CN213879525U

CN213879525U - Dynamic balance motor structure

Info

Publication number: CN213879525U
Application number: CN202022542494.XU
Authority: CN
Inventors: 郁华
Original assignee: Changzhou Bl Motor Co ltd
Current assignee: Changzhou Bl Motor Co ltd
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-08-03
Anticipated expiration: 2030-11-06

Abstract

The utility model belongs to the technical field of dynamic balance technique and specifically relates to a dynamic balance motor structure.A balancing device is fixed on a rotor of a motor, the balancing device comprises an annular support frame, the annular support frame is provided with balancing units which are uniformly distributed on the circumference, the balancing units are arranged on a guide rod, springs are arranged at two ends of the guide rod, one end of each spring is fixed on the balancing unit, the other end of each spring is fixed on the annular support frame, in the process of rotor rotation, the balancing units can overcome the acting force of the spring at any side, and the center of gravity is reconstructed on the guide rod, so that the dynamic balance in the process of rotor rotation is ensured, the motor shaft is prevented from vibrating, and the control precision and the service life of the motor are ensured; the bearing that sets up plays supporting role to motor shaft both ends to bear impact load, and the sealed damping pad of L type both can prevent that the bearing from leaking oil, can the damping again, further improve the dynamic balance performance of motor.

Description

Dynamic balance motor structure

Technical Field

The utility model belongs to the technical field of the dynamic balance technique and specifically relates to a dynamic balance motor structure.

Background

The motor contains the shell, and the shell inner wall is fixed with the stator, and the inside rotation of shell is connected with the motor shaft and fixes the rotor at the motor epaxial, and the rotor is when rotating, and its dynamic balance coefficient has great influence to the wholeness ability of motor, and when the dynamic balance of rotor was not good, the motor shaft that easily takes place vibrates, seriously influences motor control accuracy and life.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not good enough of dynamic balance of current motor, the utility model provides a dynamic balance motor structure.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a dynamic balance motor structure, contains end cover one, casing and end cover two, the casing inner wall is fixed with the stator, rotate between end cover one and the end cover two and connect the motor shaft, be fixed with the rotor on the motor shaft, the rotor is located the stator, characterized by, be fixed with balancing unit on the rotor, balancing unit contains the annular bracing frame, set up the balanced unit of circumference equipartition on the annular bracing frame, the balanced unit wears on the guide bar, the spring has been worn at the guide bar both ends, spring one end is fixed on the balanced unit, and the other end is fixed on the annular bracing frame.

According to another embodiment of the present invention, further comprising, the end of the rotor is provided with a groove, the balancing device is located in the groove and fixed by bolts.

According to the utility model discloses a further embodiment, further include, balancing unit's ring support frame sets up the annular of circumference equipartition, the guide bar is the arcuation, and is located the annular, the end fixing of spring is in the annular inner wall.

According to another embodiment of the present invention, further comprising, the balancing device has two sets, respectively located at both ends of the rotor. Through two groups of balancing devices, the symmetry of the structures at the two ends of the rotor is guaranteed, meanwhile, the position of gravity center reconstruction is increased, and the dynamic balance performance of the motor is better guaranteed.

According to another embodiment of the present invention, further comprising, the number of balancing units is at least three groups.

According to the utility model discloses a further embodiment, further include, the motor shaft rotates the junction with end cover one, end cover two and is provided with the bearing, bearing department is provided with the sealed damping pad that the cross-section is the L type. The bearing plays a supporting role to the both ends of motor shaft to bear impact load, and the sealed damping pad of L type both can prevent that the bearing from leaking oil, can the damping again, further improves the dynamic balance performance of motor.

The utility model has the advantages that in the process of rotor rotation, the balance unit can overcome the acting force of any one side spring and reconstruct the gravity center on the guide rod, thereby ensuring the dynamic balance in the process of rotor rotation, preventing the vibration of the motor shaft and ensuring the control precision and the service life of the motor; the bearing that sets up plays supporting role to motor shaft both ends to bear impact load, and the sealed damping pad of L type both can prevent that the bearing from leaking oil, can the damping again, further improve the dynamic balance performance of motor.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a left side view of the rotor structure;

fig. 3 is a schematic structural diagram of another embodiment of the present invention.

In the figure, the motor comprises an end cover I, an end cover II, a stator, a motor shaft 5, a rotor 6-1, a groove 7, an annular supporting frame 7-1, an annular supporting frame 7-2, a balancing unit 7-3, a guide rod 7-4, a spring 7-5, an annular groove 8, a bearing 9 and a sealing vibration damping pad.

Detailed Description

Fig. 1 to 2 are schematic structural diagrams of the present invention, a dynamic balance motor structure, which comprises a first end cap 1, a casing 2 and a second end cap 3, a stator 4 is fixed on the inner wall of the shell 2, a motor shaft 5 is rotatably connected between the first end cover 1 and the second end cover 3, a rotor 6 is fixed on the motor shaft 5, the rotor 6 is positioned in the stator 4, a balancing device 7 is fixed on the rotor 6, the balancing device 7 comprises an annular supporting frame 7-1, balancing units 7-2 which are uniformly distributed on the circumference are arranged on the annular supporting frame 7-1, the balance unit 7-2 is penetrated on the guide rod 7-3, the two ends of the guide rod 7-3 are penetrated with springs 7-4, one end of the spring 7-4 is fixed on the balance unit 7-2, and the other end is fixed on the annular support frame 7-1.

In the application, a plurality of balancing units 7-2 are arranged in the balancing device 7, in the rotating process of the rotor 6, the balancing units 7-2 can overcome the acting force of the spring 7-4 on any side, and gravity center reconstruction is carried out on the guide rod 7-3, so that dynamic balance in the rotating process of the rotor 6 is ensured, the motor shaft 5 is prevented from vibrating, and the control precision and the service life of the motor are ensured.

According to another embodiment of the present invention, it further comprises that the end of the rotor 6 is provided with a groove 6-1, and the balancing device 7 is located in the groove 6-1 and fixed by bolts.

According to another embodiment of the present invention, further comprising that the ring support frame 7-1 of the balancing device 7 is provided with ring grooves 7-5 uniformly distributed circumferentially, the guide rods 7-3 are arc-shaped and located in the ring grooves 7-5, and the ends of the springs 7-4 are fixed to the inner walls of the ring grooves 7-5.

According to another embodiment of the present invention, it further comprises that there are two groups of said balancing means 7, located at the two ends of the rotor 6 respectively. Through two groups of balancing devices 7, the symmetry of the structures at the two ends of the rotor 6 is ensured, and meanwhile, the position of gravity center reconstruction is increased, so that the dynamic balance performance of the motor is better ensured.

According to another embodiment of the present invention, it further comprises that the number of said balancing units 7-2 is at least three groups.

According to the utility model discloses a further embodiment, further include, motor shaft 5 rotates the junction with end cover 1, end cover two 3 and is provided with bearing 8, bearing 8 department is provided with the sealed damping pad 9 that the cross-section is the L type. The bearing 8 supports two ends of the motor shaft 5 and bears impact load, and the L-shaped sealing vibration damping pad 9 can prevent the bearing 8 from leaking oil and damp vibration, so that the dynamic balance performance of the motor is further improved.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A dynamic balance motor structure comprises a first end cover (1), a casing (2) and a second end cover (3), wherein a stator (4) is fixed on the inner wall of the casing (2), a motor shaft (5) is rotatably connected between the first end cover (1) and the second end cover (3), a rotor (6) is fixed on the motor shaft (5), and the rotor (6) is positioned in the stator (4), the dynamic balance motor structure is characterized in that a balance device (7) is fixed on the rotor (6), the balance device (7) comprises an annular support frame (7-1), balance units (7-2) which are uniformly distributed on the circumference are arranged on the annular support frame (7-1), the balance units (7-2) are penetrated on guide rods (7-3), springs (7-4) are penetrated at two ends of the guide rods (7-3), one end of each spring (7-4) is fixed on the balance unit (7-2), the other end is fixed on an annular supporting frame (7-1).

2. A dynamically balanced motor construction according to claim 1, characterised in that the rotor (6) is provided with recesses (6-1) at its ends, and that the balancing means (7) is located in the recesses (6-1) and secured by means of bolts.

3. A dynamic balance motor structure according to claim 1, characterized in that the ring-shaped support frame (7-1) of the balance device (7) is provided with ring grooves (7-5) which are uniformly distributed on the circumference, the guide rods (7-3) are arc-shaped and are positioned in the ring grooves (7-5), and the end parts of the springs (7-4) are fixed on the inner walls of the ring grooves (7-5).

4. A dynamically balanced motor construction according to any one of claims 1 to 3 characterised in that there are two groups of balancing means (7) located at each end of the rotor (6).

5. A dynamically balanced motor construction according to claim 1, characterized in that the number of balancing units (7-2) is at least three.

6. The dynamic balance motor structure as claimed in claim 1, wherein a bearing (8) is arranged at the rotary connection position of the motor shaft (5) and the first end cover (1) and the second end cover (3), and a sealing damping pad (9) with an L-shaped section is arranged at the bearing (8).