CN214945765U

CN214945765U - Bearing seat

Info

Publication number: CN214945765U
Application number: CN202121559749.1U
Authority: CN
Inventors: 孙永强; 贺智威; 柳哲; 刘�东
Original assignee: Candela Shenzhen New Energy Technology Co Ltd
Current assignee: Candela Shenzhen New Energy Technology Co Ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2021-11-30
Anticipated expiration: 2031-07-09

Abstract

The utility model relates to a bearing seat, including bearing frame body and the low rigidity skeleton of setting in the bearing frame body, low rigidity skeleton is ring shape, sets up in the bearing outside of treating the installation to with the bearing coaxial core of treating the installation, be provided with the mounting groove that is used for installing the attenuator along its circumference on the low rigidity skeleton, the attenuator is ring shape, inlays to establish in the mounting groove. The utility model discloses a change flywheel bearing frame's rigidity and damping, ensure that the resonance point of flywheel rotor must be outside rated working speed scope, also can restrain the vibration range of rotor simultaneously.

Description

Bearing seat

Technical Field

The utility model belongs to the technical field of antifriction bearing, concretely relates to bearing frame of variable rigidity and variable damping.

Background

The flywheel rotor is the main energy storage component of the flywheel energy storage system. When the flywheel system needs to store energy, the flywheel rotor increases the rotating speed and converts the electric energy into mechanical energy. On the contrary, when the flywheel system needs to release energy, the flywheel rotor reduces the rotating speed and converts the mechanical energy into electric energy. When the flywheel system works normally, the flywheel system repeatedly increases and decreases the speed within the range of the rated working rotating speed, and the rated working rotating speed is very wide.

The rigidity of the bearing seat of the flywheel body supported by the rolling bearing is basically constant and is very high, after the structural shape of the flywheel is determined, the resonance point of the flywheel rotor is also determined, the rotating speed corresponding to the resonance point is very high, and the resonance point of the rotor is very easy to appear in the range of the rated rotating speed because the range of the rated rotating speed of the flywheel system is very wide. If a resonance point exists in the rated working rotating speed range of the flywheel system, the rotor can generate resonance phenomenon in the speed increasing and reducing process, and the flywheel body can generate structural damage due to long-time resonance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bearing frame, through install an annular subassembly additional in present bearing frame, low rigidity skeleton wherein makes the rigidity of whole bearing frame reduce to change the resonance point position of rotor, and annular attenuator can increase the damping value of bearing frame, thereby restrain the propagation of rotor vibration, reduce the vibration amplitude of flywheel shell.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is: the utility model provides a bearing seat, includes the bearing frame body and sets up the low rigidity skeleton in the bearing frame body, and the low rigidity skeleton is ring shape, sets up in the bearing outside of treating the installation to with the bearing coaxial core of treating the installation, be provided with the mounting groove that is used for installing the attenuator along its circumference on the low rigidity skeleton, the attenuator is ring shape, inlays to establish in the mounting groove.

Preferably, two mounting grooves are arranged on the low-rigidity framework and arranged in a back-to-back mode, and the two mounting grooves share one groove bottom.

Furthermore, the axial section of one side of the low-rigidity framework is H-shaped, and the groove bottom is a web plate of the low-rigidity framework.

Furthermore, the web plate is provided with a hollow structure.

Alternatively, the low stiffness skeleton is a metal skeleton.

Alternatively, the damper is one of metal rubber, polyurethane, and an O-ring rubber.

The utility model has the advantages that: the utility model discloses structurally increase the low rigidity skeleton of H type and cyclic annular attenuator, two part simple structure, the compactedness is good to hollow out construction through the low rigidity skeleton of adjustment H type and the material of cyclic annular attenuator can form the bearing frame of different rigidity and damping combination, thereby realize the transfer of rotor resonance point.

The utility model discloses a change flywheel bearing frame's rigidity and damping, ensure that the resonance point of flywheel rotor must be outside rated working speed scope, also can restrain the vibration range of rotor simultaneously. Meanwhile, the damping and the rigidity of the bearing seat can be customized by combining the H-shaped metal frameworks in different forms with different annular dampers.

Drawings

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

fig. 2 is a schematic structural view of the low-medium stiffness framework of the present invention;

the labels in the figure are: 1. the bearing seat comprises a bearing seat body, 2, a low-rigidity framework, 201, a mounting groove, 202, a web plate, 203, a hollow structure, 3, a damper, 4, a rotor shaft head, 5 and a rolling bearing.

Detailed Description

The following detailed description of the present invention is provided with reference to the accompanying drawings and examples, but not to be construed as limiting the present invention in any way.

Referring to the attached drawings, in the bearing seat, an annular low-rigidity framework 2 is embedded in an inner hole of a bearing seat body 1, the axis of the low-rigidity framework 2 is coincided with the axis of the bearing seat body 1 and the axis of an installed rolling bearing 5, and the axis of the rolling bearing 5 is coincided with the axis of a rotor shaft head 4 of a flywheel; alternatively, the low rigidity frame 2 is a metal frame, and one axial section thereof is H-shaped, so that two annular mounting grooves 201 are formed, and the two mounting grooves 201 share one groove bottom back to back, so that the groove bottom is the web 202 of the low rigidity frame 2. Because the low rigidity skeleton 2 has set up mounting groove 201, therefore the rigidity of skeleton is far less than the great bearing frame body 1 of thickness to only pass through between the medial surface of low rigidity skeleton 2 and the lateral surface web 202 connects, web 202 adopts behind the design of hollow out construction 203 like this, can further reduce the rigidity of low rigidity skeleton 2, in addition, after the form of adjustment hollow out construction 203, can also further adjust rigidity, just so can customize suitable low rigidity skeleton 2 as required. An annular damper 3 is embedded in the mounting groove 201, the damper 3 can provide different damping according to different materials, and generally, the selectable material is one of metal rubber, polyurethane and an O-shaped rubber ring.

Through selection and matching of the low-rigidity framework 2 and the damper 3, a proper combination form can be selected according to actual conditions, so that the resonance point of the flywheel rotor is ensured to be beyond the range of rated working rotating speed, and the vibration amplitude of the rotor is restrained.

The above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and it should be understood by those of ordinary skill in the art that the embodiments of the present invention can be modified or replaced with equivalents with reference to the above embodiments, and any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are all within the scope of the claims of the present application.

Claims

1. A bearing housing, characterized in that: including the bearing frame body and set up the low rigidity skeleton in the bearing frame body, the low rigidity skeleton is ring shape, sets up in the bearing outside of treating the installation to with the bearing axle center of treating the installation, be provided with the mounting groove that is used for installing the attenuator along its circumference on the low rigidity skeleton, the attenuator is ring shape, inlays to establish in the mounting groove.

2. The bearing housing according to claim 1, wherein: the mounting groove on the low rigidity skeleton is provided with two to be arranged back to back, a tank bottom is shared to two mounting grooves.

3. A bearing housing according to claim 2, wherein: the axial cross section of one side of the low-rigidity framework is H-shaped, and the groove bottom is a web plate of the low-rigidity framework.

4. A bearing housing according to claim 3, wherein: the web is provided with a hollow structure.

5. A bearing housing according to any one of claims 1 to 4, wherein: the low-rigidity framework is a metal framework.

6. The bearing housing according to claim 5, wherein: the damper is one of metal rubber, polyurethane and an O-shaped rubber ring.