CN208890533U - A kind of electric corrosion prevention device suitable for bearing - Google Patents

Abstract

The utility model relates to a kind of electric corrosion prevention devices suitable for bearing, it include: shaft, elastic conducting electric circle and bearing chamber, shaft is horizontally installed in bearing chamber, limiting groove is offered in shaft, be provided with elastic conducting electric circle between shaft and bearing chamber, the elastic conducting electric circle is the quoit with opening, and two ends of elastic conducting electric circle bend inwards after tilt, two ends of elastic conducting electric circle are installed in limiting groove, and the outer circle arc side of elastic conducting electric circle is in contact with bearing chamber interior walls.The utility model is suitable for plain bearing, has implementation cost low, carries out that special transformation, overall structure be simple, overall operation high reliablity without the structure to existing bearing, can solve the generation of bearing galvanic corrosion phenomenon, improve the service life of bearing.

Description

A kind of electric corrosion prevention device suitable for bearing

Technical field:

The utility model belongs to technical field of motors, and in particular to a kind of electric corrosion prevention device suitable for bearing.

Background technique:

Bearing is the important component cooperated in motor with shaft, during motor operating, is mounted in shaft Bearing inner race and outer ring due to Bearing inner lubricating grease influence and cannot be sufficiently conductive, so the shape before inner ring and outer ring At potential difference, so that generate electric discharge between roller and Internal and external cycle in bearing, so as to cause the galvanic corrosion of bearing internal external circle and roller, Cause bearing damage.Although disclosing a kind of Anti electrolytic corrosion bearing application No. is 201020685199.3, the patent is outside bearing Conductive elastic ring is equipped between circle and inner ring, elastic ring is contacted with outer ring and inner ring, and bearing is equipped with to be positioned for elastic ring Limiting section, elastic ring is kept in contact state by elastic force and outer ring and inner ring, but the patent is disadvantageous in that, the axis Hold the bearing for special construction, need the bearing development period of a period of time, so as to cause bearing purchase cost than common Conventional bearings are high.

Utility model content:

The utility model is to overcome drawbacks described above, provides a kind of electric corrosion prevention device suitable for bearing, which is not required to The bearing of special construction is wanted, structure is simple, good reliability, and implementation cost is low, can effectively prevent bearing galvanic corrosion, application prospect It is good.

The technical solution adopted in the utility model is: a kind of electric corrosion prevention device suitable for bearing, comprising: shaft, bullet Property conductive ring and bearing chamber, shaft are horizontally installed in bearing chamber, limiting groove are offered in shaft, in shaft and bearing chamber Between be provided with elastic conducting electric circle, the elastic conducting electric circle is the quoit with opening, and two ends of elastic conducting electric circle It is tilted after bending inwards, two ends of elastic conducting electric circle are installed in limiting groove, the outer circle arc side and axis of elastic conducting electric circle Chamber interior walls are held to be in contact.

Preferably, the opening angle of the elastic conducting electric circle is α, and α is less than 90 degree.

Preferably, the elastic conducting electric circle is wire or metal tape.

The beneficial effects of the utility model are:

1, the utility model is implemented as low first, is carried out special transformation without the structure to existing bearing, is saved Time development cycle of buying hour, i.e. special construction bearing is long, while reducing the purchase cost of special construction bearing；Its Secondary, overall structure is simple, only by the way that elastic conducting electric circle is arranged between bearing chamber and shaft and to the simple fluting of shaft Realize the identical effect of special construction bearing, the bearing without outsourcing special construction；Finally, overall operation high reliablity, elasticity Conductive ring is clamped between the limiting groove of shaft and bearing chamber always by the elastic force of itself, when equipment has drain conditions hair When raw, electric current will not reach outer ring through the roller of bearing from the inner ring of bearing, therefore can solve the generation of bearing galvanic corrosion phenomenon, Improve the service life of bearing；

2, in order to avoid conductive ring elastic in the rotation process of shaft will not clamping stagnation, the opening angle of elastic conducting electric circle is not It should be greater than 90 degree, and two to bend inwards end is located at outside limiting groove, i.e., end tilts.

