CN108569625A - A kind of safety protection circuit device of erecting equipment brake - Google Patents
A kind of safety protection circuit device of erecting equipment brake Download PDFInfo
- Publication number
- CN108569625A CN108569625A CN201810385333.9A CN201810385333A CN108569625A CN 108569625 A CN108569625 A CN 108569625A CN 201810385333 A CN201810385333 A CN 201810385333A CN 108569625 A CN108569625 A CN 108569625A
- Authority
- CN
- China
- Prior art keywords
- brake
- contactor
- frequency converter
- motor
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- B66C13/22—Control systems or devices for electric drives
- B66C13/30—Circuits for braking, traversing, or slewing motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
Abstract
The present invention provides a kind of safety protection circuit device of erecting equipment brake, when there is contact adhesion in the main contacts of first contactor, then the main contacts disconnecting circuit of second contactor；Or, when there is contact adhesion in the main contacts of second contactor, then the main contacts disconnecting circuit of first contactor；It realizes and applies two brake electric machines on hardware, play the role of the dual fail-safe of hardware.The main contactor series circuit that the contactor and major loop control frequency converter of two brakes of control are applied on software, plays the role of the dual fail-safe of software control.When a Stopper contact device contact adhesion or mechanical part card resistance, and the effect of circuit loop is cut off from another probe of contactor.The failure rate for reducing brake, has saved maintenance cost.
Description
Technical field
The present invention relates to erecting equipment safety control technologies, and in particular to a kind of safeguard protection electricity of erecting equipment brake
Road device.
Background technology
In current erecting equipment, in the raising of erecting equipment, opening and closing, jib lubbing mechanism, each mechanism is usually a master
Motor matches a wind turbine and a brake.With the extension of erecting equipment usage time and the aging of contactor elements, control
Phenomena such as contactor of erecting equipment braking will appear a main contacts adhesion twice, mechanical part card resistance, makes the master of contactor touch
Head cannot be flicked timely, lead to brake failure, there are fail- safe hidden danger.
Invention content
The present invention provides a kind of safety protection circuit device of erecting equipment brake, to improve safety.
The first aspect of the present invention provides a kind of safety protection circuit device of erecting equipment brake, including：Brake mould
Block and control module；
Wherein, the brake module, including：First contactor, second contactor, the first brake, second brake, change
Frequency device and motor；
The frequency converter is electrically connected with the motor；The first contactor connects with the frequency converter and described second respectively
Tentaculum is electrically connected；The second contactor is electrically connected with first brake and the second brake respectively；Described first
Brake and the second brake are electrically connected with the motor respectively；
When contact adhesion occurs in the main contacts of the first contactor, then the main contacts of the second contactor disconnects electricity
Road；Or, when contact adhesion occurs in the main contacts of the second contactor, then the main contacts of the first contactor disconnects electricity
Road；
When the state in the disconnecting circuit, then first brake and/or the second brake are to described
The main shaft of motor carries out band-type brake；
The control module be electrically connected respectively with the first contactor, the second contactor and the frequency converter；
The control module, for controlling the first contactor, the second contactor and the frequency converter.
Optionally, the control module includes：First intermediate relay, the second intermediate relay, rising limit protection are opened
Close the bypass multiplexor with limit position；
Wherein, the rising limit protection switch is in parallel with the bypass multiplexor of limit position；The rising limit
Protection switch and the bypass multiplexor of the limit position are connected with first intermediate relay；First intermediate relay
It connects with the first contactor；
First intermediate relay is electrically connected with the frequency converter, to obtain the frequency converter failure signal；
Second intermediate relay is electrically connected with the frequency converter, to obtain the frequency converter run signal.
Optionally, the brake module further includes：Input reactance device and fuse；
The input reactance device and the fuse are connected with the first contactor；The fuse and the frequency conversion
Device is connected.
Optionally, when the state in the disconnecting circuit, if first brake and the second brake shape
State is normal, then first brake and the second brake carry out band-type brake to the main shaft of the motor；Or,
If first brake status is normal, first brake carries out band-type brake to the main shaft of the motor；Or,
If the second brake state is normal, the second brake carries out band-type brake to the main shaft of the motor.
Optionally, brake module further includes：Main circuit breaker, the first breaker and the second breaker；
Wherein, the main circuit breaker is connected with the first contactor, the contactor for controlling the motor；It is described
First breaker is connected with the second contactor and first brake, the circuit for controlling first brake
Switch；Second breaker is connected with the second contactor and the second brake, for controlling second system
The contactor of dynamic device.
