CN105388404A - Insulated bearing electric testing tool - Google Patents
Insulated bearing electric testing tool Download PDFInfo
- Publication number
- CN105388404A CN105388404A CN201510812661.9A CN201510812661A CN105388404A CN 105388404 A CN105388404 A CN 105388404A CN 201510812661 A CN201510812661 A CN 201510812661A CN 105388404 A CN105388404 A CN 105388404A
- Authority
- CN
- China
- Prior art keywords
- bearing
- insulation
- inner ring
- outer ring
- frock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses an insulated bearing electric testing tool which is applied to electric testing of an insulated bearing. The tool is in a ring shape and comprises a conductive inner ring and an insulated outer ring. The insulated outer ring covers the outer side of the conductive inner ring. The insulated outer ring is provided with a wire installation hole which enables the outer part of the insulated outer ring to be communicated with the conductive inner ring. When a motor bearing is subjected to an electric test, the bearing is installed in the ring-shaped tool, the conductive inner ring of the tool is in contact with the bearing, a connection wire is connected to the conductive inner ring through the wire installation hole and is in electric contact with the conductive inner ring, and in this way, the insulated bearing is electrically tested.
Description
Technical field
The present invention relates to Bearing testing technical field, particularly relate to a kind of insulation bearing electrical testing frock.
Background technology
Insulation bearing refers to be coated with insulation course at bearing outer ring, and as dielectric ceramic layer, the existence of insulation course can alleviate the electrocorrosion effect of induction current to bearing, improves the serviceable life of bearing.
When detecting the electrocorrosion intensity of motor bearings, the electric current flowing through bearing be tested, comprising the current waveform and current maxima, the effective value etc. that obtain and flow through bearing.Therefore, design a kind of electrical testing frock being applied to insulation bearing, being convenient to carry out electrical testing to insulation bearing becomes necessity.
Summary of the invention
The object of this invention is to provide a kind of insulation bearing electrical testing frock, be applied to the electrical testing of insulation bearing.
For achieving the above object, the present invention puies forward following technical scheme:
A kind of insulation bearing electrical testing frock, described frock is annular;
Comprise electric conductivity inner ring and insulation outer ring, described insulation outer ring is coated on the outside of described electric conductivity inner ring, and described insulation outer ring is provided with the wire mounting hole from ft connection to described electric conductivity inner ring.
Alternatively, the internal diameter of described frock equals the external diameter of tested bearing.
Alternatively, the width of described electric conductivity inner ring is more than or equal to 80% of the outer ring width of tested bearing.
Alternatively, the ratio of the radial thickness of described insulation outer ring and the thickness of insulating layer of tested bearing is more than or equal to 10:1.
Alternatively, described wire mounting hole is located on a side end face of described insulation outer ring.
Alternatively, described wire mounting hole is be located at groove on a side end face of described insulation outer ring, that be communicated to described electric conductivity inner ring.
From such scheme, a kind of insulation bearing electrical testing frock provided by the present invention, ringwise, comprises electric conductivity inner ring and insulation outer ring, insulation outer ring is coated on the outside of electric conductivity inner ring, and insulation outer ring is provided with the wire mounting hole from ft connection to electric conductivity inner ring.When making electrical testing to motor shaft, bearing being loaded in annular frock, frock electric conductivity inner ring and bearing touch, connection wire is connected to electric conductivity inner ring by wire mounting hole, with the electrical contact of electric conductivity inner ring, to carry out electrical testing to insulation bearing.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of a kind of insulation bearing electrical testing frock that Fig. 1 provides for the embodiment of the present invention.
Embodiment
Technical scheme in the present invention is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
Please refer to Fig. 1, the electrical testing frock of a kind of insulation bearing that the embodiment of the present invention provides, described frock is annular;
Comprise electric conductivity inner ring 10 and insulation outer ring 11, described insulation outer ring 11 is coated on the outside of described electric conductivity inner ring 10, and described insulation outer ring 11 is provided with the wire mounting hole 12 from ft connection to described electric conductivity inner ring 10.
