CN112510916A

CN112510916A - Slot type tombarthite permanent magnet brushless motor

Info

Publication number: CN112510916A
Application number: CN202011368770.3A
Authority: CN
Inventors: 刘楷; 林有余; 吴玉华; 周国扬
Original assignee: Jiangsu Sumec Hardware and Tools Co Ltd
Current assignee: Jiangsu Sumec Hardware and Tools Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-03-16
Anticipated expiration: 2040-11-30
Also published as: CN112510916B

Abstract

The invention discloses a slot type rare earth permanent magnet brushless motor, which relates to the technical field of brushless motors, in particular to a slot type rare earth permanent magnet brushless motor. This slot type tombarthite permanent magnet brushless motor, drive the magnet rotor through a plurality of miniature electric telescopic rod of microcontroller control and remove, to magnet rotor and stator, the effective contact length of spiral is adjusted, thereby realize adjusting motor speed, the problem of frequently adjusting the current size in the past and leading to the motor to damage easily has been solved, the life of motor has been improved, mutually support through spacing snap ring and spacing bearing simultaneously and restrict miniature electric telescopic rod, stability when having guaranteed that the magnet rotor drives miniature electric telescopic rod and rotates.

Description

Slot type tombarthite permanent magnet brushless motor

Technical Field

The invention relates to the technical field of brushless motors, in particular to a slot type rare earth permanent magnet brushless motor.

Background

A permanent magnet brushless motor is a permanent magnet motor that is phase-commutated or current-controlled by an electronic circuit. The permanent magnet brushless motor has two types of sine wave drive and square wave drive; the permanent magnet motor, especially the rare earth permanent magnet motor, has simple structure and reliable operation compared with an electric excitation motor; the volume is small and the weight is light; the loss is small, and the efficiency is high; the shape and the size of the motor can be flexible and diversified, so that the motor has the remarkable advantages of wide application range and almost all the fields of aerospace, national defense, industry and agriculture, production and daily life.

The rotating speed of the motor needs to be frequently changed due to the change of the working environment and the working requirement when the motor works, the rotating speed of the motor is usually controlled by controlling the current by the controller of the existing permanent magnet brushless motor, the motor is easy to damage due to the frequent change of the current of the motor by the controller, when the motor is started at present, the larger current can generate larger impact on the motor, the probability of motor damage is increased, in addition, the prior motor is generally not provided with a monitoring device, the prior motor is generally directly controlled by a controller to be powered off, the rotor can still rotate for a long time due to inertia when the motor is directly powered off, and the damage to the motor is large when the motor is directly powered off, when the rotating speed of the motor is too high, an alarm cannot be given in time, and certain potential safety hazards exist.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a slot type rare earth permanent magnet brushless motor which has the advantages of being convenient for adjusting the rotating speed of the motor, monitoring the condition of the motor, prolonging the service life of the motor and the like, and solves the problems in the background technology.

In order to realize the purposes of regulating the rotating speed of the motor, conveniently monitoring the condition of the motor and prolonging the service life of the motor, the invention is realized by the following technical scheme: a slot type rare earth permanent magnet brushless motor comprises a motor shell, wherein a right side bearing support is fixedly arranged on the right side in the motor shell, a ball bearing is fixedly sleeved in the middle of the right side bearing support, a driving shaft is fixedly sleeved in the middle of the ball bearing, a stator is fixedly sleeved in the motor shell, a winding wire is wound in the stator, a limiting clamping plate is fixedly arranged on the outer portion of the driving shaft, a magnet rotor is clamped in the limiting clamping plate, a miniature electric telescopic rod is fixedly arranged at one end of the magnet rotor, a limiting bearing is fixedly sleeved in the outer portion of the miniature electric telescopic rod, a limiting clamping ring matched with the limiting bearing is fixedly sleeved on the outer portion of the motor shell, a conductive head is fixedly arranged at the top end of the miniature electric telescopic rod, and two wire connecting rings matched with the miniature electric telescopic rod are arranged on the outer portion of the, the utility model discloses a motor casing, including motor casing, wiring ring, motor casing's inside fixed mounting has the right retainer plate that is located left retainer plate side, the equal fixed mounting in inside of left side retainer plate and right retainer plate has the electrically conductive sliding ring of mutually supporting with the wiring ring, the inside left side fixed mounting of motor casing has left side bearing, and the middle part fixed mounting of left side bearing has ball bearing, motor casing's inside fixed mounting has the PCB control panel, motor casing's left side fixed mounting has sealed back lid, motor casing's right side fixed mounting has speed sensor, motor casing's top fixed mounting has the motor terminal box, motor casing's top fixed mounting has microcontroller.

