CN207868977U - A kind of permanent magnet soft starter - Google Patents
A kind of permanent magnet soft starter Download PDFInfo
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- CN207868977U CN207868977U CN201820201567.9U CN201820201567U CN207868977U CN 207868977 U CN207868977 U CN 207868977U CN 201820201567 U CN201820201567 U CN 201820201567U CN 207868977 U CN207868977 U CN 207868977U
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- permanent magnet
- soft starter
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- permanent
- magnetic steel
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Abstract
The utility model is related to a kind of permanent magnet soft starters.Specifically, it on power rotor by being arranged two groups of permanent magnetic steels, with metallic conductor on driven rotor and permanent magnetic steel radial magnetic coupling and axial magnetic coupling occur for two groups of magnet steel respectively, and the rotating speed of power rotor and driven rotor is measured in real time by control mechanism, feed back to executing agency, accurately control the variation of the Radial Coupling area of metallic conductor and permanent magnetic steel, size and the soft start required time to control transmitted torque, after the completion of waiting for soft start, synchronous operation is switched to, soft stop function is provided simultaneously with.The permanent magnet transmission of the utility model has both the advantages of asynchronous soft start, synchronous operation and soft stop, coupling process can be accurately controlled in startup stage by control mechanism and executing agency, vibration isolation and damping effect is good, suitable for the heavy load startings such as large-scale belt conveyor, ball mill and synchronous operation the stage, transmission efficiency, power rotor and driven rotor without slippage, without vortex Wen Sheng.In addition, the permanent magnet soft starter is simple in structure, centering flexibility is higher, simple installation.
Description
Technical field
The utility model is related to mechanical transmission fields, more specifically, it is related to a kind of permanent magnet soft starter.
Background technology
Soft starting mode is broadly divided into electrical soft start and mechanical soft start two major classes.Wherein electrical soft-start time need to be with
Basic machine matches, therefore the startup time is often restricted, and ideal startup effect is not achieved.Currently, mechanical soft start side
Formula mainly has：Coupling fluid-structure transmission, permanent-magnet eddy current transmission and U.S.'s CST soft starts.Coupling fluid-structure transmission starts time and hydraulic pressure
Oil level is not in a linear relationship, be not easy to accurately control, transmission efficiency is low, installation centering is stringent, vibration is big；Permanent-magnet eddy current transmission belongs to
Asynchronous transmission transmits torque and rotating speed using non-contact magnetic force, and vibration isolation and damping effect is good, it can be achieved that certain soft start function,
But the startup time is short, as large-scale heavy duty soft start equipment, starts scarce capacity, and in course of normal operation, there is Wen Sheng, is driven
Efficiency is slightly lower；S-shaped start up curve may be implemented in CST soft start equipment in the U.S., and control accuracy is high, can also meet heavy load starting
Demand, but its equipment cost is expensive, maintenance cost is high, structure is more complex, it is difficult to it promotes.
Temperature liter is generated in order to solve the problem of to have in permanent-magnet eddy current drive apparatus course of normal operation slippage, 2015
A kind of magnetic has been recorded in the Chinese patent CN105186830 that December 23 announced to magnetic-synchro coupler, has been wrapped in technical solution
Permanent magnetic disk and permanent-magnet synchronous component are included, the permanent magnetic disk is connected with load wheel hub, the permanent-magnet synchronous component and motor wheel hub
It is connected, timing disk is equipped in permanent-magnet synchronous component, there are air gap and by magnetic-coupled between permanent magnetic disk and timing disk
Mode is coupled, without slippage between permanent magnetic disk and permanent-magnet synchronous component, without Wen Sheng in the course of work.But its structure is complex,
And in the startup of the heavy loads equipment such as the large-scale belt conveyor of application, ball mill, be easy to skid and startup is caused to fail, or
Person, due between desk permanent-magnet body air gap degree of regulation be difficult to control and cause motor overload or equipment damage.
It skids when in order to avoid starting, the Wen Shengwen in equipment damage or motor overload problem and course of normal operation
It inscribes, a kind of permanent magnetism of asynchronous starting synchronous operation has been recorded in Chinese patent CN204928518U disclosed in 30 days December in 2015
Couple soft strater, the permanent magnet coupling soft strater include coaxial arrangement input shaft, output shaft, further include wound rotor,
Output end p-m rotor and input terminal p-m rotor positioned there between, the input terminal p-m rotor, which is mounted on, drives it
On the input shaft of rotation, wound rotor is mounted on by bearing on input shaft, and output end p-m rotor is fixed with the output shaft
Connection, and pass through bearing and the input axis connection；The wound rotor by coil, iron core and secured core rotor field spider structure
At input terminal p-m rotor, output end p-m rotor are made of the rotor field spider of permanent magnet and installation permanent magnet, wound rotor
The rotor field spider of rotor field spider and output end p-m rotor is rigidly connected.The technical solution combines asynchronous starting and synchronous operation
The advantages of, it can achieve the effect that preferable soft start, but it owes flexibility on starting the control and the control of time of speed
Good, the raising of transmission efficiency has larger dependence for size, the winding data of permanent magnet, and volume is big, weight weight, because
This equipment has much room for improvement.
