CN2094540U

CN2094540U - Speed controller for lifting structure

Info

Publication number: CN2094540U
Application number: CN 91216156
Authority: CN
Inventors: 张艳秋; 刘进
Original assignee: Jia Guochun
Current assignee: Jia Guochun
Priority date: 1991-06-18
Filing date: 1991-06-18
Publication date: 1992-01-29

Abstract

The utility model relates to a speed controller for a lifting structure, mainly comprising a motor with double rotors (DS), an eddy current braking (WZ), a speed indicating generator (CSF), a brake (TS) and an inverse vehicle motor (DF). A speed regulation control circuit comprises a speed setting component element (1), an automatic tracking setting speed component element (2), a steady flow component element (3), an operating point setting component element (4), a phase shift triggering (5), a silicon controlled rectification component element (6), an electric current feedback element (7), an output shaft turning judgment component element (8), an overspeed protection component element (9) and a magnetic-loss protection component element (10). The utility model overcomes the disadvantages of frequent starting and poor performance of low speed positioning of a present crane and satisfies the requirements of simple control, smooth lifting and exact positioning. Two speed regulation methods of step speed regulation and stepless speed regulation can be realized; the utility model is an ideal control device with ac speed regulation.

Description

Speed controller for lifting structure

The utility model belongs to automation field, relates to a kind of lifting mechanism speed-regulating control device.

The most speed regulation devices that adopt AC induction motor rotor crosstalk resistance of existing hoisting crane, this device speed adjustable range is little, particularly low-speed performance is very poor, will lean on operating personal repeatedly to put car when weight is in place finishes, and often be in the state of kinematic motion that positive and negative car replaces, particularly lifting mechanism load change scope is very big, and the speed control under the various load, promote balance, in place accurately, be again that existing hoisting crane is implacable, because motor opens, brakes frequent, switch current is big, has had a strong impact on the service life of motor and mechanical component.

The purpose of this invention is to provide a kind ofly control simply, steadily hoist, lifting mechanism speed-regulating control device that accurately in place, speed adjusting performance is good, major control to as if the lifting mechanism that is integrated of double-rotor machine and eddy-current brake.

The lifting mechanism of this control setup is mainly by spinner motor (DS); eddy-current brake (WZ); tachogenerator (CSF); anti-vehicle motor (DF); brake (TS) is formed (in Fig. 1 frame of broken lines); its speed-regulating control circuit is by the speed setting link (1) of given speed on demand; can follow the automatic tracking setting speed link (2) of setting speed automatically; the energy compensation of eddy currents drg temperature variant current stabilization link of exciting current (3); the operation point that can realize preset voltage is put and is decided link (4); the phase shift that can control the silicon control trigger angle triggers link (5); can import the silicon controlled rectifier link (6) of exciting current to eddy-current brake; can make the current feedback link (7) of exciting current signal feedback to magnet excitation and field loss protection executive circuit; can react turning to that output shaft turns to and judge feedback element (8); can react the overspeed protection link (9) of the hypervelocity that descends; can react the field loss protection link (10) that loses exciting current forms; wherein; eddy-current brake (WZ); anti-vehicle motor (DS); tachogenerator (CSF); brake (TS) is contained on the output shaft of double-rotor machine (DS); the speed setting link (1) of its speed-regulating control circuit; automatic tracking setting speed link (2); current stabilization link (3); the operation point is put and is decided link (4); phase shift triggers link (5); silicon controlled rectifier link (6) front and back successively connects; the output one tunnel of controlled rectification link (6) is to current feedback link (7); one the road to eddy-current brake (WZ); the output one tunnel of current feedback link (7) is to current stabilization link (3); one the road to field loss protection link (10); another voltage signal of field loss protection link (10) is put from the operation point and is decided link (4); the voltage of tachogenerator (CSF) is exported to turn to and is judged feedback element (8); turn to the output one road of judging feedback element (8) to overspeed protection link (9); one the road to speed setting link (1); one the road to automatic tracking setting speed link (2), speed protection link (9); the output signal control motor power of field loss protection link (10).

The speed setting link (1) of this device is by rising source switch K ₁, decline source switch K ₂, the step-governor d K switch ₃～K ₅, divider resistance R ₁, R ₂, R ₆, the step-governor d resistance R ₃～R ₅(or R ₃'～R ₅', or infinite speed variation potential device R _W1) and IC ₁, R ₇, R ₈, R ₉The reverser of forming, IC ₂, R ₁₀, R ₁₁The comparator of forming, NAND gate IC ₃, not gate IC ₄, divider resistance R ₁₂, R ₁₃, field effect transistor T ₁, magnet excitation carries out relay J ₁With its open contact KJ ₁Form Deng element, Fig. 3 shows speed setting link basic circuit, wherein, and rising source switch K ₁Or decline source switch K ₂An end and dc supply link K during rising ₁Connect the negative pole of dc supply, K during decline ₂Connect the positive pole of dc supply, K ₂The other end through R ₁, R ₂, in parallel R ₃, R ₄, R ₅(R wherein ₃String K ₃, R ₄String K ₄, R ₅String K ₅, or series connected R ₃', R ₄', R ₅' R wherein ₃' and K ₃', R ₄' and K ₄', R ₅' and K ₅', or potential device R _W1) and R ₆Connecting to neutral, K ₁The other end directly and R ₂Connect, magnet excitation is carried out the open contact KJ of relay ₁Be connected across resistance R ₂Two ends, from R ₆The non-zero end be that the P point takes out voltage signal, the one tunnel through R ₇Be connected to amplifier IC ₁Negative input end, IC ₁Positive input terminal through R ₈Connecting to neutral, amplifier IC ₁Negative input end and mouth cross-over connection one feedback resistance R ₉, amplifier IC ₁Mouth B and B ' of automatic tracking setting speed link (2) link, another road is through resistance R ₁₀Meet comparator IC ₂Negative input end, comparator IC ₂Positive input terminal through R ₁₁Connecting to neutral, IC ₂Mouth connect NAND gate IC ₃An input end, IC ₃Another input end A ' judge IC in the feedback element with turning to ₁₄Output terminals A link IC ₃Output connect not gate IC ₄Input end, IC ₄Output through R ₁₂, R ₁₃Connecting to neutral is got R ₁₂, R ₁₃Between voltage division signal be connected to field effect transistor T ₁Grid, field effect transistor T ₁The source electrode connecting to neutral, T ₁Drain electrode carry out relay coil J through magnet excitation ₁Connect the working power positive pole.

