CN107704004A - A kind of crane travel switch contact voltage circuit for regulating and controlling - Google Patents
A kind of crane travel switch contact voltage circuit for regulating and controlling Download PDFInfo
- Publication number
- CN107704004A CN107704004A CN201710791059.0A CN201710791059A CN107704004A CN 107704004 A CN107704004 A CN 107704004A CN 201710791059 A CN201710791059 A CN 201710791059A CN 107704004 A CN107704004 A CN 107704004A
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- Prior art keywords
- voltage
- travel switch
- circuit
- triode
- contact
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/50—Applications of limit circuits or of limit-switch arrangements
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Mechanical Engineering (AREA)
- Keying Circuit Devices (AREA)
Abstract
A kind of crane travel switch contact voltage circuit for regulating and controlling of the present invention, contact voltage Acquisition Circuit collection crane travel switch contact voltage signal divides in two-way difference input undervoltage regulation circuit and overvoltage regulating circuit, owe voltage regulator circuit and utilize triode Q1, Q2 composition multiple tube conductings, end nature examination crane travel switch contact voltage signal, it is under-voltage to be output to travel switch contact after owing the supercharging compensation of the voltage-multiplying circuit in voltage regulator circuit, overvoltage regulating circuit utilizes triode Q1, Q3 composition multiple tube conductings, end nature examination crane travel switch contact voltage signal, travel switch contact is output to again after the step-down transformer T1 decompressions in overvoltage regulating circuit when over-pressed.Present invention, avoiding because being added in voltage instability on travel switch contact, the problem of causing travel switch failure or damage, design uses less component, easy to maintenance and energy-conservation, has very big promotional value and practical value.
Description
Technical field
The present invention relates to field of circuit technology, more particularly to a kind of crane travel switch contact voltage circuit for regulating and controlling.
Background technology
At present, crane travel switch in operation, because crane belongs to high-power operation equipment, its line voltage distribution compared with
Height, and there are specified voltage, electric current, and crane travel switch caused by line voltage distribution shakiness in crane travel switch contact
The voltage that is subject to of contact it is also unstable, travel switch failure or damage can be made, cause crane movements components hit travel switch
When contact action can not but realize the switching of circuit, cause contact action signal during travel switch not to be transferred to timely and effectively
Electric control system, position or the stroke of crane movements part can not be limited in time, causes potential safety hazard.
So the present invention provides a kind of new scheme to solve this problem.
The content of the invention
For the above situation, to overcome the defect of prior art, the purpose of the present invention is to provide a kind of crane stroke
Switch contact voltage regulating and controlling circuit, have be skillfully constructed, the characteristic of human oriented design, efficiently solve crane travel switch
The voltage instability that is subject to of contact, travel switch failure or damage can be made, when causing crane movements components hit travel switch
Contact action can not but realize the problem of circuit switching.
Its technical scheme solved is, including contact voltage Acquisition Circuit, overvoltage undervoltage detection circuit and under-voltage regulation electricity
Road and overvoltage regulating circuit, contact voltage Acquisition Circuit collection crane travel switch contact voltage signal input over-and under-voltage
Detect in circuit, overvoltage undervoltage detection circuit utilizes the conducting of triode Q1-Q3 composition multiple tubes, cut-off nature examination crane row
Journey switch contact voltage signal, detection is under-voltage by owing voltage regulator circuit regulation output, and detection overvoltage is adjusted by overvoltage regulating circuit
Output；
The contact voltage Acquisition Circuit is divided in two-way input overvoltage undervoltage detection circuit, all the way after voltage-stabiliser tube D1 reversal connection voltage stabilizings
Flow into the undervoltage detection circuit of triode Q1 and triode Q3 compositions, another way flows into three poles after voltage-stabiliser tube D2 reversal connection voltage stabilizings
In the over-voltage detection circuit of pipe Q1 and triode Q2 compositions, end points connects surely altogether for triode Q1 base stage and triode Q3 emitter stage
Pressure pipe D1 anode and resistance R2 one end, triode Q1 colelctor electrode and resistance R2 other end ground connection, triode Q1 hair
End points, triode Q2 colelctor electrode connect voltage-stabiliser tube D2 anode to emitter-base bandgap grading and triode Q3, Q2 base stage altogether.