Utility model content
For the above prior art, the technical problem to be solved by the present invention is to provide a kind of permanent magnet soft starters, should
Permanent magnet soft starter has both the advantages of asynchronous starting and synchronous operation, more specifically, it is when may be implemented to start startup stage
Between accurately controlled with speed, be suitable for the soft start and soft stop of the large rotating inertias equipment such as large-scale belt conveyor, ball mill
Vehicle, and transmission efficiency, without slippage, no vortex Wen Sheng, simple in structure, easy for installation, vibration isolation and damping effect in course of normal operation
Fruit is good.
In order to solve the above-mentioned technical problem, the utility model provides：
A kind of 1. permanent magnet soft starter of scheme, the permanent magnet soft starter include power rotor, driven rotor, executing agency
And control mechanism, the power rotor is equipped with the first permanent magnetic steel and the second permanent magnetic steel, wherein first permanent magnetic steel is
Cartridge type, second permanent magnetic steel are disc type, and the driven rotor is equipped with metallic conductor and third permanent magnetic steel, the metal
Conductor is cartridge type, and the third permanent magnetic steel is disc type；First permanent magnetic steel participates in radial magnetic coupling with the metallic conductor
It closes, second permanent magnetic steel participates in axial magnetic coupling with the third permanent magnetic steel；The driven rotor and the execution machine
Structure couples, and the executing agency couples with the controller.
2. permanent magnet soft starter as described in scheme 1 of scheme, the executing agency can control first permanent magnetic steel with
The progressive coupling of the metallic conductor or separation；The executing agency can control second permanent magnetic steel and the third permanent-magnet magnetic
Steel couples or separation.
3. permanent magnet soft starter as described in scheme 1 of scheme, the power rotor further includes flange shaft sleeve and p-m rotor
Carrier.
Permanent magnet soft starter of the scheme 4. as described in scheme 3, the flange shaft sleeve is fixed with the p-m rotor carrier to be joined
It connects.
5. permanent magnet soft starter as described in scheme 1 of scheme, the driven rotor further include hub splines, driven rotor load
Body, combination bearing, bearing (ball) cover, axle end baffle plate.
6. permanent magnet soft starter as described in scheme 5 of scheme, passes through flower between the driven rotor carrier and hub splines
Key connecting.
7. permanent magnet soft starter as described in scheme 5 of scheme, the axle end baffle plate outer diameter are more than hub splines outer diameter, and two
It is to be fixedly connected between person.
8. permanent magnet soft starter as described in scheme 5 of scheme, the combination bearing are located on the outside of driven rotor carrier, and with
Bearing (ball) cover is fixedly connected.
9. permanent magnet soft starter as described in scheme 1 of scheme, the permanent magnet soft starter further include case supports part and axis
It holds, case supports part both ends pass through the splined shaft associating of the flange shaft sleeve and driven rotor of bearing and power rotor respectively
It connects.
10. permanent magnet soft starter as described in scheme 5 of scheme, metallic conductor and driven rotor carrier in the driven rotor
Between rigid attachment.
Permanent magnet soft starter of the scheme 11. as described in any one of scheme 5 or 8, the combination bearing include dual thrust axis
It holds and cylinder roller bearing.
12. permanent magnet soft starter as described in scheme 1 of scheme, the executing agency is by servomotor, gear reducer structure, lead screw
Auxiliary structure and shift fork connection composition.
13. permanent magnet soft starter as described in scheme 1 of scheme, the control mechanism includes rotation-speed measuring device and control
Device.
Permanent magnet soft starter of the scheme 14. as described in scheme 12, the shift fork join with the combination bearing on the outside of driven rotor
It connects.
Permanent magnet soft starter of the scheme 15. as described in scheme 13, the rotation-speed measuring device include input terminal revolution speed sensing
Device, output end speed probe and signal transmission and conversion equipment.
Permanent magnet soft starter of the scheme 16. as described in scheme 13, the controller include that signal processing unit and signal are defeated
Go out unit.
