CN211046635U

CN211046635U - Generator bearing protective structure

Info

Publication number: CN211046635U
Application number: CN201922201415.6U
Authority: CN
Inventors: 符春飞
Original assignee: WUHU GENERATOR AUTOMOTIVE ELECTRICAL SYSTEMS CO Ltd
Current assignee: WUHU GENERATOR AUTOMOTIVE ELECTRICAL SYSTEMS CO Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-07-17
Anticipated expiration: 2029-12-10

Abstract

The utility model relates to a generator field is a generator bearing protective structure particularly, the generator includes the pivot, rotor, claw utmost point, bearing, end cover and transmission steel wheel have been cup jointed in the pivot, the pivot is equipped with the insulating part who is used for the isolation with bearing hookup location department. The utility model discloses a generator bearing protection structure, which can protect the bearing from electric erosion without changing the existing generator connection structure by arranging a bearing ring and an insulating washer; meanwhile, the insulating washer and the bearing ring can be produced independently, the structure is simple, the installation is convenient, the production cost is low, the effect achieved by using the bearing ring is obvious, and the bearing ring has significance for practical production.

Description

Generator bearing protective structure

Technical Field

The utility model relates to a generator field is a generator bearing protective structure particularly.

Background

The alternator is used as a main power supply part of an automobile, a large amount of static electricity is accumulated when the alternator is operated for a long time, and the bearing is used as a transmission part of the motor, and grease in an inner ring and an outer ring of the bearing is a non-conductive substance.

Therefore, static electricity accumulated in the generator in long-term use gradually generates an electric erosion problem to the balls in the bearing grease through the bearing inner ring, and the bearing fails early for a long time.

Such failure modes are particularly common in long-term operating vehicle models, such as taxis, long-distance freight trains, and the like.

At present, two common modes for solving the problem are provided, one mode is to add a grounding brush at the end of a motor rotating shaft to release generated static electricity after the generated static electricity is grounded through the brush.

One is to insulate the bearing so that static electricity cannot contact the bearing, and the common insulation mode of the bearing is to use an insulation bearing, namely, to plate insulation ceramic on the surface of the inner ring of the bearing, the unit price of the bearing is very high, and the plating layer is easy to wear.

Based on the above problems, in order to solve the problem of electric corrosion of the generator bearing, a structure for protecting the generator bearing is needed at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a protective structure that can be used for the protection of motor bearing.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides a generator bearing protective structure, the generator includes the pivot, rotor, claw utmost point, bearing, end cover and transmission steel wheel have been cup jointed in the pivot, pivot and bearing hookup location department are equipped with the insulating part who is used for keeping apart.

The insulating part comprises a bearing ring which is sleeved on the rotating shaft and arranged in a region between the rotating shaft and the bearing; the insulating ferrule is made of an insulating material.

The bearing ring comprises a ring body, a through hole is formed in the ring body, and a limiting flange is arranged at one end, close to the transmission steel wheel, of the ring body; the horizontal projection of the bearing ring is T-shaped.

The outer diameter of the ferrule body is not larger than the inner diameter of the bearing.

An insulating washer for separating is arranged between the bearing and the claw pole; the insulating washer is sleeved on the rotating shaft, and the side face of the insulating washer is attached to the end part of the bearing.

The insulating gasket comprises a gasket body, and a through hole is formed in the center of the gasket body; the gasket body is sleeved on the rotating shaft through the through hole.

And an avoiding annular groove is formed in one side, close to the bearing, of the gasket body.

The utility model has the advantages that:

the utility model discloses a generator bearing protection structure, which can protect the bearing from electric erosion without changing the existing generator connection structure by arranging a bearing ring and an insulating washer; meanwhile, the insulating washer and the bearing ring can be produced independently, the structure is simple, the installation is convenient, the production cost is low, the effect achieved by using the bearing ring is obvious, and the bearing ring has significance for practical production.

Drawings

The contents of the various figures of the specification and the labels in the figures are briefly described as follows:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the middle bearing ring of the present invention.

Fig. 3 is a schematic structural diagram of the middle insulating washer of the present invention.

The labels in the above figures are:

1. the device comprises a rotating shaft, 2 end covers, 3 bearing rings, 4 transmission steel wheels, 5 bearings and 6 insulating washers.

Detailed Description

The following description of the preferred embodiments of the present invention will be made in further detail with reference to the accompanying drawings.

A generator bearing 5 protection structure comprises a rotating shaft 1, wherein a rotor, a claw pole, a bearing 5, an end cover 2 and a transmission steel wheel 4 are sleeved on the rotating shaft 1, and an insulating part for isolation is arranged at the connecting position of the rotating shaft 1 and the bearing 5; the insulating member may be various, and theoretically, the insulating member may be any member as long as the bearing 5 can be isolated from the rotating shaft 1, and may be an insulating washer, a spacer, a support frame, or the like; as long as the bearing 5 can be isolated from the rotating shaft 1; the problem that static electricity accumulated by long-term use of the generator generates electric corrosion to balls in grease of the bearing 5 through the inner ring of the bearing 5 can be solved through the arrangement of the insulating component.