Preferably, the limiting clamping plate is located inside the stator, the cross section of the limiting clamping plate is in a T shape, and the limiting clamping plate is uniformly distributed on the outer side of the driving shaft.

Preferably, the inside of spacing snap ring is seted up the spacing groove of mutually supporting with spacing bearing, the middle part of spacing snap ring is seted up the through hole of mutually supporting with the drive shaft.

Preferably, the conductive slip rings inside the left fixing ring and the right fixing ring are respectively connected with two wire connecting rings outside the conductive head, the two conductive slip rings are electrically connected with the microcontroller, and the microcontroller is electrically connected with the micro electric telescopic rod.

Preferably, revolution speed sensor is located the outside of drive shaft, and revolution speed sensor and drive shaft swing joint, revolution speed sensor and microcontroller electric connection, motor housing's top fixed mounting has the alarm, and alarm and microcontroller electric connection.

Preferably, the PCB control panel is located the left side of left side bearing support, left side bearing support is located the left side of left retainer plate and right retainer plate, the annular channel that link up is seted up to the side of left side bearing support.

Preferably, the magnet rotor is located inside the stator and the winding wire, and the length value of the magnet rotor is the same as that of the stator.

The invention provides a slot type rare earth permanent magnet brushless motor, which has the following beneficial effects:

1. this slot type tombarthite permanent magnet brushless motor, drive the magnet rotor through a plurality of miniature electric telescopic rod of microcontroller control and remove, to magnet rotor and stator, the effective contact length of spiral is adjusted, thereby realize adjusting motor speed, the problem of frequently adjusting the current size in the past and leading to the motor to damage easily has been solved, the life of motor has been improved, the while is mutually supported through spacing snap ring and spacing bearing and is restricted miniature electric telescopic rod, stability when having guaranteed that the magnet rotor drives miniature electric telescopic rod and rotates, in addition, cooperate with the wiring ring that the conductive head outside was seted up through the inside conductive slip ring of left retainer plate and right retainer plate, guarantee miniature electric telescopic rod's normal circular telegram, guarantee that miniature controller can control miniature electric telescopic rod.

2. This slot type tombarthite permanent magnet brushless motor, the during operation monitors the pivot speed of drive shaft through speed sensor to with monitoring data transmission to microcontroller handles, when the pivot speed was too fast, microcontroller sent the signal to the alarm and sent the police dispatch newspaper through the alarm, be convenient for in time handle when the motor exceeds speed, prevented that the motor from speeding for a long time and rotating the damage.

3. This slot type tombarthite permanent magnet brushless motor, during the start, drive the magnet rotor through a plurality of miniature electronic telescopic link of microcontroller control and remove, to magnet rotor and stator, the effective contact length of spiral is controlled, thereby improve the rotational speed of drive shaft gradually, realize the soft start to the motor, the too big impact that causes the motor of electric current when reducing the start, prevent the motor damage, when shutting down simultaneously, to magnet rotor and stator, the effective contact length of spiral is controlled, auxiliary motor shuts down, the harm of direct outage to the motor has been reduced, the life of motor has further been improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the interior of the motor housing of the present invention;

FIG. 3 is a schematic view of the exterior of the drive shaft of the present invention;

FIG. 4 is a schematic view of the internal structure of the spacing splint according to the present invention;

FIG. 5 is a schematic structural view of the top end of the miniature electric telescopic rod of the present invention;

FIG. 6 is a schematic structural view of a retainer ring according to the present invention;

fig. 7 is a schematic structural view of explosion of internal components of the motor housing according to the present invention.

