CN202946566U - Electric isolation rotary shaft device - Google Patents
Electric isolation rotary shaft device Download PDFInfo
- Publication number
- CN202946566U CN202946566U CN 201220661700 CN201220661700U CN202946566U CN 202946566 U CN202946566 U CN 202946566U CN 201220661700 CN201220661700 CN 201220661700 CN 201220661700 U CN201220661700 U CN 201220661700U CN 202946566 U CN202946566 U CN 202946566U
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- bearing
- rotating shaft
- contact
- ceramic dielectric
- sintered ceramic
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Abstract
The utility model provides an electric isolation rotary shaft device comprising a rotary shaft (1), a bearing (2) and a bearing fixing piece, wherein a contact face between the rotary shaft (1) and the bearing (2), and a contact face between the bearing (2) and the bearing fixing piece are provided with ceramic insulating isolation layers. According to the electric isolation rotary shaft device disclosed by the utility model, the electric isolation can be achieved and a manufacturing process is simple; and a novel electric rotary system has the advantages of good wear resistance, good insulating performance, long service life, high reliability, and safety and durability.
Description
Technical field
The utility model relates to the mechanical transmissioning technology field, relates in particular to a kind of being applied in electrical system, can realize the turning gear of electrical isolation.
Background technique
Can be applied to turning gear in electrical system, electric locomotive operation as long distance, can't guarantee that it is uniform straight line that grid line sets up, this just requires the transmission of electricity of electric locomotive to bend stable the contacting of graphite slide plate energy that energy self can keep electrical network and transmission of electricity to bend in dynamically, and this just needs to increase turning gear; Turning gear comprises rotating shaft and bearing, and it is worked under the environment of forceful electric power, and this has just easily brought the electro erosion problem of bearing, and the electro erosion meeting of bearing causes damage of bearings and even whole pantograph operational failure.
At present, a kind of turning gear mode is to use the insulating resin mixture to make the turning gear of isolation layer, although processing is simple, but isolation layer is because of easily aging, poor to metal adhesion, although can reach the effect of insulation, not wear-resisting easy breakage within certain spreadable life, affect the working life of electric rotating shaft system, also have the hidden danger of safety.
Another kind of turning gear mode is ceramic bearing, has excellent electrical property, well wear resistance.But it is because of difficult processing, and expensive, the thermal expansion coefficient difference of ceramic bearing and metal shaft is very large, and it is equipped difficult to exist; And the ceramic bearing poor toughness, there is the risk of total failure for the electrical equipment of dynamic operation condition under HI high impact.
The model utility content
The purpose of this utility model is to provide a kind of electrical isolation turning gear, can realize electrical isolation, and manufacturing process is simple, and wear resistance is good, good insulation preformance, the life-span is long, reliability is high, the Novel electric cyclostrophic axle system of safety durable.
The purpose of this utility model is achieved through the following technical solutions:
A kind of electrical isolation turning gear comprises rotating shaft 1, bearing 2 and bearing fixed block, and the surface of contact between the surface of contact that described rotating shaft 1 and bearing are 2 and bearing 2 and bearing fixed block is equipped with the ceramic insulation separation layer.
Between the surface of contact that described rotating shaft 1 and bearing are 2 at the surperficial direct spraying of rotating shaft 1 or sintered ceramic dielectric isolation layer; Surface of contact between described bearing 2 and bearing fixed block is at bearing fixed block surface direct spraying or sintered ceramic dielectric isolation layer.
Described bearing fixed block comprises the shaft shoulder 11 and pressure ring 4 of rotating shaft 1; Interior ring one side of bearing 2 contacts with the shaft shoulder 11, and opposite side is located fixing by pressure ring 4; Between the surface of contact of the described shaft shoulder 11 and bearing 2 at the surperficial direct spraying of the shaft shoulder 11 or sintered ceramic dielectric isolation layer; Be stupalith at the surperficial direct spraying of pressure ring 4 or sintered ceramic dielectric isolation layer or described pressure ring 4 between the surface of contact of described pressure ring 4 and bearing 2.
Described electrical isolation turning gear also comprises distance bushing 3, and distance bushing 3 is located at 2, rotating shaft 1 and bearing, at outer surface and/or internal surface spraying or the sintered ceramic dielectric isolation layer of distance bushing 3.
Described distance bushing 3 comprises the isolating ring 31 of the ring interstation of the interior ring exterior edge face of being located at bearing 2 and rotating shaft 1; The outer surface of isolating ring 31 and/or internal surface spraying or sintered ceramic dielectric isolation layer.
The thickness of described spraying or sintered ceramic dielectric isolation layer is at 0.1mm～10mm.
Can be found out by the technological scheme that above-mentioned the utility model provides, the electrical isolation turning gear that the utility model embodiment provides, can realize electrical isolation, manufacturing process is simple, and wear resistance is good, good insulation preformance, the life-span is long, reliability is high, the Novel electric cyclostrophic axle system of safety durable.