When carrying out electrical testing, loaded by insulation bearing in annular frock, frock electric conductivity inner ring 10 and bearing touch, be connected to electric conductivity inner ring by connection wire by wire mounting hole 12, with electric conductivity inner ring 10 electrical contact, thus can carry out electrical testing to insulation bearing.
Described electrical testing frock is applied particularly to the testing current to motor bearings, when testing, motor bearings is loaded in annular frock, the electric conductivity inner ring of frock contacts with the outer ring insulation course of bearing, motor bearings and frock are together arranged on the bearing seat of electric motor end cap, connect wire and be connected to electric conductivity inner ring by the wire mounting hole on insulation outer ring, be electrically connected with electric conductivity inner ring, the other end connecting wire is drawn by the screw on electric motor end cap, be connected with testing tool, realize the testing current to motor bearings, can testing of electric motors run time shaft current change.Now, due to frock and bearing combine after its diameter be greater than the diameter of single bearing, so will transform according to frock external diameter the bearing seat of electric motor end cap.
Particularly, the internal diameter of described electrical testing frock equals the external diameter of tested bearing, and tested like this bearing can just in time load in frock, and the electric conductivity inner ring 10 of frock can just in time be contacted with the outer ring of tested bearing.
Frock insulation outer ring 11 is coated on the outside of electric conductivity inner ring 10, and inside frock, electric conductivity inner ring 10 will exceed the end limit of insulation outer ring 11, and make bearing like this after loading frock, the electric conductivity inner ring 10 of frock can contact well with bearing outer ring.Ensure electrical connectivity.
In the present embodiment, the wire mounting hole 12 on frock insulation outer ring is arranged on a side end face of insulation outer ring 11, and shown in figure 1, described wire mounting hole 12 is specially the groove being communicated to electric conductivity inner ring on the side end face being located at insulation outer ring.
For insulation bearing, insulation course is coated with at insulation bearing outer peripheral surface, test insulation bearing flow through electric current time, because the existence of insulation course, bearing outer ring and bearing seat is made to form capacitance structure, this capacitance structure can affect shaft current, and adopt the electrical testing frock described in the present embodiment to carry out electrical testing to insulation bearing, bearing and bearing seat can effectively be isolated by the insulating outer layer of frock, capacitance structure can be avoided the formation of, thus the shaft current making test obtain is more accurate, ensure the accuracy to shaft current test and reliability.
In the present embodiment, the ratio of the radial thickness of the insulation outer ring of described electrical testing frock and the thickness of insulating layer of tested bearing is more than or equal to 10:1, the radial thickness of frock insulating outer layer is enough thick, with isolation bearing outer ring and bearing seat effectively, avoid forming capacitance structure between and affecting testing current.
In the present embodiment, the width of electric conductivity inner ring 10 is more than or equal to 80% of the outer ring width of tested bearing, such frock electric conductivity inner ring can cover the area of tested bearing outer ring more than 80%, thus ensure that electric conductivity inner ring contacts with bearing, effectively to improve test accuracy and measuring accuracy.
Above a kind of insulation bearing electrical testing frock provided by the present invention is described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (6)
1. an insulation bearing electrical testing frock, is characterized in that, described frock is annular;
Comprise electric conductivity inner ring and insulation outer ring, described insulation outer ring is coated on the outside of described electric conductivity inner ring, and described insulation outer ring is provided with the wire mounting hole from ft connection to described electric conductivity inner ring.
2. insulation bearing electrical testing frock as claimed in claim 1, it is characterized in that, the internal diameter of described frock equals the external diameter of tested bearing.
3. insulation bearing electrical testing frock as claimed in claim 1, it is characterized in that, the width of described electric conductivity inner ring is more than or equal to 80% of the outer ring width of tested bearing.
4. insulation bearing electrical testing frock as claimed in claim 1, it is characterized in that, the ratio of the radial thickness of described insulation outer ring and the thickness of insulating layer of tested bearing is more than or equal to 10:1.
5. the insulation bearing electrical testing frock as described in any one of claim 1-4, is characterized in that, described wire mounting hole is located on a side end face of described insulation outer ring.
6. insulation bearing electrical testing frock as claimed in claim 5, it is characterized in that, described wire mounting hole is be located at groove on a side end face of described insulation outer ring, that be communicated to described electric conductivity inner ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510812661.9A CN105388404A (en) | 2015-11-19 | 2015-11-19 | Insulated bearing electric testing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510812661.9A CN105388404A (en) | 2015-11-19 | 2015-11-19 | Insulated bearing electric testing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105388404A true CN105388404A (en) | 2016-03-09 |
Family
ID=55420899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510812661.9A Pending CN105388404A (en) | 2015-11-19 | 2015-11-19 | Insulated bearing electric testing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105388404A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114152438A (en) * | 2021-11-15 | 2022-03-08 | 中车永济电机有限公司 | Dynamic testing device suitable for insulation performance of multi-model rolling bearings |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1576864A (en) * | 2003-06-30 | 2005-02-09 | Ntn株式会社 | Insulation resistance tester for insulation bearing and detecting method |
| CN1576860A (en) * | 2003-06-26 | 2005-02-09 | Ntn株式会社 | Insulating property test machine for insulation bearing |
| JP4369690B2 (en) * | 2003-06-26 | 2009-11-25 | Ｎｔｎ株式会社 | Insulation performance testing machine for insulated bearings |
| CN101626181A (en) * | 2009-08-17 | 2010-01-13 | 南车株洲电力机车有限公司 | Method for manufacture insulating bearing housing of electric motor and insulating bearing housing |
| CN201590705U (en) * | 2009-08-17 | 2010-09-22 | 南车株洲电力机车有限公司 | Insulated bearing sleeve used for motor |
| CN102497071A (en) * | 2011-11-29 | 2012-06-13 | 中电电机股份有限公司 | Assembly structure of insulating rolling bearing |
| CN102859214A (en) * | 2010-04-16 | 2013-01-02 | 谢夫勒科技股份两合公司 | Electrically insulating bearing ring, in particular for a roller bearing |
| CN103780001A (en) * | 2012-10-22 | 2014-05-07 | 通用电气公司 | Insulated bearing ring |
-
2015
- 2015-11-19 CN CN201510812661.9A patent/CN105388404A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1576860A (en) * | 2003-06-26 | 2005-02-09 | Ntn株式会社 | Insulating property test machine for insulation bearing |
| JP4369690B2 (en) * | 2003-06-26 | 2009-11-25 | Ｎｔｎ株式会社 | Insulation performance testing machine for insulated bearings |
| CN1576864A (en) * | 2003-06-30 | 2005-02-09 | Ntn株式会社 | Insulation resistance tester for insulation bearing and detecting method |
| CN101626181A (en) * | 2009-08-17 | 2010-01-13 | 南车株洲电力机车有限公司 | Method for manufacture insulating bearing housing of electric motor and insulating bearing housing |
| CN201590705U (en) * | 2009-08-17 | 2010-09-22 | 南车株洲电力机车有限公司 | Insulated bearing sleeve used for motor |
| CN102859214A (en) * | 2010-04-16 | 2013-01-02 | 谢夫勒科技股份两合公司 | Electrically insulating bearing ring, in particular for a roller bearing |
| CN102497071A (en) * | 2011-11-29 | 2012-06-13 | 中电电机股份有限公司 | Assembly structure of insulating rolling bearing |
| CN103780001A (en) * | 2012-10-22 | 2014-05-07 | 通用电气公司 | Insulated bearing ring |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114152438A (en) * | 2021-11-15 | 2022-03-08 | 中车永济电机有限公司 | Dynamic testing device suitable for insulation performance of multi-model rolling bearings |
| CN114152438B (en) * | 2021-11-15 | 2024-01-23 | 中车永济电机有限公司 | Dynamic testing device suitable for insulation performance of multi-type rolling bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160309 |
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| RJ01 | Rejection of invention patent application after publication |