In the figure: 1. a motor housing; 2. a right bearing support; 3. a ball bearing; 4. a drive shaft; 5. a stator; 6. a limiting clamp plate; 7. a magnet rotor; 8. a miniature electric telescopic rod; 9. a limit snap ring; 10. a left retainer ring; 11. a right stationary ring; 12. a conductive slip ring; 13. coiling; 14. a PCB control board; 15. a left side bearing support; 16. a limit bearing; 17. a conductive head; 18. a rotational speed sensor; 19. a motor junction box; 20. a microcontroller; 21. an alarm; 22. and sealing the rear cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 7, the present invention provides a technical solution: a slot type rare earth permanent magnet brushless motor comprises a motor shell 1, a right bearing support 2 is fixedly arranged on the right side inside the motor shell 1, a ball bearing 3 is fixedly sleeved in the middle of the right bearing support 2, a driving shaft 4 is fixedly sleeved in the middle of the ball bearing 3, a stator 5 is fixedly sleeved in the motor shell 1, a winding 13 is wound in the stator 5, a limiting clamp plate 6 is fixedly arranged outside the driving shaft 4, a magnet rotor 7 is clamped in the limiting clamp plate 6, the limiting clamp plate 6 is positioned in the stator 5, the cross section of the limiting clamp plate 6 is in a T shape, the limiting clamp plate 6 is uniformly distributed on the outer side of the driving shaft 4, the magnet rotor 7 is limited by the limiting clamp plate 6, the stability of the magnet rotor 7 during moving is ensured, the normal operation of the device is ensured, and the probability of damage of the device is reduced, the micro controller 20 controls the micro electric telescopic rods 8 to drive the magnet rotor 7 to move, and the effective contact length of the magnet rotor 7 with the stator 5 and the winding 13 is adjusted, so that the rotating speed of the motor is adjusted, the problem that the motor is easily damaged due to frequent adjustment of current is solved, the service life of the motor is prolonged, the magnet rotor 7 is positioned inside the stator 5 and the winding 13, the length value of the magnet rotor 7 is the same as that of the stator 5, when the motor is stopped, the effective contact length of the magnet rotor 7 with the stator 5 and the winding 13 is controlled, the motor is assisted to be stopped, the damage of direct power-off to the motor is reduced, the service life of the motor is further prolonged, the micro electric telescopic rods 8 are fixedly installed at one end of the magnet rotor 7, and the limit bearings 16 are fixedly sleeved outside the micro electric telescopic rods 8, a limiting snap ring 9 mutually matched with a limiting bearing 16 is fixedly sleeved outside the motor shell 1, a limiting groove mutually matched with the limiting bearing 16 is formed inside the limiting snap ring 9, a through hole mutually matched with the driving shaft 4 is formed in the middle of the limiting snap ring 9, the micro electric telescopic rod 8 is limited by mutually matching the limiting snap ring 9 and the limiting bearing 16, the stability of the micro electric telescopic rod 8 driven by the magnet rotor 7 when rotating is ensured, a conductive head 17 is fixedly installed at the top end of the micro electric telescopic rod 8, two wiring rings mutually matched with the micro electric telescopic rod 8 are formed outside the conductive head 17, a left fixing ring 10 is fixedly installed inside the motor shell 1, a right fixing ring 11 positioned on the side surface of the left fixing ring 10 is fixedly installed inside the motor shell 1, and a conductive slip ring 12 mutually matched with the wiring rings is fixedly installed inside the left fixing ring 10 and the right fixing ring 11, a left bearing support 15 is fixedly arranged on the left side inside the motor shell 1, a ball bearing 3 is fixedly sleeved in the middle of the left bearing support 15, conductive slip rings 12 inside a left fixing ring 10 and a right fixing ring 11 are respectively connected with two wire connecting rings outside a conductive head 17, the two conductive slip rings 12 are both electrically connected with a microcontroller 20, the microcontroller 20 is electrically connected with a micro electric telescopic rod 8, the conductive slip rings 12 inside the left fixing ring 10 and the right fixing ring 11 are mutually matched with the wire connecting rings arranged outside the conductive head 17 to ensure the normal power-on of the micro electric telescopic rod 8, the micro controller 20 can control the micro electric telescopic rod 8, a PCB control board 14 is fixedly arranged inside the motor shell 1, a sealed rear cover 22 is fixedly arranged on the left side of the motor shell 1, and a rotating speed sensor 18 is fixedly arranged on the right side of the motor shell 1, a motor junction box 19 is fixedly installed at the top of the motor shell 1, a microcontroller 20 is fixedly installed at the top of the motor shell 1, a rotation speed sensor 18 is positioned outside a driving shaft 4, the rotation speed sensor 18 is movably connected with the driving shaft 4, the rotation speed sensor 18 is electrically connected with the microcontroller 20, an alarm 21 is fixedly installed at the top of the motor shell 1, the alarm 21 is electrically connected with the microcontroller 20, the rotation speed of the driving shaft 4 is monitored through the rotation speed sensor 18, monitoring data is transmitted to the microcontroller 20 to be processed, when the rotation speed of the driving shaft 4 is too high, the microcontroller 20 sends a signal to the alarm 21 and sends an alarm through the alarm 21, the processing is facilitated when the motor is overspeed, the motor is prevented from being damaged due to long-time overspeed rotation, the PCB control panel 14 is positioned at the left side of the left side bearing support 15, the left side bearing support 15 is positioned at the left side of the, the link-up ring channel has been seted up to the side of left side bearing support 15, send electrical signal to PCB control panel 14 through motor terminal box 19, and the hall sensor control spiral 13 that takes certainly through PCB control panel 14 circular telegram, and control a plurality of miniature electric telescopic handle 8 through microcontroller 20 and drive magnet rotor 7 and remove, to magnet rotor 7 and stator 5, the effective contact length of spiral 13 controls, thereby improve the rotational speed of drive shaft 4 gradually, realize the soft start to the motor, the too big impact that causes the motor of electric current when reducing the start, prevent that the motor from damaging.

