CN219045542U

CN219045542U - Device for inhibiting shaft vibration

Info

Publication number: CN219045542U
Application number: CN202222575119.4U
Authority: CN
Inventors: 黄焱; 莫永忠; 黄理权; 廖晴
Original assignee: Shenzhen Sanhuo Technology Co ltd
Current assignee: Shenzhen Sanhuo Technology Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-05-19
Anticipated expiration: 2032-09-28

Abstract

The utility model discloses a device for inhibiting shaft vibration, which comprises a shaft sleeve, wherein an outer shell is fixedly bonded at the outer end of the shaft sleeve, an inner shell is fixedly arranged in one side of the outer shell, a flywheel is mounted at the outer end of one side of the outer shell, and the outer edge of the flywheel is bonded with the inner wall of the inner shell through elastic glue. Firstly, the shaft and the shaft sleeve are assembled together, when the shaft vibrates radially in a certain rotating speed range, the outer shell can vibrate radially along with the shaft, so that the inner shell and the elastic rubber are driven to vibrate radially, the flywheel tends to keep radial immobility due to large inertia, the inner shell and the flywheel can pull the elastic rubber together, the elastic rubber deforms, the energy and the amplitude of the shaft vibration are absorbed, the shaft vibration is effectively restrained, and the safety during integral use is improved.

Description

Device for inhibiting shaft vibration

Technical Field

The utility model belongs to the technical field of motors, and particularly relates to a device for inhibiting shaft vibration.

Background

At present, a stepping motor and a servo motor are all commonly used elements in automatic equipment, wherein the stepping motor, the servo motor and the like commonly generate larger vibration when working, particularly when resonating within a certain rotating speed range, the motor shaft has large amplitude, and large noise is generated, and even the whole system is in fault. Therefore, vibration damping devices such as vibration damping pads are required to be additionally arranged on the related mechanisms.

However, the conventional vibration damping pad is difficult to match to the rotational inertia of the motor shaft, and the manufacturing process is also complicated. Other vibration damping devices have the disadvantages of complex structure, small vibration damping rotation speed range, and the like. When in use, the anti-theft alarm has a relatively large potential safety hazard.

In view of this, a device for suppressing shaft vibration is proposed.

Disclosure of Invention

The utility model aims at: in order to solve the above-mentioned problems, a device for suppressing shaft vibration is provided.

The technical scheme adopted by the utility model is as follows: the device for inhibiting the shaft vibration comprises a shaft sleeve, wherein the outer end of the shaft sleeve is fixedly adhered with an outer shell, and an inner shell is fixedly arranged inside one side of the outer shell;

the flywheel is arranged at the outer end of one side of the outer shell, which is positioned on the inner shell, and the outer edge of the flywheel is bonded with the inner wall of the inner shell through elastic glue.

In a preferred embodiment, the inner shell, outer shell and sleeve are all made of a low density hard material.

In a preferred embodiment, the inner shell is fixed inside the outer shell in a nested manner, and the cross section of the inner shell is in a shape of a C.

In a preferred embodiment, the sleeve is provided with a plurality of threaded holes or keyways.

In a preferred embodiment, the flywheel is annular in shape as a whole, and the flywheel is made of a high-density material.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows: when the shaft vibrates radially in a certain rotating speed range, the outer shell can vibrate radially along with the shaft, so that the inner shell and the elastic rubber are driven to vibrate radially, the flywheel tends to keep radial immobility due to large inertia, the inner shell and the flywheel pull the elastic rubber jointly, the elastic rubber deforms, the energy and the amplitude of the shaft vibration are absorbed, the vibration of the shaft is effectively restrained, the whole structure is simple, the manufacturing cost is low, and the whole using effect can be guaranteed.

Drawings

Fig. 1 is a schematic overall structure of the first embodiment;

fig. 2 is a schematic overall structure of the second embodiment;

fig. 3 is a schematic overall structure of the third embodiment.

The marks in the figure: 1-inner shell, 2-flywheel, 3-elastic glue, 4-outer shell, 5-shaft sleeve, 6-cover plate and 7-flywheel frame.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The present application is described in further detail below in conjunction with figures 1-3.

Embodiment one:

an embodiment of the application discloses a device for inhibiting shaft vibration. Referring to fig. 1, a device for suppressing shaft vibration includes a shaft sleeve 5, an outer shell 4 is fixedly adhered to an outer end of the shaft sleeve 5, an inner shell 1 is fixedly arranged in one side of the outer shell 4, a flywheel 2 is mounted at an outer end of one side of the outer shell 4, an outer edge of the flywheel 2 is adhered to an inner wall of the inner shell 1 through an elastic adhesive 3, when the shaft vibrates radially within a certain rotation speed range, the outer shell 4 vibrates radially along with the shaft 5, so that the inner shell and the elastic adhesive vibrate radially, the flywheel tends to keep radial still due to large inertia, and accordingly the inner shell 1 and the flywheel 2 pull the elastic adhesive 3 together, the elastic adhesive 3 deforms, energy and vibration amplitude of the shaft vibration are absorbed, and accordingly the shaft vibration is effectively suppressed.

Referring to fig. 1, the inner housing 1, the outer housing 4 and the shaft housing 5 are all made of a low density hard material, so that the moment of inertia of the motor shaft can be reduced when it rotates.

Referring to fig. 1, an inner case 1 is fixed inside an outer case 4 in a nested manner, and the cross section of the inner case 1 is shaped like a letter "C", so that a flywheel 2 can be adhered to inner walls of both side edges of the inner case 1 through elastic glue 3.

Wherein, flywheel 2 is annular as a whole, and flywheel 2 is high-density material and makes.

The flywheel 2 is made of metal or alloy material.

It should be noted that the elastic glue 3 has good elasticity, so that the flywheel 2 can automatically float within a certain radial range.

Referring to fig. 1, a plurality of screw holes or key grooves are formed in a shaft sleeve 5, and when assembling, a shaft is inserted into the shaft sleeve 5 and then coupled with the shaft through locking members on the screw holes or key grooves, so that the shaft sleeve 5 and the shaft can be assembled.

The implementation principle of the device for inhibiting shaft vibration in the first embodiment of the present application is as follows: during assembly, the shaft is inserted into the shaft sleeve 5 and then is connected with the shaft through the locking piece on the threaded hole or the key groove, when the shaft vibrates radially in a certain rotating speed range, the outer shell 4 can vibrate radially along with the shaft, so that the inner shell and the elastic rubber are driven to vibrate radially, the flywheel tends to keep radial immobility due to large inertia, the inner shell 1 and the flywheel 2 can pull the elastic rubber 3 together, the elastic rubber 3 deforms, and the energy and the amplitude of the shaft vibration are absorbed, so that the shaft vibration is effectively restrained, and the safety during integral use is improved.

Embodiment two:

referring to fig. 2, the second embodiment is different from the first embodiment in that the cover plate 6 is included, the cover plate 6 is fixedly connected in the housing 4, and the outer edge of the flywheel 2 is bonded to the inner wall of the housing 4 through the elastic glue 3. The cover plate 6 replaces the inner housing 1, and the overall installation size can be further reduced.

Embodiment III:

referring to fig. 3, the third embodiment is different from the first embodiment in that the inner and outer shells are combined into the flywheel frame 7, the flywheel 2 is adhered to the flywheel frame 7 through the elastic glue 3, and the flywheel frame 7 is fixed on the shaft sleeve 4, so that the overall installation size can be further reduced while the vibration is suppressed, and the overall structure is simpler.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A device for damping vibrations of a shaft, comprising a sleeve (5), characterized in that: an outer shell (4) is fixedly bonded at the outer end of the shaft sleeve (5), and an inner shell (1) is fixedly arranged inside one side of the outer shell (4);

the flywheel (2) is arranged at the outer end of one side of the outer shell (4) positioned on the inner shell (1), and the outer edge of the flywheel (2) is bonded with the inner wall of the inner shell (1) through elastic glue (3).

2. A device for suppressing vibration of a shaft as defined in claim 1, wherein: the inner shell (1), the outer shell (4) and the shaft sleeve (5) are all made of low-density hard materials.

3. A device for suppressing vibration of a shaft as defined in claim 1, wherein: the inner shell (1) is fixed inside the outer shell (4) in a nested mode, and the section of the inner shell (1) is C-shaped.

4. A device for suppressing vibration of a shaft as defined in claim 1, wherein: a plurality of threaded holes or key grooves are formed in the shaft sleeve (5).

5. A device for suppressing vibration of a shaft as defined in claim 1, wherein: the flywheel (2) is annular as a whole, and the flywheel (2) is made of high-density materials.