CN217692933U

CN217692933U - Vibration and noise reduction device of motor rotor

Info

Publication number: CN217692933U
Application number: CN202221469190.8U
Authority: CN
Inventors: 鲁大健
Original assignee: Jiangsu Jinhe Motor Manufacturing Co ltd
Current assignee: Jiangsu Jinhe Motor Manufacturing Co ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-10-28
Anticipated expiration: 2032-06-13

Abstract

The utility model belongs to the technical field of the motor damping, a device of making an uproar falls in electric motor rotor's damping is disclosed. This device of making an uproar falls in electric motor rotor's damping, including the casing, be provided with the rotation axis in the casing, the rotor has been cup jointed in the rotation axis one end outside, and the silence pad has been cup jointed in the other end outside of rotation axis, and the bearing has been cup jointed in the outside of silence pad, and fixedly connected with buffer tube in the casing, buffer tube keep away from the one end interpolation of casing and have been connected with the cushion column. This device of making an uproar falls in electric motor rotor's damping, through the buffer tube, the buffering post, first gasbag, first gas pocket, the cooperation of fore-set and intubate, when the rotor rotates and drives the rotation axis rotation and produce the vibration, the fore-set inwards extrudees the spring and receives the reaction force of atmospheric pressure, the air in the intubate makes first gasbag grow slowly through first gas pocket discharge to first gasbag in simultaneously, can provide certain buffering effect for the buffering post, can effectively slow down the vibration that the rotation axis produced, prevent to cause the influence to other components of motor, reduce the noise promptly.

Description

Vibration and noise reduction device of motor rotor

Technical Field

The utility model relates to a technical field of motor damping specifically is a device of making an uproar falls in electric motor rotor's damping.

Background

The motor is an electromagnetic device for realizing electric energy conversion or transmission according to the electromagnetic induction law, and mainly has the function of generating driving torque to serve as a power source of electric appliances or various machines and convert mechanical energy into electric energy.

The motor can cause rotor vibration due to mechanical manufacturing, electromagnetism and other reasons when in work, the rotor is transmitted to a motor element and a motor shell which are contacted with a rotating shaft through the rotating shaft, vibration of the whole machine can be caused in the transmission process, noise is generated, and long-time vibration can cause loosening, abrasion and deformation of internal parts to affect the safety and the service life of equipment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric motor rotor's damping falls device of making an uproar, this electric motor rotor's damping falls device of making an uproar has solved the problem that provides in the background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a device of making an uproar falls in electric motor rotor's damping, includes the casing, be provided with the rotation axis in the casing, the rotor has been cup jointed in the rotation axis one end outside, the silence pad has been cup jointed in the other end outside of rotation axis, the bearing has been cup jointed in the outside of silence pad, fixedly connected with buffer tube in the casing, it has the buffering post to peg graft in the one end that the casing was kept away from to the buffer tube, the one end fixedly connected with limiting plate of buffer tube is kept away from to the buffering post, the one end fixedly connected with gasket of buffering post is kept away from to the limiting plate, the outside fixed connection of gasket and bearing.

The inner wall of casing just is located the intraductal fixedly connected with intubate of buffering, the first gasbag of outside fixedly connected with of intubate, the outside of first gasbag contacts with the inner wall of buffer tube, the buffering post is close to the one end fixedly connected with fore-set of intubate, the fore-set pegs graft mutually with the intubate, still be provided with the spring in the intubate, the both ends of spring respectively with the inner wall and the fore-set fixed connection of casing, first gas pocket has been seted up on the intubate.

Preferably, the bar groove has been seted up to the inner wall of buffer tube, the outside fixedly connected with stopper of buffering post, stopper sliding connection is at the bar inslot, the bar inslot still is provided with the second gasbag.

Preferably, the inner wall of the buffer tube is further provided with a second air hole, one end of the second air hole is communicated with the first air bag, and the other end of the second air hole is fixedly communicated with the second air bag in the strip-shaped groove.

Preferably, the inner wall of the shell is fixedly connected with elastic pieces at two sides of the buffer tube, and the elastic pieces are fixedly connected with the limiting plate.

Preferably, the number of the buffer tubes is four, and the buffer tubes are annularly distributed by taking the circle center of the shell as the center.

Preferably, the second air hole is L-shaped, the silencing pad is made of fluororubber, and the first air hole is formed in the first air bag.

