CN202140331U - Bearing frame of centrifugal fan - Google Patents
Bearing frame of centrifugal fan Download PDFInfo
- Publication number
- CN202140331U CN202140331U CN201120254123U CN201120254123U CN202140331U CN 202140331 U CN202140331 U CN 202140331U CN 201120254123 U CN201120254123 U CN 201120254123U CN 201120254123 U CN201120254123 U CN 201120254123U CN 202140331 U CN202140331 U CN 202140331U
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- CN
- China
- Prior art keywords
- support
- fixing part
- centrifugal blower
- bracket stand
- bearing bracket
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- 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.)
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Abstract
The utility model relates to a bearing frame of a centrifugal fan. The bearing frame is fixed with an outer ring of an insert bearing of the centrifugal fan and consists of a plurality of brackets which are arranged along the radial direction of the bearing and are connected with one another in a splicing way, wherein the brackets are in a long-strip shaped integrated structure roughly; each of the brackets comprises a fixing part, a locating part and a connecting part; a circular arc surface matched with the circular arc of an air inlet of the centrifugal fan is arranged at one end of the fixing part of each of the brackets, and the end of the fixing part of each of the brackets is fixedly connected with the air inlet; the locating part of each of the brackets takes the shape of a circular arc and is provided with a concave spherical surface matched with the outer ring of the insert bearing of the centrifugal fan; and the connecting part of each of the brackets is fixedly connected with the fixing part of another bracket so as to realize the splicing between the plurality of brackets. In the utility model, the splicing structure is adopted, so that the structure is simple, the intensity is high, and the stability is good; besides, the location is accurate, and the assembly difficulty is low; therefore, the production efficiency can be greatly improved, and the material cost can be lowered.
Description
Technical field
The utility model relates to a kind of centrifugal blower, particularly relates to a kind of bearing bracket stand that is used for fixing bearing with spherical outside surface that is installed on the centrifugal blower, belongs to the centrifugal blower technical field.
Background technique
Centrifugal blower of the prior art, particularly large-scale centrifugal blower generally is made up of casing, intake grill, impeller, motor, belt, belt pulley, main shaft, bearing and bearing bracket stand.Wherein, bearing fixing is on bearing bracket stand, and main shaft is connected with bearing fixing, and driven by motor belt pulley, belt and main shaft rotate, thereby impeller is rotated.Bearing bracket stand in the prior art generally adopts welded structure, is formed by angle steel, steel plate welding, and this needs accurate machining to guarantee the size requirement of bearing bracket stand; Thereby guarantee that main shaft is coaxial with the center of impeller; But, therefore can have influence on the assembly precision of bearing bracket stand, in addition because part is prone to temperature distortion when welding; This kind structure manufacture cost is higher, and manufacturing efficiency is also lower.
Summary of the invention
The utility model main purpose is to address the above problem and is not enough, provides a kind of simple in structure, and installation difficulty is low, the centrifugal blower bearing bracket stand that cost is low.
For realizing above-mentioned purpose, the technological scheme of the utility model is:
A kind of centrifugal blower bearing bracket stand; Fix with the outer ring of the bearing with spherical outside surface of centrifugal blower; Said bearing bracket stand is made up of the support of said bearing radially direct in a plurality of edges and splicing each other; Said support is for roughly being the integrative-structure spare of strip; Said support comprises fixing part, positioning part and joint three parts; One end of said support fixing part has the arc surface that matches with said centrifugal blower intake grill circular arc and is fixedly connected with said intake grill, and said support positioning part is a circular arc and has the concave spherical surface that matches with the outer ring of said bearing with spherical outside surface, and said support joint is fixedly connected the splicing that realizes between a plurality of said supports with the fixing part of another support.
Further, said support fixing part is provided with stiffening rib.
Further, said stiffening rib comprises flanging and/or groove.
Further, has limit structure, flange or the convexity of said limit structure for when splicing, matching with the said stiffening rib of another said support fixing part in the end of said support joint.
Further, the joint of said support is connected through at least one bolt with the fixing part of another support.
Further, the fixing part of said support is connected through bolt with said intake grill.
Further, said support is a mould compression moulding part.
Further, said support is 3-5.
Content to sum up, the described a kind of centrifugal blower bearing bracket stand of the utility model is spliced by a plurality of supports, and is not only simple in structure, and intensity height and good stability.Each support can adopt mould compression moulding, and moulding is simple, and cost is low.This bearing bracket stand utilizes the arc surface of the bracket end location of matching with the circular arc of intake grill, and accurate positioning and assembling difficulty are lower, can enhance productivity.
