBAnd uCIt is used as three phase connection impedance approximately equal comparing unit
Input voltage, the output end of three phase connection impedance approximately equal comparing unit connects three relay K respectivelyAB、KBC、KCA's
Coil port, is specifically connected referring to Fig. 5.Three relay KAB、KBC、KCASwitch port connect Serve Motor Control list respectively
The input of member, is specifically connected referring to Fig. 6.
Relay K in limit switch SQ one end connection+12V power supplys in Fig. 1, other end connection figure 2RCoil one
End, relay KRCoil the other end ground connection, relay KRCoil two ends parallel diode D1, diode D1Anode
Ground connection, negative electrode is connected on relay KRCoil and limit switch SQ between, diode D1For preventing electric current from flowing counterflow through relay
KRCoil.In torque overload moment, limit switch SQ conductings, Continuity signal is used for control relay KRCoil electricity, and then
Control corresponding relay KRSwitch, so as to control the start and stop of servomotor 8.
Single-phase impedance judges whether be less than the higher limit of setting, Ran Houtong per phase impedance with upper limit comparing unit
Cross relay KN、KA、KBAnd KCCoil power on/off so that control correspondence relay KN、KA、KBAnd KCSwitch.Three phase connection hinders
Anti- approximately equal comparing unit judge per two-phase joint impedance whether approximately equal, then pass through control relay KAB、KBCAnd KCA
Coil power on/off so that control correspondence relay KAB、KBCAnd KCASwitch.
Impedance collecting unit shown in Figure 3, it is main to include four current source IS1、IS2、IS3、IS4With four electricity
Press follower G1、G2、G3、G4, four current source IS1、IS2、IS3、IS4Output current size it is identical, its value be I.With N phase joints
Exemplified by impedance collection and conversion, integrated transporting discharging A1Inverting input and A1Output end be connected, constitute voltage follower G1；Collection
Into amplifier A1In-phase input end be connected with wire d, current source IS1One end be connected to integrated transporting discharging A1In-phase input end with
Between wire d, current source IS1It is another terminate between wire e and ground, wire e ground connection.According to the general of " empty short " and " void is disconnected "
Read, integrated transporting discharging A1Input current be 0, that is, current source IS1Electric current I only lead to wire d, then pass through N phases joint hinder
It is grounded after anti-by wire e, forms a loop.Voltage between wire d and ground is exactly N phase impedances RNIt is passed through electric current I
Voltage u afterwardsd.Using the following feature of voltage follower, then voltage follower G1Output voltage uN=ud, and output voltage uN
It will not be influenceed by rear circuit.The connection of A, B, C phase joint impedance collection and change-over circuit and N phase joint impedance collections and turn
The connection for changing circuit duplicates, and simply the current source of A, B, C phase is respectively IS2、IS3、IS4, voltage follower is G respectively2、G3、G4,
Constitute voltage follower G2、G3、G4Integrated transporting discharging be integrated transporting discharging A respectively2、A3、A4.Voltage follower G2Output voltage uA
Input voltage u equal to wire aa, input voltage uaNamely A phases impedance is passed through the voltage u after electric current Ia；Voltage follow
Device G3Output voltage uBInput voltage u equal to wire bb, input voltage ubNamely B phases impedance is passed through after electric current I
Voltage ub；Voltage follower G4Output voltage uCInput voltage u equal to wire cc, input voltage ucNamely C phases joint hinders
It is anti-to be passed through the voltage u after electric current Ic。
Referring to Fig. 4 single-phase impedance and upper limit comparing unit and the unit and four relay KN、KA、KBAnd KC's
The connection figure of coil, single-phase impedance mainly includes four integrated transporting discharging A with upper limit comparing unit5、A6、A7、A8, four two
Pole pipe D2、D3、D4、D5With the first variable resistance RP1.First variable resistance RP1Resistance be serially connected in+5V power supplys and ground
Between, the slide plate joint of variable resistance is connected on integrated transporting discharging A simultaneously5、A6、A7、A8Inverting input, that is, integrated transporting discharging
A5、A6、A7、A8Inverting input be passed through identical voltage, be uT1, voltage uT1Can be by rotating the first variable resistance RP1
Slide plate change.Voltage uN、uA、uB、uCInput integrated transporting discharging A correspondingly respectively5、A6、A7、A8In-phase input end, it is integrated
Amplifier A5、A6、A7、A8Output end respectively correspondingly connect a relay KN、KA、KB、KCOne end of coil, relay KN、
KA、KB、KCThe other end of coil is all connected on+5V power supplys, diode D2It is connected in parallel on relay KNCoil two ends, diode D2Negative electrode
+ 5V is met, anode is connected on integrated transporting discharging A5Output port and relay KNBetween coil, diode D3、D4、D5It is connected in parallel on respectively pair
The relay K answeredA、KB、KCCoil two ends, direction and diode D2It is identical.The specific works characteristic of circuit explanation by taking N phases as an example
It is as follows：Integrated transporting discharging A5、A6、A7、A8It is exactly simple voltage comparator, uNIt is used as integrated transporting discharging A5Homophase input voltage, will
First variable resistance RP1The u obtained after regulationT1It is used as integrated transporting discharging A5Reverse inter-input-ing voltage, uNAnd uT1It is compared, one
Denier uN<uT1, then integrated transporting discharging A5Export low level, corresponding relay KNCoil electricity, and then make relay KNNormally closed open
Shut-off is opened, relay KNNormal open switch closure；If uN≥uT1, then integrated transporting discharging A5High level is exported, electric current is from diode D2
To upstream, relay KNCoil no power, therefore relay KNNormally closed switch still in closure state, relay KNIt is normal
Switch is in open mode.Similarly, once uA<uT1, then integrated transporting discharging A6Export low level, corresponding relay KACoil
It is powered, and then makes relay KANormally closed switch disconnect, relay KANormal open switch closure；Once uB<uT1, then integrated transporting discharging
A7Export low level, corresponding relay KBCoil electricity, and then make relay KBNormally closed switch disconnect, relay KB's
Normal open switch is closed；Once uC<uT1, then integrated transporting discharging A8Export low level, corresponding relay KCCoil electricity, and then make
Relay KCNormally closed switch disconnect, relay KCNormal open switch closure.
