CN203827115U - Rotary eddy current braking motor of building tower crane - Google Patents
Rotary eddy current braking motor of building tower crane Download PDFInfo
- Publication number
- CN203827115U CN203827115U CN201420190869.2U CN201420190869U CN203827115U CN 203827115 U CN203827115 U CN 203827115U CN 201420190869 U CN201420190869 U CN 201420190869U CN 203827115 U CN203827115 U CN 203827115U
- Authority
- CN
- China
- Prior art keywords
- tower crane
- braking
- motor
- eddy current
- asynchronous motor
- 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.)
- Expired - Fee Related
Links
- 241000555745 Sciuridae Species 0.000 claims description 16
- 238000000034 method Methods 0.000 abstract description 3
- 230000005284 excitation Effects 0.000 abstract 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 230000000737 periodic effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
The utility model discloses a rotary eddy current braking motor of a building tower crane, and the rotary eddy current braking motor is composed of a three-phase AC squirrel-cage asynchronous motor and an eddy current brake. The eddy current brake comprises magnetic poles, an excitation coil and an armature; the magnetic poles and the excitation coil are installed on an inner side of a rear cover of the three-phase AC squirrel-cage asynchronous motor, the armature is installed on an output shaft of the three-phase AC squirrel-cage asynchronous motor, gaps are reserved between the armature and the magnetic poles, and the output shaft of the three-phase AC squirrel-cage asynchronous motor is connected with a speed reducer of a rotary mechanism of the building tower crane. Starting performance and braking performance of the motor of the building tower crane are improved, and the rotary eddy current braking motor can be suitable for an interrupted periodic working system and more frequent starting and braking; and safety and stationarity of a starting or braking process are realized, a rotary speed is prevented from being changed suddenly, requirements of rotary braking of the building tower crane are satisfied, and safety of high-attitude operation of the building tower crane is improved.
Description
Technical field
The utility model relates to technical field of motors, especially a kind of tower crane revolution eddy current braking motor.
Background technology
The volume and weight of tower crane revoliving arm is larger, and inertia is large, and the braking moment needing is also very large.But be mostly adopted as at present hydraulically powered mechanical braking, because braking distance is long, mechanical oscillation are large, are unfavorable for the safety of the high dry running of tower crane.
Utility model content
The purpose of this utility model is to provide a kind of tower crane revolution eddy current braking motor, can realize the safe, steady of startup or braking procedure, prevents rotating speed sudden change, the fail safe that improves the high dry running of tower crane.
The technical solution adopted in the utility model is as follows:
The utility model tower crane revolution eddy current braking motor is made up of three-phase alternating current squirrel cage asynchronous motor and eddy-current brake, and eddy-current brake comprises magnetic pole, magnet exciting coil and armature; Magnetic pole and magnet exciting coil are arranged on the rear end cap inner side of three-phase alternating current squirrel cage asynchronous motor, armature be arranged on the output shaft of three-phase alternating current squirrel cage asynchronous motor and and magnetic pole between leave space, the output shaft of cross streams squirrel cage asynchronous motor is connected with the decelerator of tower crane slew gear.
Described magnetic pole is provided with two groups, is all placed in the inner side of magnet exciting coil.
The utlity model has following beneficial effect:
The utility model tower crane revolution eddy current braking motor has stronger overload capacity and mechanical strength, has improved starting and the braking ability of motor, can be applicable to interruption period sex work system and compared with Fraquent start and braking; Realize the safe, steady of startup or braking procedure by the exciting current adjusting brake moment that changes eddy-current brake, make the revolution of derrick crane reach startup smoothly, again can level and smooth soft braking when braking, prevent rotating speed sudden change, meet the demand of tower crane rotary braking, improved the fail safe of the high dry running of tower crane.
Brief description of the drawings
Fig. 1 is the utility model circuit structure block diagram.
In figure: 1: the first magnetic pole, 2: the second magnetic poles, 3: magnet exciting coil, 4: armature, 5: motor rear end plate, 6: three-phase alternating current squirrel cage asynchronous motor, 7: output shaft.
Embodiment
Below in conjunction with Fig. 1, embodiment of the present utility model is elaborated.
A kind of tower crane revolution eddy current braking motor, is made up of three-phase alternating current squirrel cage asynchronous motor 6 and eddy-current brake, and eddy-current brake comprises the first magnetic pole 1, the second magnetic pole 2, magnet exciting coil 3 and armature 4; The first magnetic pole 1, the second magnetic pole 2, magnet exciting coil 3 are fixed on the rear end cap inner side of three-phase alternating current squirrel cage asynchronous motor 6, magnet exciting coil 3 leading-out end line connect external power source, the first magnetic pole 1 and the second magnetic pole 2 are installed in the inner side of magnet exciting coil 3, armature be arranged on the output shaft 7 of three-phase alternating current squirrel cage asynchronous motor and and magnetic pole between leave space, the output shaft 7 of cross streams squirrel cage asynchronous motor is connected with the decelerator of tower crane slew gear.
Rotation together with the output shaft 7 of described armature 4 and three-phase alternating current squirrel cage asynchronous motor 6.