In above technical scheme, by the way that two groups of permanent magnet coupling mechanism, i.e. radial permanent magnet magnet steel and metallic conductor are arranged
Asynchronous coupling, on axial power rotor the second permanent magnetic steel and on driven rotor third permanent magnetic steel synchronous coupling, realize
The effect of the soft start of asynchronous soft start synchronous operation.
Compared with prior art, the technical program has advantageous effect following prominent：
Although 1) the technical program combines the structure of asynchronous starting and synchronous operation, structure is relatively easy, installs
Simplicity, centering flexibility are higher.
2) in the asynchronous starting stage, pass through actuating mechanism controls power rotor permanent magnetic steel and driven rotor metallic conductor
Couple speed, make its progressive coupling, to accurately control the time for reaching certain load speed, by power rotor and from
The rotation-speed measuring device being arranged at turn, can feed back to executing agency by rotary speed information in time, reach coupling speed, torque
Adjustment in time, to realize accurately controlling for equipment soft-start time.
3) by detecting power rotor and driven rotor both sides rotating speed, when the two rotating speed difference reaches a certain setting value,
Controller sends a signal to executing agency so that axially coupling magnet steel participates in rapidly synchronous magnetic coupling to driven rotor with power rotor
It closes, reaches the synchronous operation stage in very short time, this stage transmission efficiency is high, is exported without slippage, without Wen Sheng, permanent torque, can prolong
Long service life of equipment.
4) fast first by actuating mechanism controls driven rotor magnetic coupling synchronous with the axial direction of power rotor in shutdown phase
Speed is detached from coupling, and power rotor permanent magnetic steel is coupled with driven rotor metallic conductor there are asynchronous at this time, further passes through execution
Mechanism controls participate in the area of radial asynchronous coupling, it is made to be progressively smaller until that power rotor is kept completely separate with driven rotor, this
When motor stopping, realize soft stop, while getting ready for next soft start.
5) due to load end rotating speed be it is gradual increase or decrease, motor overload or the impact to equipment will not be caused
Damage, is conducive to the soft start and soft stop of the large rotating inertias equipment such as large-scale belt conveyor, ball mill.
6) simultaneously, for the soft strater compared in the prior art, vibration isolation and damping is with obvious effects, and elastic buffer is good, shock resistance
Ability is strong, easy for installation, good reliability, without Wen Sheng, transmission efficiency in course of normal operation.
Description of the drawings
Fig. 1 is the structural schematic diagram of the permanent magnet soft starter described in the utility model embodiment 1；
Fig. 2 is the combination bearing schematic diagram of the permanent magnet soft starter described in the utility model embodiment 1；
Fig. 3 is the structural schematic diagram of the permanent magnet soft starter described in the utility model embodiment 2.
Reference numeral
1- flange shaft sleeves, 2- power rotor carriers, 3- copper conductors, 4,5- power rotor magnet steel, 6- driven rotor magnet steel, 7-
Driven rotor carrier, 8- combination bearings, 9- bearing (ball) covers, 10- hub splines, 11,17- speed probes, 12- controllers,
13- servo motors, 14- speed reducers, 15- screw pairs, 16- shift forks, 18- axle end baffle plates, 81,84- thrust bearing outer rings, 82- are close
Seal, 83- thrust bearing inner rings, 85- roller bearing inner rings, 86- cylindrical rollers, 87- ball rolling elements.
Specific implementation mode
To enable the above-mentioned and other purposes, feature and advantage of the utility model to be clearer and more comprehensible, below in conjunction with attached drawing and
Preferred embodiment is described further the structure and working principle of the utility model, but embodiment is not intended as to this practicality newly
The restriction of the protection domain of type.
Embodiment 1
Permanent magnet soft starter as shown in Figure 1, including power rotor, driven rotor, executing agency and control mechanism.Actively
Rotor includes flange shaft sleeve 1, power rotor carrier 2, power rotor magnet steel 4, power rotor magnet steel 5；Driven rotor includes driven
Rotor carrier 7, copper conductor 3, combination bearing 8, bearing (ball) cover 9, hub splines 10 and axle end baffle plate 18；Executing agency includes servo
Motor 13, deceleration mechanism 14, screw pair 15, shift fork 16；Control mechanism includes input terminal speed probe 11, output end rotating speed biography
Sensor 17 and controller 12 include signal transmission and conversion equipment in sensor, include signal processing unit and letter in controller
Number output unit.