By adopting the technical scheme, the beneficial effects of the utility model are that:

1. this device of making an uproar falls in electric motor rotor's damping, through the buffer tube, the buffering post, first gasbag, first gas pocket, the cooperation of fore-set and intubate, when the rotor rotates and drives the rotation axis rotation and produce the vibration, the fore-set inwards extrudees the spring and receives the reaction force of atmospheric pressure, the air in the intubate makes first gasbag grow slowly through first gas pocket discharge to first gasbag in simultaneously, can provide certain buffering effect for the buffering post, can effectively slow down the vibration that the rotation axis produced, prevent to cause the influence to other components of motor, reduce the noise promptly.

2. This electric motor rotor's damping falls device of making an uproar, through the bar groove, the stopper, the second gas pocket, and the cooperation of second gasbag, on the one hand can carry on spacingly the bumping post, prevent that it from producing change by a relatively large margin, on the other hand makes the air admission second gasbag grow in the first gasbag, cushion the stopper, play supplementary damping's effect, can prevent through setting up the shell fragment that the holistic vibration amplitude of rotation axis is too big, with amplitude control at less within range and can control.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is an enlarged view of the point A in the structure diagram 1 of the present invention;

fig. 3 is an enlarged view of the position B in the structure diagram 2 of the present invention.

In the figure: the air bag type air bag comprises a shell 1, a rotating shaft 2, a mute pad 3, a bearing 4, a buffer tube 5, a buffer column 6, a limiting plate 7, a gasket 8, a first air bag 9, an insertion tube 10, a top column 11, a spring 12, a strip-shaped groove 13, a limiting block 14, a first air hole 15, a second air bag 16, a spring piece 17 and a second air hole 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a device of making an uproar falls in electric motor rotor's damping, which comprises a housin 1, be provided with rotation axis 2 in the casing 1, the rotor has been cup jointed in the 2 one end outsides of rotation axis, silence pad 3 has been cup jointed in the other end outside of rotation axis 2, bearing 4 has been cup jointed in the outside of silence pad 3, fixedly connected with buffer tube 5 in the casing 1, buffer tube 5 is kept away from to buffer tube 5's one end interpolation has buffering post 6, buffering post 6 keeps away from the one end fixedly connected with limiting plate 7 of buffer tube 5, the one end fixedly connected with gasket 8 of buffering post 6 is kept away from to limiting plate 7, gasket 8 and bearing 4's outside fixed connection, guarantee stator circular telegram back, the rotor rotates and can normally operate when driving rotation axis 2 and rotate, can not exert an influence to it.

Casing 1's inner wall just is located fixedly connected with intubate 10 in buffer tube 5, the outside fixedly connected with first gasbag 9 of intubate 10, the outside of first gasbag 9 contacts with the inner wall of buffer tube 5, buffer column 6 is close to one end fixedly connected with fore-set 11 of intubate 10, fore-set 11 pegs graft with intubate 10 mutually, still be provided with spring 12 in the intubate 10, spring 12's both ends respectively with casing 1's inner wall and fore-set 11 fixed connection, first gas pocket 15 has been seted up on the intubate 10, when rotor vibration drives rotation axis 2 vibration, fore-set 11 inside extrusion spring 12 can tentatively obtain certain buffering, receive the reaction of intubate 10 internal gas pressure simultaneously, can effectively cushion, reduce the vibration that rotation axis 2 produced, and air in the intubate 10 slowly discharges through first gas pocket 15 and makes first gasbag 16 grow in to first gasbag, can provide certain buffering effect for buffer column 6, three-layer buffering effect can effectively guarantee rotation axis 2's stability, spring 12 can make fore-set 11 restore to the fore-set 11 simultaneously, make rotation axis 2 tend to stable state.

Strip groove 13 has been seted up to buffer tube 5's inner wall, the outside fixedly connected with stopper 14 of buffer column 6, stopper 14 sliding connection still is provided with second gasbag 16 in the strip groove 13, can play spacing effect on the one hand, and the air in the first gasbag 16 of on the other hand makes the 16 grow of second gasbag in can slowly getting into second gasbag 16, cushions stopper 14, plays supplementary damping's effect.

The inner wall of the buffer tube 5 is further provided with a second air hole 18, one end of the second air hole 18 is communicated with the first air bag 9, and the other end of the second air hole 18 is fixedly communicated with the second air bag 16 in the strip-shaped groove 13, so that the first air bag 9 and the second air bag 16 can be communicated through the second air hole 18, and the vibration reduction effect is fully exerted.

The inner wall of casing 1 just is located the equal fixedly connected with shell fragment 17 in the both sides of buffer tube 5, and two shell fragments 17 all with limiting plate 7 fixed connection, can prevent that the holistic vibration range of rotation axis 2 is too big, with amplitude control at less within range and can stable control.

The number of the buffer tubes 5 is four, and the buffer tubes are distributed annularly by taking the circle center of the shell 1 as the center, so that the vibration reduction effect is enhanced.

The second air hole 18 is L-shaped, the mute pad 3 is made of fluororubber, has strong high-temperature-resistant effect and toughness, can be placed in the motor for long time, and the first air hole 15 is positioned in the first air bag 9.

When this motor rotor's damping falls device of making an uproar uses, when the rotor rotates and drives rotation axis 2 and rotate and produce the vibration, drive buffer tube 5 in the inside insertion of buffer post 6 on the limiting plate 7, and extrude spring 12 in the intubate 10 through fore-set 11, through the atmospheric pressure difference in the intubate 10 and spring 12's reaction force, make the vibration of rotation axis 2 obtain preliminary buffering, the intubate 10 air slowly gets into in first gasbag 9 and makes first gasbag 9 grow through first gas pocket 15 this moment, cushion post 6, air in the first gasbag 9 slowly gets into in second gasbag 16 through second gas pocket 18, make the 16 grow of second gasbag buffer block 14 on the buffer post 6 and cushion, this damping falls the device of making an uproar and can effectively slow down the vibration that produces when the rotor rotates through the cooperation of multiple buffering damping, protection rotation axis 2 does not cause the injury to other components, reduce the noise that the work produced, extension motor life.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a device of making an uproar falls in damping of electric motor rotor, includes casing (1), be provided with rotation axis (2) in casing (1), the rotor has been cup jointed in the rotation axis (2) one end outside, silence pad (3) have been cup jointed in the other end outside of rotation axis (2), bearing (4), its characterized in that have been cup jointed in the outside of silence pad (3): a buffer tube (5) is fixedly connected in the shell (1), a buffer column (6) is inserted into one end, far away from the shell (1), of the buffer tube (5), a limiting plate (7) is fixedly connected to one end, far away from the buffer tube (5), of the buffer column (6), a gasket (8) is fixedly connected to one end, far away from the buffer column (6), of the limiting plate (7), and the gasket (8) is fixedly connected with the outer side of the bearing (4);

the inner wall of casing (1) just is located fixedly connected with intubate (10) in buffer tube (5), the first gasbag of outside fixedly connected with (9) of intubate (10), the outside of first gasbag (9) contacts with the inner wall of buffer tube (5), one end fixedly connected with fore-set (11) that buffer post (6) are close to intubate (10), peg graft mutually with intubate (10) in fore-set (11), still be provided with spring (12) in intubate (10), the both ends of spring (12) respectively with the inner wall and fore-set (11) fixed connection of casing (1), first gas pocket (15) have been seted up on intubate (10).

2. A vibration and noise reduction apparatus for a rotor of an electric machine according to claim 1, wherein: strip-shaped groove (13) have been seted up to the inner wall of buffer tube (5), the outside fixedly connected with stopper (14) of buffer column (6), stopper (14) sliding connection is in strip-shaped groove (13), still be provided with second gasbag (16) in strip-shaped groove (13).

3. A vibration and noise reduction apparatus for a rotor of an electric machine according to claim 2, wherein: the inner wall of the buffer tube (5) is further provided with a second air hole (18), one end of the second air hole (18) is communicated with the first air bag (9), and the other end of the second air hole (18) is fixedly communicated with a second air bag (16) in the strip-shaped groove (13).

4. A vibration and noise reduction device for a rotor of an electric machine according to claim 3, wherein: the inner wall of the shell (1) is located on two sides of the buffer tube (5) and is fixedly connected with elastic pieces (17), and the elastic pieces (17) are fixedly connected with the limiting plate (7).

5. A vibration and noise reduction device of a rotor of an electric machine according to claim 4, wherein: the number of the buffer tubes (5) is four, and the buffer tubes are annularly distributed by taking the circle center of the shell (1) as the center.

6. A vibration and noise reduction device of a rotor of an electric machine according to claim 5, wherein: the second air hole (18) is L-shaped, the silencing pad (3) is made of fluororubber, and the first air hole (15) is located in the first air bag (9).