CN203717835U - Permanent magnet transmission device with function of heat dissipation through forced convection - Google Patents
Permanent magnet transmission device with function of heat dissipation through forced convection Download PDFInfo
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- CN203717835U CN203717835U CN201420076929.8U CN201420076929U CN203717835U CN 203717835 U CN203717835 U CN 203717835U CN 201420076929 U CN201420076929 U CN 201420076929U CN 203717835 U CN203717835 U CN 203717835U
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- axial
- flow blower
- permanent magnetic
- transmission device
- disk
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Abstract
The utility model discloses a permanent magnet transmission device with a function of heat dissipation through forced convection. A motor (1), a first axial flow fan (3), a magnetic conducting disc (4), a permanent magnet disc (8), a second axial flow fan (6) and loading equipment (7) are arranged sequentially from front to back, wherein an air gap (9) is formed between the magnetic conducting disc and the permanent magnet disc, and a controller (10) for controlling the air gap is arranged; the first axial flow fan and the magnetic conducting disc are mounted on a driving shaft (2) of the motor respectively; and the permanent magnet disc, the second axial flow fan and the loading equipment are mounted on a driven shaft (5) respectively. The permanent magnet transmission device is reliable in structure deign, simple in structure and good in heat dissipation effect, and doesn't require an external fan.
Description
Technical field
The utility model relates to a kind of transmission device, relates generally to a kind of permanent magnetic transmission device with forced convection heat radiation.
Background technique
Magnetic actuator is widely used in the industries such as electric power, petrochemical industry, iron and steel, pharmacy, metallurgy as a kind of gearing.Magnetic actuator is a kind of transmission device that sees through air gap transmitting torque, between motor and load equipment rotating shaft without mechanical link, general permanent magnet and the control box being connected by the magnet case being connected with motor, with load forms, between the magnet case rotating and permanent magnet, there is certain air clearance, can be divided into disc type, cartridge type, hybrid etc. by the difference of magnet case and magnet structure.Taking desk permanent-magnet driver as example, when motor rotation, drive magnetic conductive disk cutting magnetic line in the magnetic field of permanent magnetic disk generation, in magnetic conductive disk, produce foucault current, foucault current produces induction field on magnetic conductive disk, form strong magnetic torque, pull permanent magnetic disk to produce relative movement, thereby realize the torque transfer between motor and load.Magnetic actuator relies on magnetic force to carry out transmission, and its motor side and load end, without physical contact, have advantages such as allowing larger error of centralization, vibration damping, soft start, long service life.The structural feature of permanent magnet transmission makes it be easy to realize speed-regulating function, and change rotor spacing and can change magnetic field and realize stepless speed regulation, air clearance hour between rotor, the torque of output is large, and when between rotor, air clearance is large, the torque of output is little.In practical engineering application, exist the occasion that needs in a large number speed governing, frequency control of motor speed is to apply at present commonplace speed adjusting technique, can effectively automatically carry out rotating speed control according to actual conditions.Compared with frequency control of motor speed, permanent magnet transmission speed governing can not produce harmonic wave and electromagnetic interference, can allow motor frequently to restart and make motor long-time running in unloaded state, without independent installing space, accommodative ability of environment is strong, and permanent magnetic speed-adjusting is pure mechanical structure, and maintenance cost is low, possible operation troubles is foreseeable, and the core of frequency control of motor speed is complicated electronic equipment, maintenance cost is high, and its operation troubles is difficult to prediction, therefore, magnetic actuator has obtained application more and more widely.
Magnetic actuator, in the time of work, will produce certain eddy current loss in conductor disc, and this loss will be converted into heat energy, and especially, in the time that load is lower, the heat of generation is larger.The bad meeting of dispelling the heat makes device feature excess Temperature even cause the demagnetization of permanent magnet high temperature, and therefore, effectively heat radiation is the essential condition that ensures permanent magnetic transmission device safe and stable operation.That common cooling measure has is air-cooled, three kinds of water-cooled and oil coolings.Water-cooled and oil cooling device exist the shortcomings such as cost is high, sealing is difficult, perishable, complex structure, and current wind-cooling heat dissipating is mainly to rely on the rotating centrifugal heat radiation of self and the heat radiation of radiating fin, and heat dissipation potential is poor.