Combination bearing schematic diagram included in driven rotor as shown in Figure 2, including thrust bearing outer ring 81, thrust axis
Bearing outer-ring 84, sealing ring 82, thrust bearing inner ring 83, roller bearing inner ring 85, cylindrical roller 86, ball rolling element 87.
Embodiment 2
Fig. 3 show the structural schematic diagram of another embodiment of the utility model, compared with the utility model embodiment one, increases
If case supports and bearing, input terminal and output end are axis, remaining part is constant.
The utility model embodiment operation principle：
Asynchronous soft start：
Power rotor is rotated with driving end (such as motor shaft) in advance first, that is, drives power rotor magnet steel 4 and 5 to rotate, production
Raw rotating excitation field measures power rotor rotating speed by the input terminal speed probe 11 in control mechanism, passes through output end rotating speed
Sensor 17 measures driven rotor rotating speed (driven rotor rotating speed is zero at this time), this rotary speed information feeds back to controller, controller
Instruction is sent out, the action of control executing agency drives shift fork 16 to make 8 axially loaded of combination bearing, accordingly especially by screw pair 15
Ground pushes driven rotor carrier 7 to make axial sliding along hub splines 10 so that on the copper conductor 3 and power rotor on driven rotor
4 progressive coupling of permanent magnetic steel, driven rotor moved up by slowly brought.By measuring power rotor rotating speed and driven rotor in real time
This rotary speed information is reached controller 12, and makes logic judgment by rotating speed, when power rotor rotating speed and driven rotor rotating speed difference
When reaching the stationary value of a certain setting, control system thinks that soft start is completed, i.e., using tach signal as logic judgment foundation,
The size of driven rotor and the progressive coupling area of power rotor is controlled, it is different to realize to accurately control the time of asynchronous coupling
Walk the purpose of soft start.After control system judges to complete asynchronous soft start, power rotor magnet steel 5 and driven rotor magnet steel at this time
Air gap value needed for gap width and not up to axial coupling between 6, therefore torque is not transmitted between the two.
Synchronous operation：
When input terminal speed probe 11 and output end speed probe 17 detect turn of power rotor and driven rotor
When speed difference value reaches the stationary value of a certain setting, illustrate that soft start is completed in load, driven rotor rotating speed lags behind power rotor
Rotating speed, but the rotating speed difference very little of power rotor and driven rotor at this time.12 signal output unit of controller, which is sent a command to, to be held
Row mechanism quickly adjusts driven rotor and is axially slid along spline, i.e., quickly adjusts driven rotor magnet steel 6 and power rotor magnet steel 5
Between air gap value, both make to participate in synchronous magnetic coupling in very short time.Although the rotating speed of driven rotor slightly lags behind at this time
Power rotor rotating speed, but high-speed cruising, axial coupling need to only compensate and turn without overcoming driven rotor moment of inertia driven rotor
Speed difference, therefore power rotor and driven rotor can reach synchronous operation within a short period of time.Power rotor and driven rotor reach
To after synchronous operation, copper conductor 3 on driven rotor with the permanent magnetic steel 4 on power rotor without coupling, i.e. equipment at this time
It is completely in the high efficiency synchronous operation phase.
Soft stop：
When running equipment needs parking, controller 12 receives stop sign, passes through actuating mechanism controls driven rotor
It is detached from rapidly and couples first with axial direction (synchronous) magnetic coupling of power rotor, is i.e. driven rotor magnet steel 6 and power rotor magnet steel 5 is de-
From coupling, power rotor permanent magnetic steel 4 is had an effect with asynchronous couple of driven rotor metallic conductor 3 at this time, further by holding
Row mechanism controls participate in the size of radial asynchronous coupling, it is made to be progressively smaller until that power rotor divides completely with driven rotor
From at this time by motor stopping, realizing soft stop, while getting ready for next soft start.
In the embodiment above, combination bearing 8 is the combination of dual thrust bearing and cylinder roller bearing, can bear axial push away
Power and radial load.
By above example, the utility model provides the technology that asynchronous soft start, synchronous operation and soft stop combine
Scheme is suitable for the large rotating inertias such as large-scale belt conveyor, ball mill the advantages of combining asynchronous starting and run simultaneously
The soft start of equipment has higher industrial application value.
The above is only the preferred embodiments of the present utility model only, and protection scope of this utility model cannot be limited by this,
Those skilled in the art are new according to the utility model claims book and practicality under the premise of being detached from the principles of the present invention
The simple equivalence changes that type content is made and modification, all still fall within the protection domain of the utility model patent application.
