CN221202299U - Balance structure of adjustable heat and tempering mandrel system of marine low-vibration-noise motor - Google Patents

Abstract

The utility model relates to the technical field of motors, in particular to a balance structure of a motor adjustable mandrel system with low vibration noise for a ship, which comprises a motor shaft system, wherein the output end of the motor shaft system is fixedly connected with motor driving auxiliary equipment, an electromagnetic self-balancing adjusting part is arranged on the peripheral side of the motor shaft system, and the electromagnetic self-balancing adjusting mechanism is electrically connected with a signal processing part, and the balance structure has the beneficial effects that: the electromagnetic force is utilized to control the running track of the rotor mass center and adjust the running state of the mass center so as to realize the dynamic self-balance of the shaft system, and the aims to reduce vibration noise caused by unbalanced disturbance of the shaft system such as abrasion, corrosion, eccentricity and the like, prolong the maintenance-free period of the motor shaft system with low vibration noise for the ship and improve the fault-free running time of the motor.

Description

Balance structure of adjustable heat and tempering mandrel system of marine low-vibration-noise motor

Technical Field

The utility model relates to the technical field of motors, in particular to a balance structure of a hardening and tempering spindle system of a marine low-vibration-noise motor.

Background

In the using process of the marine low-vibration-noise motor, shafting disturbance caused by abrasion, corrosion, eccentricity and the like in long-term operation causes vibration and noise of the motor to become large in the using process, and the shafting operation is unstable when serious, so that the motor is damaged.

Therefore, it is necessary to invent a balance structure of a motor with low vibration noise for a ship, which can adjust and tune a mandrel system.

Disclosure of utility model

Therefore, the utility model provides a shafting adjustable core self-balancing structure of a marine low-vibration-noise motor, which aims at the shafting adjustable core self-balancing structure of the marine low-vibration-noise motor, and utilizes electromagnetic force to control the running track of a rotor centroid and adjust the running state of the centroid so as to realize shafting dynamic self-balancing, and aims to reduce vibration noise caused by shafting unbalanced disturbance such as abrasion, corrosion, eccentricity and the like, prolong the maintenance-free period of the marine low-vibration-noise motor shafting and improve the fault-free running time of the motor.

In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a marine low vibration noise motor can adjust quality mandrel system balanced structure, includes the motor shaft system of output fixedly connected with motor drive auxiliary machinery equipment, motor shaft system week side is provided with electromagnetism self-balancing adjustment portion, electromagnetism self-balancing adjustment mechanism electric connection has signal processing part.

Preferably, the electromagnetic self-balancing adjusting part comprises a plurality of permanent magnets, and the permanent magnets are fixedly connected to the surface of the motor shaft system in a circular array.

Preferably, the electromagnetic self-balancing adjusting part further comprises a plurality of electromagnetic coils and a coil support, wherein the electromagnetic coils are fixedly arranged on the inner side of the coil support in a circular array, the electromagnetic coils are fixedly arranged on the periphery of the permanent magnets through the coil support, and the electromagnetic coils and the permanent magnets are respectively in one-to-one correspondence.

Preferably, one end of the coil bracket, which is close to the permanent magnets, is provided with a plurality of displacement sensors in a circular array, the displacement sensors are respectively in one-to-one correspondence with the permanent magnets, and the displacement sensors are positioned between the corresponding permanent magnets and the electromagnetic coils.

Preferably, the signal processing part comprises signal processing equipment, a plurality of electromagnetic coils are electrically connected with the signal processing equipment, and a plurality of displacement sensors are electrically connected with the signal processing equipment.

The beneficial effects of the utility model are as follows:

1. The electromagnetic force is utilized to control the running track of the rotor mass center and adjust the running state of the mass center so as to realize the dynamic self-balance of the shaft system, and the aim is to reduce vibration noise caused by unbalanced disturbance of the shaft system such as abrasion, corrosion, eccentricity and the like, prolong the maintenance-free period of the motor shaft system with low vibration noise for the ship and improve the fault-free running time of the motor;

2. The displacement sensor is mature and reliable, the permanent magnet material is widely applied, and the electromagnetic correction force principle is simple and easy to implement; the data is transmitted to the signal processing equipment after being acquired and can be integrated in the central control system, so that the device is not influenced by installation space and environment, and the installation position is compact; the running track of the center of mass of the shafting is monitored on line in real time, the effect of achieving the self-balancing of the shafting by on-line center of mass adjustment is achieved, the anti-disturbance capability of the shafting is improved, vibration noise caused by disturbance can be restrained, the maintenance-free period of the rotor is improved, and the safety and reliability of the motor are improved.

Drawings

FIG. 1 is a schematic diagram of a structure provided by the present utility model;

Fig. 2 is a schematic structural diagram of the electromagnetic self-balancing adjustment part provided by the utility model.

In the figure: 1. a motor shafting; 2. an electromagnetic self-balance adjustment part; 21. a permanent magnet; 22. an electromagnetic coil; 23. a coil support; 24. a displacement sensor; 3. a signal processing device; 4. the motor drives the auxiliary equipment.

Detailed Description

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Referring to fig. 1-2, the utility model provides a balance structure of a marine low vibration noise motor adjustable spindle system, which comprises a motor shaft system 1, wherein the output end of the motor shaft system 1 is fixedly connected with motor driving auxiliary equipment 4, the motor driving auxiliary equipment 4 can be equipment such as a coupler, the motor shaft system 1 comprises a bearing, a cooling fan (if any) and other all parts which are arranged on a motor rotating shaft and rotate together with the motor rotating shaft, the balance structure is a well known technology for a person skilled in the art, and the redundant description is omitted, an electromagnetic self-balancing adjusting part 2 is arranged on the peripheral side of the motor shaft system 1, and the electromagnetic self-balancing adjusting mechanism is electrically connected with a signal processing part;

The electromagnetic self-balancing adjusting part 2 comprises a plurality of permanent magnets 21, the plurality of permanent magnets 21 are fixedly connected to the surface of a motor shaft system 1 in a circular array, the permanent magnets 21 are surface-mounted, and are convenient to assemble, disassemble and maintain, and it is to be noted that in order to ensure that the permanent magnets are reliably attached when the motor runs at high speed, carbon fibers can be wound on the surfaces of the permanent magnets or steel sleeves are added to achieve the fixing effect, the electromagnetic self-balancing adjusting part 2 further comprises a plurality of electromagnetic coils 22 and a coil bracket 23, the plurality of electromagnetic coils 22 are fixedly arranged inside the coil bracket 23 in a circular array, the plurality of electromagnetic coils 22 are fixedly arranged on the periphery of the plurality of permanent magnets 21 through the coil bracket 23, the plurality of electromagnetic coils 22 and the plurality of permanent magnets 21 are respectively in one-to-one correspondence (as shown in fig. 2), and the corresponding electromagnetic coils 22 are marked as b-1 if the permanent magnets 21 are marked as a-1, the coil bracket 23 is fixedly provided with a plurality of displacement sensors 24 close to one end of the plurality of permanent magnets 21 in a circular array, the displacement sensors 24 are respectively in one-to one correspondence with the plurality of permanent magnets 21, and the displacement sensors 24 are positioned between the corresponding permanent magnets 21 and the electromagnetic coils 22;

The signal processing part comprises a signal processing device 3, and it should be noted that the signal processing device 3 is preferably an industrial computer, and the plurality of electromagnetic coils 22 are electrically connected with the signal processing device 3 and can be used for controlling whether the electromagnetic coils 2 are electrified and the intensity of the electrified current so as to control the electromagnetic force generated by the electromagnetic coils 22, and the plurality of displacement sensors 24 are electrically connected with the signal processing device 3 and can be used for monitoring the distance between the corresponding permanent magnets 21 and the electromagnetic coils 22 so as to judge whether the motor shafting 1 is deviated;

In the present utility model, the permanent magnet 21 and the electromagnetic coil 22 are respectively marked in order from the marking position (as shown in fig. 2): the number a-1 of the permanent magnet 21 corresponds to the number b-1 of the electromagnetic coil 22, the number a-2 of the permanent magnet 21 corresponds to the number b-2 … … of the electromagnetic coil 22, and so on, the permanent magnet 21 and the electromagnetic coil 22 are marked, when the mass center of the rotor is in a stable running area in normal running, the air gap between the permanent magnet 21 and the electromagnetic coil 22 is kept uniform on the circumference, the forces generated on the circumference are marked as F1, F2 and F3 … … F16, at the moment, the permanent magnet 21 of the rotating shaft and the electromagnetic coil 22 are in balance positions and are also called reference positions, and if the motor shaft system 1 is subjected to external interference in the direction of the No. 1, the rotor moves from the reference position to the direction of the No. 1, the sizes of the air gaps of the No. 1 and the No. 9 are changed, so that the magnetic flux phi 1 is changed, at the moment, the air gap of the No. 9 corresponding to the No. 1 is increased, and the magnetic flux phi 9 is reduced; the air gap No. 1 is reduced, and the magnetic flux phi 1 is increased; as can be seen from the relationship between the magnetic field attraction force and the magnetic flux, the attraction force F9 borne by the rotor is greater than or equal to F1 at this moment, the displacement sensor 24 detects the displacement of the rotor deviating from the reference position, the signal processing device 3 converts the displacement signal into a control signal and transmits the control signal to the power amplifier (not shown in the figure), the power amplifier changes the control signal into a control current i, the current flows through the electromagnetic coil 22 to generate an electromagnetic magnetic flux phi which balances external interference, the magnetic flux phi is overlapped with the original permanent magnetic flux phi 1 in the gap and subtracted from the original permanent magnetic flux phi 9 in the gap 9, when phi 1+phi is greater than or equal to phi 9-phi i, namely phi 1 is greater than or equal to (phi 9-phi 1)/2, and the attraction force F1 generated at the two gaps is greater than or equal to F9 so that the rotor returns to the original equilibrium position; the disturbance principle received in other directions is the same. When the track of the mass center of the rotor deviates, the electromagnetic coils 22 with corresponding numbers are determined according to the deviation position and the deviation amount of the mass center, the electromagnetic field intensity and the generated electromagnetic force are adjusted by adjusting the coil power supply voltage and changing the current in the electromagnetic coils 22, so that the correction force reaches the effect of sub-adjustment of the position of the mass center of the rotor, and the rotor returns to a stable running area.

The application process of the utility model is as follows: the motor is operated under rated working conditions, the motor shaft system 1 rotates at the working rotating speed, the electromagnetic self-balancing adjusting part 2 controls the electromagnetic coil 22 to uniformly supply power and monitors voltage and coil current changes in real time, and the electromagnetic self-balancing adjusting part 2 in an initial state is ensured to be in an electromagnetic force uniform state, namely unbalanced tensile force cannot be generated. The displacement sensor 24 monitors the position of the motor shafting 1 in real time, and uploads test data to the signal processing equipment 3 in real time to complete drawing of a rotor centroid track map, and meanwhile, whether the rotor centroid track falls in a stable running area is compared in a control system. If the centroid track of the rotor falls in the stable running area, the signal processing equipment 3 does not change, and the motor continues to run stably; if the rotor centroid track deviates, the signal processing device 3 compares the deviation data to determine the deviation position, converts the corrected electromagnetic force according to the deviation distance, feeds the corrected electromagnetic force and direction back to the electromagnetic self-balancing adjustment part 2, and the electromagnetic self-balancing adjustment part 2 adjusts the power supply voltage direction and the current magnitude of the corresponding electromagnetic coil 22 according to the corrected force and direction, so that the correction force is given in the rotor deviation direction, and the motor shafting 1 is pushed to return to the normal track area.

The above description is only of the preferred embodiments of the present utility model, and any person skilled in the art may modify the present utility model or make modifications to the present utility model with the technical solutions described above. Therefore, any simple modification or equivalent made according to the technical solution of the present utility model falls within the scope of the protection claimed by the present utility model.

Claims (5)

1. The utility model provides a but marine low vibration noise motor conditioning mandrel system balanced structure, includes motor shafting (1) that output fixedly connected with motor drive auxiliary machinery equipment (4), its characterized in that: an electromagnetic self-balancing adjusting part (2) is arranged on the periphery of the motor shafting (1), and the electromagnetic self-balancing adjusting mechanism is electrically connected with a signal processing part.

2. The marine low vibration noise motor adjustable mass balance structure of claim 1, wherein: the electromagnetic self-balancing adjusting part (2) comprises a plurality of permanent magnets (21), and the permanent magnets (21) are fixedly connected to the surface of the motor shaft system (1) in a circular array.

3. The marine low vibration noise motor adjustable mass balance structure of claim 2, wherein: the electromagnetic self-balancing adjusting part (2) further comprises a plurality of electromagnetic coils (22) and coil supports (23), the electromagnetic coils (22) are fixedly arranged on the inner sides of the coil supports (23) in a circular array, the electromagnetic coils (22) are fixedly arranged on the periphery sides of the permanent magnets (21) through the coil supports (23), and the electromagnetic coils (22) correspond to the permanent magnets (21) one by one.

4. A marine low vibration noise motor adjustable mass balance structure according to claim 3, wherein: one end of the coil support (23) close to the permanent magnets (21) is fixedly provided with a plurality of displacement sensors (24) in a circular array, the displacement sensors (24) are respectively in one-to-one correspondence with the permanent magnets (21), and the displacement sensors (24) are positioned between the corresponding permanent magnets (21) and the electromagnetic coils (22).

5. The balance structure of a marine low vibration noise motor adjustable heat and power spindle system according to claim 4, wherein: the signal processing part comprises signal processing equipment (3), a plurality of electromagnetic coils (22) are electrically connected with the signal processing equipment (3), and a plurality of displacement sensors (24) are electrically connected with the signal processing equipment (3).