Summary of the invention
The utility model, for the bad feature of existing permanent magnetic transmission device wind-cooling heat dissipating, provides a kind of permanent magnetic transmission device with forced convection heat radiation, can effectively dispel the heat to permanent magnetic transmission device, and simple in structure, without setting up external equipment and power.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of permanent magnetic transmission device with forced convection heat radiation, by being disposed with motor, the first axial-flow blower, magnetic conductive disk, permanent magnetic disk, the second axial-flow blower and load equipment after forward direction, between magnetic conductive disk and permanent magnetic disk, form air gap, and arrange and control the controller of size of gaps, wherein the first axial-flow blower, magnetic conductive disk are arranged on respectively on the driving shaft of motor, and permanent magnetic disk, the second axial-flow blower and load equipment are contained in respectively on driven shaft.
As to further improvement of the utility model, on driving shaft and driven shaft, keyway is set, the first axial-flow blower and the second axial-flow blower are coordinated and are arranged on driving shaft and driven shaft by key and keyway respectively; On driving shaft, the installation direction of the first axial-flow blower is: air-flow flows to magnetic conductive disk direction from motor drive direction; On driven shaft, the installation direction of the second axial-flow blower is: air-flow flows to permanent magnetic disk direction from load equipment direction; The diameter of the first axial-flow blower and the second axial-flow blower is less than respectively the diameter of magnetic conductive disk and permanent magnetic disk.
In 2 blower fans whens running, although the flow direction of air is relative, because distance is short and blower fan diameter is less than the diameter of dish, air-flow blows to Pan Chu and is blocked, and will spread to surrounding along disk surface direction, and therefore the forced convection of two blower fans heat radiation can not influence each other.Blower fan that driving shaft is with keeps constant speed running, driven shaft with blower fan with load variation changed speed operation, first, second axial-flow blower of installing designs by conditions such as the rated power of magnetic actuator, rotational speed regulation scope, Environmental Conditions, the highest permission operating temperature and available axial distances, ensures that enough air quantity and blast carry out forced convection heat radiation to magnetic actuator.
The utility model structural design is reliable, directly utilize the rotary actuation axial-flow blower of permanent magnetic transmission device axle to obtain the forced convection required mobile wind that dispels the heat, without by external fan, simple in structure, air directly blows to hot metal dish surface with certain speed, good heat dissipation effect, if metal dish surface is provided with radiating fin, radiating effect will further get a promotion.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment:
Below in conjunction with Fig. 1, the utility model is described further:
A kind of permanent magnetic transmission device with forced convection heat radiation that the utility model provides, by being disposed with motor 1, the first axial-flow blower 3, magnetic conductive disk 4, permanent magnetic disk 5, the second axial-flow blower 6 and load equipment 7 after forward direction, between magnetic conductive disk 4 and permanent magnetic disk 5, form air gap 9, and arrange and control the controller 10 of size of gaps, wherein the first axial-flow blower 3, magnetic conductive disk 4 are arranged on respectively on the driving shaft 2 of motor 1, and permanent magnetic disk 8, the second axial-flow blower 6 and load equipment 7 are contained in respectively on driven shaft 5; On driving shaft 2 and driven shaft 5, keyway is set, the first axial-flow blower 3 and the second axial-flow blower 6 are coordinated and are arranged on driving shaft 2 and driven shaft 5 by key and keyway respectively; On driving shaft 2, the installation direction of the first axial-flow blower 3 is: air-flow flows to magnetic conductive disk 4 directions from motor 1 direction; On driven shaft, the installation direction of the second axial-flow blower 6 is: air-flow flows to permanent magnetic disk 8 directions from load equipment 7 directions; The diameter of the first axial-flow blower 3 and the second axial-flow blower 6 is less than respectively the diameter of magnetic conductive disk 4 and permanent magnetic disk 8.