The operation point of this device is put and is decided link by amplifier IC ₈, resistance R ₂₁～R ₂₅, potential device R _W2The rising operation point of forming is put and is decided circuit, by amplifier IC ₉, resistance R ₂₆～R ₃₀, potential device R _W3The decline operation point of forming is put and is decided circuit, and wherein, the output one tunnel of current stabilization link (3) is through resistance R ₂₁Cause amplifier IC ₈Positive input terminal, resistance R ₂₄One termination amplifier IC ₈Negative terminal, another termination potential device R _W2The adjustable side, potential device R _W2The negative pole of two fixed ends, one termination working power, the other end is through resistance R ₂₅Connecting to neutral, resistance R ₂₃Be connected across amplifier IC ₈Negative input end and mouth, resistance R ₂₂One termination IC ₈Positive input terminal, other end connecting to neutral, amplifier IC ₈Output through K switch ₇Mouth F to this link; Another road is through resistance R ₂₆Be connected to amplifier IC ₉Positive input terminal, resistance R ₂₉One termination IC ₉Negative input end, another termination potential device R _W3The adjustable side, potential device R _W3The negative pole of two fixed ends, one termination working power, an end is through resistance R ₃₀Connecting to neutral, resistance R ₂₈Be connected across IC ₉Negative input end and mouth, resistance R ₂₇One termination IC ₉Positive input terminal, other end connecting to neutral, amplifier IC ₉Output through K ₈Be connected to the mouth F of this link.

Feedback element (8) is judged in turning to of this device, is by comparator IC ₁₀～IC ₁₂, input resistance R ₃₄～R ₃₆, stabilivolt D ₁～D ₃, resistance R ₃₇～R ₄₁, differential capacitance C ₃, differential resistance R ₄₂, d type flip flop IC ₁₃, IC ₁₄, field effect transistor T ₂, turn to and judge to carry out relay J ₂Formation turns to executive circuit, by rectifier diode D ₄～D ₉, divider resistance R ₄₃, R ₄₄, amplifier IC ₁₅, filter capacitor C ₄, C ₅, resistance R ₄₅, R ₄₆Constitute active low-pass filter circuit, by amplifier IC ₁₆, resistance R ₄₇～R ₄₉The reversers that constitute etc. are formed, wherein, and the three-phase voltage signal V that attracts by tachogenerator CSF _A', V _B', V _C', each is mutually respectively through input resistance R ₃₄, R ₃₅, R ₃₆Be connected to comparator IC ₁₀, IC ₁₁, IC ₁₂Negative input end, stabilivolt D ₁, D ₂, D ₃Be connected across comparator IC respectively ₁₀, IC ₁₁, IC ₁₂Positive and negative input end between, D ₁, D ₂, D ₃The negative pole connecting to neutral, and connect comparator IC with the comparator positive input terminal ₁₀And IC ₁₁Output be connected to d type flip flop IC ₁₃3 ends and IC ₁₄11 ends, comparator IC ₁₂Output is through differential capacitance C ₃, differential resistance R ₄₂Connecting to neutral is from resistance R ₄₂Non-zero end and d type flip flop IC ₁₃4 ends connect comparator IC ₁₀～IC ₁₂Output again respectively through resistance R ₃₇～R ₃₉Connect the positive pole of working power, binary pair IC ₁₃1 end be mouth and binary pair IC ₁₄9 ends link IC ₁₄13 be that mouth is through resistance R ₄₀, R ₄₁The series connection connecting to neutral is from R ₄₁The non-zero end component voltage of drawing be connected to field effect transistor T ₂Grid, T ₂Drain electrode through turning to the coil J that judge to carry out relay ₂Connect T with working power is anodal ₂The source electrode connecting to neutral, from IC ₁₄The A ' that draws in a signal A and the speed setting link (1) of mouth 13 join IC ₁₃5,14 termination working powers, IC ₁₃6 ends and

IC

₁₄7,8,10 terminations zero; Voltage signal V _A', V _B', V _C' another road is through D ₄～D ₉Three phase rectifier and R ₄₃, R ₄₄After the dividing potential drop, be connected to by resistance R ₄₅, R ₄₆, capacitor C ₄, C ₅Amplifier IC ₁₅The active low-pass filter of forming, amplifier IC ₁₅Output one road connecting resistance R ₄₇～R ₄₉, amplifier IC ₁₆The reverser that constitutes is through relay J ₂Normally closed contact KJ ₂' connecting with the mouth C of this link, another road is directly through relay J ₂Normal opened contact KJ ₂" C connects with mouth.

Other link of the present utility model is custom circuit.

Use the utility model can guarantee that weight hoists steadily, do not glide, moment that descends can prevent that lifting velocity is too fast, spend when slow for underloading and empty hook speed of fall and to give an original thrust with anti-vehicle motor, make it normal downslide, work continuously, need not put car, easy and simple to handle, and change AC tachometer generator into DC tachometer generator and use, make control circuit simple, reaction is fast, accurate, and because linear signal has been adopted in the input of current feedback link, the assurance system regulates steadily, and has avoided the influence of temperature traverse to speed.

Embodiment of the present utility model is referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8.

Fig. 1 is a functional block diagram of the present utility model.