Detailed description of the invention:

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the cross-sectional view of A-A in Fig. 1；

Wherein: 1 shaft, 11 limiting grooves, 2 bearings, 21 inner rings, 22 outer rings, 23 rollers, 3 elastic conducting electric circles, 31 external arcs Side, 32 bend inwards portion, 4 bearing chambers.

Specific embodiment:

As depicted in figs. 1 and 2, the utility model is a kind of electric corrosion prevention device suitable for bearing, comprising: shaft 1, elasticity Conductive ring 3 and bearing chamber 4, shaft 1 are horizontally installed in bearing chamber 4, and limiting groove 11 is offered in shaft 1, shaft 1 with Elastic conducting electric circle 3 is provided between bearing chamber 4, elastic conducting electric circle 3 is installed on shaft 1 and bearing chamber by limiting groove 11 always Between 4, the elastic conducting electric circle 3 is the quoit with opening, and elastic conducting electric circle 3 can be wire, is also possible to metal Band, in order to avoid conductive ring 3 elastic in the rotation process of shaft 1 will not clamping stagnation, the opening angle of the elastic conducting electric circle 3 is α, and α, less than 90 degree, elastic conducting electric circle 3 includes outer circle arc side 31 and the portion 32 that bends inwards connecting with 31 both ends of outer circle arc side, And the end in two portions 32 that bend inwards tilts, the portion 32 that bends inwards of two of elastic conducting electric circle 3 is installed on limiting groove 11 Interior, the outer circle arc side 31 of elastic conducting electric circle 3 is remained with 4 inner wall of bearing chamber to be contacted.

The course of work:

When installation, first elastic conducting electric circle 3 is mounted in the limiting groove 11 in shaft 1, then bearing 2, institute are installed again The bearing 2 of installation is without the plain bearing 2 Jing Guo special transformation, after bearing 2 is installed, the external arc of elastic conducting electric circle 3 Side 31 is in contact with the inner wall of bearing chamber 4, two of elastic conducting electric circle 3 bend inwards part be in contact with shaft 1, and two to The end of inner bending part tilts.When shaft 1 rotates, elastic conducting electric circle 3 is remained to be in contact with shaft 1 and bearing chamber 4.When When equipment has drain conditions generation, elastic conducting electric circle 3 keeps the current potential between the inner ring 21 of bearing 2 and outer ring 22 equal, does not have Electric current reaches outer ring 22 through the roller 23 of bearing 2 from the inner ring 21 of bearing 2, therefore the occurrence of can solve 2 galvanic corrosion of bearing.

The preferable specific embodiment of the above, only the utility model, these specific embodiments are all based on this Different implementations under utility model general idea, and the protection scope of the utility model is not limited thereto, it is any ripe Know those skilled in the art within the technical scope disclosed by the utility model, any changes or substitutions that can be easily thought of, all It should cover and be within the protection scope of the utility model.Therefore, the protection scope of the utility model should be with claims Subject to protection scope.

Claims (3)

1. a kind of electric corrosion prevention device suitable for bearing characterized by comprising shaft (1), elastic conducting electric circle (3) and bearing Room (4), shaft (1) are horizontally installed in bearing chamber (4), and limiting groove (11) are offered on shaft (1), shaft (1) with It is provided between bearing chamber (4) elastic conducting electric circle (3), the elastic conducting electric circle (3) is the quoit with opening, and elastic conducting Two ends of electric circle (3) tilt after bending inwards, and two ends of elastic conducting electric circle (3) are installed in limiting groove (11), The outer circle arc side (31) of elastic conducting electric circle (3) is in contact with bearing chamber (4) inner wall.

2. a kind of electric corrosion prevention device suitable for bearing as described in claim 1, it is characterised in that: the elastic conducting electric circle (3) opening angle is α, and α is less than 90 degree.

3. a kind of electric corrosion prevention device suitable for bearing as described in claim 1, it is characterised in that: the elastic conducting electric circle It (3) is wire or metal tape.