Description of drawings
Fig. 1 is the utility model centrifugal blower structural representation;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the utility model bearing bracket stand structural representation;
Fig. 4 is the A-A sectional view of Fig. 3;
Fig. 5 is the structural representation of the utility model support;
Fig. 6 is that the B of Fig. 5 is to view;
Fig. 7 is the C-C sectional view of Fig. 5;
Fig. 8 is the D-D sectional view of Fig. 6;
Fig. 9 is the utility model air inlet structure schematic representation.
Extremely shown in Figure 9 like Fig. 1, casing 1, intake grill 2, impeller 3, main shaft 4, bearing with spherical outside surface 5, bearing bracket stand 6; Support 7, concave spherical surface 8, fixing part 9, positioning part 10, joint 11, arc surface 12, attachment hole 13; Flanging 14, groove 15, mounting hole 16, mounting hole 17, bolt 18, limit structure 19.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
Extremely shown in Figure 4 like Fig. 1; A kind of centrifugal blower is made up of casing 1, intake grill 2, impeller 3, main shaft 4, bearing with spherical outside surface 5, bearing bracket stand 6, motor, belt and belt pulley (not shown); Bearing bracket stand 6 is used for fixing the bearing with spherical outside surface 5 of centrifugal blower; The outer ring of bearing bracket stand 6 is fixed on the intake grill 2 of centrifugal blower, and the outer ring of the inner ring of bearing bracket stand 6 and bearing with spherical outside surface 5 is fixed, after installation; The axle center of axle center and bearing bracket stand 6 of axle center, intake grill 2 that guarantees axle center, the bearing with spherical outside surface 5 of impeller spindle 4 and then guarantees the stability of centrifugal blower fan blade wheel 3 work on same straight line.
To shown in Figure 4, centrifugal blower bearing bracket stand 6 is made up of along bearing with spherical outside surface 5 radially-arranged supports 7 a plurality of, for satisfying support strength like Fig. 1; The 7 general 3-5 that select are individual for support; In the present embodiment, adopted 7,4 supports 7 of 4 supports to splice each other; Be formed centrally therein and the close-fitting concave spherical surface 8 in the outer ring of bearing with spherical outside surface 5, and then bearing with spherical outside surface 5 is fixedly secured in concave spherical surface 8.The structure of this splicing can avoid welding in the existing technology influence of the welding deformation that is brought, and makes the location of bearing bracket stand and bearing with spherical outside surface 1 more accurate, simultaneously, owing to do not need weld job, also can guarantee the attractive in appearance and intensity of its monnolithic case.
To shown in Figure 8, each support 7 is the integrative-structure spare that roughly is strip like Fig. 5, and in the present embodiment, support 7 is a mould compression moulding part, can effectively guarantee the validity of support 7 each several part sizes like this, and then also can reduce the installation difficulty of bearing bracket stand 6.Support 7 comprises fixing part 9, positioning part 10 and joint 11 3 parts.Wherein, fixing part 9 is used for being fixedly connected with intake grill 2, and positioning part 10 is used to splice the close-fitting concave spherical surface 8 in outer ring of back formation and bearing with spherical outside surface 5, and joint 11 is used for being fixedly connected with the fixing part 9 of another support 7 splicing of 7 on a plurality of supports of realization.
Circular arc as shown in Figure 9, that it is R that intake grill 2 places of centrifugal blower have a radius is because intake grill 2 is a mould compression moulding part; So the size of its radius of arc R can effectively guarantee, in order to reduce the installation difficulty of bearing bracket stand 6, simultaneously in order to improve the installing and locating degree of accuracy of bearing bracket stand 6; As shown in Figure 6; An end that is connected with intake grill 2 at support 7 fixing parts 9 has the arc surface 12 that matches with intake grill 2 circular arcs, and arc surface 12 is the circular arc flanging of bending upwards, and the radius R of arc surface 12 and intake grill 2 radius of arc R are consistent; When mounting bracket 7; Only need the circular arc of the arc surface on the support 7 12 with intake grill 2 be fitted, can realize the self-alignment of each support 7, thereby the axle center of the axle center of the bearing bracket stand 6 after the assurance assembly unit and intake grill 2 is on same straight line.
As shown in Figure 5, fixing part 9 is provided with an attachment hole 13, and attachment hole 13 is arranged on the arc surface 12, is connected through bolton between attachment hole 13 and the intake grill 2, thereby support 7 and intake grill 2 are fixed together.