In conclusion, when the slot type rare earth permanent magnet brushless motor is used, an electric signal is sent to the PCB control board 14 through the motor junction box 19, the power on of the winding 13 is controlled through the Hall sensor carried by the PCB control board 14, the micro controller 20 controls the micro electric telescopic rods 8 to drive the magnet rotor 7 to move, the effective contact length of the magnet rotor 7 with the stator 5 and the winding 13 is controlled, so that the rotating speed of the driving shaft 4 is gradually increased, the soft start of the motor is realized, when the rotating speed of the motor needs to be adjusted, the micro electric telescopic rods 8 are controlled by the micro controller 20 to drive the magnet rotor 7 to move, the effective contact length of the magnet rotor 7 with the stator 5 and the winding 13 is adjusted, the rotating speed of the driving shaft 4 is adjusted, and meanwhile, the micro electric telescopic rods 8 are limited through the mutual matching of the limit snap ring 9 and the limit bearing 16, make magnet rotor 7 drive miniature electric telescopic handle 8 and keep stable when rotating, the wiring ring that sets up through left retainer plate 10 and the inside conductive slip ring 12 of right retainer plate 11 and conductive head 17 outside is mutually supported, make miniature electric telescopic handle 8 can normally circular telegram, in addition at motor during operation, monitor drive shaft 4 rotational speed through speed sensor 18, and handle monitoring data transmission to microcontroller 20, when drive shaft 4 rotational speed is too fast, microcontroller 20 sends out the signal to alarm 21 and sends out the police dispatch newspaper through alarm 21, when the motor shuts down, control a plurality of miniature electric telescopic handle 8 through microcontroller 20 and drive magnet rotor 7 and remove, to magnet rotor 7 and stator 5, the effective contact length of spiral 13 is controlled, thereby control drive shaft 4 rotational speed, auxiliary motor shuts down, can.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a slot type tombarthite permanent magnet brushless motor, includes motor housing (1), its characterized in that: the motor comprises a motor shell (1), a right bearing support (2) is fixedly arranged on the right side in the motor shell (1), a ball bearing (3) is fixedly sleeved in the middle of the right bearing support (2), a driving shaft (4) is fixedly sleeved in the middle of the ball bearing (3), a stator (5) is fixedly sleeved in the motor shell (1), a winding wire (13) is wound in the stator (5), a limiting clamping plate (6) is fixedly arranged on the outer portion of the driving shaft (4), a magnet rotor (7) is clamped in the limiting clamping plate (6), a miniature electric telescopic rod (8) is fixedly arranged at one end of the magnet rotor (7), a limiting bearing (16) is fixedly sleeved in the outer portion of the miniature electric telescopic rod (8), a limiting clamping ring (9) matched with the limiting bearing (16) is fixedly sleeved in the outer portion of the motor shell (1), the top end of the miniature electric telescopic rod (8) is fixedly provided with a conductive head (17), two wiring rings matched with the miniature electric telescopic rod (8) are arranged outside the conductive head (17), a left fixing ring (10) is fixedly arranged inside the motor shell (1), a right fixing ring (11) positioned on the side surface of the left fixing ring (10) is fixedly arranged inside the motor shell (1), conductive slip rings (12) matched with the wiring rings are fixedly arranged inside the left fixing ring (10) and the right fixing ring (11), a left bearing support (15) is fixedly arranged on the left side inside the motor shell (1), a ball bearing (3) is fixedly sleeved in the middle of the left bearing support (15), a PCB control board (14) is fixedly arranged inside the motor shell (1), and a sealed rear cover (22) is fixedly arranged on the left side of the motor shell (1), the motor is characterized in that a rotating speed sensor (18) is fixedly mounted on the right side of the motor shell (1), a motor junction box (19) is fixedly mounted on the top of the motor shell (1), and a microcontroller (20) is fixedly mounted on the top of the motor shell (1).