Preferably, the insulating component in the present invention includes a bearing ring 3, and the bearing ring 3 is sleeved on the rotating shaft 1 and is disposed in the region between the rotating shaft 1 and the bearing 5; the utility model optimally sets the insulating part, the bearing ring 3 of the utility model is sleeved on the rotating shaft 1, the bearing 5 is equivalently sleeved on the bearing ring 3, and the insulating ring is made of insulating material; due to this design, isolation occurs between the shaft 1 and the bearing 5, thereby reducing or avoiding the above-mentioned problems.

Preferably, the bearing ring 3 of the present invention includes a ring body 31, the ring body 31 is provided with a through hole 32, and one end of the ring body 31, which is close to the transmission steel wheel 4, is provided with a limit flange 33; the horizontal projection of the bearing ring 3 is T-shaped; the arrangement of the limiting flanging plays a role in isolating the end part; the side surface of the bearing 5 can be prevented from contacting the end part of the transmission steel wheel 4, and the static electricity on the transmission steel wheel 4 is prevented from being transferred to the bearing 5; meanwhile, the size of the limiting flange 33 is large, a platform structure appears at the joint of the ferrule body 31 and the limiting flange 33, a positioning and limiting effect is achieved, and the bearing ferrule 3 is convenient to install and position.

As preferred, the utility model discloses in the external diameter of lasso body 31 is not more than the 5 internal diameters of bearing, interference problem when having avoided the assembly, in addition as preferred, the utility model discloses well lasso body 31 internal diameter is not less than the junction or lays a pivot diameter, is equipped with spacing rib on the inner wall of cross-under hole 32, and spacing rib and the straight stripe looks adaptation in the pivot 1 play the location simultaneously, can reduce the rotation of the equivalent pivot 1 of lasso body 31, guarantee the stability that bearing 5 and bearing ring 3 are connected.

Preferably, an insulating washer 6 for separating is arranged between the middle bearing 5 and the claw pole; the insulating washer 6 is sleeved on the rotating shaft 1, and the side surface of the insulating washer 6 is attached to the end part of the bearing 5; the insulating washer 6 is arranged to also play a role in isolation; the utility model discloses set up insulating washer 6 and still use in order to match the bearing ring 3, in the above, we know, the bearing ring 3 tip after optimizing has spacing turn-ups 33, and the setting of spacing turn-ups 33 can be used for blocking the contact of bearing 5 and transmission steel wheel 4; one side of the bearing 5 close to the claw pole is not provided with a limiting flange 33, so that the insulating washer 6 is added to avoid the static transmission caused by the contact between one end of the bearing 5 close to the claw pole and the adjacent part of the bearing; the utility model discloses an insulating washer 6, which comprises a washer body 61, wherein a cross-connecting through hole 62 is arranged at the center of the washer body 61; the gasket body 61 is sleeved on the rotating shaft 1 through a through hole 62; the gasket body 61 is sleeved on the rotating shaft 1 through the through hole 62; in addition, in order to ensure the installation stability of the insulating gasket, the insulating gasket is required to be pressed with the straight section of the extending end of the rotating shaft 1.

Preferably, the openings at the two ends of the through hole 62 are larger than the opening at the middle part of the through hole, so as to facilitate the assembly of the insulating gasket.

Preferably, in the present invention, an avoiding ring groove 63 is provided on one side of the gasket body 61 close to the bearing 5; the arrangement of the escape ring groove 63 plays an escape role, and the purpose is to avoid the influence on the normal rotation of the bearing 5 due to the arrangement of the gasket body 61.

Obviously the specific implementation of the present invention is not limited by the above-mentioned manner, and various insubstantial improvements made by the method concept and technical solution of the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a generator bearing protective structure, the generator includes the pivot, cup jointed rotor, claw utmost point, bearing, end cover and transmission steel wheel in the pivot, its characterized in that, pivot and bearing hookup location department are equipped with the insulating part who is used for keeping apart.

2. A generator bearing guard structure according to claim 1, wherein the insulating member comprises a bearing ring fitted over the shaft and disposed in a region between the shaft and the bearing; the bearing ring is made of an insulating material.

3. A generator bearing protection structure as claimed in claim 2, wherein the bearing ring comprises a ring body, a through hole is formed in the ring body, and a limiting flange is arranged at one end of the ring body, close to the transmission steel wheel; the horizontal projection of the bearing ring is T-shaped.

4. A generator bearing guard structure according to claim 3, wherein the outer diameter of the ring body is no greater than the inner diameter of the bearing.

5. A generator bearing guard structure according to claim 1, wherein an insulating washer is provided between the bearing and the claw pole for isolating; the insulating washer is sleeved on the rotating shaft, and the side face of the insulating washer is attached to the end part of the bearing.

6. A generator bearing guard structure as claimed in claim 5, wherein the insulating washer includes a washer body with a through-penetration hole at the centre thereof; the gasket body is sleeved on the rotating shaft through the through hole.

7. A generator bearing guard structure as claimed in claim 6, wherein the washer body is provided with an escape ring groove on the side adjacent the bearing.