Claims (16)
1. a kind of permanent magnet soft starter, it is characterised in that：The permanent magnet soft starter includes power rotor, driven rotor, execution
Mechanism and control mechanism, the power rotor is equipped with the first permanent magnetic steel and the second permanent magnetic steel, wherein first permanent-magnet magnetic
Steel is cartridge type, and second permanent magnetic steel is disc type, and the driven rotor is equipped with metallic conductor and third permanent magnetic steel, described
Metallic conductor is cartridge type, and the third permanent magnetic steel is disc type；First permanent magnetic steel participates in radial with the metallic conductor
Magnetic coupling, second permanent magnetic steel participate in axial magnetic coupling with the third permanent magnetic steel；The driven rotor is held with described
Row mechanism couples, and the executing agency couples with the controller.
2. permanent magnet soft starter as described in claim 1, it is characterised in that：The executing agency can control first permanent magnetism
The progressive coupling of magnet steel and the metallic conductor detaches；The executing agency can control second permanent magnetic steel and the third
Permanent magnetic steel couples or separation.
3. permanent magnet soft starter as described in claim 1, it is characterised in that：The power rotor further includes flange shaft sleeve and forever
Magnet rotor carrier.
4. permanent magnet soft starter as claimed in claim 3, it is characterised in that：The flange shaft sleeve and the p-m rotor carrier
It is fixedly connected.
5. permanent magnet soft starter as described in claim 1, it is characterised in that：The driven rotor further include hub splines, from
Turn subcarrier, combination bearing, bearing (ball) cover, axle end baffle plate.
6. permanent magnet soft starter as claimed in claim 5, it is characterised in that：Between the driven rotor carrier and hub splines
Coupled by spline.
7. permanent magnet soft starter as claimed in claim 5, it is characterised in that：The axle end baffle plate outer diameter is more than outside hub splines
Diameter, and be to be fixedly connected between the two.
8. permanent magnet soft starter as claimed in claim 5, it is characterised in that：The combination bearing is located at outside driven rotor carrier
Side, and be fixedly connected with bearing (ball) cover.
9. permanent magnet soft starter as described in claim 1, it is characterised in that：The permanent magnet soft starter further includes case supports
Part and bearing, case supports part both ends pass through the splined shaft of the flange shaft sleeve and driven rotor of bearing and power rotor respectively
Set connection.
10. permanent magnet soft starter as claimed in claim 5, it is characterised in that：In the driven rotor metallic conductor with it is driven
Rigid attachment between rotor carrier.
11. the permanent magnet soft starter as described in any one of claim 5 or 8, it is characterised in that：The combination bearing includes double
Thrust bearing and cylinder roller bearing.
12. permanent magnet soft starter as described in claim 1, it is characterised in that：The executing agency is by servomotor, gear reducer
Structure, lead screw auxiliary structure and shift fork connection composition.
13. permanent magnet soft starter as described in claim 1, it is characterised in that：The control mechanism includes rotation-speed measuring device
And controller.
14. permanent magnet soft starter as claimed in claim 12, it is characterised in that：The shift fork and the combination on the outside of driven rotor
Bearing couples.
15. permanent magnet soft starter as claimed in claim 13, it is characterised in that：The rotation-speed measuring device includes that input terminal turns
Fast sensor, output end speed probe and signal transmission and conversion equipment.
16. permanent magnet soft starter as claimed in claim 13, it is characterised in that：The controller include signal processing unit and
Signal output unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820201567.9U CN207868977U (en) | 2018-02-05 | 2018-02-05 | A kind of permanent magnet soft starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820201567.9U CN207868977U (en) | 2018-02-05 | 2018-02-05 | A kind of permanent magnet soft starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207868977U true CN207868977U (en) | 2018-09-14 |
Family
ID=63457500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820201567.9U Active CN207868977U (en) | 2018-02-05 | 2018-02-05 | A kind of permanent magnet soft starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207868977U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110120735A (en) * | 2018-02-05 | 2019-08-13 | 江苏磁谷科技股份有限公司 | A kind of permanent magnet soft starter |
| CN112510916A (en) * | 2020-11-30 | 2021-03-16 | 江苏苏美达五金工具有限公司 | Slot type tombarthite permanent magnet brushless motor |
-
2018
- 2018-02-05 CN CN201820201567.9U patent/CN207868977U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110120735A (en) * | 2018-02-05 | 2019-08-13 | 江苏磁谷科技股份有限公司 | A kind of permanent magnet soft starter |
| CN112510916A (en) * | 2020-11-30 | 2021-03-16 | 江苏苏美达五金工具有限公司 | Slot type tombarthite permanent magnet brushless motor |
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