Its lifting mechanism is mainly by spinner motor (DS); eddy-current brake (WE); the anti-vehicle motor of tachogenerator (CSF) (DF); brake (TS) is formed (in Fig. 1 frame of broken lines); its speed-regulating control circuit is by the speed setting link (1) of given speed on demand; can follow the automatic tracking setting speed link (2) of setting speed automatically; can compensation give the temperature variant current stabilization link of eddy-current brake exciting current (3); the operation point that can realize preset voltage is put and is decided link (4); the phase shift that can control the silicon control trigger angle triggers link (5); can import the silicon controlled rectifier link (6) of exciting current to eddy-current brake; can make the current feedback link (7) of exciting current signal feedback to magnet excitation and field loss protection executive circuit; can react output shaft to turn to feedback element (8); can react the overspeed protection link (9) of the hypervelocity that descends; can react the field loss protection link (10) that loses exciting current forms; wherein; eddy-current brake (WZ); anti-vehicle motor (DS); tachogenerator (CSF); brake (TS) is contained on the output shaft of double-rotor machine (DS); the speed setting link (1) of its speed-regulating control circuit; automatic tracking setting speed link (2); current stabilization link (3); the operation point is put and is decided link (4); phase shift triggers link (5); silicon controlled rectifier link (6) front and back successively connects; the output one tunnel of controlled rectification link (6) is to current feedback link (7); one the road to eddy-current brake (WZ); the output one tunnel of current feedback link (7) is to current stabilization link (3); one the road to field loss protection link (10); another voltage signal of field loss protection link (10) is put from the operation point and is decided link (4); the voltage of tachogenerator (CSF) is exported to turn to and is judged feedback element (8); turn to the output one road of judging feedback element (8) to overspeed protection link (9); one the road to speed setting link (1); one the road to automatic tracking setting speed link (2), speed protection link (9); the output signal control motor power of field loss protection link (10).

Fig. 2 is electric power system figure of the present utility model, be made up of double-rotor machine (DS), eddy-current brake (WZ), tachogenerator (CSF), brake (TS), anti-vehicle motor (DF), power supply etc., tachogenerator (CSF) is output as voltage signal V _A, V _B, V _CDouble-rotor machine (DS), eddy-current brake (WZ), tachogenerator (CSF), brake (TS), anti-vehicle motor (DF) are contained on the same axle.The eddy-current brake exciting current is supplied with by mouth E, the N of Fig. 7.

Power supply passes through knife switch DK feed system overcurrent relay 1,2GLJ coil by external three plase alternating current, coil one termination knife switch DK first, the third phase lower end, another termination open contact (ZC) first, third phase top, second phase open contact upper end directly links to each other with DK second lower end mutually, three road signals are exported in the below of three-phase contact, one the tunnel removes to control double-rotor machine DS, and the lower end of ZC three-phase direct and double-rotor machine links; One the tunnel removes to control brake TS, wherein one, three-phase passes through K switch ₉, K ₁₀TS connects with brake, and the second direct mutually second phase lower end from the ZC open contact attracts; One the tunnel removes to control anti-vehicle motor DF, wherein one, three-phase is by anti-stopping switch K ₆, K ₆' draw reflexive vehicle motor DF, second phase then attracts from the second phase lower end of normally open contact ZC, when electric current surpasses permissible value, overcurrent protection relay 1GLJ, 2GLJ action, open contact ZC disconnects, and cuts off system power supply.When eddy-current brake loses excitation, the field loss protection relay J ₅Action, open contact KJ ₅Disconnect, cut off system power supply.When descending hypervelocity, overspeed protecting relay J ₆Action, open contact KJ ₆Disconnect, cut off system power supply.

Fig. 3 is setting speed link schematic circuit diagram, has set rising, the friction speed when descending.

By rising source switch K ₁, decline source switch K ₂, the step-governor d K switch ₃～K ₅, divider resistance R ₁, R ₂, R ₆, the step-governor d resistance R ₃～R ₅(or R ₃'～R ₅', or infinite speed variation potential device R _W1) and IC ₁, R ₇, R ₈, R ₉The reverser of forming, IC ₂, R ₁₀, R ₁₁The comparator of forming, NAND gate IC ₃, not gate IC ₄, divider resistance R ₁₂, R ₁₃Field effect transistor T ₁, magnet excitation is carried out relay J ₁With its open contact KJ ₁Form Deng element, Fig. 3 shows speed setting link basic circuit, wherein, and rising source switch K ₁Or decline source switch K ₂An end and dc supply link K during rising ₁Connect the negative pole of dc supply, K during decline ₂Connect the positive pole of dc supply, K ₂The other end through R ₁, R ₂, in parallel R ₃, R ₄, R ₅(R wherein ₃String K ₃, R ₄String K ₄, R ₅String K ₅, or series connected R ₃', R ₄', R ₅' R wherein ₃' and K ₃', R ₄' and K ₄', R ₅' and K ₅', or potential device R _W1) and R ₆Connecting to neutral, K ₁The other end directly and R ₂Connect, magnet excitation is carried out the open contact KJ of relay ₁Be connected across resistance R ₂Two ends, from R ₆The non-zero end be that the P point takes out voltage signal, the one tunnel through R ₇Be connected to amplifier IC ₁Negative input end, IC ₁Positive input terminal through R ₈Connecting to neutral, amplifier IC ₁Negative input end and mouth cross-over connection one feedback resistance R ₉, amplifier IC ₁Mouth B and B ' of automatic tracking setting speed link (2) link, another road is through resistance R ₁₀Meet comparator IC ₂Negative input end, comparator IC ₂Positive input terminal through R ₁₁Connecting to neutral, IC ₂Mouth connect NAND gate IC ₃An input end, IC ₃Another input end A ' with turn to IC in the feedback element ₁₄Output terminals A link IC ₃Output connect not gate IC ₄Input end, IC ₄Output through R ₁₂, R ₁₃Connecting to neutral is got R ₁₂, R ₁₃Between voltage division signal be connected to field effect transistor T ₁Grid, field effect transistor T ₁The source electrode connecting to neutral, drain electrode is carried out relay coil J through magnet excitation ₁Connect the working power positive pole.

This link can realize two kinds of forms of step speed regulation and infinite speed variation because the circuit in the frame of broken lines among Fig. 3 is changed, and the resistance of step speed regulation is divided into series connection and is connected in parallel, (a) resistance R in the frame of broken lines ₃～R ₅For being connected in parallel, (b) resistance R in the frame of broken lines ₃'～R ₅' for being connected in series, that (c) use in the frame of broken lines is potential device R _W1Replace resistance to realize infinite speed variation, when the uphill process weight has a declining tendency, the magnet excitation relay J ₁Action, contact KJ ₁Closure reduces P point current potential, and output increases, and reaches the purpose of magnet excitation, thereby has prevented scooter under the weight.

Fig. 4 is that automatic tracking setting speed link (2), current stabilization link (3), operation point are put the schematic circuit diagram of deciding link (4), current feedback link (7).