Operation principle of the present utility model is:
Actuating motor 6, and magnet exciting coil 3 is passed into direct current, the magnetic flux that the first magnetic pole 1 and the second magnetic pole 2 produce forms closed-loop path by air-gap and armature 4, due to rotation together with the output shaft 7 of armature 4 and three-phase alternating current squirrel cage asynchronous motor 6, produce eddy current at armature 4 internal inductions, this electric current and magnetic field produce electromagnetic force, the opposite direction that the direction of this electromagnetic force and armature 4 rotate, therefore played Braking, the long-pending braking moment that is of this braking force and armature 4 radiuses.Under certain exciting current, along with rise of rotational speed, the braking moment producing increases, reaching after certain rotating speed, because length of penetration, magnetic field intensity and the magnetic capacity of magnetic flux and electric current in armature 4 is along with the variation of revolutional slip changes, make electric Handcuffs 4 iron circuits saturated, because the demagnetizing effect of armature reaction strengthens, torque growth rate slows down gradually.After exciting current changes, braking moment also changes, the braking moment changing passes to the vertical-type planetary gear reduction unit of tower crane slew gear by the output shaft 7 of three-phase alternating current squirrel cage asynchronous motor 6, vertical-type planetary gear reduction unit drives revolution pinion, thereby drive the rotation tower body that is placed in tower machine upper, the revolution of the left and right such as elevator boom rack and counter-jib, its rotating speed is 0.56r/min, owing to adopting eddy speed regulating, make revolution starting and braking steadily, prevent rotating speed sudden change, meet the demand of tower crane rotary braking, improve the fail safe of the high dry running of tower crane.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although the utility model is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: those skilled in the art still can change, revise or be equal to replacement embodiment of the present utility model after reading the application, and it all should be encompassed in the middle of claim scope of the present utility model.
Claims (2)
1. a tower crane revolution eddy current braking motor, is characterized in that, it is made up of three-phase alternating current squirrel cage asynchronous motor and eddy-current brake, and eddy-current brake comprises magnetic pole, magnet exciting coil and armature; Magnetic pole and magnet exciting coil are arranged on the rear end cap inner side of three-phase alternating current squirrel cage asynchronous motor, armature be arranged on the output shaft of three-phase alternating current squirrel cage asynchronous motor and and magnetic pole between leave space, the output shaft of three-phase alternating current squirrel cage asynchronous motor is connected with the decelerator of tower crane slew gear.
2. tower crane revolution eddy current braking motor according to claim 1, is characterized in that, described magnetic pole is provided with two groups, is all placed in the inner side of magnet exciting coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420190869.2U CN203827115U (en) | 2014-04-18 | 2014-04-18 | Rotary eddy current braking motor of building tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420190869.2U CN203827115U (en) | 2014-04-18 | 2014-04-18 | Rotary eddy current braking motor of building tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203827115U true CN203827115U (en) | 2014-09-10 |
Family
ID=51482576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420190869.2U Expired - Fee Related CN203827115U (en) | 2014-04-18 | 2014-04-18 | Rotary eddy current braking motor of building tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203827115U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113162508A (en) * | 2021-06-04 | 2021-07-23 | 潍柴动力股份有限公司 | Control system and control method of hybrid excitation motor |
| WO2023227297A1 (en) * | 2022-05-24 | 2023-11-30 | Robert Bosch Gmbh | Electric machine with integrated eddy current brake |
-
2014
- 2014-04-18 CN CN201420190869.2U patent/CN203827115U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113162508A (en) * | 2021-06-04 | 2021-07-23 | 潍柴动力股份有限公司 | Control system and control method of hybrid excitation motor |
| CN113162508B (en) * | 2021-06-04 | 2023-01-06 | 潍柴动力股份有限公司 | Control system and control method of hybrid excitation motor |
| WO2023227297A1 (en) * | 2022-05-24 | 2023-11-30 | Robert Bosch Gmbh | Electric machine with integrated eddy current brake |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101404435A (en) | Magnetic field speed reduction type low speed large torque moment permanent-magnet brushless DC motor | |
| CN101662195B (en) | Permanent magnet synchronous motor for hoisting mechanism of direct-drive crane | |
| WO2015055084A1 (en) | Asynchronous permanent magnet synchronous generator | |
| CN203486813U (en) | Winch device directly driven by low-speed permanent magnet synchronous motor | |
| CN102904405A (en) | A double-rotor synchronous generator | |
| CN103532341B (en) | A kind of permanent-magnet eddy current speed regulator of quick adjustable magnetic | |
| CN203827115U (en) | Rotary eddy current braking motor of building tower crane | |
| CN104578684B (en) | A kind of electromagnetism liquid-cooled retarder of external rotor structure | |
| CN201813297U (en) | Switched Reluctance Power Motor | |
| CN104150330A (en) | Magnetic-resistance type toothless elevator traction machine | |
| CN206787279U (en) | A kind of permanent magnet direct-drive system for rotary kiln | |
| CN104901508B (en) | A kind of Linear-rotation permanent-magnet actuator and control method using consequent pole structure | |
| CN201577011U (en) | Permanent synmotor used for hoisting mechanism of inner rotor direct-drive type crane | |
| CN204778533U (en) | Magneto installs electric block inside | |
| CN110492710B (en) | Double-rotor generator and control method thereof | |
| CN204490391U (en) | Oil-well rig external rotor permanent magnet synchronous machine direct-drive winch | |
| CN201213237Y (en) | A magnetic field deceleration type low-speed high-torque permanent magnet brushless DC motor | |
| CN204802901U (en) | Tower machine rotation mechanism's stepless speed control control system | |
| CN110048571A (en) | Three-phase permanent magnet synchronous motor and starting method thereof | |
| CN212246026U (en) | Embedded electric winch | |
| CN104767331A (en) | Stator-movable type self-speed-regulating permanent magnet motor | |
| CN203522497U (en) | Non-wear induction speed-reduction variable-speed motor | |
| CN103023242A (en) | Stator-free brushless double-rotor inner-ring permanent magnet synchronous motor with rotary controller | |
| CN202261134U (en) | Outer rotor switch magnetic-resistance traction drive unit | |
| CN202798422U (en) | Magnetic induction type magnetic transmission device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20170418 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |