CN201898404U - Motor bearing - Google Patents

Abstract

The utility model discloses a motor bearing, which comprises a bearing bush, a bearing support for supporting the bearing bush in a central supporting manner, and at least two oil rings embedded in an upper half groove of the bearing bush and in contact with an excircle of a motor rotating shaft, wherein a rolling ball bearing is arranged at one end of the bearing bush; and an alloy layer is cast at an inner hole of the bearing bush. By adopting the motor bearing, the adjusting capability of the bearing bush to unbalance resulted from shaft deflection is enhanced, the quantity of the oil rings is increased to improve the use efficiency of lubricating oil, the running precision and the running stability of the motor rotating shaft are improved owing to the additionally arranged rolling ball bearing, part of axial thrust can be effectively borne, and the cost is lowered owing to the removal of an external oil feeding device. Therefore, the motor bearing provided by the utility model has good adjusting capability, good lubricating effect, high stability and safety during high-speed running of a motor, low cost and long service life.

Description

A kind of motor bearings

[technical field]

The utility model relates to bearing, especially motor bearings.

[technical background]

Bearing is the crucial parts of a class in power plant's accessory, and motor bearings is a big class of bearing, and its core technology is the cooperation of bearing shell and the cooling of bearing.The structure of existing common electric machine bearing mainly comprises bearing shell 1 as shown in Figure 1, 2, is inlaid in the oil ring 2 that contacts with the machine shaft cylindrical in bearing shell 1 first groove, casts in the alloy-layer 3 that the bearing shell endoporus contacts with rotating shaft, supports the bearing pedestal 4 of bearing shell 1.Bearing shell 1 adopts bilateral pair of spherical support mode to cooperate with bearing pedestal 4, and the quantity of oil ring 2 is 1, and alloy-layer 3 is the plain bearing alloy.Bilateral pair of spherical support mode is limited to the unbalance regulating power that the amount of deflection owing to axle causes in this structure, and oil ring 2 has only 1, and the lubricating oil utilization ratio is low, and needs outside fueller, will increase cost like this.The common bearing metal performance of the endoporus of bearing shell 1 is general.Said structure is very big to the influence in normal useful life of bearing, influence bearing useful life, even so and influences useful life of whole motor.

[utility model content]

The purpose of this utility model is exactly in order to solve problems of the prior art, propose a kind of motor bearings, not only can improve lubricant effect, smoothness and fail safe when the raising motor runs up, prolong the useful life of bearing and whole motor product, and can reduce cost.

For achieving the above object, the utility model patent has proposed a kind of motor bearings, comprise bearing shell, adopt the center support mode support bearing shell bearing pedestal, be embedded in first groove of bearing shell and at least 2 oil rings of machine shaft cylindrical contact, one end of described bearing shell is provided with rolling ball bearing, and the endoporus place of described bearing shell is cast with alloy-layer.

As preferably, the quantity of described oil ring is 2.

As preferably, have two grooves on the described bearing shell, described 2 oil rings are placed on respectively in two grooves, have two grooves placing two oil rings on the bearing shell, have reduced the weight of bearing shell like this, have reduced cost.

As preferably, described center support mode is the center position of the contact-making surface of bearing pedestal and bearing shell at bearing pedestal, unbalancely has a good regulating power to what shaft deflection caused.

As preferably, described rolling ball bearing adopts the zanjon rolling ball bearing, simple in structure, easy to use, need not refuel over a period to come in the work, when main shaft has self-regulation ability when installing or being subjected to bending that load causes, inclination, when being subjected to radial load, can bear bi-directional axial load.

The beneficial effect of the utility model patent: the utility model has improved the unbalance regulating power of bearing shell to causing owing to shaft deflection, the quantity that increases oil ring has then improved the utilization ratio of lubricating oil, the rolling bearing that increases newly improves the precision of machine shaft operation and smoothness, and can bear a part of axial thrust effectively, the subduction of outside fueller has reduced cost.The utlity model has the regulating power height, high lubricating effect, the smoothness during the motor high-speed cruising and safe, cost is low, characteristics such as long service life.

[description of drawings]

Fig. 1 is the structural representation of common electric machine bearing in the prior art;

Fig. 2 is the D-D cutaway view of Fig. 1;

Fig. 3 is the structural representation of a kind of motor bearings of the utility model;

Fig. 4 is the A-A cutaway view of Fig. 3;

Fig. 5 is the stereogram of a kind of motor bearings of the utility model.

[embodiment]

Shown in Fig. 3,4,5, a kind of motor bearings, comprise bearing shell 5, adopt the center support mode support bearing shell 5 bearing pedestal 6, be embedded in bearing shell 5 first grooves and at least 2 oil rings 7 of machine shaft cylindrical contact, one end of described bearing shell 5 is provided with rolling ball bearing 8, and the endoporus place of described bearing shell 5 is cast with alloy-layer 9.In the present embodiment, the quantity of described oil ring 7 adopts 2.Have two grooves on the described bearing shell 5, described 2 oil rings are placed on respectively in two grooves, have two grooves placing two oil rings on the bearing shell 5, have reduced the weight of bearing shell 5 like this, have reduced cost.Described center support mode is a bearing pedestal 6 and the center position of the contact-making surface of bearing shell 5 at bearing pedestal 6, unbalancely has a good regulating power to what shaft deflection caused.Described rolling ball bearing 8 adopts the zanjon rolling ball bearing, the zanjon rolling ball bearing is simple in structure, easy to use, need not refuel over a period to come in the work, when main shaft has self-regulation ability when installing or being subjected to bending that load causes, inclination, when being subjected to radial load, can bear bi-directional axial load.

This new structure does not need to establish outside fueller.The weight of bearing shell 5 reduces, the load that has also alleviated machine shaft when saving cost, and the mode that adopts center support that cooperates of bearing shell 5 and bearing pedestal 6 unbalancely has a self-adjusting ability more flexibly for what caused by shaft deflection.Increased the quantity of oil ring 7, lubricating oil can also form the oil film lubricate between two oil rings 7, and the utilization ratio of the lubricating oil of rotating shaft also is enhanced like this.Rotation precision and smoothness when the rolling bearing 8 that increases can improve the machine shaft high-speed cruising effectively, and bear certain axial thrust.The alloy-layer 9 of bearing shell 5 endoporus casting has resistant to elevated temperatures characteristics, also can guarantee the bearing safe handling under the situation of machine shaft operation generation high temperature.The said structure combined influence, New-type electric machine bearing self-adjusting ability height, high lubricating effect, the security performance height, cost is low.

The foregoing description is to explanation of the present utility model, is not to qualification of the present utility model, any scheme after the utility model simple transformation is all belonged to protection range of the present utility model.

Claims (5)

1. motor bearings, it is characterized in that: comprise bearing shell (5), adopt the center support mode support bearing shell (5) bearing pedestal (6), be embedded in first groove of bearing shell (5) and at least 2 oil rings (7) of machine shaft cylindrical contact, one end of described bearing shell (5) is provided with rolling ball bearing (8), and the endoporus place of described bearing shell (5) is cast with alloy-layer (9).

2. a kind of motor bearings as claimed in claim 1 is characterized in that: the quantity of described oil ring (7) is 2.

3. a kind of motor bearings as claimed in claim 2 is characterized in that: have two grooves on the described bearing shell (5), described 2 oil rings (7) are placed on respectively in two grooves.

4. a kind of motor bearings as claimed in claim 1 is characterized in that: described center support mode is the center position of the contact-making surface of bearing pedestal (6) and bearing shell (5) in bearing pedestal (6).

5. as each described a kind of motor bearings in the claim 1～4, it is characterized in that: described rolling ball bearing (8) adopts the zanjon rolling ball bearing.

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