Preferably, voltage transformer P1 collection crane row of the contact voltage Acquisition Circuit from model PT202D
Journey switch contact voltage signal, power supply+110V provide power supply, and voltage transformer P1 output signal is successively through resistance R1, electric capacity
RC circuits and inductance L1 that C1 is composed in parallel are flowed into overvoltage undervoltage detection circuit, and wherein electric capacity C2 and inductance L1 simultaneously couple
Ground.
Due to the use of above technical scheme, the present invention has the following advantages that compared with prior art：
1, contact voltage Acquisition Circuit collection crane travel switch contact voltage signal, triode Q1, Q2 composition are multiple when under-voltage
Pipe conducting is closed, output voltage is to travel switch contact after the supercharging compensation of two voltage-multiplying circuits, and triode Q1, Q3 composition are compound when over-pressed
Pipe turns on, and is output to travel switch contact again after step-down transformer T1 decompressions, avoids because being added in voltage on travel switch contact
Shakiness, the problem of causing travel switch failure or damage, design uses less component, easy to maintenance and energy-conservation, has very
Big promotional value and practical value；
2, when voltage is less than crane travel switch contact voltage 200V, when that is to say between 50V-200V, triode Q1,
Q2 conductings are pressurized to 200V-300V outputs through voltage-multiplying circuit, while under-voltage indicator lamp LED1 lamps are bright, avoid and opened because being added in stroke
Brownout on contact is closed, travel switch failure, causes contact action during crane movements components hit travel switch but can not
The problem of realizing circuit switching；
3, when voltage is higher than crane travel switch contact voltage 300V, when that is to say between 300V-350V, triode
Q1, Q3 conducting are depressurized to 200V-300V outputs through step-down transformer T1, while over-pressed indicator lamp LED2 is bright, avoids because being added in
Overtension on travel switch contact, the problem of causing travel switch to damage.
Brief description of the drawings
Fig. 1 is a kind of circuit module figure of crane travel switch contact voltage circuit for regulating and controlling of the present invention.
Fig. 2 is a kind of circuit theory diagrams of crane travel switch contact voltage circuit for regulating and controlling of the present invention.
Embodiment
For the present invention foregoing and other technology contents, feature and effect, in following cooperation with reference to figures 1 through accompanying drawing 2
To in the detailed description of embodiment, can clearly present.The structure content being previously mentioned in following examples, it is with specification
Accompanying drawing is reference.
Each exemplary embodiment of the present invention is described below with reference to accompanying drawings.
Embodiment one, a kind of crane travel switch contact voltage circuit for regulating and controlling, including contact voltage Acquisition Circuit, overvoltage
Undervoltage detection circuit, voltage regulator circuit and overvoltage regulating circuit are owed, contact voltage Acquisition Circuit collection crane travel switch touches
In point voltage signal minute two-way difference input undervoltage regulation circuit and overvoltage regulating circuit, overvoltage undervoltage detection circuit utilizes three poles
The conducting of pipe Q1-Q3 composition multiple tubes, cut-off nature examination crane travel switch contact voltage signal, it is under-voltage through under-voltage regulation electricity
Travel switch contact is output to after voltage-multiplying circuit supercharging compensation in road, through the step-down transformer in overvoltage regulating circuit when over-pressed
Travel switch contact is output to again after T1 decompressions；The deficient voltage regulator circuit and overvoltage regulating circuit respectively by voltage-stabiliser tube D1,
D2 receives the signal of contact voltage Acquisition Circuit, with model ZLN15G09, rated voltage 250VAC, rated current 10A strokes
Exemplified by switch, when voltage is less than crane travel switch contact voltage 200V, triode Q1 base stage and triode Q2 composition
Multiple tube can turn on, for the conducting voltage of the multiple tube between 100V-200V, this conducting voltage scope can pass through regulation
Triode Q1, Q2 and resistance R2 numerical value are changed, and eliminate single triode ON value and there was only the problem of definite value, and
For the current potential of the signal of contact voltage Acquisition Circuit input between 50V-350V, its normal contact voltage scope is 200V-
Between 300V, overvoltage regulating circuit uses the multiple tube conducting voltage of triode Q1, Q3 composition to work as electricity between 300V-400V
Force down when crane travel switch contact voltage 200V, when that is to say between 50V-200V, under-voltage regulation circuit turn-on warp
Voltage-multiplying circuit is pressurized to 200V-300V outputs, when voltage is higher than crane travel switch contact voltage 300V, that is to say
When between 300V-350V, overvoltage regulating circuit is depressurized to 200V-300V through step-down transformer T1 and exported.
Embodiment two, on the basis of embodiment one, the contact voltage Acquisition Circuit selects model PT202D electricity
Transformer P1 collection crane travel switch contact voltage signals are pressed, it is current mode voltage transformer, when crane is run
Travel switch contact voltage signal, 0-5V voltage signal is converted to through signal conditioning circuit（This is prior art, herein no longer
It is described in detail）, power supply+10V provides power supply, the RC that voltage transformer P1 output signal composes in parallel through resistance R1, electric capacity C1 successively
Circuit filtering and inductance L1 filter off high frequency spurs and divide two-way to adjust circuit and overvoltage tune through voltage-stabiliser tube D1, D2 input undervoltage respectively
Economize on electricity in road, wherein electric capacity C2 and inductance L1 earths.
Embodiment three, on the basis of embodiment one, the deficient voltage regulator circuit is used for when voltage is less than crane stroke
During switch contact voltage 200V, when that is to say between 50V-200V, triode Q1, Q2 conducting are pressurized to through voltage-multiplying circuit
200V-300V is exported, and corresponding voltage signal of the contact voltage Acquisition Circuit output less than 2.5V is added to three poles through voltage-stabiliser tube D1
End points meets triode Q3 altogether for pipe Q1 base stage and triode Q2 emitter stage, triode Q1 emitter stage and triode Q2 base stage
Base stage, three now triode Q1, Q2 turn on, triode Q2 colelctor electrode output voltage and power supply+110V through electric capacity C3, C4,
Two voltage-multiplying circuits of C5 and diode D4, D5, D6 composition are pressurized to 200V-300V outputs, and heavy-duty machine stroke is picked up through diode D6
The contact H1 of switch one end, under-voltage indicator lamp LED1 lamps are bright.
Example IV, on the basis of embodiment one, the overvoltage regulating circuit is used for when voltage is higher than crane stroke
During switch contact voltage 300V, when that is to say between 300V-350V, overvoltage regulating circuit is depressurized to through step-down transformer T1
200V-300V is exported, and corresponding voltage signal of the contact voltage Acquisition Circuit output higher than 4V is connected to three poles through voltage-stabiliser tube D2
Pipe Q3 colelctor electrode, now when voltage is higher than crane travel switch contact voltage 300V, it that is to say between 300V-350V
When, triode Q3 emitter stage connecting resistances R3, electric capacity C6, transformer T1 contact 1, transformer T1 contact 3 and resistance R3 are another
End, electric capacity C6 other end ground connection, transformer T1 contact 2 export 200V-300V and have been connected to through diode D7, the tunnels of resistance R5 mono-
The contact H1 of heavy-duty machine travel switch one end, another way take over pressure indicator lamp LED2 positive pole, over-pressed indicator lamp through diode D7
LED2 negative pole connection ground, now over-pressed indicator lamp LED2 is bright, the contact H1 of crane travel switch another terminating resistor R6
One end, the resistance R6 other end is connected to electric control system.
When the present invention is specifically used, voltage transformer P1 collection crane travel switches contact in contact voltage Acquisition Circuit
Voltage signal, travel switch contact voltage signal when crane is run, the voltage that 0-5V is converted to through signal conditioning circuit are believed
Number（This is prior art, be will not be described in detail herein）, the RC circuit filterings and inductance L1 that are composed in parallel through resistance R1, electric capacity C1 are filtered
Go high frequency spurs composition export, when voltage is less than crane travel switch contact voltage 200V, that is to say 50V-200V it
Between when, voltage signal of the corresponding contact voltage Acquisition Circuit output less than 2.5V is added to triode Q1 base stage through voltage-stabiliser tube D1
With triode Q2 emitter stage, now triode Q1, Q2 conductings, triode Q2 colelctor electrode output voltage and power supply+110V are passed through
Electric capacity C3, C4, C5 and diode D4, D5, D6 composition two voltage-multiplying circuits be pressurized to 200V-300V, through under-voltage indicator lamp LED1,
Diode D7 is connected to the contact H1 of crane travel switch one end, and the contact H1 of the crane travel switch other end passes through electricity
Resistance R6 is connected to electric control system, realizes that circuit reliably switches；When voltage is higher than crane travel switch contact voltage
During 300V, when that is to say between 300V-350V, corresponding voltage signal of the contact voltage Acquisition Circuit output higher than 4V is through steady
Pressure pipe D2 is connected to triode Q3 colelctor electrode, and now triode Q1, Q3 is turned on, triode Q3 emitter stage connecting resistances R3, electric capacity
C6, transformer T1 contact 1, transformer T1 contact 3 and electric capacity C6 other end ground connection, are depressured through step-down transformer T1, become
Depressor T1 contact 2 exports one end that 200V-300V picks up the contact H1 of heavy-duty machine travel switch by diode D7 resistance R5.
Described above is to combine embodiment further description made for the present invention, it is impossible to assert the present invention
Specific implementation is limited only to this；For belonging to the present invention and for those skilled in the technology concerned, based on skill of the present invention
Under the premise of art scheme thinking, the expansion made and operating method, the replacement of data, should all fall the scope of the present invention it
It is interior.
Claims (4)
1. a kind of crane travel switch contact voltage circuit for regulating and controlling, including contact voltage Acquisition Circuit, over-and under-voltage detection electricity
Road and deficient voltage regulator circuit and overvoltage regulating circuit, it is characterised in that contact voltage Acquisition Circuit collection crane stroke is opened
Close in contact voltage signal input overvoltage undervoltage detection circuit, overvoltage undervoltage detection circuit is formed compound using triode Q1-Q3
Pipe conducting, cut-off nature examination crane travel switch contact voltage signal, it is defeated by owing voltage regulator circuit regulation that detection is under-voltage
Go out, detection overvoltage is adjusted by overvoltage regulating circuit to be exported；
The contact voltage Acquisition Circuit is divided in two-way input overvoltage undervoltage detection circuit, all the way after voltage-stabiliser tube D1 reversal connection voltage stabilizings
Flow into the undervoltage detection circuit of triode Q1 and triode Q3 compositions, another way flows into three poles after voltage-stabiliser tube D2 reversal connection voltage stabilizings
In the over-voltage detection circuit of pipe Q1 and triode Q2 compositions, end points connects surely altogether for triode Q1 base stage and triode Q3 emitter stage
Pressure pipe D1 anode and resistance R2 one end, triode Q1 colelctor electrode and resistance R2 other end ground connection, triode Q1 hair
End points, triode Q2 colelctor electrode connect voltage-stabiliser tube D2 anode to emitter-base bandgap grading and triode Q3, Q2 base stage altogether.
A kind of 2. crane travel switch contact voltage circuit for regulating and controlling as claimed in claim 1, it is characterised in that the contact electricity
Press Acquisition Circuit from model PT202D voltage transformer P1 collection crane travel switch contact voltage signal, power supply+
10V provides power supply, the RC circuits and inductance that voltage transformer P1 output signal composes in parallel through resistance R1, electric capacity C1 successively
L1 is flowed into overvoltage undervoltage detection circuit, wherein electric capacity C2 and inductance L1 earths.
A kind of 3. crane travel switch contact voltage circuit for regulating and controlling as claimed in claim 1, it is characterised in that the under-voltage tune
Economize on electricity road includes diode D3, and diode D3 anode connects triode Q3 colelctor electrode and electrochemical capacitor C5 negative pole, diode
D3 negative electrode connects electric capacity C3 one end and diode D4 anode and electrochemical capacitor C4 negative pole, electric capacity C3 another termination electricity
Source+110V, diode D4 negative electrode connect electrochemical capacitor C5 positive pole and diode D5, under-voltage indicator lamp LED1 positive pole, two poles
Pipe D5 negative pole connects electrochemical capacitor C4 positive pole, and under-voltage indicator lamp LED1 negative electrode connects diode D6 anode, diode D6's
Negative electrode picks up the contact H1 of heavy-duty machine travel switch one end.
4. a kind of crane travel switch contact voltage circuit for regulating and controlling as claimed in claim 1, it is characterised in that the overvoltage is adjusted
Economize on electricity road includes transformer T1, transformer T1 the connecting resistance R3 of contact 1, electric capacity C6 one end and triode Q2 emitter stage, becomes
The depressor T1 connecting resistance R3 of contact 3 and the electric capacity C6 other end, transformer T1 contact 2 connect diode D7 positive pole, transformer
The T1 connecting resistance R4 of contact 4 one end, resistance R4 other end ground connection, diode D7 negative electrode connecting resistance R5 one end, overvoltage
Indicator lamp LED2 positive pole, the resistance R5 other end pick up the contact H1 of heavy-duty machine travel switch one end, over-pressed indicator lamp LED2
Negative pole ground connection, the contact H1 of crane travel switch another terminating resistor R6 one end, the resistance R6 other end connects in succession
To electric control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791059.0A CN107704004B (en) | 2017-09-05 | 2017-09-05 | A kind of crane travel switch contact voltage circuit for regulating and controlling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791059.0A CN107704004B (en) | 2017-09-05 | 2017-09-05 | A kind of crane travel switch contact voltage circuit for regulating and controlling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107704004A true CN107704004A (en) | 2018-02-16 |
| CN107704004B CN107704004B (en) | 2018-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710791059.0A Active CN107704004B (en) | 2017-09-05 | 2017-09-05 | A kind of crane travel switch contact voltage circuit for regulating and controlling |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2182800Y (en) * | 1994-01-21 | 1994-11-16 | 机械工业部北京起重运输机械研究所 | Multi-function safety guard device for crane |
| US5546260A (en) * | 1993-01-08 | 1996-08-13 | National Semiconductor Corporation | Protection circuit used for deactivating a transistor during a short-circuit having an inductive component |
| JP2014086066A (en) * | 2012-10-22 | 2014-05-12 | Pixela Corp | Power supply protection circuit |
| CN204391018U (en) * | 2015-02-10 | 2015-06-10 | 北京北元电器有限公司 | A kind of overvoltage/undervoltage device being applicable to the instruction of miniature circuit breaker accessory tapes voltage |
| CN204794034U (en) * | 2015-08-18 | 2015-11-18 | 深圳市正远科技有限公司 | Input undervoltage protection circuit |
-
2017
- 2017-09-05 CN CN201710791059.0A patent/CN107704004B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5546260A (en) * | 1993-01-08 | 1996-08-13 | National Semiconductor Corporation | Protection circuit used for deactivating a transistor during a short-circuit having an inductive component |
| CN2182800Y (en) * | 1994-01-21 | 1994-11-16 | 机械工业部北京起重运输机械研究所 | Multi-function safety guard device for crane |
| JP2014086066A (en) * | 2012-10-22 | 2014-05-12 | Pixela Corp | Power supply protection circuit |
| CN204391018U (en) * | 2015-02-10 | 2015-06-10 | 北京北元电器有限公司 | A kind of overvoltage/undervoltage device being applicable to the instruction of miniature circuit breaker accessory tapes voltage |
| CN204794034U (en) * | 2015-08-18 | 2015-11-18 | 深圳市正远科技有限公司 | Input undervoltage protection circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107704004B (en) | 2018-11-23 |
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