Automatic tracking setting speed link (2) is by resistance R ₁₃～R ₁₆, amplifier IC ₅, capacitor C proportion of composing integral amplifier, wherein, automatic tracking setting speed link has two input ends, the C ' end of this link of output C termination of Fig. 5, the B ' end of this link of B termination of Fig. 3, C ' is through R ₁₅With amplifier IC ₅Negative input end connect, B ' is through R ₁₄With amplifier IC ₅Negative input end connect R ₁₆, C ₁Be connected across amplifier IC after the series connection ₅Negative input end and mouth between, amplifier IC ₅Positive input terminal through resistance R ₁₃Connecting to neutral.

Current feedback link (7) is by resistance R ₃₁～R ₃₄, amplifier IC ₇Form, wherein, the signal next by the E point of Fig. 7 connects after resistance R with the E ' of this link ₃₁Input to amplifier IC ₇Negative input end, the signal that is come by the D point of Fig. 7 connects after resistance R with the D ' of this link ₃₂Input to amplifier IC ₇Positive input terminal, resistance R ₃₄Be connected across amplifier IC ₇Negative input end and mouth between, amplifier IC ₇Positive input terminal through resistance R ₃₃Connecting to neutral.Amplifier IC ₇Output one road to current stabilization link (3), the one road to field loss protection link (10) as Fig. 8.

Current stabilization link (3) is by resistance R ₁₇～R ₂₀, amplifier IC ₆, C ₂The proportion of composing integral amplifier, wherein, the current stabilization link has two input ends, IC ₅Output through resistance R ₁₇Input to amplifier IC ₆Negative input end, the output of current feedback link (7) is through resistance R ₂₀Input to IC ₆Negative input end, resistance R ₁₉With capacitor C ₂Be connected across IC after the series connection ₆Negative input end and mouth between, amplifier IC ₆Positive input terminal through resistance R ₁₈Connecting to neutral.

The operation point is put and is decided link (4) by amplifier IC ₈, resistance R ₂₁～R ₂₅, potential device R _W2The rising operation point of forming is put and is decided circuit, by amplifier IC ₉, resistance R ₂₆～R ₃₀, potential device R _W3The decline operation point of forming is put and is decided circuit, and wherein, the output one tunnel of current stabilization link (3) is through resistance R ₂₁Cause amplifier IC ₈Positive input terminal, resistance R ₂₄One termination amplifier IC ₈Negative terminal, another termination potential device R _W2The adjustable side, potential device R _W2The negative pole of one termination working power, the other end is through resistance R ₂₅Connecting to neutral, resistance R ₂₃Be connected across amplifier IC ₈Negative input end and mouth, resistance R ₂₂One termination IC ₈Positive input terminal, other end connecting to neutral, amplifier IC ₈Output through K switch ₇Mouth F to this link; Another road is through resistance R ₂₆Be connected to amplifier IC ₉Positive input terminal, resistance R ₂₉One termination IC ₈Negative input end, another termination potential device R _W3The adjustable side, potential device R _W3The negative pole of two fixed ends, one termination working power, an end is through resistance R ₃₀Connecting to neutral, resistance R ₂₈Be connected across IC ₉Negative input end and mouth, resistance R ₂₇One termination IC ₉Positive input terminal, other end connecting to neutral, amplifier IC ₉Output through K ₈Be connected to the mouth F of this link.Mouth F of this link and the F ' of Fig. 6, " point links the F of Fig. 8.

Fig. 5 is for turning to the schematic circuit diagram of judging feedback element (8), by comparator IC ₁₀～IC ₁₂, input resistance R ₃₄～R ₃₆, stabilivolt D ₁～D ₃, resistance R ₃₇～R ₄₁, differential capacitance C ₃, differential resistance R ₄₂, d type flip flop IC ₁₃, IC ₁₄, field effect transistor T ₂, turn to and judge to carry out relay J ₂Formation turns to executive circuit, by rectifier diode D ₄～D ₉, divider resistance R ₄₃, R ₄₄, amplifier IC ₁₅, filter capacitor C ₄, C ₅, resistance R ₄₅, R ₄₆Constitute active low-pass filter circuit, by amplifier IC ₁₆, resistance R ₄₇～R ₄₉The reversers that constitute etc. are formed, wherein, and the three-phase voltage signal V that attracts by tachogenerator CSF _A', V _B', V _C', each road is respectively through input resistance R ₃₄, R ₃₅, R ₃₆Be connected to comparator IC ₁₀, IC ₁₁, IC ₁₂Negative input end, stabilivolt D ₁, D ₂, D ₃Be connected across comparator IC respectively ₁₀, IC ₁₁, IC ₁₂Positive and negative input end between, D ₁, D ₂, D ₃The negative pole connecting to neutral and connect comparator IC with the comparator positive input terminal ₁₀And IC ₁₁Output be connected to d type flip flop IC ₁₃3 ends and IC ₁₄11 ends, comparator IC ₁₂Output is through differential capacitance C ₃, differential resistance R ₄₂Connecting to neutral is from resistance R ₄₂Non-zero end and d type flip flop IC ₁₃4 ends connect amplifier IC ₁₀～IC ₁₂Output again respectively through resistance R ₃₇～R ₃₉Connect the positive pole of working power, binary pair IC ₁₃1 end be mouth and binary pair IC ₁₄9 ends link IC ₁₄13 be that mouth is through resistance R ₄₀, R ₄₁The series connection connecting to neutral is from R ₄₁The non-zero end component voltage of drawing be connected to field effect transistor T ₂Grid, T ₂Drain electrode through turning to the coil J that judge to carry out relay ₂Connect T with working power is anodal ₂The source electrode connecting to neutral, from IC ₁₄The A ' that draws in a signal A and the speed setting link (1) of mouth 13 join IC ₁₃5,14 termination working powers, IC ₁₃6 ends and

IC

₁₄7,8,10 terminations zero; Voltage signal V _A', V _B', V _C' another road is through D ₄～D ₉Three phase rectifier and R ₄₃, R ₄₄After the dividing potential drop, be connected to by resistance R ₄₅, R ₄₆, capacitor C ₄, C ₅Amplifier IC ₁₅The active low-pass filter of forming, amplifier IC ₁₅Output one road connecting resistance R ₄₇Meet amplifier IC ₁₆Negative input end, IC ₁₆Positive input terminal through resistance R ₄₈Connecting to neutral, resistance R ₄₉Be connected across IC ₁₆Negative input end and mouth between, IC ₁₆Output through relay J ₂Normally closed contact KJ ₂' connecting with the mouth C of this link, another road is directly through relay J ₂Normal opened contact KJ ₂" C connects with mouth.