When use, motor 1 is opened, driving shaft 2 rotates with constant speed, cutting magnetic line in the magnetic field that drive magnetic conductive disk 4 produces at permanent magnetic disk 8, in magnetic conductive disk 4, produce foucault current, foucault current produces induction field on magnetic conductive disk 4, form strong magnetic torque, pull permanent magnetic disk 8 to produce relative movement, the driven shaft 5 that rotarily drives of permanent magnetic disk 8 rotates, drive load equipment 7 to work, controller 10 is according to the size of the air gap 9 between the working condition control magnetic conductive disk 4 of load equipment 7 and permanent magnetic disk 8, load greatly air gap is little, output speed is large, otherwise, the little air gap of load is large, output speed is little.When work, the first axial-flow blower 3 and the second axial-flow blower 6 all rotate, the airflow direction of the first axial-flow blower 3 is for to flow to magnetic conductive disk 4 from motor 1, the airflow direction of the second axial-flow blower 6 flows to permanent magnetic disk 8 from load equipment 7, cause the first axial-flow blower 3 and the second axial-flow blower 6 external diameters are less than the external diameter of magnetic conductive disk 4, permanent magnetic disk 8, air-flow blows to Pan Chu and is blocked, and spreads to surrounding along disk surface direction, and metal dish is carried out to efficiently radiates heat.
The utility model is not limited to above-mentioned mode of execution; anyone can draw other forms of product under enlightenment of the present utility model; as being designed to core structure, axial-flow blower, magnetic drive device is arranged on one-sided but not bilateral etc.; no matter but do any variation in its shape or structure; every technological scheme identical or close with the utility model, all within protection domain.
Claims (4)
1. the permanent magnetic transmission device with forced convection heat radiation, it is characterized in that, by being disposed with motor (1) after forward direction, the first axial-flow blower (3), magnetic conductive disk (4), permanent magnetic disk (8), the second axial-flow blower (6) and load equipment (7), between magnetic conductive disk (4) and permanent magnetic disk (8), form air gap (9), and arrange and control the controller (10) of size of gaps, wherein the first axial-flow blower (3), magnetic conductive disk (4) is arranged on respectively on the driving shaft (2) of motor (1), permanent magnetic disk (8), the second axial-flow blower (6) and load equipment (7) are contained in respectively on driven shaft (5).
2. a kind of permanent magnetic transmission device with forced convection heat radiation according to claim 1, it is characterized in that, on driving shaft (2) and driven shaft (5), keyway is set, the first axial-flow blower (3) and the second axial-flow blower (6) are coordinated and are arranged on driving shaft (2) and driven shaft (5) by key and keyway respectively.
3. a kind of permanent magnetic transmission device with forced convection heat radiation according to claim 1, is characterized in that, the installation direction of upper the first axial-flow blower of driving shaft (2) (3) is: air-flow flows to magnetic conductive disk (4) direction from motor (1) direction; The installation direction of upper the second axial-flow blower of driven shaft (5) (6) is: air-flow flows to permanent magnetic disk (6) direction from load equipment (7) direction.
4. a kind of permanent magnetic transmission device with forced convection heat radiation according to claim 1, is characterized in that, the diameter of the first axial-flow blower (3) and the second axial-flow blower (6) is less than respectively the diameter of magnetic conductive disk (4) and permanent magnetic disk (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420076929.8U CN203717835U (en) | 2014-02-24 | 2014-02-24 | Permanent magnet transmission device with function of heat dissipation through forced convection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420076929.8U CN203717835U (en) | 2014-02-24 | 2014-02-24 | Permanent magnet transmission device with function of heat dissipation through forced convection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717835U true CN203717835U (en) | 2014-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420076929.8U Expired - Fee Related CN203717835U (en) | 2014-02-24 | 2014-02-24 | Permanent magnet transmission device with function of heat dissipation through forced convection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717835U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775604A (en) * | 2014-02-24 | 2014-05-07 | 广东石油化工学院 | Permanent magnet transmission device with forced convection radiating function |
| CN107659116A (en) * | 2016-07-23 | 2018-02-02 | 李启飞 | Very big load regulatable magnetic force retarder |
-
2014
- 2014-02-24 CN CN201420076929.8U patent/CN203717835U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775604A (en) * | 2014-02-24 | 2014-05-07 | 广东石油化工学院 | Permanent magnet transmission device with forced convection radiating function |
| CN107659116A (en) * | 2016-07-23 | 2018-02-02 | 李启飞 | Very big load regulatable magnetic force retarder |
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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: 20140716 Termination date: 20150224 |
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| EXPY | Termination of patent right or utility model |