2. The slot-type rare earth permanent magnet brushless motor according to claim 1, characterized in that: spacing splint (6) are located the inside of stator (5), the cross sectional shape of spacing splint (6) is "T" font, spacing splint (6) evenly distributed is in the outside of drive shaft (4).

3. The slot-type rare earth permanent magnet brushless motor according to claim 1, characterized in that: the limiting groove matched with the limiting bearing (16) is formed in the limiting clamping ring (9), and the through hole matched with the driving shaft (4) is formed in the middle of the limiting clamping ring (9).

4. The slot-type rare earth permanent magnet brushless motor according to claim 1, characterized in that: the conductive slip rings (12) in the left fixing ring (10) and the right fixing ring (11) are respectively connected with two wire connecting rings outside the conductive head (17), the two conductive slip rings (12) are electrically connected with the microcontroller (20), and the microcontroller (20) is electrically connected with the micro electric telescopic rod (8).

5. The slot-type rare earth permanent magnet brushless motor according to claim 1, characterized in that: revolution speed sensor (18) are located the outside of drive shaft (4), and revolution speed sensor (18) and drive shaft (4) swing joint, revolution speed sensor (18) and microcontroller (20) electric connection, the top fixed mounting of motor housing (1) has alarm (21), and alarm (21) and microcontroller (20) electric connection.

6. The slot-type rare earth permanent magnet brushless motor according to claim 1, characterized in that: PCB control panel (14) are located the left side of left side bearing support (15), left side bearing support (15) are located the left side of left retainer plate (10) and right retainer plate (11), the link-up ring channel has been seted up to the side of left side bearing support (15).

7. The slot-type rare earth permanent magnet brushless motor according to claim 1, characterized in that: the magnet rotor (7) is positioned inside the stator (5) and the winding (13), and the length value of the magnet rotor (7) is the same as that of the stator (5).