Fig. 6 is the schematic circuit diagram of phase shift triggering link (5), triggers ic chip by phase shift ₁₇Comprise potential device R with conventional external circuits element _W4, R _W5, capacitor C ₆～C ₈, resistance R ₅₂～R ₆₀, and photocoupler T ₃, T ₄, penetrate with output resistance R ₅₀, R ₅₁, diode D ₁₀, D ₁₁Form.Wherein, Fig. 4 puts the operation point mouth F that decides link (4) and connects with the input end F ' of this link, through resistance R ₅₅Input to phase shift and trigger ic chip ₁₇9 ends, get with the synchronous AC signal VS of power supply through R ₅₇Input to phase shift and trigger ic chip ₁₇8 ends, IC ₁₇4 ends and 9 ends between the cross-over connection resistance R ₅₈, IC ₁₇9 ends through resistance R ₅₆With potential device R _W4The adjustable side connect R _W4The negative pole of two fixed ends, one termination, 01 termination working powers, IC ₁₇11 ends through C ₆, R ₅₄Connect the working power positive pole, IC ₁₇12 ends through R ₅₄Connect the positive pole of working power,

IC

₁₇5,7 end spaies connect capacitor C ₇And at 7 terminations zero, IC _1.75 ends through R ₅₉Connect the negative pole of working power,

IC

₁₇3,4 end spaies connect capacitor C ₈, IC ₁₇3 ends through resistance R ₆₀, potential device R _W5Connect the working power negative pole, R _W5Adjusting termination working power negative pole, phase shift triggers output one route 1 end of integrated package through R ₅₂To photocoupler T ₃, T ₃Emitter-base bandgap grading through D ₁₀To mouth H, the controllable silicon SCR of H and Fig. 7 ₁Controlled end H ' connection, penetrate with output resistance R ₅₀One termination T ₃Emitter-base bandgap grading, an end the is D " D of map interlinking 7 end; One route phase shift triggers ic chip ₇15 ends through R ₅₃To photocoupler T ₄, T ₄Emitter-base bandgap grading through D ₁₁To mouth G, the controllable silicon SCR of G and Fig. 7 ₂Controlled end G ' connection, penetrate with output resistance R ₅₁One termination T ₃Emitter-base bandgap grading, an end the is D " D of ' map interlinking 7 end.

Fig. 7 is the schematic circuit diagram of silicon controlled rectifier link (6), by controllable silicon SCR ₁, SCR ₂, rectifier diode ZD ₁, ZD ₂, flywheel diode 3D, volt meter

, amperemeter/ammtr

Constitute, wherein controllable silicon SCR ₁, SCR ₂, rectifier diode ZD ₁, ZD ₂Form conventional half control rectifying circuit, flywheel diode is connected across the mouth of rectifying circuit, and amperemeter/ammtr, volt meter are connected across the two ends of flywheel diode, and the negative pole of flywheel diode 3D is mouth D, and the mouth at volt meter two ends is E, N, SCR ₁Controlled end be H ', SCR ₂Controlled end be G '.

Fig. 8 is the schematic circuit diagram of field loss protection link (10), overspeed protection link (9).Field loss protection link (10) is by comparator IC ₁₈, IC ₁₉, NAND gate IC ₂₁, not gate IC ₂₀, IC ₂₂, resistance R ₆₁～R ₇₂, potential device R _W6, diode D ₁₂, field effect transistor T ₅, field loss protection carries out relay J ₅Form, wherein incoming signal causes the L ' end of Fig. 8 through R by the L end of Fig. 4 ₆₁Meet comparator IC ₁₈Negative input end, IC ₁₈Positive input terminal through R ₆₂With R _W6The adjustable side connect R _W6The positive pole, a termination zero of two fixed ends, one termination working power, IC ₁₈Output one road to not gate IC ₂₀Input end, the one tunnel through R ₆₄Connect the positive pole of working power, IC ₂₀Output one tunnel directly to NAND gate IC ₂₁1 end, the one tunnel through reversal connection diode D ₁₂To IC ₂₁2 ends, reversal connection diode D ₁₂Positive pole through R ₆₅Connect with working power is anodal.By Fig. 4 IC ₈, IC ₉Output draw signal F to the F of this link " through R ₆₃To IC ₁₉Positive input terminal, negative input end is through R ₆₉, R ₆₇Connect the positive pole of working power, R ₆₇With R ₆₉Between through R ₇₀Connecting to neutral.IC ₁₉Output and IC ₂₁3 ends connect, it is exported through R ₆₈Connect with the positive pole of working power.Through IC ₂₁Directly arrive not gate IC with the output after non- ₂₂, through resistance R ₇₁, R ₇₂Connecting to neutral, R ₇₂Non-zero termination field effect transistor T ₅Grid, field effect transistor T ₅Drain electrode through the coil J of field loss protection relay ₅Connect the positive pole of working power, field effect transistor T ₅The source electrode connecting to neutral.

Overspeed protection link (9) is by comparator IC ₂₃, resistance R ₇₃～R ₈₁, field effect transistor T ₆, overspeed protection carries out relay coil J ₆Deng composition, wherein, the signal that is attracted by Fig. 5 M point connects with the M ' of this link, through resistance R ₇₄, R ₇₇With comparator IC ₂₃Anode connect resistance R ₇₄, R ₇₇Between through resistance R ₇₈Connecting to neutral, comparator IC ₂₃Negative pole through resistance R ₇₆, R ₇₅Connect the working power positive pole, resistance R ₇₆, R ₇₅Between through resistance R ₇₃Connecting to neutral.IC ₂₃Output one tunnel through resistance R ₇₉Connect the working power positive pole, the one tunnel through resistance R ₈₀, R ₈₁Connecting to neutral, resistance R ₈₁Non-zero termination field effect transistor T ₆Grid, field effect transistor T ₆Drain electrode carry out relay coil J through overspeed protection ₆Connect the positive pole of working power, T ₆The source electrode connecting to neutral.

The amplifier of present embodiment, comparator all connect the positive and negative electrode of working power, and working power is ± 15V, and 1 end in amplifier, the comparator is mouth, and 2 ends are negative input end, and 3 ends are positive input terminal.

When rising (weight or empty hook are arranged), at first close the logical three plase alternating current of disconnecting link of logical Fig. 2, birotor, motor idle running at this moment, operating handle makes the K of Fig. 3 then ₁, K ₃(K ₄, K ₅), Fig. 4 K ₇, Fig. 2 K ₉, K ₁₀Closed simultaneously, K ₁Energized, K ₃(K ₄, K ₅) to current potential of P point, K ₇Make the signal of operation point trigger link, K to phase shift ₉, K ₁₀Brakes on device motor is opened brake, and meanwhile the whirlpool drg adds excitation, begins to rise K ₃, K ₄, K ₅Be the speed of control ascending velocity, K ₃, K ₄, K ₅Closed ascending velocity is the fastest simultaneously.Turning to and be decided to be forward output shaft this moment.

K ₁, K ₃Closed through R ₂, R ₃, R ₆Dividing potential drop is to negative potential of P point, through R ₇, R ₈, R ₉, IC ₁The proportional amplifier output of forming connects with the automatic tracking setting speed link B ' of Fig. 4 through B, passes through resistance R ₁₄To proportional integral (PI) amplifier IC ₅Negative terminal, Fig. 5 output shaft turns to signal C ' that feedback element comes through R ₁₅Input to proportional integral (PI) amplifier IC ₅Negative terminal compare, equate back IC ₅Stop integration, export a unmodified voltage signal to current stabilization link (3), IC ₅Output through R ₁₇Input to IC ₆Negative terminal, the input of current feedback link (7) attracts signal by E, the D of Fig. 7 end and connects with E ', the D ' of this link and carry out differential amplification, E ' is through resistance R ₃₁To amplifier IC ₇Negative input end, D ' is through resistance R ₃₂To amplifier IC ₇Positive input terminal, IC ₇Export a positive voltage through R ₂₀To amplifier IC ₆Negative input end, with IC ₅Output compare IC after the balance ₆Stop unmodified voltage signal of integration output, through R ₂₁Be added to IC ₈Positive input terminal, computing is after K ₇" connect, the signal of F ' is through resistance R with the F of Fig. 8 with the F ' of Fig. 6 by F to export a voltage signal ₅₅To silicon control integrated trigger IC ₁₇9 ends, with the synchronous voltage signal VS of alternating current 220V (excitation source) through resistance R ₅₇To IC ₁₇8 ends work simultaneously, guarantee through signal and the alternating current 220V of the output of H, G end synchronously, H, G end is output as impulse singla and connects with H ', the G ' of Fig. 7 and control controllable silicon SCR ₁, SCR ₂Controlled rectification voltage of E, the N of Fig. 7 end output is to the excitation winding of eddy-current brake simultaneously, produce exciting current, during artificial blocked operation handle, can change the current potential that P is ordered, silicon control phase shift trigger angle is changed, the phase shift trigger angle strengthens, and exciting current rises, and the weight ascending velocity is accelerated, the phase shift trigger angle reduces, and the weight ascending velocity slows down.

During velocity variations, the tachogenerator output voltage changes, and its voltage is through the D of Fig. 5 ₄～D ₉R after the three phase rectifier ₄₃, R ₄₄Dividing potential drop is extremely by R ₄₅, R ₄₆, C ₄, C ₅, IC ₁₅The active low pass of forming is considered the ripple device, and output is through R ₄₇, R ₄₉, IC ₁₆The reverser of forming is to KJ ₂' by C output, tachogenerator signal phase sequence is A, B, C during rising, its signal is by comparator IC ₁₀～IC ₁₂Relatively be input to the d type flip flop IC that connects successively ₁₃, IC ₁₄, IC ₁₄13 end output low levels, T ₂Be in off condition, J ₂Be failure to actuate normally closed contact KJ ₂' be failure to actuate.

If weight has the trend of following scooter during rising, the phase sequence of tachogenerator becomes A, C, B, by comparator IC ₁₀, IC ₁₁, IC ₁₂Relatively, through d type flip flop IC ₁₃, IC ₁₄13 ends output high level, signal is delivered to A ' point of Fig. 4 through the A of Fig. 5, with comparator IC ₂The high level signal of output and non-back IC ₃Output low level, IC ₄The output high level, T ₁Conducting, J ₁Action, KJ ₁Closure, excision R ₂, P point current potential descends, and the output of B point raises, and the output F point current potential of Fig. 4 is raise, and the phase shift trigger angle increases, and exciting current increases, and reaches the purpose of magnet excitation, and weight comes back to propradation.

When weight descended, at this moment double-rotor machine turning to when weight is arranged was identical, and operating handle makes Fig. 3 K ₂, K ₃(K ₄, K ₅), Fig. 4 K ₈, Fig. 2 K ₉, K ₁₀Closed simultaneously, K ₂Energized, K ₃(K ₄, K ₅) to current potential of P point, K ₈Make the signal of operation point trigger link, K to transposition ₉, K ₁₀Brakes on device motor is opened braking mechanism, and meanwhile weight begins to descend K ₃, K ₄, K ₅Be the speed of control weight descending speed, K ₃, K ₄, K ₅Simultaneously closed descending speed is the fastest, the turning to oppositely of output shaft this moment.The eddy-current brake exciting current is less, and weight overcomes the moment of torsion of exciting current generation and descends.