The safety protection circuit device of erecting equipment brake provided in an embodiment of the present invention, when the master of first contactor touches
Point is when there is contact adhesion, then the main contacts disconnecting circuit of second contactor；Or, there is contact in the main contacts when second contactor
When adhesion, then the main contacts disconnecting circuit of first contactor；And then when the state in disconnecting circuit, then the first brake
And/or second brake carries out band-type brake to the main shaft of motor；Control module with respectively with first contactor, second contactor and change
Frequency device is electrically connected；Control module controls first contactor, second contactor and frequency converter, realizes and applies two on hardware
A brake electric machine, plays the role of the dual fail-safe of hardware.The contactor and master of two brakes of control are applied on software
Circuit controls the main contactor series circuit of frequency converter, plays the role of the dual fail-safe of software control.When a Stopper contact
The adhesion of device contact or mechanical part card resistance, and the effect of circuit loop is cut off from another probe of contactor.Reduce braking
The failure rate of device, has saved maintenance cost.
Description of the drawings
Fig. 1 is a kind of structural representation of the safety protection circuit device of erecting equipment brake provided in an embodiment of the present invention
Figure；
Fig. 2 is a kind of circuit signal of safety protection circuit device of erecting equipment brake provided in an embodiment of the present invention
Figure.
Specific implementation mode
Fig. 1 is a kind of structural representation of the safety protection circuit device of erecting equipment brake provided in an embodiment of the present invention
Figure, referring to Fig. 1, which includes：Brake module 1 and control module 2；
Wherein, brake module 1, including：First contactor KM1, second contactor KM2, the first brake YB1, the second system
Dynamic device YB2, frequency converter INV1 and motor M1；
Frequency converter INV1 is electrically connected with motor M1；First contactor KM1 respectively with frequency converter INV1 and second contactor KM2
Electrical connection；Second contactor KM2 is electrically connected with the first brake YB1 and second brake YB2 respectively；First brake YB1 and
Second brake YB2 is electrically connected with motor M1 respectively；
When contact adhesion occurs in the main contacts of first contactor KM1, then the main contacts of second contactor KM2 disconnects electricity
Road；Or, when there is contact adhesion in the main contacts of second contactor KM2, then the main contacts disconnecting circuit of first contactor KM1；
When the state in disconnecting circuit, then masters of the first brake YB1 and/or second brake YB2 to motor M1
Axis carries out band-type brake；
Control module 2 be electrically connected respectively with first contactor KM1, second contactor KM2 and frequency converter INV1；
Control module 2, for controlling first contactor KM1, second contactor KM2 and frequency converter INV1.
The safety protection circuit device of erecting equipment brake provided in an embodiment of the present invention, when the master of first contactor touches
Point is when there is contact adhesion, then the main contacts disconnecting circuit of second contactor；Or, there is contact in the main contacts when second contactor
When adhesion, then the main contacts disconnecting circuit of first contactor；And then when the state in disconnecting circuit, then the first brake
And/or second brake carries out band-type brake to the main shaft of motor；Control module with respectively with first contactor, second contactor and change
Frequency device is electrically connected；Control module controls first contactor, second contactor and frequency converter., realize and applied on hardware
Two brake electric machines, play the role of the dual fail-safe of hardware.Applied on software control two brakes contactor with
Major loop controls the main contactor series circuit of frequency converter, plays the role of the dual fail-safe of software control.When a brake connects
The adhesion of tentaculum contact or mechanical part card resistance, and the effect of circuit loop is cut off from another probe of contactor.Reduce system
The failure rate of dynamic device, has saved maintenance cost.
Further, brake module 1 and a kind of possible realization method of control module 2 is given below.Specifically, Fig. 2 is
The circuit diagram of the safety protection circuit device of a kind of erecting equipment brake provided in an embodiment of the present invention, referring to Fig. 2, control
Molding block, including：First intermediate relay K1, the second intermediate relay K2, the side for rising limit protection switch LS1 and limit position
Road change-over switch SA1；
Wherein, it is in parallel with the bypass multiplexor SA1 of limit position to rise limit protection switch LS1；Rise limit protection to open
The bypass multiplexor SA1 for closing LS1 and limit position connects with the first intermediate relay K1；First intermediate relay K1 connects with first
Tentaculum KM1 series connection；Specifically, SA1 is for debugging and repairing.Rise limit protection switch LS1 for controlling first contactor KM1
Closing.
First intermediate relay K1 is electrically connected with frequency converter INV1, to obtain frequency converter INV1 fault-signals；
Second intermediate relay K2 is electrically connected with frequency converter INV1, to obtain frequency converter INV1 run signal.
Specifically, when PLC output signals allow, frequency converter INV1 does not have failure, circuit self-locking, the first intermediate relay K1
Coil is connected；PLC output signals allow, and frequency converter INV1 run signal connects the coil of the first intermediate relay K2.
Further, for " the control module 2, for first contactor KM1, second contactor KM2 involved in above
And frequency converter INV1 is controlled " scheme, a kind of possible realization method is given below：
First, which utilizes programmable controller (Programmable Logic
Controller, referred to as：PLC the second intermediate relay K2 power-off controls) are carried out to the first intermediate relay K1, into
And it realizes and control is realized to first contactor KM1, second contactor KM2 and frequency converter INV1.Specifically, first contactor
Auxiliary contact are connect with the second intermediate relay K2.
With continued reference to Fig. 2, brake module further includes：Input reactance device L1 and fuse F1；
Input reactance device L1 and fuse F1 connect with first contactor KM1；Fuse F1 connects with frequency converter INV1.
Further, when the state in disconnecting circuit, if the first brake YB1 and second brake YB2 states are just
Often, then the first brake YB1 and second brake YB2 carries out band-type brake to the main shaft of motor M1；Or,
If the first brake YB1 states are normal, the first brake YB1 carries out band-type brake to the main shaft of motor M1；Or,
If second brake YB2 states are normal, second brake YB2 carries out band-type brake to the main shaft of motor M1.
Wherein, for the first brake YB1 and second brake YB2 states, by going PLC signals to carry out adopting for signal
Collection, the data after acquisition draw a conclusion, and are specifically not in when PLC is not carried out the order of K1 actuations, and PLC is fed back to
The connection of the contacts KM1 illustrates, illustrates that the first brake YB1 is normal, second brake YB2 is also as a same reason.
Specifically, two elements of input reactance device L1 and fuse F1 need not control, power grid, input reactance are accessed
Rush of current caused by the restricted grid voltage mutations of device L1 and switching overvoltage is effectively protected frequency converter and can improve change
The power factor of frequency device inhibits the harmonic current effect of frequency converter input power grid；When fuse F1 act as electric current and breaks down
Rapid disengagement failure electric current, prevents fault spread, to ensure frequency converter safe operation.
Specifically, the embodiment of the present invention can realize the dual fail-safe on hardware, as shown in Fig. 2, there are two brake YB1,
YB2 controls a mechanism simultaneously, and the bis- devices processed of YB1, YB2 are to the main shaft of motor M1 while band-type brake, when a brake is out of order,
Another brake can be prevented with band-type brake motor M1 main shafts erecting equipment requirement stop lifting article continue to glide, under slip it is existing
As.It can be recorded by PLC in the alarm logging of equipment when one of brake goes wrong, warning reminding maintenance personal
Need to change brake.Specifically, by the PLC of rear end, be recorded on the touch screen of monitoring device and alarm, PLC and touch screen it
Between be by communicate realize.
With continued reference to Fig. 2, brake module further includes：Main circuit breaker QM1, the first circuit breaker Q M2 and the second circuit breaker Q M3；
Wherein, main circuit breaker QM1 connects with first contactor KM1, the contactor for controlling motor M1；First open circuit
Device QM2 connects with second contactor KM2 and the first brake YB1, and the circuit for controlling the first brake YB1 is opened
It closes；Second circuit breaker Q M3 connects with second contactor KM2 and second brake YB2, for controlling second brake YB2's
Contactor.
Specifically, the main circuit breaker of QM1 erecting equipment mechanisms in order to control, QM2 in order to control YB1 band heat after function open circuit
Device, QM3 in order to control YB2 band heat after function breaker.
It should be noted that in Fig. 2 CV11-L1 and CV11-L2 power supplys in order to control wire size mark, herein only as implementing
Example illustrates, in specific implementation, however it is not limited to the type of attachment.
The software controlled circuitry of the embodiment of the present invention is can coordinate realization two-way safeguarding function, such as Fig. 2, first contactor KM1
The 2 of main contacts, 4,6 are connected to the 1 of second contactor KM2 main contacts, and 3,5 this concatenated main control loops play control
The dual fail-safe of circuit acts on.When there is phenomena such as main contacts adhesion, mechanical part card resistance in the main contacts of first contactor KM1,
The main contacts of two contactor KM2 can be with disconnecting circuit, otherwise main contacts adhesion, machine occurs in the main contacts for working as second contactor KM2
The main contacts of phenomena such as tool part card resistance, first contactor KM1 can be with disconnecting circuits, to play the role of dual fail-safe.Circuit
It disconnects, brake is at the state of closing, can effectively prevent when there are brake troubles, the object of erecting equipment lifting
Product continue glide, under slip phenomenon.When there is phenomena such as main contacts adhesion, mechanical part card resistance, equipment is recorded by PLC in failure
In alarm logging, KM1, KM2 that warning reminding maintenance personal more renews.