Like Fig. 5, Fig. 6 and shown in Figure 8, for improving the intensity of support 7, fixing part 9 is provided with a plurality of stiffening ribs, and stiffening rib can be the flanging 14 of convexity, also can be the groove 15 of depression, and two kinds of structures have all adopted in the present embodiment.
Like Fig. 6 and shown in Figure 7, be provided with two mounting holes 16 at fixing part 9 near an end of positioning part 10, one of them is provided with near positioning part 10, on joint 11, also is correspondingly provided with two mounting holes 17, and one of them is provided with near positioning part 10.As shown in Figure 3, when support 7 spliced, the mounting hole 16 on support 7 fixing part 9 was fastenedly connected through bolt 18 with mounting hole 17 on another adjacent support 7 joints 11, thereby two supports 7 are stitched together.
End at support 7 joints 11 has limit structure 19, the flange of limit structure 19 for when splicing, matching with the flanging 14 of another support 7 fixing parts 9, or the convexity that matches with the groove 15 of fixing part 9; Extremely shown in Figure 7 like Fig. 5; In the present embodiment, limit structure 19 has adopted the turnup structure at dual-side, when splicing; This flange just in time fastens in the flanging 14 on fixing part 9, plays spacing effect.
Like Fig. 3 and shown in Figure 5, are positioning parts 10 in the centre of fixing part 9 and joint 11, positioning part 10 is circular-arc; Its inner side surface is the concave spherical surface 8 that matches with the outer ring of bearing with spherical outside surface 5; The splicing back, positioning part 10 of 4 supports 7 forms complete concave spherical surface 8, and the outer ring of bearing with spherical outside surface 5 is fastened on its inside, usurps the throne when preventing bearing 5 angular adjustment; Influence the working life of bearing 5, simultaneously bearing with spherical outside surface 5 is played the effect of centering.
This support 7 is a strip, and blank size is narrow, can utilize the leftover pieces blanking, reduces cost of material, improves the utilization ratio of material.
As stated, in conjunction with the given scheme content of accompanying drawing, can derive the similar techniques scheme.In every case be the content that does not break away from the utility model technological scheme, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of the utility model technological scheme according to the technical spirit of the utility model.
Claims (8)
1. centrifugal blower bearing bracket stand; Fix with the outer ring of the bearing with spherical outside surface of centrifugal blower; It is characterized in that: said bearing bracket stand is made up of the support of said bearing radially direct in a plurality of edges and splicing each other; Said support is for roughly being the integrative-structure spare of strip; Said support comprises fixing part, positioning part and joint three parts; One end of said support fixing part has the arc surface that matches with said centrifugal blower intake grill circular arc and is fixedly connected with said intake grill, and said support positioning part is a circular arc and has the concave spherical surface that matches with the outer ring of said bearing with spherical outside surface, and said support joint is fixedly connected the splicing that realizes between a plurality of said supports with the fixing part of another support.
2. centrifugal blower bearing bracket stand according to claim 1 is characterized in that: said support fixing part is provided with stiffening rib.
3. centrifugal blower bearing bracket stand according to claim 2 is characterized in that: said stiffening rib comprises flanging and/or groove.
4. centrifugal blower bearing bracket stand according to claim 3 is characterized in that: the end at said support joint has limit structure, flange or the convexity of said limit structure for when splicing, matching with the said stiffening rib of another said support fixing part.
5. centrifugal blower bearing bracket stand according to claim 1 is characterized in that: the joint of said support is connected through at least one bolt with the fixing part of another support.
6. centrifugal blower bearing bracket stand according to claim 1 is characterized in that: the fixing part of said support is connected through bolt with said intake grill.
7. centrifugal blower bearing bracket stand according to claim 1 is characterized in that: said support is a mould compression moulding part.
8. according to each described centrifugal blower bearing bracket stand of claim 1 to 7, it is characterized in that: said support is 3-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120254123U CN202140331U (en) | 2011-07-19 | 2011-07-19 | Bearing frame of centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120254123U CN202140331U (en) | 2011-07-19 | 2011-07-19 | Bearing frame of centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202140331U true CN202140331U (en) | 2012-02-08 |
Family
ID=45551389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120254123U Expired - Fee Related CN202140331U (en) | 2011-07-19 | 2011-07-19 | Bearing frame of centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202140331U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899544A (en) * | 2012-12-28 | 2014-07-02 | 南通大通宝富风机有限公司 | Portable centrifugal ventilator |
-
2011
- 2011-07-19 CN CN201120254123U patent/CN202140331U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899544A (en) * | 2012-12-28 | 2014-07-02 | 南通大通宝富风机有限公司 | Portable centrifugal ventilator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20200719 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |