CN116365776A - Low-voltage high-current inner rotor permanent magnet synchronous servo motor - Google Patents
Low-voltage high-current inner rotor permanent magnet synchronous servo motor Download PDFInfo
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- CN116365776A CN116365776A CN202310370409.1A CN202310370409A CN116365776A CN 116365776 A CN116365776 A CN 116365776A CN 202310370409 A CN202310370409 A CN 202310370409A CN 116365776 A CN116365776 A CN 116365776A
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- permanent magnet
- servo motor
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 34
- 238000009423 ventilation Methods 0.000 claims abstract description 27
- 239000000428 dust Substances 0.000 claims abstract description 16
- 230000017525 heat dissipation Effects 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 230000003287 optical effect Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 59
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 239000010687 lubricating oil Substances 0.000 description 9
- 230000000903 blocking effect Effects 0.000 description 7
- 238000005461 lubrication Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2210/00—Applications
- F16N2210/14—Bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2210/00—Applications
- F16N2210/18—Electric motors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The invention discloses a low-voltage high-current inner rotor permanent magnet synchronous servo motor, which belongs to the field of servo motors and comprises a shell, wherein an inner cavity is formed in the shell, a separation plate is fixedly connected in the inner cavity, the separation plate separates the inner cavity into a left cavity and a right cavity, the inner wall of the right cavity is fixedly connected with a stator, a rotor is movably connected in the stator, and one end of the rotor is fixedly connected with an output shaft; the other end fixedly connected with pivot of rotor, and the pivot tip runs through the division board and extends to inside the left cavity, fixedly connected with apron on the lateral surface of the indoor pivot of left side, and apron one side fixedly connected with impeller, one side of impeller is equipped with automatic switch ventilation cooling subassembly, the top of apron is equipped with the oiling subassembly. According to the invention, through the automatic switch ventilation heat dissipation assembly, heat dissipation can be performed without sealing when the motor is in operation, and dust prevention can be performed without sealing when the motor is in operation.
Description
Technical Field
The invention relates to a servo motor, in particular to a low-voltage high-current inner rotor permanent magnet synchronous servo motor.
Background
Motors used in various fields are supplied by 220V/380V high-voltage power supply or 24V/48V low-voltage power supply, but have small output power. When the motor is inconvenient to supply power by a high-voltage power supply and requires higher output power. In the state, the low-voltage power supply and the large-current output motor are generated, and the permanent magnet synchronous servo motor in the low-voltage large-current motor has the best stability and is widely used.
The existing low-voltage high-current permanent magnet synchronous servo motor has some defects when in use, because the current is large, more heat can be generated in the inner part than that of a general permanent magnet synchronous motor, particularly, the inner rotor structure is characterized in that the heat in the inner space of the stator winding is not easy to diffuse out due to the fact that the main heat generation amount is on the stator winding, the outer rotor structure can smoothly transfer the internal heat to the shell so as to dissipate heat due to the rotation of the outer rotor, and therefore the inner rotor permanent magnet synchronous servo motor needs to better solve the heat dissipation problem, normal operation of the low-voltage high-current permanent magnet synchronous servo motor can be guaranteed, and the operation stability of the motor is improved.
However, if the motor is fully sealed, heat generated in the running process of the motor cannot be rapidly dissipated to affect the use, if the heat dissipation window is formed, external flying dust can enter the motor, and how to enable the motor to dissipate heat in an unsealed mode when the motor is not in operation and to achieve sealing and dust prevention when the motor is not in operation is a problem to be solved at present. Therefore, a low-voltage high-current inner rotor permanent magnet synchronous servo motor is provided by a person skilled in the art to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide a low-voltage high-current inner rotor permanent magnet synchronous servo motor, which can not be sealed for heat dissipation when the motor is in operation and can be sealed for dust prevention when the motor is not in operation through an automatic switch ventilation heat dissipation assembly, so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a low pressure heavy current inner rotor permanent magnet synchronous servo motor, includes the casing, the inner chamber has been seted up to the inside of casing, and the inner chamber inside fixedly connected with division board, the division board separates the inner chamber into left cavity and right cavity, and right cavity inner wall fixedly connected with stator, the inside swing joint of stator has the rotor, and the one end fixedly connected with output shaft of rotor; the other end fixedly connected with pivot of rotor, and the pivot tip runs through the division board and extends to inside the left cavity, inlay between pivot and the division board and be equipped with first bearing, and a plurality of evenly distributed's ventilation groove has been seted up to the division board side, fixedly connected with apron on the lateral surface of pivot in the left cavity, and apron side fixedly connected with impeller, one side of impeller is equipped with automatic switch ventilation cooling subassembly, the top of apron is equipped with the oiling subassembly.
As a further scheme of the invention: the automatic switch ventilation cooling assembly specifically includes: offer the circular slot in a side of casing, the inside swing joint of circular slot has the fender lid, and keeps off a plurality of optical axes that become circular distribution of lid side border fixedly connected with, a plurality of optical axes run through the circular slot inner wall and extend to in the left cavity and common fixedly connected with removes the ring body, and remove the outer wall card of ring body and offer the inside movable of ring channel on the left cavity inner wall, it inlays and is equipped with first ring magnet to remove a side of ring body, the position that the left cavity inner wall corresponds first ring magnet inlays and is equipped with second ring magnet, and magnetism repulsion between first ring magnet and the second ring magnet, a plurality of evenly distributed and the vent with left cavity intercommunication has been offered on the circular slot one side inner wall.
As still further aspects of the invention: an annular arc plate is fixedly connected to the outer wall of the movable ring body, and the annular arc plate is in contact with the inner wall of the annular groove.
As still further aspects of the invention: the other side of the movable ring body is fixedly connected with a shaft lever at a position close to the edge, one end of the shaft lever is movably connected inside a shaft hole formed in the inner wall of the annular groove, a first spring column is sleeved outside the shaft lever, and two ends of the first spring column are fixedly connected with the movable ring body and the inner wall of the annular groove respectively.
As still further aspects of the invention: the oiling subassembly specifically includes: offer the oiling chamber in the inner chamber top, the flexible groove has been seted up on the left cavity inner wall of oiling chamber below, and the inside swing joint in flexible groove has the telescopic link, the bottom of telescopic link inlays and is equipped with mobilizable ball, and ball swing joint in the annular spout that the apron side was seted up, the inside fixedly connected with bump of annular spout, the top fixedly connected with jacking rod of telescopic link, and the top of jacking rod runs through flexible groove roof and extends to oiling intracavity portion and fixedly connected with baffle, the through-hole has been seted up to a side of baffle, the oil guide chamber has been seted up to one side of oiling chamber, and is equipped with the cavity way intercommunication between oil guide chamber bottom and the first bearing, be equipped with oil guide hole intercommunication between oil guide chamber and the oiling chamber, the baffle side supports on oil guide hole one end opening, and oil guide hole and through-hole are not in same horizontal plane.
As still further aspects of the invention: the vertical hole communicated with the outside atmosphere is formed above the oil guide cavity, the ball groove is formed in the middle of the vertical hole, steel balls are arranged in the ball groove and abut against the vertical hole on the end face of the ball groove, the end faces of the ball groove on two sides of the steel balls are inclined, the end faces of the ball groove are gradually increased from the middle to two sides, and an included angle between the bottom face of the ball groove and a horizontal plane is 5 degrees.
As still further aspects of the invention: the middle position of the outer side surface of the telescopic rod is fixedly connected with a diaphragm, a second spring column is fixedly connected between the diaphragm and the inner wall of the left cavity, and the second spring column is sleeved outside the telescopic rod.
As still further aspects of the invention: the oil injection cavity top is provided with an oil injection port, and the inside of the oil injection port is detachably connected with a plug.
As still further aspects of the invention: and one side of the top end face of the shell is fixedly connected with a connector lug.
As still further aspects of the invention: the end part of the output shaft penetrates through the side wall of the right cavity and is embedded with a second bearing between the side wall of the right cavity, and one side of the second bearing is detachably connected with a dust cover.
Compared with the prior art, the invention has the beneficial effects that:
1. the application is through the automatic switch ventilation cooling subassembly that sets up, can not seal when the motor operates dispel the heat to can seal dustproof when the motor does not operate, solve the heat dissipation key problem of low pressure heavy current permanent magnet synchronous servo motor, guarantee the steady operation of motor. In addition, when the motor is not sealed in operation, wind blows outwards from the inside of the motor, and external dust can not enter the inside of the motor from the non-sealing position, so that the motor is convenient to use.
2. The utility model provides an automatic switch ventilation cooling subassembly can be when the motor is operated, drive the rotatory outside blast air of impeller through the rotor rotation, the wind energy of blowing out can outwards promote the fender lid in the circular slot, make the fender lid no longer block up the vent, and the heat that the motor operation produced is along with the air in ventilating slot, the vent is arranged outside atmosphere, accelerate the radiating rate, and when the motor is not operated, pull back the fender lid to the circular slot again through the magnetism repulsion force between first ring magnet and the second ring magnet and block up the vent, prevent external dust entering, in addition, in order to guarantee that the wind-force that the impeller produced can release the fender lid smoothly during the motor operation, add axostylus axostyle and first spring post on moving the ring body, when the motor is not operated, first spring post is in compressed state, the elastic effort of first spring post and the magnetism looks repulsion force between first ring magnet and the second ring magnet are in balanced state, only need the wind-force that the impeller produced reach very low requirement just can original fender lid, after the motor is stopped, above-mentioned two trend equilibrium point drive keeps off the lid, it is convenient to use.
3. The second bearing near the output shaft of motor is close to the port, only need dismantle the shield and come can pour into lubricating oil for the second bearing, but the inside first bearing of motor is in the inside depths of motor, and the motor is whole to be dismantled with the motor impossible oiling at every turn, consequently, this application is through the oiling subassembly that sets up, the rotation drive oiling chamber intermittent type nature of apron is to oiling chamber oil drain when can utilizing the motor to move, oil drain volume at every turn is very little, but the longer the time of motor operation, the more the oil drain number of times also just, the oil drain volume just is just bigger, just so can be according to motor duration time oil drain for first bearing.
4. Because permanent magnet synchronous servo motor is generally horizontal installation and uses, under this kind of installation condition, if lubrication is not in place between pivot and the first bearing of motor leads to the motor shake great time, the shake of motor can make the steel ball of pearl inslot roll back and forth, the perpendicular hole of pearl tank bottom terminal surface no longer is plugged up to the steel ball, in-process, the perpendicular hole intercommunication of pearl tank upper and lower side, the lubricating oil that gets into the oil guide chamber can be more quick along the cavity way injection in the first bearing under oil body dead weight and atmospheric pressure effect, thereby lubrication between messenger's pivot and the first bearing is in place fast, reduce motor shake, promote the stability of motor operation.
Drawings
FIG. 1 is a schematic diagram of a low-voltage high-current inner rotor permanent magnet synchronous servo motor;
FIG. 2 is a diagram showing the combination of a stator and a rotor in a low-voltage high-current inner rotor permanent magnet synchronous servo motor;
FIG. 3 is an interior view of the inner cavity of a low voltage high current inner rotor permanent magnet synchronous servo motor;
FIG. 4 is a side view of a housing in a low voltage high current inner rotor permanent magnet synchronous servo motor;
FIG. 5 is an enlarged view of A in FIG. 3 of a low voltage high current inner rotor permanent magnet synchronous servo motor;
FIG. 6 is an enlarged view of B in FIG. 3 of a low voltage high current inner rotor permanent magnet synchronous servo motor;
FIG. 7 is a view showing the combination of the cover, the optical axis and the moving ring in the low-voltage high-current inner rotor permanent magnet synchronous servo motor;
fig. 8 is a view showing the combination of the moving ring body and the shaft rod in the low-voltage high-current inner rotor permanent magnet synchronous servo motor.
In the figure: 1. a housing; 2. an inner cavity; 3. a partition plate; 4. a stator; 5. a rotor; 6. an output shaft; 7. a rotating shaft; 8. a second bearing; 9. a first bearing; 10. a dust cover; 11. a cover plate; 12. an impeller; 13. a ventilation groove; 14. a circular groove; 15. a blocking cover; 16. an optical axis; 17. moving the ring body; 18. a first ring magnet; 19. a second ring magnet; 20. a vent; 21. an annular groove; 22. a shaft lever; 23. a shaft hole; 24. a first spring post; 25. an annular chute; 26. a bump; 27. an oil filling cavity; 28. an oil filling port; 29. a plug; 30. an oil guiding cavity; 31. an oil guide hole; 32. a vertical hole; 33. a bead groove; 34. steel balls; 35. a cavity channel; 36. a telescopic slot; 37. a telescopic rod; 38. a membrane; 39. a second spring post; 40. a lifting rod; 41. a baffle; 42. a through hole; 43. a ball; 44. a connector lug.
Detailed Description
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 8, in the embodiment of the invention, a low-voltage high-current inner rotor permanent magnet synchronous servo motor comprises a housing 1, wherein an inner cavity 2 is formed in the housing 1, a separation plate 3 is fixedly connected in the inner cavity 2, the separation plate 3 separates the inner cavity 2 into a left cavity and a right cavity, the inner wall of the right cavity is fixedly connected with a stator 4, a rotor 5 is movably connected in the stator 4, and one end of the rotor 5 is fixedly connected with an output shaft 6; the other end fixedly connected with pivot 7 of rotor 5, and pivot 7 tip runs through division board 3 and extends to inside the left cavity, has inlayed between pivot 7 and the division board 3 and has had first bearing 9, and division board 3 side has seted up a plurality of evenly distributed's ventilation groove 13, fixedly connected with apron 11 on the lateral surface of left cavity internal rotation axle 7, and apron 11 side fixedly connected with impeller 12, one side of impeller 12 is equipped with automatic switch ventilation cooling module, and the top of apron 11 is equipped with the oiling subassembly. The application is through the automatic switch ventilation cooling assembly who sets up, can not seal when the motor operation dispels the heat to can seal dustproof when the motor is not operated.
In this embodiment: the automatic switch ventilation cooling subassembly specifically includes: the circular groove 14 is formed in one side face of the shell 1, the blocking cover 15 is movably connected to the inside of the circular groove 14, a plurality of optical axes 16 which are distributed circularly are fixedly connected to one side face edge of the blocking cover 15, the optical axes 16 penetrate through the inner wall of the circular groove 14 to extend into the left cavity and are fixedly connected with the movable ring body 17 together, the outer wall of the movable ring body 17 is clamped inside an annular groove 21 formed in the inner wall of the left cavity, a first annular magnet 18 is embedded in one side face of the movable ring body 17, a second annular magnet 19 is embedded in the position, corresponding to the first annular magnet 18, of the inner wall of the left cavity, magnetism repels each other between the first annular magnet 18 and the second annular magnet 19, and a plurality of ventilation openings 20 which are uniformly distributed and are communicated with the left cavity are formed in the inner wall of one side of the circular groove 14. When the motor is not sealed in operation, wind blows outwards from the inside of the motor, and external dust cannot enter the inside of the motor from the non-sealing position, so that the motor is convenient to use.
In this embodiment: an annular arc plate is fixedly connected to the outer wall of the movable ring body 17, and is in contact with the inner wall of the annular groove 21. The arrangement reduces the friction resistance of the moving ring 17 moving in the annular groove 21 on the premise of ensuring that the moving ring 17 is tightly matched with the annular groove 21.
In this embodiment: the other side surface of the movable ring body 17 is fixedly connected with a shaft lever 22 at a position close to the edge, one end of the shaft lever 22 is movably connected inside a shaft hole 23 formed in the inner wall of the annular groove 21, a first spring column 24 is sleeved outside the shaft lever 22, and two ends of the first spring column 24 are fixedly connected with the movable ring body 17 and the inner wall of the annular groove 21 respectively. According to the automatic switch ventilation heat dissipation assembly, when a motor is in operation, the rotor 5 rotates to drive the impeller 12 to rotate to blow air outwards, the blown wind can push the baffle cover 15 in the circular groove 14 outwards, so that the baffle cover 15 is not blocked by the ventilation opening 20, heat generated by the motor operation is discharged to the outside atmosphere along with the air along the ventilation groove 13 and the ventilation opening 20, the heat dissipation speed is accelerated, when the motor is not in operation, the baffle cover 15 is pulled back to the circular groove 14 again to block the ventilation opening 20 through magnetic repulsive force between the first annular magnet 18 and the second annular magnet 19, external dust is prevented from entering, in addition, in order to ensure that wind generated by the impeller 12 can be smoothly pushed out of the baffle cover 15 when the motor is in operation, the shaft lever 22 and the first spring column 24 are additionally arranged on the movable ring body 17, the elastic acting force of the first spring column 24 and the magnetic phase between the first annular magnet 18 and the second annular magnet 19 are in a balanced state, the baffle cover 15 can be pushed away by wind generated by the impeller 12 only to reach a very low requirement when the motor is not in operation, and the two driving points tend to be balanced after the motor is in the two driving points are reached, and the motor is convenient to use.
In this embodiment: oiling subassembly specifically includes: the oil injection cavity 27 arranged above the inner cavity 2 is provided with a telescopic groove 36 on the inner wall of the left cavity below the oil injection cavity 27, the inside of the telescopic groove 36 is movably connected with a telescopic rod 37, the bottom end of the telescopic rod 37 is embedded with a movable ball 43, the ball 43 is movably connected with an annular chute 25 arranged on the side face of the cover plate 11, a bump 26 is fixedly connected with the inside of the annular chute 25, the top end of the telescopic rod 37 is fixedly connected with a jacking rod 40, the top end of the jacking rod 40 penetrates through the top wall of the telescopic groove 36 to extend into the oil injection cavity 27 and is fixedly connected with a baffle 41, one side face of the baffle 41 is provided with a through hole 42, one side of the oil injection cavity 27 is provided with an oil guide cavity 30, a cavity 35 is arranged between the bottom end of the oil guide cavity 30 and the first bearing 9 and is communicated with the oil guide cavity 31, the side face of the baffle 41 is propped against one end opening of the oil guide cavity 31, and the oil guide cavity 31 and the through hole 42 are not in the same horizontal plane. The second bearing 8 near the output shaft 6 of the motor can be filled with lubricating oil only by detaching the dust cover 10 near the port, but the first bearing 9 inside the motor is positioned in the deep inside the motor, and the motor cannot be wholly detached by oiling each time, so the oil injection assembly can intermittently drain oil to the oil injection cavity 27 by utilizing the rotation of the cover plate 11 when the motor operates, the oil drain amount is very small each time, however, the longer the motor operates, the more the oil drain times, the larger the oil drain amount, and thus, a proper amount of oil can be discharged to the first bearing 9 according to the continuous operation time of the motor.
In this embodiment: a vertical hole 32 communicated with the outside atmosphere is formed above the oil guide cavity 30, a ball groove 33 is formed in the middle of the vertical hole 32, steel balls 34 are arranged in the ball groove 33, the steel balls 34 are propped against the vertical hole 32 on the bottom end face of the ball groove 33, the bottom end faces of the ball grooves 33 on two sides of the steel balls 34 are inclined, the bottom end faces of the ball grooves 33 are gradually increased from the middle to two sides, and an included angle between the bottom end faces of the ball grooves 33 and a horizontal plane is 5 degrees. Because permanent magnet synchronous servo motor is usually for the horizontal installation use, under this kind of installation condition, if lubrication is not in place between pivot 7 and the first bearing 9 of motor leads to the motor shake great time, the shake of motor can make the steel ball 34 in the pearl groove 33 roll back and forth, the perpendicular hole 32 of pearl groove 33 bottom end face is no longer blocked up to the steel ball 34, in-process, the perpendicular hole 32 intercommunication of pearl groove 33 upper and lower side, the lubricating oil that gets into oil guide chamber 30 can be more quick under the effect of oil body dead weight and atmospheric pressure along the chamber way 35 pour into in the first bearing 9 into to lubrication between messenger's pivot 7 and the first bearing 9 is quick in place, reduces the motor shake.
In this embodiment: the middle position of the outer side surface of the telescopic rod 37 is fixedly connected with a diaphragm 38, a second spring column 39 is fixedly connected between the diaphragm 38 and the inner wall of the left cavity, and the second spring column 39 is sleeved outside the telescopic rod 37. This arrangement enables the telescopic rod 37 to be quickly restored to its original position after the balls 43 of the telescopic rod 37 come into contact with the bumps 26 to cause the telescopic rod 37 to expand and contract, so that the balls 43 always abut against the inside of the annular chute 25.
In this embodiment: an oil filling port 28 is formed in the top end of the oil filling cavity 27, and a plug 29 is detachably connected to the inside of the oil filling port 28. The oil filling port 28 is used for filling lubricating oil into the oil filling cavity 27, and the plug 29 is used for plugging the oil filling port 28.
In this embodiment: a terminal 44 is fixedly connected to the top end surface side of the housing 1. The connector lug 44 is used to connect the motor to an external control power source.
In this embodiment: the end part of the output shaft 6 penetrates through the side wall of the right cavity and is embedded with a second bearing 8 between the side wall of the right cavity, and one side of the second bearing 8 is detachably connected with a dust cover 10. The dust cover 10 is used to prevent external dust from entering the second bearing 8 and damaging the second bearing 8.
The working principle of the invention is as follows: when the motor is used, firstly, the motor is arranged at a using position, when the motor is electrified and runs, the rotor 5 rotates to drive the impeller 12 to rotate and blow air outwards, and the blown air can push the baffle cover 15 in the circular groove 14 outwards, so that the baffle cover 15 does not block the ventilation opening 20 any more. During the process, the movable ring 17 in the annular groove 21 moves towards the direction of the ventilation opening 20, and the shaft lever 22 relatively displaces in the shaft hole 23 to improve the stability of the movement of the movable ring 17. And the heat generated by the motor operation is discharged to the outside atmosphere along with the air along the ventilation groove 13 and the ventilation opening 20, so that the heat dissipation speed is increased. When the motor is not in operation, the blocking cover 15 is pulled back into the circular groove 14 again through the magnetic repulsive force between the first annular magnet 18 and the second annular magnet 19 to block the ventilation opening 20, so that external dust is prevented from entering. In addition, in order to ensure that wind power generated by the impeller 12 can smoothly push out the blocking cover 15 when the motor operates, the shaft lever 22 and the first spring column 24 are additionally arranged on the movable ring body 17, when the motor does not operate, the first spring column 24 is in a compressed state, the elastic acting force of the first spring column 24 and the magnetic repulsive force between the first annular magnet 18 and the second annular magnet 19 are in a balanced state, the blocking cover 15 can be pushed open only by the wind power generated by the impeller 12 reaching low requirements, and after the motor stops, the two forces tend towards a balance point to drive the blocking cover 15 to return to the original position, so that the motor is convenient to use.
During operation of the motor, the cover plate 11 rotates along with the rotor 5, so that the balls 43 of the telescopic rod 37 relatively rotate in the annular chute 25, when the protruding points 26 in the annular chute 25 contact the balls 43, the protruding points 26 lift the balls 43 together with the telescopic rod 37 upwards, during the lifting of the lifting rod 40, the baffle 41 follows the lifting, when the through holes 42 in the baffle 41 are lifted to be aligned with the oil guide holes 31, lubricating oil in the oil injection cavity 27 flows into the oil guide cavity 30 from the through holes 42 and the oil guide holes 31, meanwhile, the second spring column 39 is compressed by the lifted diaphragm 38, and when the protruding points 26 are separated from the balls 43, the elastic force of the second spring column 39 lifts the balls 43 downwards to restore the original position. It should be noted that, this application through the oiling subassembly that sets up, can utilize the rotation drive oil filling chamber 27 intermittent type nature of apron 11 to oil filling chamber 27 when the motor operation, oil release volume is very little at every turn, but the longer the motor operation, the more the oil release number of times is also, and the oil release volume is also the bigger, just so can be according to the motor duration time give the first bearing 9 of appropriate oil release. After lubricating oil enters the oil guide cavity 30, the lubricating oil flows into the first bearing 9 from the cavity 35 to lubricate the first bearing 9, if the motor is horizontally installed and used, when the motor shakes greatly due to the fact that lubrication is not in place between the rotating shaft 7 of the motor and the first bearing 9, the shaking of the motor can enable the steel balls 34 in the ball grooves 33 to roll back and forth, the steel balls 34 do not always block the vertical holes 32 on the bottom end surfaces of the ball grooves 33, in the process, the vertical holes 32 on the upper and lower sides of the ball grooves 33 are communicated, and the lubricating oil entering the oil guide cavity 30 can be injected into the first bearing 9 along the cavity 35 more quickly under the action of the dead weight of the oil body and the atmospheric pressure, so that lubrication between the rotating shaft 7 and the first bearing 9 is in place quickly, the shaking of the motor is reduced, and the running stability of the motor is improved.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a low pressure heavy current inner rotor permanent magnet synchronous servo motor which characterized in that, includes casing (1), inner chamber (2) have been seted up to the inside of casing (1), and inner chamber (2) inside fixedly connected with division board (3), division board (3) divide into left cavity and right cavity with inner chamber (2), and right cavity inner wall fixedly connected with stator (4), inside swing joint of stator (4) has rotor (5), and the one end fixedly connected with output shaft (6) of rotor (5);
the other end fixedly connected with pivot (7) of rotor (5), and pivot (7) tip runs through division board (3) and extends to inside the left cavity, inlay between pivot (7) and division board (3) and be equipped with first bearing (9), and division board (3) side has seted up a plurality of evenly distributed's ventilation groove (13), fixedly connected with apron (11) on the lateral surface of left cavity internal rotation axle (7), and apron (11) a side fixedly connected with impeller (12), one side of impeller (12) is equipped with automatic switch ventilation cooling subassembly, the top of apron (11) is equipped with oiling subassembly.
2. The low-voltage high-current inner rotor permanent magnet synchronous servo motor according to claim 1, wherein the automatic switching ventilation and heat dissipation assembly specifically comprises: offer circular slot (14) in casing (1) a side, the inside swing joint of circular slot (14) has fender lid (15), and keeps off a plurality of optical axes (16) that become circular distribution of lid (15) a side border fixedly connected with, a plurality of optical axes (16) run through in circular slot (14) inner wall extends to left cavity and fixedly connected with removes ring body (17) jointly, and remove ring body (17) outer wall card annular groove (21) inside movable of seting up on left cavity inner wall, a side of removing ring body (17) is inlayed and is equipped with first ring magnet (18), the position that left cavity inner wall corresponds first ring magnet (18) has inlayed second ring magnet (19), and magnetic repulsion between first ring magnet (18) and the second ring magnet (19), set up on the inner wall of circular slot (14) a side a plurality of evenly distributed and with vent (20) of left cavity intercommunication.
3. The low-voltage high-current inner rotor permanent magnet synchronous servo motor according to claim 2, wherein an annular arc plate is fixedly connected to the outer wall of the movable ring body (17), and the annular arc plate is in contact with the inner wall of the annular groove (21).
4. The low-voltage high-current inner rotor permanent magnet synchronous servo motor according to claim 2, wherein a shaft lever (22) is fixedly connected to the other side face of the movable ring body (17) close to the edge, one end of the shaft lever (22) is movably connected to the inside of a shaft hole (23) formed in the inner wall of the annular groove (21), a first spring column (24) is sleeved on the outside of the shaft lever (22), and two ends of the first spring column (24) are fixedly connected with the movable ring body (17) and the inner wall of the annular groove (21) respectively.
5. The low-voltage high-current inner rotor permanent magnet synchronous servo motor according to claim 1, wherein the oiling assembly specifically comprises: set up oiling chamber (27) in inner chamber (2) top, set up flexible groove (36) on the left cavity inner wall of oiling chamber (27) below, and the inside swing joint of flexible groove (36) has telescopic link (37), the bottom of telescopic link (37) is inlayed and is equipped with mobilizable ball (43), and ball (43) swing joint is in annular spout (25) of seting up in apron (11) side, annular spout (25) inside fixedly connected with bump (26), the top fixedly connected with jacking rod (40) of telescopic link (37), and the top of jacking rod (40) runs through telescopic link (36) roof and extends to oiling chamber (27) inside and fixedly connected with baffle (41), through-hole (42) have been seted up to one side of baffle (41), oil guide chamber (30) have been seted up to one side of oiling chamber (27), and are equipped with cavity (35) intercommunication between oil guide chamber (30) bottom and first bearing (9), be equipped with oil guide hole (31) intercommunication between oil guide chamber (30) and oiling chamber (27), and opening (31) are in same one end (31) and are not supported on the horizontal plane (42).
6. The low-voltage high-current inner rotor permanent magnet synchronous servo motor according to claim 5, wherein a vertical hole (32) communicated with the outside atmosphere is formed above the oil guiding cavity (30), a ball groove (33) is formed in the middle of the vertical hole (32), steel balls (34) are arranged in the ball groove (33), the steel balls (34) are abutted against the vertical hole (32) on the bottom end face of the ball groove (33), the bottom ends of the ball grooves (33) on two sides of the steel balls (34) are inclined, the bottom end faces of the ball grooves (33) are gradually increased from the middle to two sides, and an included angle between the bottom end faces of the ball grooves (33) and a horizontal plane is 5 degrees.
7. The low-voltage high-current inner rotor permanent magnet synchronous servo motor according to claim 5, wherein a diaphragm (38) is fixedly connected to the middle position of the outer side face of the telescopic rod (37), a second spring column (39) is fixedly connected between the diaphragm (38) and the inner wall of the left chamber, and the second spring column (39) is sleeved outside the telescopic rod (37).
8. The low-voltage high-current inner rotor permanent magnet synchronous servo motor according to claim 5, wherein an oil filling port (28) is formed in the top end of the oil filling cavity (27), and a plug (29) is detachably connected to the inside of the oil filling port (28).
9. The low-voltage high-current inner rotor permanent magnet synchronous servo motor according to claim 1, wherein a connector lug (44) is fixedly connected to one side of the top end surface of the shell (1).
10. The low-voltage high-current inner rotor permanent magnet synchronous servo motor according to claim 1, wherein a second bearing (8) is embedded between the end part of the output shaft (6) and the side wall of the right chamber, and a dust cover (10) is detachably connected to one side of the second bearing (8).
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| CN202310370409.1A CN116365776B (en) | 2023-04-10 | 2023-04-10 | Low-voltage high-current inner rotor permanent magnet synchronous servo motor |
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| CN202310370409.1A CN116365776B (en) | 2023-04-10 | 2023-04-10 | Low-voltage high-current inner rotor permanent magnet synchronous servo motor |
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| CN116365776B CN116365776B (en) | 2024-03-19 |
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| CN116365776B (en) | 2024-03-19 |
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