CN219843492U - Small-size marine permanent magnetism propulsion motor - Google Patents

Abstract

The utility model discloses a small-sized marine permanent magnet propulsion motor, which aims to provide a small-sized marine permanent magnet propulsion motor capable of effectively improving comfort.

Description

Small-size marine permanent magnetism propulsion motor

Technical Field

The utility model relates to the field of propulsion equipment, in particular to a small-sized marine permanent magnet propulsion motor.

Background

Permanent magnet stepper motors, also called PM stepper motors. The rotor adopts permanent magnet steel. The stator of the stepping motor is processed into claw-shaped tooth poles in a stamping mode, and the rotor adopts radial multipolar magnetized permanent magnet steel. The motor is low in cost. Principle of: the magnetic field generated by the coil current direction is mutually repelled with the rotor magnetic field, so that the motor rotates positively/negatively. The permanent magnet stepping motor is divided into 2 phases and 4 phases, the torque and the volume are smaller, and the stepping angle comprises the following steps: 5.625 °/7.5 °/11.25 °/15 °, the motor having two parts, rotor and stator: the stator is a coil, and the rotor is a permanent magnet; the stator may be a permanent magnet, and the rotor may be a coil.

At present, china patent with publication number CN103746530B discloses a ship propulsion vertical permanent magnet motor, which comprises a base, a front end cover, a rear end cover, a stator structure, a rotor structure, a three-bearing structure and an air cooling structure; the rotor structure comprises a rotating shaft, an inner sealing ring, a fan, a round nut, a first rotor pressing ring, a rotor iron core, a second rotor pressing ring and a balance disc; n external teeth are arranged on the outer side surface of the first rotor pressing ring and the outer side surface of the second rotor pressing ring at equal intervals along the circumferential direction; n groups of magnetic steel grooves are formed in the outer ring of the end face of the rotor core at equal intervals along the circumferential direction; each group of magnetic steel grooves consists of four magnetic steel grooves which are symmetrically distributed in a U shape. The utility model is suitable for a ship propulsion system.

The ship propulsion vertical permanent magnet motor solves the problems that the existing permanent magnet motor is low in operation reliability, limited in capacity expansion, low in air gap magnetic density, low in power density, low in structural strength, difficult to meet operation requirements and difficult to adapt to the inclined operation working condition of a ship propulsion system, but with the continuous enhancement of environmental awareness of all countries around the world, the requirement on clean energy is increasingly increased, and a small ship propeller is continuously converted into an electric state by a traditional internal combustion engine. Because the traditional internal combustion engine has low energy conversion efficiency, large noise and vibration, large volume, large environmental pollution caused by emissions and poor ship comfort.

Disclosure of Invention

The utility model aims to provide a small-sized marine permanent magnet propulsion motor which has the advantages of effectively reducing the temperature in the operation process, ensuring stable operation, simultaneously having smaller volume of the whole equipment and effectively reducing noise.

The technical aim of the utility model is realized by the following technical scheme:

the utility model provides a small-size marine permanent magnetism propulsion motor, includes the casing, still be equipped with the stator assembly on the casing, the stator assembly includes the stator of being connected with the casing and is located the casing top and be equipped with the cable conductor with the stator intercommunication, still be equipped with the rotor assembly in the casing, the rotor assembly is including the rotor core that is located the stator, be located the permanent magnet that is equipped with in the rotor core and be located the inside motor shaft that is equipped with of rotor core.

Further set up: one end of the motor shaft, which is far away from the cable, is also provided with a pushing bearing.

Further set up: the casing is close to pushing bearing one side still is equipped with the front end housing, the casing opposite side still is equipped with the rear end cap.

Further set up: the stator adopts interference fit to install in the casing, the casing has the water-cooling passageway, casing one side is equipped with the inlet tube of being connected with the water-cooling passageway, inlet tube one side still is equipped with the outlet pipe.

Further set up: the top end of the rear end cover is also provided with an encoder connected with a motor shaft.

Further set up: and the front end cover and the rear end cover are also sleeved with buffer sleeves.

In summary, the utility model has the following beneficial effects: the power mode of the small marine internal combustion engine is changed, and the marine propulsion motor is different from the marine propulsion motor with other structures. By adopting the thrust bearing, the motor can effectively bear the impact force of water flow on the propeller in the operation of the ship, and can simultaneously bear axial and radial impact; the permanent magnet motor adopts a water cooling mode, so that the power density of the motor can be effectively improved, and the light weight of a product is realized; the motor front end cover and the rear end cover are provided with buffer structures which are arranged on the ship, so that the vibration and the noise of the motor and the ship body are reduced; the comfort of ship operation is improved.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of the overall structure of a small-sized marine permanent magnet propulsion motor;

fig. 2 is a schematic cross-sectional view of a small-sized marine permanent magnet propulsion motor for realistic internal structure.

In the figure, 1, a shell; 2. a stator assembly; 21. a stator; 22. a cable; 3. a rotor assembly; 31. a rotor core; 32. a permanent magnet; 33. a motor shaft; 4. pushing the bearing; 5. a front end cover; 6. a rear end cover; 7. a water cooling channel; 8. a water inlet pipe; 9. a water outlet pipe; 10. an encoder; 11. and a buffer sleeve.

Detailed Description

The following describes the embodiments of the present utility model further with reference to the drawings.

The technical scheme adopted by the utility model is as follows: the utility model provides a small-size marine permanent magnetism propulsion motor, as shown in fig. 1 and 2, including casing 1, still be equipped with stator 21 assembly 2 on the casing 1, stator 21 assembly 2 includes the stator 21 of being connected with casing 1 and be located the casing 1 top and be equipped with the cable conductor 22 with stator 21 intercommunication, still be equipped with rotor assembly 3 in the casing 1, rotor assembly 3 includes the rotor core 31 that is located stator 21, be equipped with permanent magnet 32 in rotor core 31, the motor shaft 33 that rotor core 31 is inside is equipped with simultaneously, the one end that the motor shaft 33 kept away from cable conductor 22 still is equipped with thrust bearing 4, casing 1 is close to thrust bearing 4 one side still is equipped with front end housing 5, casing 1 opposite side still is equipped with rear end cap 6, the stator 21 adopts interference fit to install in casing 1, and casing 1 has water cooling channel 7, be used for the stator 21 cooling, casing 1 one side is equipped with the inlet tube 8 of being connected with water cooling channel 7, inlet tube 8 one side still is equipped with outlet pipe 9, rear end cap 6 top still is equipped with the encoder 10 of being connected with motor shaft 33, still overlap on front end housing 5 and rear end cap 6 is equipped with buffer sleeve 11.

The main working principle is as follows: the whole equipment comprises a stator 21, a shell 1 and a power line, wherein a stator 21 assembly 2 is formed, a water cooling channel 7 is arranged in the middle of the shell 1, cooling water can circulate from the middle to form an annular loop, a rotor iron core 31, a permanent magnet, a rotor pressing plate, a motor shaft 33, a thrust bearing, a round nut, a magnetic encoder 10 and other components form a rotor assembly 3, a rear end cover 6 and a front end cover 5 are respectively provided with two buffer structures, a buffer sleeve 11 is arranged, the rotor rotates and adopts the thrust bearing as a support, the bidirectional axial force can be borne, the rear end cover 6 and the front end cover 5 are respectively provided with two buffer structures, the buffer sleeves 11 are arranged, the structures buffer the vibration of a motor and a rear end load, absorb the vibration and the noise of ship operation, the magnetic encoder 10 is arranged on the rear end cover 6, the motor shaft 33 end is arranged on a detection magnetic steel, and when the motor rotates, the magnetic encoder 10 can transmit a real-time position feedback signal to a controller, and the precision is high, and the structure is simple.

The foregoing is a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any simple modification, equivalent variation and variation of the above embodiment according to the technical substance of the present utility model falls within the scope of the technical solution of the present utility model.

Claims (6)

1. The utility model provides a small-size marine permanent magnetism propulsion motor, includes casing (1), its characterized in that: the motor is characterized in that a stator (21) assembly (2) is further arranged on the machine shell (1), the stator (21) assembly (2) comprises a stator (21) connected with the machine shell (1) and a cable (22) communicated with the stator (21) is arranged at the top end of the machine shell (1), a rotor assembly (3) is further arranged in the machine shell (1), and the rotor assembly (3) comprises a rotor core (31) arranged in the stator (21), a permanent magnet (32) arranged in the rotor core (31) and a motor shaft (33) arranged in the rotor core (31).

2. A small-sized marine permanent magnet propulsion motor according to claim 1, wherein: one end of the motor shaft (33) far away from the cable wire (22) is also provided with a pushing bearing (4).

3. A small-sized marine permanent magnet propulsion motor according to claim 2, wherein: the front end cover (5) is further arranged on one side, close to the pushing bearing (4), of the machine shell (1), and the rear end cover (6) is further arranged on the other side of the machine shell (1).

4. A small-sized marine permanent magnet propulsion motor according to claim 3, wherein: the stator (21) is arranged in the casing (1) in an interference fit mode, the casing (1) is provided with a water cooling channel (7), one side of the casing (1) is provided with a water inlet pipe (8) connected with the water cooling channel (7), and one side of the water inlet pipe (8) is also provided with a water outlet pipe (9).

5. The small-sized marine permanent magnet propulsion motor according to claim 4, wherein: the top end of the rear end cover (6) is also provided with an encoder (10) connected with a motor shaft (33).

6. The small-sized marine permanent magnet propulsion motor according to claim 5, wherein: the front end cover (5) and the rear end cover (6) are also sleeved with a buffer sleeve (11).