The setting of brake hardware and software dual fail-safe simultaneously, greatly reduces the safety failure rate of brake, saves
Maintenance cost, improves the economic interests of enterprise.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (5)
1. a kind of safety protection circuit device of erecting equipment brake, which is characterized in that including：Brake module and control mould
Block；
Wherein, the brake module, including：First contactor, second contactor, the first brake, second brake, frequency converter
And motor；
The frequency converter is electrically connected with the motor；The first contactor respectively with the frequency converter and the second contactor
Electrical connection；The second contactor is electrically connected with first brake and the second brake respectively；First braking
Device and the second brake are electrically connected with the motor respectively；
When there is contact adhesion in the main contacts of the first contactor, then the main contacts disconnecting circuit of the second contactor；
Or, when there is contact adhesion in the main contacts of the second contactor, then the main contacts disconnecting circuit of the first contactor；
When the state in the disconnecting circuit, then first brake and/or the second brake are to the motor
Main shaft carry out band-type brake；
The control module be electrically connected respectively with the first contactor, the second contactor and the frequency converter；
The control module, for controlling the first contactor, the second contactor and the frequency converter.
2. the safety protection circuit device of erecting equipment brake according to claim 1, which is characterized in that the control
Module includes：First intermediate relay, the second intermediate relay, rising limit protection switch and the bypass conversion of limit position are opened
It closes；
Wherein, the rising limit protection switch is in parallel with the bypass multiplexor of limit position；The rising limit protection
Switch and the bypass multiplexor of the limit position are connected with first intermediate relay；First intermediate relay and institute
State first contactor series connection；
First intermediate relay is electrically connected with the frequency converter, to obtain the frequency converter failure signal；
Second intermediate relay is electrically connected with the frequency converter, to obtain the frequency converter run signal.
3. the safety protection circuit device of erecting equipment brake according to claim 1, which is characterized in that the braking
Module further includes：Input reactance device and fuse；
The input reactance device and the fuse are connected with the first contactor；The fuse and the frequency converter string
Connection.
4. the safety protection circuit device of erecting equipment brake according to claim 1, which is characterized in that when in institute
When stating the state of disconnecting circuit, if first brake and the second brake state are normal, first brake
Band-type brake is carried out to the main shaft of the motor with the second brake；Or,
If first brake status is normal, first brake carries out band-type brake to the main shaft of the motor；Or,
If the second brake state is normal, the second brake carries out band-type brake to the main shaft of the motor.
5. the safety protection circuit device of erecting equipment brake according to claim 1, which is characterized in that brake module
Further include：Main circuit breaker, the first breaker and the second breaker；
Wherein, the main circuit breaker is connected with the first contactor, the contactor for controlling the motor；Described first
Breaker is connected with the second contactor and first brake, and the circuit for controlling first brake is opened
It closes；Second breaker is connected with the second contactor and the second brake, for controlling second braking
The contactor of device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810385333.9A CN108569625A (en) | 2018-04-26 | 2018-04-26 | A kind of safety protection circuit device of erecting equipment brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810385333.9A CN108569625A (en) | 2018-04-26 | 2018-04-26 | A kind of safety protection circuit device of erecting equipment brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108569625A true CN108569625A (en) | 2018-09-25 |
Family
ID=63575366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810385333.9A Pending CN108569625A (en) | 2018-04-26 | 2018-04-26 | A kind of safety protection circuit device of erecting equipment brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108569625A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112645218A (en) * | 2020-12-16 | 2021-04-13 | 南京港机重工制造有限公司 | Electrical control loop of crane brake and control method thereof |
| CN114735612A (en) * | 2022-03-25 | 2022-07-12 | 上海新时达电气股份有限公司 | Brake power supply circuit, control method thereof and elevator |
-
2018
- 2018-04-26 CN CN201810385333.9A patent/CN108569625A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112645218A (en) * | 2020-12-16 | 2021-04-13 | 南京港机重工制造有限公司 | Electrical control loop of crane brake and control method thereof |
| CN112645218B (en) * | 2020-12-16 | 2024-02-06 | 南京港机重工制造有限公司 | Crane brake electrical control loop and control method thereof |
| CN114735612A (en) * | 2022-03-25 | 2022-07-12 | 上海新时达电气股份有限公司 | Brake power supply circuit, control method thereof and elevator |
| CN114735612B (en) * | 2022-03-25 | 2024-02-27 | 上海新时达电气股份有限公司 | Brake power supply circuit, control method thereof and elevator |
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