K ₂, K ₃Closed through R ₁, R ₂, R ₅, R ₆Dividing potential drop is to positive potential of P point, through R ₇, R ₈, R ₉, IC ₁The proportional amplifier output of group connects with the automatic tracking setting speed link B ' of Fig. 4 through B, passes through resistance R ₁₄To proportional integral (PI) amplifier IC ₅Negative terminal, Fig. 5 output shaft turns to judges that the signal C that feedback element is come connects with Fig. 4 C ', through R ₁₅Export proportional integral (PI) amplifier IC to ₅Negative terminal compare, equate back IC ₅Stop integration, export a unmodified voltage signal to current stabilization link (3), through R ₁₇To IC ₆Negative terminal, deliver to input D ', the E ' end of feedback element 7 by E, the D of Fig. 7 end, carry out differential amplification, export a positive voltage signal through R ₂₀To IC ₆Negative terminal compare IC after the balance ₆Stop integration, export a unmodified voltage signal, through R ₂₆To IC ₉Anode, ratio is amplified after K ₈Mouth F is to the F ' of Fig. 6 and the F of Fig. 8 " end; trigger process is identical during with propradation; during artificial blocked operation handle; change the current potential that P order equally, the phase shift trigger angle is changed, the phase shift trigger angle strengthens; exciting current rising; the weight descending speed slows down, when the phase shift trigger angle reduces, the quickening of weight descending speed.

During decline, the tachogenerator output voltage changes, and phase sequence is A, C, B, by comparator IC ₁₀, IC ₁₁, IC ₁₂Relatively, be input to d type flip flop IC ₁₃, IC ₁₄, IC ₁₄13 ends output high level, T ₂Be in conducting state, J ₂Action, normally closed contact KJ ₂' open KJ ₂" closure is exported by C.

If the very light or empty hook of load during decline, slip velocity is very slow, and the people is for making K ₆, K ₆' closure is connected anti-vehicle motor, gives downslide load or original thrust of empty hook, accelerates slip velocity, and eddy-current brake this moment does not have exciting current.

When eddy-current brake lost excitation, current feedback link (7) no-voltage was exported to L ' point of Fig. 8, makes comparator IC ₁₈Output low level makes IC ₂₀The output high level, it is exported one the tunnel and directly arrives NAND gate IC ₂₁1 end, the one tunnel makes diode D ₁₂End, pass through R ₁₅Give ground capacitance C ₉Charging, the signal that comes by Fig. 4 to F " through R ₆₃To IC ₁₉Anode, IC ₁₉Negative terminal introduce a positive voltage signal and compare IC ₁₉Anode be higher than negative terminal and just be output as, anode is lower than negative terminal and is output as negative.Work as IC ₁₉Be output as timing, make IC ₂₁3 ends open-minded, C ₉Charging potential reaches IC ₂₁During the upset level, IC ₂₁By just becoming negative, IC ₂₂Just becoming T by negative ₅Conducting, J ₅Action, KJ ₅Open the excision system power supply, behind the trouble removal, can reclose power supply.

If hypervelocity during decline, when the tachogenerator output signal reached certain value, rectification output caused Fig. 8 M ' point by Fig. 5 M point, through resistance R ₇₄, R ₇₇Introduce comparator IC ₂₃Anode, when anode is higher than negative terminal voltage, IC ₂₃Be output as high level, T ₆Conducting, J ₆Action, KJ ₆Open, the excision system power supply can reclose power supply behind the trouble removal.

DK is the three-phase disconnecting link, 1GLJ, 2GLJ overcurrent protection coil, if double-rotor machine is short-circuited or during over current fault, and 1GLJ, 2GLJ action, ZC opens, the excision system power supply.

Claims

1; a kind of speed-regulating control device of lifting mechanism; its lifting mechanism is mainly by spinner motor (DS); eddy-current brake (WZ); tachogenerator (CSF); anti-vehicle motor (DF); brake (TS) is formed; its speed-regulating control circuit is by the speed setting link (1) of given speed on demand; can follow the automatic tracking setting speed link (2) of setting speed automatically; can compensation give the temperature variant current stabilization link of eddy-current brake exciting current (3); the operation point that can realize preset voltage is put and is decided link (4); the phase shift that can control the silicon control trigger angle triggers link (5); can import the silicon controlled rectifier link (6) of exciting current to eddy-current brake; can make the current feedback link (7) of exciting current signal feedback to magnet excitation and field loss protection executive circuit; can react output shaft to turn to feedback element (8); can react the overspeed protection link (9) of the hypervelocity that descends; can react the field loss protection link (10) that loses exciting current forms; it is characterized in that eddy-current brake (WZ); anti-vehicle motor (DS); tachogenerator (CSF); brake (TS) is contained on the output shaft of double-rotor machine (DS); the speed setting link (1) of its speed-regulating control circuit; automatic tracking setting speed link (2); current stabilization link (3); the operation point is put and is decided link (4); phase shift triggers link (5); silicon controlled rectifier link (6) front and back successively connects; the output one tunnel of controlled rectification link (6) is to current feedback link (7); one the road to eddy-current brake (WZ); the output one tunnel of current feedback link (7) is to current stabilization link (3); one the road to field loss protection link (10); another voltage signal of field loss protection link (10) is put from the operation point and is decided link (4); the voltage of tachogenerator (CSF) is exported to turn to and is judged feedback element (8); turn to the judgement feedback element; (8) output one road is to overspeed protection link (9); one the road to speed setting link (1); one the road to automatic tracking setting speed link (2), speed protection link (9); the mouth of field loss protection link (10) connects with motor power.

2, lifting mechanism speed-regulating control device according to claim 1, the speed setting link (1) that it is characterized in that it is by rising source switch K ₁, decline source switch K ₂, the step-governor d K switch ₃～K ₅, divider resistance R ₁, R ₂, R ₆, the step-governor d resistance R ₃～R ₅(or R ₃'～R ₅', or infinite speed variation potential device R _W1) and IC ₁, R ₇, R ₈, R ₉The reverser of forming, IC ₂, R ₁₀, R ₁₁The comparator of forming, NAND gate IC ₃, not gate IC ₄, divider resistance R ₁₂, R ₁₃, field effect transistor T ₁, magnet excitation is carried out relay J ₁With its open contact KJ ₁Form Deng element, wherein, rising source switch K ₁Or decline source switch K ₂An end and dc supply link K during rising ₁Connect the negative pole of dc supply, K during decline ₂Connect the positive pole of dc supply, K ₂The other end through R ₁, R ₂, in parallel R ₃, R ₄, R ₅(R wherein ₃String K ₃, R ₄String K ₄, R ₅String K ₅, or series connected R ₃', R ₄', R ₅' R wherein ₃' and K ₃', R ₄' and K ₄', R ₅' and K ₅', or potential device R _W1) and R ₆Connecting to neutral, K ₁The other end directly and R ₂Connect, magnet excitation is carried out the open contact KJ of relay ₁Be connected across resistance R ₂Two ends, from R ₆The non-zero end be that the P point takes out voltage signal, the one tunnel through R ₇Be connected to amplifier IC ₁Negative input end, IC ₁Positive input terminal through R ₈Connecting to neutral, amplifier IC ₁Negative input end and mouth cross-over connection one feedback resistance R ₉, amplifier IC ₁Mouth B and B ' of automatic tracking setting speed link (2) link, another road is through resistance R ₁₀Meet comparator IC ₂Negative input end, comparator IC ₂Positive input terminal through R ₁₁Connecting to neutral, IC ₂Mouth connect NAND gate IC ₃An input end, IC ₃Another input end A ' judge IC in the feedback element with turning to ₁₄Output terminals A link IC ₃Output connect not gate IC ₄Input end, IC ₄Output through R ₁₂, R ₁₃Connecting to neutral is got R ₁₂, R ₁₃Between voltage division signal be connected to field effect transistor T ₁The canopy utmost point, field effect transistor T ₁The source electrode connecting to neutral, T ₁Drain electrode carry out relay coil J through magnet excitation ₁Connect the working power positive pole.

3, lifting mechanism speed-regulating control device according to claim 1, the operation point that it is characterized in that it is put and is decided link by amplifier IC ₈, resistance R ₂₁～R ₂₅, potential device R _W2The rising operation point of forming is put and is decided circuit, by amplifier IC ₉, resistance R ₂₆～R ₃₀, potential device R _W3The decline operation point of forming is put and is decided circuit, and wherein, the output one tunnel of current stabilization link (3) is through resistance R ₂₁Cause amplifier IC ₈Positive input terminal, resistance R ₂₄One termination amplifier IC ₈Negative terminal, another termination potential device R _W2The adjustable side, potential device R _W2The negative pole of two fixed ends, one termination working power, the other end is through resistance R ₂₅Connecting to neutral, resistance R ₂₃Be connected across amplifier IC ₈Negative input end and mouth, resistance R ₂₂One termination IC ₈Positive input terminal, other end connecting to neutral, amplifier IC ₈Output through K switch ₇Mouth F to this link; Another road is through resistance R ₂₆Be connected to amplifier IC ₉Positive input terminal, resistance R ₂₉One termination IC ₉Negative input end, another termination potential device R _W3The adjustable side, potential device R _W3The negative pole of two fixed ends, one termination working power, an end is through resistance R ₃₀Connecting to neutral, resistance R ₂₈Be connected across IC ₉Negative input end and mouth, resistance R ₂₇One termination IC ₉Positive input terminal, other end connecting to neutral, the output of amplifier IC 9 is connected to the mouth F of this link through K 8.Go into end, other end connecting to neutral, amplifier IC ₉Output through K ₈Be connected to the mouth F of this link.

4, lifting mechanism speed-regulating control device according to claim 1 is characterized in that turning to of it judge feedback element (8), is by comparator IC ₁₀～IC ₁₂, input resistance R ₃₄～R ₃₆, stabilivolt D ₁～D ₃, resistance R ₃₇～R ₄₁, differential capacitance C ₃, differential resistance R ₄₂, d type flip flop IC ₁₃, IC ₁₄, field effect transistor T ₂, turn to and judge the execution relay J ₂Formation turns to executive circuit, by rectifier diode D ₄～D ₉, divider resistance R ₄₃, R ₄₄, amplifier IC ₁₅, filter capacitor C ₄, C ₅, resistance R ₄₅, R ₄₆Constitute active low-pass filter circuit, by amplifier IC ₁₆, resistance R ₄₇～R ₄₉The reversers that constitute etc. are formed, wherein, and the three-phase voltage signal V that attracts by tachogenerator CSF _A', V _B', V _C', each road is respectively through input resistance R ₃₄, R ₃₅, R ₃₆Be connected to comparator IC ₁₀, IC ₁₁, IC ₁₂Negative input end, stabilivolt D ₁, D ₂, D ₃Be connected across comparator IC respectively ₁₀, IC ₁₁, IC ₁₂Positive and negative input end between, D ₁, D ₂, D ₃The negative pole connecting to neutral and connect comparator IC with the comparator positive input terminal ₁₀And IC ₁₁Output be connected to d type flip flop IC ₁₃3 ends and IC ₁₄11 ends, comparator IC ₁₂Output is through differential capacitance C ₃, differential resistance R ₄₂Connecting to neutral is from resistance R ₄₂Non-zero end and d type flip flop IC ₁₃4 ends connect comparator IC ₁₀～IC ₁₂Output again respectively through resistance R ₃₇～R ₃₉Connect the positive pole of working power, binary pair IC ₁₃1 end be mouth and binary pair IC ₁₄9 ends link IC ₁₄13 be that mouth is through resistance R ₄₀, R ₄₁The series connection connecting to neutral is from R ₄₁The non-zero end component voltage of drawing be connected to field effect transistor T ₂Grid, T ₂Drain electrode through turning to the coil J that judge to carry out relay ₂Connect T with working power is anodal ₂The source electrode connecting to neutral, from IC ₁₄The A ' that draws in a signal A and the speed setting link (1) of mouth 13 join IC ₁₃14 termination working powers, IC ₁₃6 ends and IC ₁₄7,8,10 terminations zero; Voltage signal V _A', V _B', V _C' another road is through D ₄～D ₉Three phase rectifier, and R ₄₃, R ₄₄After the dividing potential drop, be connected to by resistance R ₄₅, R ₄₆, capacitor C ₄, C ₅Amplifier IC ₁₅The active low-pass filter of forming, amplifier IC ₁₅Output one road connecting resistance R ₄₇～R ₄₉, amplifier IC ₁₆The reverser that constitutes is through relay J ₂Normally closed contact KJ ₂' connecting with the mouth C of this link, another road is through relay J ₂Normal opened contact KJ ₂" C connects with mouth.