CN202545537U

CN202545537U - Shaft voltage insulating device

Info

Publication number: CN202545537U
Application number: CN2012201037457U
Authority: CN
Inventors: 刘景文
Original assignee: POWER BASE CO Ltd
Current assignee: POWER BASE CO Ltd
Priority date: 2012-03-19
Filing date: 2012-03-19
Publication date: 2012-11-21
Anticipated expiration: 2022-03-19

Abstract

A shaft voltage insulating device comprises a mandrel. A circular projection surrounding the mandrel is fixed to any end of the mandrel. The mandrel is provided with a socket segment connected with the circular projection. An insulating layer surrounds the socket segment. At least one bearing is sleeved to one insulating layer end of the mandrel. The axial section of the socket segment is smaller than that of the mandrel. At least one insulating spacer is additionally sleeved to the junction of the insulating layer with the circular projection of the mandrel, and the insulating spacers are abutted between the circular projection and the bearings in a clamped manner. The mandrel is provided with an auxiliary socket segment, and a proper distance between the auxiliary socket segment and the socket segment is kept. An auxiliary insulating layer and an auxiliary insulating spacer sleeved on the same surround the surface of the auxiliary socket segment. The shaft voltage insulating device is capable of blocking arc action generated when shaft voltage is too high and preventing noise and unsmooth running.

Description

The shaft voltage seal

Technical field

The utility model produces electric arc about a kind of blocking because of shaft voltage is excessive, and then avoids high arc temperature to be prone to cause the shaft voltage seal of the melting phenomenon of metal.

Background technique

Motor (being commonly called as motor) is a kind of power plant that are seen everywhere, and is applicable in the industrial machine miscellaneous, and is little of the small hand tool, big to whole high buildings and large mansions, all is indispensable power plant.Yet the scope of motor applications is different, further derives the design and the specification of different patterns, cooperating industry of all kinds required, and efficient and benefit when promoting work.

Produce at numerous motor, also must derive the finished parts of many mutual collocation, make the motor of each pattern be able to implement, produce the product that really share.Different motor is according to the application of its different occasions; Different emphasis points is also arranged, and still, an indispensable characteristic but is must exactissima diligentia; That is exactly that shaft current can not be excessive; To avoid electric current to flee hither and thither, cause the infringement of integral motor and bearing, serious words more may make people's false touch and death.So generally between axle and bearing, and the bearing body domestic demand smears oil film, a rotation that utilizes spool and lubricating is because oil film has insulating effect for little shaft voltage.

, in the time must increasing motor adjustment rotating speed, easy meeting makes and produces more high-tension electric power in the motor; When shaft voltage surpassed the insulating strength load of oil film, electric current can get on the motor body of shell through the bearing path from rotating shaft, at this moment caused oil film to be destroyed by electric current easily and went bad; Cause arcing and further form electric current at the Metal Contact position of axle and bearing; The high temperature of electric arc can cause the melting phenomenon of metal, the damage that the electric arc of high temperature can make axle or bearing present the scratch shape, and electric arc also can cause separating out of carbon; The oil film blackening deterioration that feasible skin is smeared; Impaired metal surface and chip will be accelerated the abnormal wear of bearing, cause whole damage of bearings or produce the noise of high frequency, significantly shorten bearing working life.

So,, a kind of practice is arranged in existing technology in order to solve the above problems; It is utilized in, and to stick or twine insulating tape between bearing and axle center excessive and produce arcing to block shaft voltage; Yet but there is a shortcoming in the method, is that the thickness grasp of insulating tape can't reach very accurate, when the thickness grasp is accurate inadequately; Tend to cause the problem of bearing and body bad connection; Make insulation effect can't reach due degree, simultaneously operating speed is slowed down, can increase problems such as human cost and reduction production capacity undoubtedly.

Existing in view of the above shortcoming; The inventor promptly releases a kind of " shaft voltage seal ", and one effectively reaches and blocks shaft voltage, and prevents the generation of arcing; Prevent the problem of bad connection simultaneously, two needn't spend problems such as human cost and reduction production capacity again.

The model utility content

The utility model technical problem underlying to be solved is; Overcome the shortcoming that can't effectively insulate and cause bad connection that existing technology exists; And a kind of shaft voltage seal is provided, it can block the arcing that shaft voltage produces when excessive, and prevents that noise and running from having some setbacks.

The utility model solves the technological scheme that its technical problem adopted:

A kind of shaft voltage seal comprises an axle center, wherein:

The arbitrary end in this axle center is installed with an annular convex around the axle center, and this axle center is provided with a depression section and links to each other with annular convex, and other has an isolation layer to enclose this depression section, and has at least a bearing (bearing) to be sheathed on the end that this axle center is provided with isolation layer;

Whereby, when the fast rotational of axle center, can block the electric arc that produces between bearing and the axle center at the isolation layer on the axle center.

Wherein this depression section axial cross section is less than the axle center axial cross section.

This isolation layer with coating, smear or fixing mode is arranged on the depression section; To block the generation of arcing; And this isolation layer is that (the topmost composition of thermosetting property reinforced fiber material has resin, glass, stuffing and various additive to thermosetting property reinforced fiber material, and wherein resin can be unsaturated polyester resin, epoxy resin; Phenolic resin etc. are fit to mold pressing, ejaculation and transmission molding mode).

Be arranged with annular convex and the isolation layer intersection of at least one insulation spacer on this axle center in addition, and insulation spacer clips between annular convex and bearing, to promote the effect of insulation shaft voltage in this axle center.

Further this axle center is provided with a secondary depression section, and this pair depression section and depression section have suitable spacing, and should enclose a secondary isolation layer by pair depression section surface, and are sheathed on a secondary insulation spacer on the secondary isolation layer.

The beneficial effect of the utility model is, it can block the arcing that shaft voltage produces when excessive, and prevents that noise and running from having some setbacks.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is the utility model schematic perspective view.

Fig. 2 is the utility model assembly exploded perspective schematic representation.

Fig. 3 is the utility model depression section and isolation layer enlarged diagram.

Fig. 4 is the utility model generalized section.

Fig. 5 is the utility model second embodiment's generalized section.

Label declaration among the figure:

1 axle center shell, 2 axle center

21 annular convex, 3 depression sections

4 isolation layers, 41 secondary isolation layers

No. 51 bearings of 5 bearings

6 insulation spacers, 61 secondary insulation spacers

7 secondary depression sections

Embodiment

Above-mentionedly can effectively to block the arcing that shaft voltage produces when excessive in order reaching, and to prevent that noise and running from having some setbacks, the utility model shaft voltage seal is in following description; And see also Fig. 1 to shown in Figure 3; The utility model is assembled in the axle center shell 1, and it comprises an axle center 2, wherein:

These axle center 2 arbitrary ends are installed with an annular convex 21 around axle center 2; This axle center 2 is provided with a depression section 3 and links to each other with annular convex 21; Other has an isolation layer 4 to enclose this depression section 3; Have at least a bearing 5 then to be sheathed on the end that this axle center 2 is provided with isolation layer 4, in addition, on this axle center 2, be arranged with the annular convex 21 and isolation layer 4 intersections of at least one insulation spacer 6 in this axle center 2; And at least one insulation spacer 6 clips between annular convex 21 and at least one bearing 5, increases insulation effect and reduces the consume of at least one bearing 5;

See also Fig. 4 and shown in Figure 5; The end opposite that the utility model is provided with annular convex 21 in this axle center 2 is provided with a secondary depression section 7, and other has a secondary isolation layer 41 to enclose on this pair depression section 7, and secondary isolation layer 41 places in this axle center 2 are arranged with an at least one bearing 5 and a secondary insulation spacer 61; This pair insulation spacer 61 supports and ends at least one bearing 5; Further should pair depression section 7 have suitable spacing, make this axle center 2 stable rotations, and reduce the wear-out life in this axle center 2 and effectively block shaft voltage with depression section 3.

See also shown in Figure 5ly again, the utility model second embodiment is provided with an end of isolation layer 4 for increasing bearing 51 in depression section 3, and this axle center 2 firmly rotate, the stability when increasing axle center 2 and rotating.

Whereby, when 2 fast rotational of this axle center, and shaft voltage smear greater than skin the insulation oil film time, this isolation layer 4 blocks the shaft voltage between at least one bearing 5 and the axle center 2, avoids producing the melting phenomenon that high temperature that arcing causes electric arc causes metal.

See also Fig. 3 depression section 3 with shown in isolation layer 4 enlarged views, these depression section 3 axial cross sections axially cut less than axle center 2 and, make this isolation layer 4 with coating, smear or fixing mode is located on the depression section 3, and trim with these axle center 2 outer circumferential sides.

Wherein this isolation layer 4 is a thermosetting property reinforced fiber material, and topmost composition has resin (like unsaturated polyester resin, epoxy resin, phenolic resin etc.), glass, stuffing and various additive.Be fit to mold pressing, ejaculation and transmit molding mode, with at least one bearing 5 of the arcing galvanic corrosion of blocking the excessive generation of shaft voltage.

The above; It only is the preferred embodiment of the utility model; Be not that the utility model is done any pro forma restriction; Every technical spirit according to the utility model all still belongs in the scope of the utility model technological scheme any simple modification, equivalent variations and modification that above embodiment did.

In sum; The utility model is on structural design, use practicability and cost benefit; It is required to meet industry development fully, and the structure that is disclosed also is to have unprecedented innovation structure, has novelty, creativeness, practicability; The regulation that meets relevant novel patent requirement is so mention application in accordance with the law.

Claims

1. a shaft voltage seal is characterized in that, comprises an axle center:

The arbitrary end in this axle center is installed with an annular convex around the axle center, and this axle center is provided with a depression section and links to each other with annular convex, and other has an isolation layer to enclose this depression section, and has at least a bearing housing to be located at the end that this axle center is provided with isolation layer.

2. shaft voltage seal according to claim 1 is characterized in that, said depression section axial cross section is less than the axle center axial cross section.

3. shaft voltage seal according to claim 1 is characterized in that, other is arranged with annular convex and the isolation layer intersection of at least one insulation spacer in said axle center, and said insulation spacer clips between said annular convex and said bearing.

4. shaft voltage seal according to claim 1; It is characterized in that; Said axle center is provided with a secondary depression section; Have suitable spacing between said secondary depression section and the said depression section, and said secondary depression section surface encloses a secondary isolation layer, and be sheathed on a secondary insulation spacer on the said secondary isolation layer.