Three phase connection impedance approximately equal comparing unit shown in Figure 5 and three relays being connected with the unit
KAB、KBC、KCAThe connection figure of coil.Three phase connection impedance approximately equal comparing unit mainly includes three subtracter S1、S2、S3、
Three integrated transporting discharging A12、A13、A14, three diode D6、D7、D8, several resistance and the second adjustable resistance device RP2.Resistance R1、
RA1、RA3、RB1、RB3、RC1、RC3Resistance value it is identical, resistance R2、RA2、RA4、RB2、RB4、RC2、RC4Resistance value it is identical.Joint hinders
Three voltage u of anti-collecting unit outputA、uB、uCRespectively accordingly input three subtracter S1、S2、S3.Subtracter S1Comprising integrated
Amplifier A9, integrated transporting discharging A9Inverting input and uAResistance R has been concatenated between portA1, resistance RA1With integrated transporting discharging A9It is anti-phase
Resistance R is connected between inputA2One end, resistance RA2Another terminate at integrated transporting discharging A9Output end, integrated transporting discharging A9
In-phase input end and uBResistance R has been concatenated between portA3, resistance RA3With integrated transporting discharging A9In-phase input end between be connected to
Resistance RA4One end, resistance RA4The other end ground connection, thus constitute subtracter S1.Subtracter S2By integrated transporting discharging A10And electricity
Hinder RB1、RB2、RB3、RB4Constitute, subtracter S3By integrated transporting discharging A11And resistance RC1、RC2、RC3、RC4Constitute.Subtracter S2With subtract
Musical instruments used in a Buddhist or Taoist mass S3Structure and connection and subtracter S1It is similar, simply by resistance RA1Change R into respectivelyB1And RC1, resistance RA2、RA3、RA4With
Integrated transporting discharging A9Also it is similar to replace.Subtracter S2Anti-phase input termination uB, homophase input termination uC；Subtracter S3Anti-phase input
Terminate uC, homophase input termination uA.Subtracter S1、S2、S3Output be voltage u respectively1、u2、u3, voltage u1、u2、u3Respectively as
Integrated transporting discharging A12、A13、A14Anti-phase input.The second adjustable resistance device RP2Resistance be serially connected between+5V power supplys and ground, its slide
Strip terminal is connected on integrated transporting discharging A simultaneously12、A13、A14In-phase input end, that is, A12、A13、A14In-phase input end be passed through phase
Same voltage, is uT2, voltage uT2Can be by rotating the second adjustable resistance device RP2Slide plate change.Integrated transporting discharging A12、A13、A14
Output end meet a corresponding relay K respectivelyAB、KBC、KCAOne end of coil, relay KAB、KBC、KCAThe other end of coil
All it is connected on+5V power supplys, diode D6It is connected in parallel on relay KABCoil two ends, diode D6Negative electrode meets+5V, and anode is connected on integrated
Amplifier A12Output port and relay KABBetween coil, diode D7、D8Relay K is connected in parallel on respectivelyBC、KCACoil two ends,
Direction and diode D6It is identical.
When three phase connection impedance approximately equal comparing unit works, first through three subtracter S1、S2、S3By out of phase two
Individual voltage subtracts each other two-by-two according to formula, exports corresponding three voltage u1、u2、u3, then by three voltage u1、u2、u3Respectively with setting
Determine voltage uT2Make comparisons.Specific operation principle is described as follows so that A phases are compared with B as an example：Out of phase two voltage uAWith
uBRespectively as subtracter S1Reverse inter-input-ing voltage and homophase input voltage, through subtracter S1Obtain subtracting each other resultThen by the voltage u of output1It is used as integrated transporting discharging A12Reverse inter-input-ing voltage, by the second adjustable resistance device
RP2The u obtained after regulationT2It is used as integrated transporting discharging S12Homophase input voltage, u1And uT2It is compared, once u1≥uT2, then collect
Into amplifier A12Export low level, corresponding relay KABCoil electricity, and then make corresponding relay KABNormal open switch close
Close；If u1<uT2, then integrated transporting discharging A12High level is exported, electric current is from diode D6To upstream, relay KABCoil it is obstructed
Electricity, therefore relay KABNormal open switch still in off-state.Similarly, voltage uBAnd ucThrough subtracter S2ObtainOnce u2≥uT2, then integrated transporting discharging A13Export low level, corresponding relay KBCCoil electricity, enter
And make relay KBCNormal open switch closure.Similarly, voltage uAAnd ucThrough subtracter S3ObtainOnce u3≥
uT2, then integrated transporting discharging A14Export low level, corresponding relay KCACoil electricity, and then make relay KCANormal open switch
Closure.
It is the start-stop button SB that is connected referring to the servo motor control unit in Fig. 6 and with the unit, servomotor 8, some
Relay and seven indicator lamps.Servo motor control unit mainly includes a current transformer L1, an integrated transporting discharging A15, one
Individual relay KI.Start button SB mono- terminates+12V power supplys, the other end three branch roads in parallel, electricity of having been connected on first branch road
Current transformer L1First siding ring, servomotor 8, relay KRNormally closed switch and relay KINormally closed switch, relay
KINormally closed switch the other end ground connection.Relay KNNormally closed switch, relay KANormally closed switch, relay KBIt is normally closed
Switch, relay KCNormally closed switch be all individually connected in parallel on relay KINormally closed switch two ends.Current transformer L1It is secondary
Lateral coil one end is grounded, another to terminate at integrated transporting discharging A15Inverting input, resistance R is connected in parallel on current transformer L1It is secondary
The two ends of lateral coil.3rd variable resistance RP3Resistance be serially connected between+5V power supplys and ground, the 3rd variable resistance RP3's
Slide plate joint is connected on integrated transporting discharging A15In-phase input end, that is, integrated transporting discharging A15In-phase input end be passed through voltage uT3, voltage
uT3Can be by rotating the 3rd variable resistance RP3Slide plate change.Integrated transporting discharging A15Output terminate at relay KICoil
One end, relay KIThe other end of coil is all connected on+5V power supplys, diode D9It is connected in parallel on relay KICoil two ends, two poles
Pipe D9Negative electrode meets+5V, and anode is connected on integrated transporting discharging A15Output port and relay KIBetween coil.On Article 2 branch road, after
Electrical equipment KNNormal open switch, relay KANormal open switch, relay KBNormal open switch, relay KCNormal open switch and after
Electrical equipment KINormal open switch be sequentially connected on Article 2 branch road, relay KIThe other end of normal open switch be connected to respectively
Two indicator lamp LBCWith relay KBCThe series arm of normal open switch, first indicator lamp LABWith relay KABNormally opened open
The series arm of pass, the 3rd lamp LCAWith relay KCANormal open switch series arm, relay KAB、KBC、KCAIt is normally opened
Switch other end ground connection.On Article 3 branch road, by relay KRNormal open switch, the 4th indicator lamp LN, relay KNIt is normally closed
Switch is sequentially cascaded, relay KNNormal open switch the other end ground connection.5th indicator lamp LAWith relay KAIt is normal
The series arm of make and break pass, the 6th indicator lamp LBWith relay KBThe series arm of normally closed switch, the 7th indicator lamp LCWith
Relay KCThe series arm of normally closed switch be each connected in parallel on the 4th indicator lamp L respectivelyNWith relay KNNormally closed switch
The two ends of series arm.
Current transformer L1First siding ring be connected in the armature circuit of servomotor 8, current transformer L1Output electricity
Flow I2=k*I1, wherein k is the rated current ratio of current transformer, I1It is the armature supply of servomotor 8.Current transformer L1
The electric current I of output2Resistance R is flowed through, according to " void is disconnected " concept, integrated transporting discharging A15Input current be 0, therefore electric current I2Flow only through
Resistance R is without flowing to integrated transporting discharging A15, current signal is converted into voltage uISignal, then voltage uIIt is used as integrated transporting discharging A15's
Reverse inter-input-ing voltage；By the 3rd variable resistance RP3The u obtained after regulationT3It is used as integrated transporting discharging A15Homophase input voltage, will
Voltage uIAnd uT3It is compared, once uI≥uT3, then integrated transporting discharging A15Export low level, relay KICoil electricity, and then make
Relay KINormally closed switch disconnects；If uI<uT3, then integrated transporting discharging A15High level is exported, electric current is from diode D9To upstream, after
Electrical equipment KICoil no power, therefore relay KINormally closed switch is still in closure state.Due to the moment of torsion and electric current of servomotor 8
It is to be directly proportional, therefore the moment of torsion of servomotor 8 can be limited by control electric current.Due to uI=I2* R=k*I1* R, that is,
uIWith armature supply I1It is directly proportional, therefore limitation uIMoment of torsion with regard to servomotor 8 can be limited.Control mode lower limit be in order to avoid
Per phase impedance already less than setting value, the situation that servomotor 8 is stalled but bus bolt 15 is also not completely tightened.
Relay switch break-make situation in Fig. 6 is as follows：When start-stop button SB is pressed, Serve Motor Control list is connected
Member, first branch road controls the break-make of servomotor 8, and Article 2 branch road controls first, second, the 3rd indicator lamp LAB、
LBC、LCALight on and off, for show A, B, C phase impedance whether approximately equal；Article 3 branch road control the 4th, the 5th,
Six, the 7th indicator lamp LN、LA、LB、LCLight on and off, for showing whether N, A, B, C phase impedance are less than setting value.First
In bar branch road, when moment of torsion does not overload, relay KRNormally closed switch be in closure state, connection relay KRNormally closed switch
Five small branch roads in contain relay K respectivelyN、KA、KB、KC、KINormally closed switch, wherein any one normally closed switch closes
Close, then servomotor 8 remains in operation；Only five normally closed switch are simultaneously switched off, and servomotor 8 can just stop operating.Work as moment of torsion
During overload, relay KRNormally closed switch will disconnect, regardless of five normally closed switch, servomotor 8 can all stop operating.
In Article 2 branch road, five relay KN、KA、KB、KC、KINormal open switch, only five normal open switch are closed at, first
Individual, second, the 3rd these three indicator lamps LAB、LBC、LCACould be bright.That is, only servomotor 8 is stalled really, and
The impedance of A, B, C three-phase be both less than after setting value the impedance that just needs to detect A, B, C three-phase whether approximately equal.
If five relay KN、KA、KB、KC、KINormal open switch all close, relay KABClose, then first indicator lamp LABIt is bright；
Relay KBCClose, then second indicator lamp LBCIt is bright；Relay KCAClose, then the 3rd indicator lamp LCAIt is bright.Three indicator lamps
Light on and off are independent of each other, and judge simultaneously.That connected on Article 3 branch road is relay normally open switch KROnce, servomotor 8
Moment of torsion exceedes upper torque limit, relay normally open switch KRIt will close, branch road conducting, now servomotor 8 also stops operating,
Because the relay normally closed switch K on first branch roadRIt is off, when relay normally open switchs KRDuring closure, once inspection
Measure N phases impedance and be not less than setting value, K yetNNormally closed switch closure then the 4th indicator lamp LNIt is bright.Similarly, if A phases
Impedance is not less than setting value, K yetANormally closed switch closure then the 5th indicator lamp LAIt is bright；B phase impedances are not less than yet
Setting value, KBNormally closed switch closure then the 6th indicator lamp LBIt is bright；C phases impedance is not less than setting value, K yetCNormally closed open
Close and close then the 7th indicator lamp LCIt is bright.It is non-interference between this four branch roads, can be that any number indicator lamp is bright.
Because the resistance of busbar joint is very small, therefore the present invention connects current source on busbar joint, and resistance signal is turned
Detected for voltage signal.Then using voltage comparator compare surveyed voltage whether be less than set voltage come limit joint resistance
It is anti-, required if less than then illustrating to meet per the contact resistance between phase bus, then utilize subtracter and voltage comparator ratio
Relatively per phase impedance whether approximately equal, if not approximately equal, then need to stop bolt tightening operation, inspection is not approximate
It is whether problematic between equal two-phase busbar.The torque limiter 2 installed between servomotor 8 and tappet head 1, once arrive
Contact resistance between torque limit but busbar joint is also not reaching to requirement, it is also desirable to which operation is tightened in stopping, checking and does not have also
The problem of having certain phase for meeting contact resistance requirement or a few phase busbars.Whether the problem of main investigation is that have between bus bar copper row
Impurity or oxide are present, or whether have the problem of casting technique causes bus bar copper row surface irregularity.In addition, in order to true
Protect busbar joint to have tightened, add the detection of armature supply, torque value is speculated by the size of armature supply, because directly
The armature supply of stream motor is directly proportional to moment of torsion, if resistance has reached required value, but moment of torsion does not reach that minimum torque will also
Ask, then continue executing with and tighten operation, until reaching lower torque limit, to ensure that bus bolt 15 is tightened.Tightening control dress of the present invention
The specific control method put includes following step：
Step 1：By first, second, third variable resistance RP1、RP2、RP3Respective setting value is slided into respectively, each
Setting value be according to depending on busbar joint model.Torque limiter 2 is resetted, tappet head 1 is enclosed on into bus bolt 15 pushes up
Portion, eight conductive clamps 14 are clipped in the relevant position of joint busbar 13.
Step 2：By+5V and+12V plant-grid connections, circuit is now controlled to start action, the collection of impedance collecting unit is female
Impedance R of the A phase, B phase, C phase of wire terminal with N phases per phaseA、RB、RC、RN, by current source IS1、IS2、IS3、IS4Electric current point
Corresponding connection resistance R is not passed through by conductive clampN、RA、RB、RC, impedance is converted to corresponding voltage ud、ua、ub、
uc, voltage ud、ua、ub、ucCorrespondingly respectively as voltage follower G1、G2、G3、G4Homophase input voltage, through voltage with
With device G1、G2、G3、G4Respectively obtain output voltage uN、uA、uB、uC, and voltage uN、uA、uB、uCValue respectively with voltage ud、ua、
ub、ucValue it is identical.As tappet head 1 tightens the increase of degree, impedance RN、RA、RB、RCIt is gradually reduced, output voltage uN、
uA、uB、uCAlso it is gradually reduced.
Output voltage uN、uA、uB、uCInput single-phase impedance and upper limit comparing unit, respectively as integrated transporting discharging A5、
A6、A7、A8Homophase input voltage, adjust the first variable resistance RP1To upper voltage limit uT1, it is used as integrated transporting discharging A5、A6、A7、
A8Reverse inter-input-ing voltage, by the upper voltage limit u of homophase input voltage respectively with settingT1Make comparisons, for determining single-phase joint
Whether impedance is less than setting value, if integrated transporting discharging A5、A6、A7、A8Homophase input voltage be voltage uN、uA、uB、uCMore than etc.
In upper voltage limit uT1, then high level is exported, now corresponding diode D2、D3、D4、D5Conducting, corresponding relay KN、KA、KB、
KCNo power；, whereas if voltage uN、uA、uB、uCLess than upper voltage limit uT1, export low level, relay KN、KA、KB、KCIt is logical
Electricity.Now, because tappet head 1 is not tightened also, busbar joint bolt 15 is also in releasing orientation, the connection busbar of N, A, B, C phase
Gap between 12 and joint busbar 13 is also in maximum state, and impedance value is also maximum, therefore the voltage u detectedN、
uA、uB、uCMore than upper voltage limit uT1, integrated transporting discharging A5、A6、A7、A8All export high level, diode D2、D3、D4、D5Conducting, and
Relay KN、KA、KB、KCCoil no power, therefore, relay KN、KA、KB、KCNormally closed switch closure, normal open switch open.
In output voltage uN、uA、uB、uCWhile input single-phase impedance is with upper limit comparing unit, voltage uA、uB、uC
Input to three phase connection approximately equal comparing unit, voltage uA、uB、uCRespectively as subtracter S1、S2、S3Anti-phase input electricity
Pressure, uB、uC、uARespectively as subtracter S1、S2、S3Homophase input voltage, so as to respectively obtain output voltage u1、u2、u3, electricity
Press u1、u2、u3It is respectively connected to integrated transporting discharging A12、A13、A14Inverting input, while being used as integrated transporting discharging A12、A13、A14It is same
Mutually input.By voltage u1、u2、u3Respectively with the second adjustable resistance device RP2Adjust obtained setting voltage uT2Make comparisons, for true
Determine A, B, C phase impedance whether approximately equal, the magnitude of voltage after approximately equal is not subtracted each other then can be than larger.When comparing,
If u1More than or equal to uT2, then integrated transporting discharging A12Export low level, relay KABCoil electricity, relay KABNormal open switch
Closure, normally closed switch is opened；, whereas if voltage u1Less than uT2, then integrated transporting discharging A12Export high level, relay KABLine
Enclose no power, diode D6Conducting.Similarly, if voltage u2More than or equal to uT2, then integrated transporting discharging A13Export low level, relay
KBCCoil electricity, relay KBCNormal open switch is closed；If voltage u3More than or equal to uT2, then integrated transporting discharging A14Export low electricity
It is flat, relay KCACoil electricity, relay KCANormal open switch is closed.At the same time, it is in limit switch SQ and disconnects shape
State, therefore relay KRCoil no power, relay KRNormal open switch is closed, and normal open switch is opened.At the same time, armature electricity
Flow I1It is zero, therefore current transformer L1Output current is zero, so that voltage uI<uT3, integrated transporting discharging A15Export high level, electric current
From diode D9To upstream, relay KICoil no power, therefore relay KINormally closed switch is still in closure state.
Step 3：Start-stop button SB is pressed, it is known that in Fig. 6 in step 2, with the relay on the same branch road of servomotor 8
Device KR、KN、KA、KB、KCNormally closed switch closure, therefore servomotor 8 start rotate, drive tappet head 1 rotate, start to tighten mother
Wire terminal bolt 15.
While busbar joint bolt 15 is tightened, armature electric current I1Input current transformer L1, current transformer L1
The electric current I of output2Resistance R is flowed through, current signal is converted into voltage uISignal, then voltage uIIt is used as integrated transporting discharging A15It is anti-
Phase input voltage；By the 3rd variable resistance RP3To setting value u after regulationT3, it is used as integrated transporting discharging A15Homophase input voltage,
Integrated transporting discharging A15By voltage uIWith setting value uT3Make comparisons, for limiting armature supply size, so as to limit moment of torsion.If anti-phase
Input voltage uILess than homophase input voltage uT3, i.e. uI<uT3, then high level, diode D are exported9Conducting, relay KINo power；
Otherwise output low level, relay KICoil electricity.Armature supply I1It is to start from scratch gradually to increase, therefore u ought be detectedI<
uT3, then integrated transporting discharging A15High level is exported, electric current is from diode D9To upstream, relay KICoil no power, therefore relay
KINormally closed switch is still in closure state.Now, in Fig. 6, relay KN、KA、KB、KC、KINormal open switch all in open mode,
Therefore first, second, the 3rd indicator lamp LAB、LBC、LCAAll do not work；Relay KRNormal open switch in open mode, because
This 4th, the 5th, the 6th, the 7th indicator lamp LN、LA、LB、LCAll do not work.
Step 4：As tappet head 1 tightens the increase of degree, connection resistance RN、RA、RB、RCIt can be gradually reduced, and then can lead
Cause output voltage uN、uA、uB、uCReduce.Once detect voltage uN<uT1, then integrated transporting discharging A5Export low level, relay KN's
Coil electricity, and then make the relay K in Fig. 6NNormally closed switch disconnect, relay KNNormal open switch closure；Once detect
Voltage uA<uT1, then integrated transporting discharging A6Export low level, relay KACoil electricity, and then make the relay K in Fig. 6AIt is normal
Close switch off, relay KANormal open switch closure；Once detect voltage uB<uT1, then integrated transporting discharging A7Export low level,
Relay KBCoil electricity, and then make the relay K in Fig. 6BNormally closed switch disconnect, relay KBNormal open switch closure；
Once detect uC<uT1, then integrated transporting discharging A8Export low level, relay KCCoil electricity, and then make the relay in Fig. 6
KCNormally closed switch disconnect, relay KCNormal open switch closure.
If detecting voltage u1≥uT2, then integrated transporting discharging S12Export low level, relay KABCoil electricity, and then
Make the relay K in Fig. 6ABNormal open switch closure；If detecting voltage u1<uT2, then integrated transporting discharging S12Export high level,
Electric current is from diode D6To upstream, relay KABCoil no power, therefore the relay K in Fig. 6ABNormal open switch still in
Off-state.If detecting voltage u2≥uT2, then integrated transporting discharging S13Export low level, relay KBCCoil electricity, and then
Make the relay K in Fig. 6BCNormal open switch closure；If detecting voltage u3≥uT2, then integrated transporting discharging S14Export low level,
Relay KCACoil electricity, and then make the relay K in Fig. 6CANormal open switch closure.
If detecting voltage uI≥uT3, then integrated transporting discharging A15Export low level, relay KICoil electricity, so make after
Electrical equipment KINormally closed switch disconnects.
Step 5：As relay KN、KA、KB、KC、KICoil all electric, then relay KN、KA、KB、KC、KINormally closed open
Close and open simultaneously, now, show output voltage uN、uA、uB、uCRespectively less than upper voltage limit uT1, then the branch road where servomotor 8
Disconnect, servomotor 8 stops operating, tappet head 1 stops tightening bus bolt 15.
Meanwhile, relay KN、KA、KB、KC、KINormal open switch all close, if now relay KABCoil obtain electric,
Then relay KABNormal open switch closure, first indicator lamp LABIt is bright；If relay KBCCoil obtain electric, then relay KBC
Normal open switch closure, second indicator lamp LBCIt is bright；If relay KBCCoil obtain electric, then relay KBCNormal open switch
Closure, the 3rd indicator lamp LBCIt is bright.
, whereas if relay KN、KA、KB、KC、KICoil also not all it is electric, show output voltage uN、uA、uB、uCGreatly
In equal to upper voltage limit uT1, first, second, the 3rd indicator lamp LAB、LBC、LCAAll without bright.Now, if moment of torsion is super
Cross upper torque limit, limit switch SQ closures, relay KRCoil obtain electric, relay KRNormally closed switch disconnect, servomotor 8
Branch road disconnect, servomotor 8 stops operating, and tappet head 1 stops tightening bus bolt 15.Meanwhile, relay KRNormally opened open
Close and close, now if relay K in Fig. 6NCoil also not electric, then relay KNNormally closed switch still close, the 4th
Indicator lamp LNIt is bright；If relay KACoil also not electric, then relay KANormally closed switch still close, the 5th instruction
Lamp LAIt is bright；If relay KBCoil also all electric, then relay KBNormally closed switch still close, the 6th indicator lamp LB
It is bright；If relay KCCoil also not electric, then relay KCNormally closed switch still close, the 7th indicator lamp LCIt is bright.
When servomotor 8 has stopped operating, the light on and off situation of seven indicator lamps is recorded, start button SB is then decontroled,
Busbar is checked according to seven indicator lamps.Seven LED lights are all for pointing out problem existence position, if seven indicator lamps are all
Do not work, then illustrate that busbar joint has been tightened.If first indicator lamp LABIt is bright, then illustrate the not approximate phase of the phase of impedance of A, B joint two
Deng disconnecting after start button SB, the problem of checking between not approximately equalised A, B two-phase busbar joint；If second instruction
Lamp LBCIt is bright, then illustrate B, C two-phase joint impedance not approximately equal, disconnect after start button SB, check not approximately equalised B, C two
The problem of between phase busbar joint；If the 3rd indicator lamp LCAIt is bright, then illustrate C, A two-phase joint head impedance not approximately equal,
Disconnect after start button SB, the problem of checking between not approximately equalised C, A two-phase busbar joint.First, second, the 3rd
Individual indicator lamp LAB、LBC、LCALight on and off be independent of each other, and first, second, the 3rd indicator lamp LAB、LBC、LCAWhen bright, the
Four to the 7th indicator lamp LN、LA、LB、LCWill not be bright.If the 4th indicator lamp LNIt is bright, illustrate that N phase impedances are larger,
Through more than setting value, disconnecting after start button SB, the problem of checking N phase busbar joints；If the 5th indicator lamp LAIt is bright, then A
Phase impedance is larger, the problem of checking A phase joints；If the 6th indicator lamp LBBright, then B phases impedance is larger, then examines
The problem of looking into B phase busbar joints；If the 7th indicator lamp LCBright, then C phases impedance is larger, then checks C phase busbar joints
The problem of.4th to the 7th indicator lamp LN、LA、LB、LCLight on and off do not influence, the 4th to the 7th indicator lamp LN、LA、
LB、LCWhen bright, first to the 3rd indicator lamp LAB、LBC、LCAWill not be bright.
Claims (8)
1. a kind of busbar joint bolt tightens intelligent controlling device, tappet head is enclosed on outside the head of busbar joint bolt and through moment of torsion
Limiter is fixedly and coaxially connected the output shaft of servomotor, and torque limiter is provided with control limit switch, it is characterized in that：Bus
A, B, C, N tetra- of joint are mutually each defeated through corresponding wire a, b, c, d and common wire e jointing impedance collection units
Enter end, the output end of impedance collecting unit connects single-phase impedance and upper limit comparing unit and three phase connection impedance respectively
The input of approximately equal comparing unit, the output end of single-phase impedance and upper limit comparing unit is through corresponding four relays
KN、KA、KB、KCServo motor control unit is connected, the output end of three phase connection impedance approximately equal comparing unit is through corresponding three
Individual relay KAB、KBC、KCAServo motor control unit is connected, servo motor control unit connects start-stop button and described respectively
Servomotor, servo motor control unit passes through relay KRConnect the limit switch.
2. busbar joint bolt according to claim 1 tightens intelligent controlling device, it is characterized in that：The servomotor control
Unit processed includes current transformer L1, integrated transporting discharging A15With relay KI, the termination power of start-stop button one, other end parallel connection three
Current transformer L is sequentially connected in series on branch road, first branch road1First siding ring, servomotor, relay KR、KINormally closed open
Close；Relay KN、KA、KB、KCNormally closed switch be all connected in parallel on relay KINormally closed switch two ends, current transformer it is secondary
Lateral coil one end is grounded, another termination integrated transporting discharging A15Inverting input, resistance R is connected in parallel on the secondary side line of current transformer
The two ends of circle；The resistance of 3rd variable resistance is serially connected between+5V power supplys and ground, and its slide plate joint meets integrated transporting discharging A15Same phase
Input, integrated transporting discharging A15Output relay termination KIOne end of coil, relay KIThe another of coil terminates at 5V power supplys,
Relay KIOne diode of coil two ends parallel connection；Relay K is sequentially connected in series on Article 2 branch roadN、KA、KB、KC、KINormally opened open
Close, relay KIThe other end of normal open switch connect first indicator lamp L respectivelyABWith relay KABNormal open switch series connection
Branch road, second indicator lamp LBCWith relay KBCThe series arm of normal open switch, the 3rd lamp LCAWith relay KCAIt is normally opened
The series arm of switch；Article 3 branch routing relay KRNormal open switch, the 4th indicator lamp LN, relay KNNormally closed open
Pass is sequentially connected, the 5th indicator lamp LAWith relay KAThe series arm of normally closed switch, the 6th indicator lamp LBAnd relay
KBThe series arm of normally closed switch, the 7th indicator lamp LCWith relay KCNormally closed switch series arm each respectively simultaneously
It is associated in the 4th indicator lamp LNWith relay KNNormally closed switch series arm two ends.
3. busbar joint bolt according to claim 1 tightens intelligent controlling device, it is characterized in that：The impedance is adopted
Collecting unit includes four output current size identical current sources and four integrated transporting discharging A1、A2、A3、A4, the one of each current source
End be connected to the in-phase input end of a corresponding integrated transporting discharging between wire a, b, c, d of corresponding phase, current source it is another
Terminate between wire e and ground, each integrated transporting discharging A1、A2、A3、A4Inverting input be connected with output end, each integrated fortune
Put A1、A2、A3、A4Accordingly export a voltage uA、uB、uC、uN。
4. busbar joint bolt according to claim 3 tightens intelligent controlling device, it is characterized in that：The single-phase joint resistance
It is anti-to include four integrated transporting discharging A with upper limit comparing unit5、A6、A7、A8, four diode and first variable resistances,
The resistance of one variable resistance is serially connected between+5V power supplys and ground, the slide plate joint of variable resistance be connected on simultaneously four it is integrated
Amplifier A5、A6、A7、A8Inverting input, the voltage u of impedance collecting unit outputN、uA、uB、uCOne a pair respectively
Should four integrated transporting discharging A of ground input5、A6、A7、A8In-phase input end, four integrated transporting discharging A5、A6、A7、A8Output end each one
An one correspondingly connected relay KN、KA、KB、KCOne end of coil, relay KN、KA、KB、KCAnother termination+5V electricity of coil
Source, a two ends diode in parallel for each relay coil.
5. busbar joint bolt according to claim 3 tightens intelligent controlling device, it is characterized in that：The three phase connection resistance
Anti- approximately equal comparing unit includes three subtracter S1、S2、S3, three integrated transporting discharging A12、A13、A14, three diodes and one
Individual the second adjustable resistance device, the voltage u of the impedance collecting unit outputA、uB、uCThree subtractions are inputted correspondingly
Device S1、S2、S3, subtracter S1、S2、S3The voltage u of output1、u2、u3It is integrated transporting discharging A respectively12、A13、A14Anti-phase input,
The resistance of two variable resistances is serially connected between+5V power supplys and ground, and its slide plate joint is connected on integrated transporting discharging A12、A13、A14Same phase
Input, integrated transporting discharging A12、A13、A14Output end respectively correspondingly connect relay KAB、KBC、KCAOne end of coil, relay
Device KAB、KBC、KCAAnother termination+5V power supplys of coil, each relay KAB、KBC、KCAThe two ends of a coil diode in parallel.
6. a kind of busbar joint bolt as claimed in claim 2 tightens the control method of intelligent controlling device, it is characterized in that tool
There are following steps：
A, the phase of impedance collecting unit collection busbar joint A, B, C, N tetra- impedance RA、RB、RC、RN, output voltage uN、
uA、uB、uC；As tappet head 1 tightens the increase of degree, impedance RN、RA、RB、RCIt is gradually reduced, output voltage uN、uA、uB、
uCAlso it is gradually reduced；
B, voltage uN、uA、uB、uCInput single-phase impedance and upper limit comparing unit, single-phase impedance and upper limit comparing unit
By voltage uN、uA、uB、uCRespectively with the upper voltage limit u of settingT1Make comparisons, if voltage uN、uA、uB、uCMore than or equal to above rationing the power supply
Press uT1, then corresponding relay KN、KA、KB、KCCoil no power, if instead voltage uN、uA、uB、uCLess than upper voltage limit
uT1, then corresponding relay KN、KA、KB、KCCoil electricity；Meanwhile, voltage uA、uB、uCInput to three phase connection approximately equal
Comparing unit, subtracts each other out of phase two voltage through three subtracters two-by-two, and three subtracters export corresponding voltage u1、u2、
u3, by voltage u1、u2、u3Respectively with setting voltage uT2Make comparisons, if voltage u1、u2、u3More than or equal to setting voltage uT2, then it is right
The relay K answeredAB、KBC、KCACoil electricity, conversely, then corresponding relay KAB、KBC、KCACoil no power；Make spacing
Switch off, relay KRCoil no power；
The armature supply of servomotor is converted into voltage u by C, servo motor control unitI, and by voltage uIWith setting voltage uT3
Make comparisons, if voltage uIMore than or equal to setting voltage uT3, relay KICoil electricity, conversely, relay KICoil no power；
If D, relay KN、KA、KB、KC、KICoil all it is electric, servomotor stops operating, tappet head stop tighten bus
Bolt；If relay KN、KA、KB、KC、KICoil also not all it is electric, if now the moment of torsion of torque limiter exceed moment of torsion
The upper limit, limit switch SQ closures, relay KRCoil obtain electric, servomotor stops operating.
7. busbar joint bolt according to claim 6 tightens the control method of intelligent controlling device, it is characterized in that：Step
In D, if the moment of torsion of torque limiter is not less than upper torque limit, relay KRNormally closed switch closure, relay KN、KA、KB、
KC、KIFive normally closed switch in any one normally closed switch close, servomotor remains in operation, and five normally closed switch are simultaneously disconnected
Open, servomotor stops operating.
8. busbar joint bolt according to claim 7 tightens the control method of intelligent controlling device, it is characterized in that：Servo
During motor stalls, if seven indicator lamps all do not work, busbar joint has been tightened；If first indicator lamp LABIt is bright, then
The impedance of A, B two-phase joint not approximately equal, second indicator lamp LBCBright then B, C two-phase joint impedance not approximately equal, the 3rd
Indicator lamp LCABright then C, A two-phase joint impedance not approximately equal；If the 4th indicator lamp LNBright then N phases impedance is big, the
Five indicator lamp LABright then A phases impedance is big, the 6th indicator lamp LBBright then B phases impedance is big, the 7th indicator lamp LCIt is bright
Then C phases impedance is big.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710464589.4A CN107234427B (en) | 2017-06-19 | 2017-06-19 | Busbar joint bolt tightens intelligent controlling device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710464589.4A CN107234427B (en) | 2017-06-19 | 2017-06-19 | Busbar joint bolt tightens intelligent controlling device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107234427A true CN107234427A (en) | 2017-10-10 |
| CN107234427B CN107234427B (en) | 2019-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710464589.4A Active CN107234427B (en) | 2017-06-19 | 2017-06-19 | Busbar joint bolt tightens intelligent controlling device and method |
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| CN (1) | CN107234427B (en) |
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| CN108519516A (en) * | 2018-04-16 | 2018-09-11 | 江苏大学 | A kind of busbar joint micro-ohm grade impedance online test method and device |
| CN110103171A (en) * | 2019-04-15 | 2019-08-09 | 无锡智动力机器人有限公司 | A method of the control fastening torque of bolt based on impedance control principle |
| CN110441043A (en) * | 2019-08-15 | 2019-11-12 | 西京学院 | A kind of electric lock screw tool stripped thread detection system and method based on motor characteristic |
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| CN108519516A (en) * | 2018-04-16 | 2018-09-11 | 江苏大学 | A kind of busbar joint micro-ohm grade impedance online test method and device |
| CN110103171A (en) * | 2019-04-15 | 2019-08-09 | 无锡智动力机器人有限公司 | A method of the control fastening torque of bolt based on impedance control principle |
| CN110441043A (en) * | 2019-08-15 | 2019-11-12 | 西京学院 | A kind of electric lock screw tool stripped thread detection system and method based on motor characteristic |
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|---|---|
| CN107234427B (en) | 2019-02-01 |
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Address after: No. 508, GANGLONG Road, Yangzhong Economic Development Zone, Zhenjiang City, Jiangsu Province, 212200 Patentee after: Eaton bus (Jiangsu) Co.,Ltd. Address before: No. 508, GANGLONG Road, Yangzhong Economic Development Zone, Zhenjiang City, Jiangsu Province, 212200 Patentee before: Jiangsu Yineng Bus Co.,Ltd. |
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