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CN-121530121-B - Electric roller motor with coaxial magnetic gear

CN121530121BCN 121530121 BCN121530121 BCN 121530121BCN-121530121-B

Abstract

The invention provides an electric roller motor with coaxial magnetic gears. The electric roller motor with the coaxial magnetic gear comprises a roller, a shaft core, a driving piece, two inner magnetic poles, two magnetic pole adjusting pieces and an outer magnetic pole, wherein the roller is rotatably arranged outside the shaft core, the driving piece is fixedly arranged outside the shaft core and is positioned inside the roller, the two inner magnetic poles are fixedly arranged outside the driving piece, the two magnetic pole adjusting pieces are arranged and are fixedly connected to the shaft core, the driving piece and the inner magnetic pole are positioned inside the two magnetic pole adjusting pieces, and the outer magnetic pole is fixedly arranged on the inner side of the roller and is positioned on the outer side of the magnetic pole adjusting piece. The electric roller motor with the coaxial magnetic gear adopts coaxial magnetic gear transmission, realizes power transmission through magnetic field coupling among the inner magnetic pole, the magnetic regulating pole and the outer magnetic pole, avoids friction and impact when the traditional mechanical gears are meshed, fundamentally reduces noise generation, and remarkably prolongs the whole service life of the electric roller motor.

Inventors

  • LI XINGLONG
  • JIN JUN
  • YAO GUOPING
  • HE HAO
  • ZHAO WEIJIE

Assignees

  • 杭州英吉士电机有限公司

Dates

Publication Date
20260505
Application Date
20260114

Claims (6)

  1. 1. An electric roller motor with a coaxial magnetic gear comprises a roller (20) and is characterized by also comprising a shaft core (10), wherein the roller (20) is rotatably arranged outside the shaft core (10); The driving piece (30) is fixedly arranged outside the shaft core (10) and positioned inside the roller (20), and two inner magnetic poles (40) are fixedly arranged outside the driving piece (30); The two magnetic regulating poles (50) are arranged and fixedly connected to the shaft core (10), and the driving piece (30) and the inner magnetic pole (40) are positioned inside the two magnetic regulating poles (50); an outer magnetic pole (60) fixedly installed on the inner side of the drum (20) and positioned on the outer side of the magnetic regulating pole (50); The driving piece (30) can drive the driving piece (30) and the inner magnetic pole (40) fixedly connected with the driving piece to rotate relative to the shaft core (10), and a modulated magnetic field of the modulated magnetic pole (50) is coupled with a magnetic field of the outer magnetic pole (60) in the rotation process of the inner magnetic pole (40) and converts high-rotation-speed and low-torque rotation of the inner magnetic pole (40) into low-rotation-speed and high-torque rotation of the roller (20); The outside of the shaft core (10) is provided with a plurality of clamping grooves (101), one end of the shaft core (10) is also provided with a wire groove (102), both ends of the shaft core (10) are fixedly connected with limiting rods (103), the inside of the limiting rod (103) which is close to one end of the shaft core (10) and provided with the wire groove (102) is also provided with the wire groove (102), the limiting rod (103) which is positioned at one end of the shaft core (10) and provided with the wire groove (102) is also connected with a clamping bolt (11) in a threaded manner, the clamping bolt (11) is provided with a wire hole (111), and the wire groove (102) is communicated with the wire hole (111); The driving piece (30) comprises a fixed cylinder (301), a stator coil (302), a Hall plate (303), end plates (304) and magnetic steels (305), wherein the fixed cylinder (301) is fixedly connected to a shaft core (10), the stator coil (302) is fixedly connected and is annularly arrayed outside the fixed cylinder (301), the Hall plate (303) is arranged at one end, close to a wire slot (102), of the fixed cylinder (301), the magnetic steels (305) are arranged outside the stator coil (302) in a plurality of annular arrays, and positive and negative magnetic poles of adjacent magnetic steels (305) are alternately arranged; the outside of driving piece (30) is provided with separates magnetism cover (31), and magnet steel (305) fixed mounting is in separating magnetism cover (31) inside, and the both ends that separate magnetism cover (31) are provided with end plate (304), and all fixedly connected with bearing two (32) on two end plates (304), the interior axle sleeve fixed connection of bearing two (32) is on axle core (10).
  2. 2. An electric drum motor with coaxial magnetic gear according to claim 1, characterized in that the inner pole (40) and the outer pole (60) are axisymmetric with respect to each other with the radial cross section of the middle part of the driving member (30).
  3. 3. An electric drum motor with coaxial magnetic gear according to claim 1, characterized in that the inner sides of the two ends of the drum (20) are provided with a first bearing (21), the inner sleeve of the first bearing (21) is fixedly connected to the outside of the shaft core (10), and the drum (20) is rotatably mounted on the shaft core (10) through the first bearing (21).
  4. 4. The electric roller motor with the coaxial magnetic gear according to claim 1, wherein the inner magnetic pole (40) comprises an inner roller body (401), an inner permanent magnet (402) and a first mounting groove (403), the inner roller body (401) is fixedly connected to the outside of the magnetism isolating sleeve (31), a plurality of first mounting grooves (403) matched with the inner permanent magnet (402) are formed in the outer side of the inner roller body (401), the first mounting grooves (403) are arranged in an annular array along the axial direction of the inner roller body (401), and the inner permanent magnet (402) is located in the first mounting grooves (403).
  5. 5. The electric drum motor with the coaxial magnetic gear according to claim 1, wherein the magnetic modulation poles (50) comprise a mounting cylinder (501), modulation bodies (502) and a connecting seat (503), the connecting seat (503) is fixedly connected to the mounting cylinder (501), the mounting cylinder (501) is fixedly connected to the shaft core (10) through the connecting seat (503), a plurality of modulation bodies (502) are fixedly arranged inside the mounting cylinder (501), the modulation bodies (502) are arranged in an annular array along the axial direction of the mounting cylinder (501), a bearing three (51) is arranged between the two magnetic modulation poles (50), and an inner shaft sleeve of the bearing three (51) is fixedly connected to the magnetic isolation sleeve (31).
  6. 6. The electric roller motor with the coaxial magnetic gear according to claim 1, wherein the outer magnetic pole (60) comprises an outer roller body (601) and an outer permanent magnet (602), a plurality of second mounting grooves (6011) which are arranged along the annular array of the outer roller body (601) are formed in the inner wall of the outer roller body (601), the outer permanent magnet (602) is arranged in the second mounting grooves (6011), and a plurality of clamping ribs (6012) which are matched with the inner wall of the roller (20) are fixedly connected to the outer portion of the outer roller body (601).

