CN211508865U

CN211508865U - Motor balance correcting device

Info

Publication number: CN211508865U
Application number: CN202020451840.0U
Authority: CN
Inventors: 洪金宝; 程宝生; 辛佰富
Original assignee: Jiangtian Motor Co ltd
Current assignee: Jiangtian Motor Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-09-15
Anticipated expiration: 2030-03-31

Abstract

The utility model provides a motor school balancing unit belongs to motor dynamic balance technical field. The rotor dynamic balance correction device solves the problems that the existing rotor dynamic balance correction device is complex in correction, inaccurate in correction and the like. The utility model discloses a balancing ring and a plurality of balancing piece, balancing ring include cyclic annular body, are provided with the round regulation track on the body, are provided with a plurality of imports on the regulation track, and the size of import is greater than the size of balancing piece, and supreme diminishing gradually is followed to the size of balancing piece, and the width of regulation track reduces from inside to outside gradually, and in the balancing piece can enter into the regulation track through the import, the balancing piece can be spacing in the regulation track and can slide along the regulation track, the utility model discloses still including the mounting that can fix to the balancing piece. The utility model discloses set up balancing ring, balancing piece and regulation track etc. and be located regulation track's position and realize rotor dynamic balance's correction through adjusting the balancing piece, the utility model discloses simple structure, it is convenient and correct the accuracy height to rectify.

Description

Motor balance correcting device

Technical Field

The utility model belongs to the technical field of the motor dynamic balance, concretely relates to motor school balancing unit.

Background

In the production process of the motor rotor, imbalance of rotor weight can be caused due to influences of various factors (such as air holes or shrinkage holes of uneven castings of materials, errors of part weight, machining errors and the like), dynamic rotor balance is an extremely important process in the production and manufacturing process of the motor, and for a high-speed rotor, even if a small eccentric distance exists, a very large centrifugal force can be caused, so that vibration of the motor is caused, noise is generated, abrasion of a bearing is accelerated, high-frequency fatigue damage of a rotor part is caused, and the service life of the motor is shortened.

The existing motor rotor with the center height of more than 400 generally weighs more than 500kg, the rotor balance is large, for the unbalanced correction form, a balance block (balance column), a welding lug, grinding, turning and the like are generally adopted, the balance block matching mode takes more time, the precision is low, and the motor noise and vibration are easy to cause; the welding method can have adverse effects on the rotor; the methods of removing material, such as grinding or turning, are irreversible.

Disclosure of Invention

The utility model aims at solving the problems existing in the prior dynamic balance correction of the motor, and providing a motor balance correcting device which has simple structure, convenient correction, high correction accuracy and safety and reliability.

The purpose of the utility model can be realized by the following technical proposal:

the motor leveling balance device is arranged on a rotor shaft and is characterized by comprising a balance ring and a plurality of balance blocks, wherein the balance ring comprises an annular body, a circle of adjusting track is arranged on the body, a plurality of inlets are formed in the adjusting track, the size of the inlet is larger than that of the balance blocks, the size of the balance blocks gradually diminishes from bottom to top, the width of the adjusting track gradually decreases from inside to outside, the balance blocks can enter the adjusting track through the inlets, the balance blocks can be limited in the adjusting track and can slide along the adjusting track, and the motor leveling balance device further comprises a fixing piece capable of fixing the balance blocks.

The balance block is in a bottle plug shape, and the shape of the adjusting track is matched with that of the balance block. The cross-sectional shape of the adjusting track is the same as the shape of the counterweight. The balance weight is limited on the adjusting track, and the balance weight can not come out of the adjusting track along the central line direction of the adjusting track but can slide along the adjusting track. The balance weight can enter and exit the adjusting track through an inlet on the adjusting track.

Preferably, the fixing part comprises a bolt, a screw hole is axially arranged on the balance block, the screw hole penetrates through the balance block, and the length of the bolt is greater than the depth of the screw hole.

After the balance block enters the adjusting track from the opening, the balance block is axially limited in the adjusting track, and the balance block and the balance ring can be fastened through bolts.

Preferably, motor school balancing unit still include the fixed establishment of compensating ring and rotor shaft, fixed establishment including setting up the round pin axle on the rotor shaft, round pin axle and rotor shaft can dismantle the connection, the hole size of compensating ring is equivalent with the diameter size of rotor shaft, compensating ring overlaps on the rotor shaft, is provided with the breach on the compensating ring, the outer end of round pin axle can be located the breach in, compensating ring and rotor shaft between still be provided with the spacing ring.

Preferably, the rotor shaft is provided with a pin hole, and the inner end of the pin shaft can be positioned in the pin hole. When the balance ring is required to be fixedly connected with the rotor shaft, the outer end of the pin shaft is positioned in the notch of the balance ring, so that the balance ring can be limited to rotate relative to the rotor shaft, and the limit ring can limit the axial sliding of the balance ring, so that the balance ring is fixedly connected with the rotor shaft.

Preferably, the motor balancing device comprises more than two balancing weights.

Compared with the prior art, the utility model discloses set up balancing ring, balancing piece and adjusting track etc. and be located adjusting track's position and realize rotor dynamic balance's correction through adjusting the balancing piece, the utility model discloses simple structure rectifies conveniently and rectifies the accuracy height.

Drawings

FIG. 1 is a schematic view of the present invention applied to a rotor of an electric machine;

FIG. 2 is a schematic view of the present invention connected to a rotor shaft;

FIG. 3 is a schematic structural view of the balance ring of the present invention;

fig. 4 is a schematic structural diagram of the balance weight of the present invention.

In the figure, 1, a rotor shaft; 2. a balance ring; 3. a counterbalance; 4. a body; 5. adjusting the track; 6. an inlet; 7. a bolt; 8. a screw hole; 9. a pin shaft; 10. a notch; 11. a limit ring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-4, the utility model provides a motor leveling balance device, set up at the both ends of rotor shaft 1, the hole size of compensating ring 2 matches with the diameter size of rotor shaft 1, and compensating ring 2 cover is located on rotor shaft 1.

The utility model discloses a balancing ring 2 and a plurality of balancing piece 3, balancing ring 2 including cyclic annular body 4, be provided with round regulation track 5 on the body 4, be provided with a plurality of imports 6 on the regulation track 5, import 6 is circularly, the size of import 6 is greater than the size of balancing piece 3, supreme diminishing gradually is down followed to the size of balancing piece 3.

The width of adjusting track 5 reduces from inside to outside gradually, and in the balancing piece 3 can enter into adjusting track 5 through import 6, the balancing piece 3 can be spacing in adjusting track 5 and can slide along adjusting track 5, and balancing piece 3 is the bottle plug shape, adjusts track 5's shape and balancing piece 3's shape phase-match. The sectional shape of the adjustment rail 5 is the same as the shape of the weight 3. The adjustment track 5 is also annular. The balance weight 3 is limited to the adjustment rail 5, and cannot come out of the adjustment rail 5 along the center line direction of the adjustment rail 5, but can slide along the adjustment rail 5. The counterweight 3 can enter and exit the adjusting track 5 through an inlet 6 on the adjusting track 5.

The utility model discloses still including the mounting that can fix balancing piece 3. The fixing piece comprises a bolt 7, a screw hole 8 is axially arranged on the balance block 3, an external thread is arranged on the bolt 7, an internal thread is arranged in the screw hole 8, the screw hole 8 penetrates through the balance block 3, and the length of the bolt 7 is larger than the depth of the screw hole 8. After the balancing piece 3 enters the adjusting track 5 from the inlet 6, the balancing piece is axially limited in the adjusting track 5, and because the length of the bolt 7 is greater than the depth of the screw hole 8, when the bottom of the bolt 7 is pushed to the bottom (inner side) of the adjusting track 5, the balancing piece 3 can be tightly pushed to the inner wall of the adjusting track 5 (the balancing piece 3 is axially limited in the adjusting track 5, so that the balancing piece cannot run out), so that the balancing piece 3 can be fastened with the balancing ring 2 through the bolt 7.

The utility model discloses still include the fixed establishment of balanced ring 2 and rotor shaft 1, fixed establishment including setting up round pin axle 9 on rotor shaft 1, round pin axle 9 can dismantle with rotor shaft 1 and be connected, be provided with the pinhole on the rotor shaft 1, the inner of above-mentioned round pin axle 9 can be located the pinhole.

A gap 10 is arranged on the balance ring 2, the outer end of the pin shaft 9 can be positioned in the gap 10, and a limit ring is arranged between the balance ring 2 and the rotor shaft 1. When the balance ring 2 is required to be fixedly connected with the rotor shaft 1, the outer end of the pin shaft 9 is positioned in the notch 10 of the balance ring 2, so that the balance ring 2 can be limited to rotate relative to the rotor shaft 1, and the limit ring can limit the axial sliding of the balance ring 2, so that the balance ring 2 is fixedly connected with the rotor shaft 1.

The utility model discloses set up two balancing pieces 3, be provided with two imports 6 on adjusting rail 5, import 6 distributes on adjusting rail 5's a diameter.

The utility model discloses a position (fasten balancing piece 3 after adjusting the position) on the adjusting track 5 on corresponding gimbal 2 is fixed to 1 both ends of rotor shaft (axle extension end and non-axle extension end) back to balancing ring 2, rectifies the dynamic balance of rotor, the utility model discloses rectify conveniently and accurately.

It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended manner, i.e., in a manner equivalent to "including at least … …", and not in a closed manner, i.e., in a manner not to be interpreted as "including … … only".

Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The motor leveling balance device is arranged on a rotor shaft and is characterized by comprising a balance ring and a plurality of balance blocks, wherein the balance ring comprises an annular body, a circle of adjusting track is arranged on the body, a plurality of inlets are formed in the adjusting track, the size of the inlet is larger than that of the balance blocks, the size of the balance blocks gradually diminishes from bottom to top, the width of the adjusting track gradually decreases from inside to outside, the balance blocks can enter the adjusting track through the inlets, the balance blocks can be limited in the adjusting track and can slide along the adjusting track, and the motor leveling balance device further comprises a fixing piece capable of fixing the balance blocks.

2. The motor leveling apparatus of claim 1, wherein the securing member comprises a threaded bolt, wherein the threaded bolt is axially disposed in the counterweight and extends through the counterweight, and wherein the length of the threaded bolt is greater than the depth of the threaded bolt.

3. The motor leveling balance device as claimed in claim 1 or 2, wherein the motor leveling balance device further comprises a fixing mechanism for the balance ring and the rotor shaft, the fixing mechanism comprises a pin shaft arranged on the rotor shaft, the pin shaft is detachably connected with the rotor shaft, the size of an inner hole of the balance ring is equal to the diameter size of the rotor shaft, the balance ring is sleeved on the rotor shaft, a notch is formed in the balance ring, the outer end of the pin shaft can be located in the notch, and a limit ring is further arranged between the balance ring and the rotor shaft.

4. The motor leveling apparatus of claim 3 wherein the rotor shaft defines pin holes, the inner ends of the pins being positionable within the pin holes.

5. A motor leveling device according to claim 1 or 2 wherein the motor leveling device includes more than two counterbalances.