Description of drawings
The structural representation of the electrical isolation turning gear that Fig. 1 provides for the utility model embodiment one;
The structural representation of the electrical isolation turning gear that Fig. 2 provides for the utility model embodiment one;
The structural representation of the electrical isolation turning gear that Fig. 3 provides for the utility model embodiment one.
In figure: 1, rotating shaft, 11, the shaft shoulder, 2, bearing, 3, distance bushing, 31, isolating ring, 4, pressure ring, 5, sleeve, 6, nut.
Embodiment
The below will be described in further detail the utility model embodiment.
Embodiment one
As shown in Figure 1, a kind of electrical isolation turning gear of the present utility model comprises rotating shaft 1, bearing 2 and bearing fixed block, and what contact with bearing 2 in concrete bearing fixed block comprises sleeve 5 and the shaft shoulder 11, a fixation comprise nut 6; Interior ring one side of bearing 2 contacts with the shaft shoulder 11, and opposite side is by sleeve 5 location, and nut 6 is fixing; Can certainly adopt other known mode to fix, are all protection domains of the present utility model.
In order to realize electrical isolation, this example is that the surface of contact of 2, described rotating shaft 1 and bearing and the surface of contact between bearing 2 and bearing fixed block are equipped with the ceramic insulation separation layer.The part that in figure, thick line represents is exactly the ceramic insulation separation layer, and in fact 5, sleeve needs internal surfaces to be provided with the ceramic insulation separation layer with the side that contacts with bearing 2 to get final product, be also protection domain of the present utility model.
In this example.Between the surface of contact that described rotating shaft 1 and bearing are 2 at the surperficial direct spraying of rotating shaft 1 or sintered ceramic dielectric isolation layer; The shaft part that namely coordinates with bearing 2 in rotating shaft 1 and the shaft shoulder on right side 11 end faces spraying or sintered ceramic dielectric isolation layers.
Simultaneously, the surface of contact between described bearing 2 and bearing fixed block is at bearing fixed block surface direct spraying or sintered ceramic dielectric isolation layer.Namely spraying or sintered ceramic dielectric isolation layer on sleeve 5 surfaces.
Embodiment two
As shown in Figure 2, a kind of electrical isolation turning gear of the present utility model comprises rotating shaft 1, bearing 2 and bearing fixed block, and what contact with bearing 2 in concrete bearing fixed block comprises pressure ring 4 and the shaft shoulder 11, and that plays fixation comprises nut 6 and sleeve 5; Interior ring one side of bearing 2 contacts with the shaft shoulder 11, and opposite side is by sleeve 5 and pressure ring 4 location, and nut 6 is fixing; Can certainly adopt other known mode to fix, are all protection domains of the present utility model.
In order to realize electrical isolation, this example is that the surface of contact of 2, described rotating shaft 1 and bearing and the surface of contact between bearing 2 and bearing fixed block are equipped with the ceramic insulation separation layer.The part that in figure, thick line represents is exactly the ceramic insulation separation layer, and in fact 4 of pressure rings need internal surfaces to be provided with the ceramic insulation separation layer with the side that contacts with bearing 2 to get final product, and perhaps, it adopts stupalith on the whole, is also protection domain of the present utility model.
In this example.Between the surface of contact that described rotating shaft 1 and bearing are 2 at the surperficial direct spraying of rotating shaft 1 or sintered ceramic dielectric isolation layer; The shaft part that namely coordinates with bearing 2 in rotating shaft 1 and the shaft shoulder on right side 11 end faces spraying or sintered ceramic dielectric isolation layers.
Surface of contact between described bearing 2 and bearing fixed block is at bearing fixed block surface direct spraying or sintered ceramic dielectric isolation layer.Namely spraying or sintered ceramic dielectric isolation layer on pressure ring 4 surfaces.
Embodiment three
As shown in Figure 3, a kind of electrical isolation turning gear of the present utility model, comprise rotating shaft 1, bearing 2 and bearing fixed block, this example comprises that also distance bushing 3(distance bushing 3 comprises isolating ring 31 in addition), distance bushing 3 is located at rotating shaft 1 and is contacted with bearing 2 with 2, bearing, what contact with bearing 2 in the bearing fixed block comprises pressure ring 4, and that plays fixation comprises nut 6 and sleeve 5; Interior ring one side of bearing 2 contacts with the shaft shoulder 11, and opposite side is by sleeve 5 and pressure ring 4 location, and nut 6 is fixing; Can certainly adopt other known mode to fix, are all protection domains of the present utility model.
In order to realize electrical isolation, the surface of contact that described rotating shaft 1 and distance bushing 3 and distance bushing 3 bearing are 2 is equipped with the ceramic insulation separation layer.One of surface of contact that can be also 2, described rotating shaft 1 and distance bushing 3 or distance bushing 3 bearing is provided with the ceramic insulation separation layer, and simultaneously, the surface of contact between bearing 2 and bearing fixed block is provided with the ceramic insulation separation layer.
The part that in figure, thick line represents is exactly this routine ceramic insulation separation layer, and in fact 4 of pressure rings need internal surfaces to be provided with the ceramic insulation separation layer with the side that contacts with bearing 2 to get final product, and perhaps, it adopts stupalith on the whole, is also protection domain of the present utility model.
In this example.The dielectric isolation layer that described rotating shaft 1 and bearing are 2; Namely comprise isolating ring 31 at distance bushing 3() surface spraying or sintered ceramic dielectric isolation layer.
And distance bushing 3(comprises isolating ring 31) the plan of establishment of ceramic insulation separation layer have:
1, all surface is equipped with the ceramic insulation separation layer;
2, in the figure of distance bushing 3 outer surfaces and isolating ring 31, left surface is provided with the ceramic insulation separation layer;
3, in the figure of distance bushing 3 internal surfaces and isolating ring 31, right flank is provided with the ceramic insulation separation layer.
Surface of contact between described bearing 2 and bearing fixed block is at bearing fixed block surface direct spraying or sintered ceramic dielectric isolation layer.Namely spraying or sintered ceramic dielectric isolation layer on pressure ring 4 surfaces.
In addition, based on above embodiment, the thickness of described spraying or sintered ceramic dielectric isolation layer is at 0.1mm～10mm.Specifically can choose according to the size of the diameter of axle and the insulating strength of requirement.That the knowledge that those of ordinary skills can grasp no longer describes in detail.
Simultaneously, spraying or sintered ceramic dielectric isolation layer can carry out pretreatment in need insulation processing to be processed zone, are mainly to form construction layer by sandblast, then ceramic insulation protective layer on thermal spraying or sintering.Part after spraying can directly use also can carry out secondary operations, by grinding machine, by the size of secondary operations dimensioned insulating protective layer to requirement, and guarantees that the degree of finish of working surface satisfies the requirement of assembling.
As seen, the utility model has been realized electrical isolation fully to bearing 2, and manufacturing process is simple, and wear resistance is good, good insulation preformance, the life-span is long, reliability is high, the Novel electric cyclostrophic axle system of safety durable.
The above; it is only the better embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement are within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (6)
1. electrical isolation turning gear, comprise rotating shaft (1), bearing (2) and bearing fixed block, it is characterized in that, the surface of contact between described rotating shaft (1) and bearing (2) and the surface of contact between bearing (2) and bearing fixed block are equipped with the ceramic insulation separation layer.
2. electrical isolation turning gear according to claim 1, is characterized in that, between the surface of contact between described rotating shaft (1) and bearing (2) at the surperficial direct spraying of rotating shaft (1) or sintered ceramic dielectric isolation layer; Surface of contact between described bearing (2) and bearing fixed block is at bearing fixed block surface direct spraying or sintered ceramic dielectric isolation layer.
3. electrical isolation turning gear according to claim 2, is characterized in that, described bearing fixed block comprises the shaft shoulder (11) and pressure ring (4) of rotating shaft (1); In bearing (2), ring one side contacts with the shaft shoulder (11), and opposite side is located fixing by pressure ring (4); Between the surface of contact of the described shaft shoulder (11) and bearing (2) at the surperficial direct spraying of the shaft shoulder (11) or sintered ceramic dielectric isolation layer; Be stupalith at the surperficial direct spraying of pressure ring (4) or sintered ceramic dielectric isolation layer or described pressure ring (4) between the surface of contact of described pressure ring (4) and bearing (2).
4. electrical isolation turning gear according to claim 1, it is characterized in that, also comprise distance bushing (3), distance bushing (3) is located between rotating shaft (1) and bearing (2), at outer surface and/or internal surface spraying or the sintered ceramic dielectric isolation layer of distance bushing (3).
5. electrical isolation turning gear according to claim 4, is characterized in that, described distance bushing (3) comprises the isolating ring (31) of the ring interstation of the interior ring exterior edge face of being located at bearing (2) and rotating shaft (1); The outer surface of isolating ring (31) and/or internal surface spraying or sintered ceramic dielectric isolation layer.
6. according to claim 1,2,3,4 or 5 described electrical isolation turning gears, it is characterized in that, the thickness of described spraying or sintered ceramic dielectric isolation layer is at 0.1mm～10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220661700 CN202946566U (en) | 2012-12-04 | 2012-12-04 | Electric isolation rotary shaft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220661700 CN202946566U (en) | 2012-12-04 | 2012-12-04 | Electric isolation rotary shaft device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946566U true CN202946566U (en) | 2013-05-22 |
Family
ID=48422271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220661700 Expired - Lifetime CN202946566U (en) | 2012-12-04 | 2012-12-04 | Electric isolation rotary shaft device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946566U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966673A (en) * | 2012-12-04 | 2013-03-13 | 普光新高（北京）技术开发有限公司 | Electric-isolation rotating shaft device |
-
2012
- 2012-12-04 CN CN 201220661700 patent/CN202946566U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966673A (en) * | 2012-12-04 | 2013-03-13 | 普光新高（北京）技术开发有限公司 | Electric-isolation rotating shaft device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130522 |