Description

Electric roller motor with coaxial magnetic gear Technical Field The invention relates to the technical field of electric roller motors, in particular to an electric roller motor with coaxial magnetic gears. Background In a security inspection system of a high-speed railway station, a roller motor is used as a core power component for driving a security inspection conveyor belt to operate, the operation performance of the roller motor directly influences the efficiency and stability of a security inspection process, and at present, the roller motor is applied to a security inspection instrument of the high-speed railway station and generally adopts a design scheme of a built-in planetary gear transmission mechanism. The core principle of the design is that the high-speed rotation motion of the motor output shaft is converted into low-speed and high-torque output required by the roller through the multistage deceleration action of the planetary gear set, so that the requirements of the security inspection conveyor belt on the bearing capacity and the running stability are met. However, the traditional structure based on planetary gear transmission gradually exposes some drawbacks which are difficult to avoid in long-term practical application, in terms of noise level, the meshing and friction among gears inevitably generate larger noise in the high-speed running and torque transmission process of the planetary gears, so that normal traveling experience of passengers can be disturbed, on the equipment service life, due to the fact that the planetary gears are in the high-load meshing and friction state for a long time, the phenomena of abrasion, fatigue peeling and the like are extremely easy to occur on the surfaces of the gears, the phenomena of increasing equipment maintenance frequency, increasing maintenance cost and the like can be caused, the whole service life of a roller motor is more seriously influenced, and then frequent faults of a security inspection instrument in the running process can be caused to influence the continuity and the high efficiency of security inspection work. Accordingly, there is a need to provide an electric drum motor with coaxial magnetic gears that solves the above-mentioned technical problems. Disclosure of Invention The present invention provides an electric drum motor with coaxial magnetic gears that solves the problems set forth in the background art described above. In order to solve the technical problems, the invention provides an electric roller motor with a coaxial magnetic gear, which comprises a roller, a shaft core and a motor, wherein the roller is rotatably arranged outside the shaft core; the driving piece is fixedly arranged outside the shaft core and positioned inside the roller, and two inner magnetic poles are fixedly arranged outside the driving piece; the magnetic pole adjusting device comprises two magnetic pole adjusting devices, a driving piece and an inner magnetic pole, wherein the two magnetic pole adjusting devices are fixedly connected to a shaft core; the outer magnetic pole is fixedly arranged on the inner side of the roller and is positioned on the outer side of the magnetic regulating pole; The driving piece can drive the driving piece and an inner magnetic pole fixedly connected with the driving piece to rotate relative to the shaft core, a modulation magnetic field of the modulated magnetic pole can be coupled with a magnetic field of an outer magnetic pole in the rotation process of the inner magnetic pole, and the high-rotation-speed low-torque rotation of the inner magnetic pole is converted into the low-rotation-speed high-torque rotation of the roller. Preferably, the inner magnetic pole and the outer magnetic pole are symmetrical with each other by taking the radial section of the middle part of the driving piece as an axis. Preferably, the outside of axle core has seted up a plurality of draw-in grooves, and the wire casing has still been seted up to the one end of axle core, and the equal fixedly connected with gag lever post in both ends of axle core, and the wire casing has also been seted up to the gag lever post inside that is close to axle core and sets up wire casing one end, still threaded connection has the clip on the gag lever post that is located axle core and sets up wire casing one end, has seted up wired hole on the clip, and the wire casing is linked together with wired hole. Preferably, the inner sides of the two ends of the roller are respectively provided with a first bearing, an inner shaft sleeve of the first bearing is fixedly connected to the outside of the shaft core, and the roller is rotatably arranged on the shaft core through the bearings. Preferably, the driving piece comprises a fixed cylinder, a stator coil, a Hall plate, end plates and magnetic steels, wherein the fixed cylinder is fixedly connected to the shaft core, the stator coil is fixedly connected with the outer side of the fixed cylinder in a