CN203161643U - Polygon structure for linking impeller with gear shaft - Google Patents
Polygon structure for linking impeller with gear shaft Download PDFInfo
- Publication number
- CN203161643U CN203161643U CN 201320013597 CN201320013597U CN203161643U CN 203161643 U CN203161643 U CN 203161643U CN 201320013597 CN201320013597 CN 201320013597 CN 201320013597 U CN201320013597 U CN 201320013597U CN 203161643 U CN203161643 U CN 203161643U
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- China
- Prior art keywords
- impeller
- gear shaft
- polygon
- linking
- boss
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- Expired - Lifetime
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Abstract
The utility model relates to a polygon structure for linking an impeller with a gear shaft. The polygon structure for linking the impeller with the gear shaft comprises the gear shaft, the impeller and a fastening screw, where a through hole is formed in the center of the impeller, a boss is arranged on the back face of the impeller, the boss is in a polygon shape, the end face of the gear shaft is provided with a polygon concave hole, and a threaded hole is further formed in the center of the concave hole. The boss of the impeller is inserted in the concave hole of the gear shaft so that circumferential-direction positioning is achieved. The fastening screw passes through the central hole of the impeller and is screwed into the threaded hole of the gear shaft so that axial-direction positioning is achieved. Three sections of large arcs are tangent to three sections of small arcs, and the large arcs and the small arcs form the polygon. The impeller and the gear shaft are linked through the polygon linking structure to deliver a torque, due to the fact that all places of the polygon are tangent, no protruding edge exists, therefore, the fatigue effect of the polygon linking structure can be ignored, and stress concentration does not exist. The polygon structure for linking the impeller with the gear shaft has stable rotational inertia, is good in dynamic balance performance and improves stability of the system. Due to the fact that the torque is delivered through pure torsion, the torque delivery load can be effectively improved by more than 30%.
Description
Technical field
The utility model relates to the polygonal connecting structure of impeller and gear shaft, and specifically it is a kind of locating clip locking structure of impeller, guarantees the impeller reliability of operation, belongs to the mechanical structure technical field.
Background technique
In prior art, the connecting structure of single-stage high-speed centrifugal blower fan blade wheel and gear shaft generally adopts key formula or non-key type, and after the non-key type structure relied on the distortion of high speed shaft elastic stretching, deformation partly recovered to compress impeller.Impeller obtains higher rotation speed by motor driving after gear up.Have the key formula to connect, owing to keyway design and used key material with reasons such as the impeller body material are inconsistent, will produce extra dynamic unbalance at impeller and high speed shaft; In addition, because design has keyway on the impeller, also to consider the problem of impeller local strength influence; Adopt keyless structural design for impeller, high speed shaft elastic stretching amount and deformation amount of recovery are wayward, and the back that stretches easily produces the stress concentration phenomenon; It is unreliable to transmit torsion by the friction of tightening force generation, wastes time and energy during assembling.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, thereby the polygonal connecting structure of a kind of impeller and gear shaft is provided, and this structural-load-carrying capacity is strong, and the moment of torsion transmission is stable, and dynamic balance performance is good, the stability when effectively improving wheel rotation.
According to the technological scheme that the utility model provides, the polygonal connecting structure of impeller and gear shaft comprises gear shaft, impeller and fastening screw trip bolt; Described impeller center is provided with through hole, and the back side is provided with the boss of impeller, and boss is polygonal; The end face of described gear shaft is provided with the polygonal shrinkage pool, and the shrinkage pool center also is provided with tapped hole.The boss of described impeller inserts in the shrinkage pool of gear shaft, to form circumferential location; Described fastening screw trip bolt screws in the tapped hole of gear shaft by the center hole of impeller, to form axially locating.
As further improvement of the utility model, polygonal is by three sections orthodromes and three sections little circular arcs are tangent constitutes.Wherein, large circular arc radius is R, at 15mm between the 20mm.Little radius of arc is r, at 7mm between the 9mm.
Compared with the prior art the utility model has the following advantages:
The utility model is simple in structure, compact, reasonable.Impeller connects to transmit moment of torsion with gear shaft by polygonal, because polygonal is tangent everywhere, does not have outstanding limit, thereby can ignore its fatigue effect, does not also exist stress to concentrate.And it has stable rotary inertia, and dynamic balance performance is good, has improved the stability of system.Transmit moment of torsion by pure torsion, can effectively improve moment of torsion and transmit load more than 30%.
Description of drawings
Fig. 1 is the utility model structure scheme of installation.
Fig. 2 is the A-A view of the utility model structure.
Embodiment
Embodiment during following the utility model is incited somebody to action by reference to the accompanying drawings is further described:
As shown in Figure 1 and Figure 2: the polygonal connecting structure of impeller and gear shaft comprises gear shaft 1, impeller 2 and fastening screw trip bolt 3; Described impeller 2 centers are provided with a through hole, and the back side is provided with a boss 2-1, and boss 2-1 is polygonal.The end face of described gear shaft 1 is provided with a polygonal shrinkage pool 1-1, and shrinkage pool 1-1 center also is provided with a tapped hole.The boss 2-1 of described impeller inserts in the shrinkage pool 1-1 of gear shaft, to form circumferential location.Described fastening screw trip bolt 3 screws in the tapped hole of gear shaft 1 by the center hole of impeller 2, to form axially locating.
As further improvement of the utility model, polygonal is by three sections orthodromes and three sections little circular arcs are tangent constitutes.Wherein, large circular arc radius is R, at 15mm between the 20mm.Little radius of arc is r, at 7mm between the 9mm.
Polygonal constitutes similar leg-of-mutton shape by six sections circular arcs, guarantees the firm of circumferentially connection.And six sections circular arcs are tangent everywhere, effectively avoided the stress in the torsion transmittance process to concentrate, and improved the ability that moment of torsion transmits.After gear shaft 1 was rotated by driven by motor, the polygonal shrinkage pool 1-1 on the gear shaft is rotation thereupon also, and the polygonal boss 2-1 of polygonal shrinkage pool 1-1 and impeller circumferentially is being fixing, thus final impeller 2 rotation at a high speed.
Claims (2)
1. the polygonal connecting structure of impeller and gear shaft comprises gear shaft (1), impeller (2); It is characterized in that: described impeller (2) center is provided with through hole, and the back side is provided with the boss (2-1) of impeller, and the boss of impeller (2-1) is polygonal; The end face of described gear shaft (1) is provided with polygonal shrinkage pool (1-1), and shrinkage pool (1-1) center also is provided with tapped hole; The boss of described impeller (2-1) inserts in the polygonal shrinkage pool (1-1), to form circumferential location; Described fastening screw trip bolt (3) screws in the tapped hole of gear shaft (1) by the center hole of impeller (2), to form axially locating.
2. the polygonal connecting structure of impeller as claimed in claim 1 and gear shaft is characterized in that: described polygonal is by three sections orthodromes and three sections little circular arcs are tangent constitutes; Wherein, large circular arc radius is R, and little radius of arc is r; Large circular arc radius R is 15mm-20mm; Roundlet arc radius r is 7mm-9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320013597 CN203161643U (en) | 2013-01-10 | 2013-01-10 | Polygon structure for linking impeller with gear shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320013597 CN203161643U (en) | 2013-01-10 | 2013-01-10 | Polygon structure for linking impeller with gear shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161643U true CN203161643U (en) | 2013-08-28 |
Family
ID=49022830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320013597 Expired - Lifetime CN203161643U (en) | 2013-01-10 | 2013-01-10 | Polygon structure for linking impeller with gear shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161643U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032373A (en) * | 2013-01-10 | 2013-04-10 | 无锡杰尔压缩机有限公司 | Polygonal connection structure of impeller and gear shaft |
| CN105179271A (en) * | 2014-06-02 | 2015-12-23 | 依必安派特穆尔芬根股份有限公司 | Radial or diagonal ventilator |
-
2013
- 2013-01-10 CN CN 201320013597 patent/CN203161643U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032373A (en) * | 2013-01-10 | 2013-04-10 | 无锡杰尔压缩机有限公司 | Polygonal connection structure of impeller and gear shaft |
| CN105179271A (en) * | 2014-06-02 | 2015-12-23 | 依必安派特穆尔芬根股份有限公司 | Radial or diagonal ventilator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 214106 No. 38, Qian Lian Road, Xishan Economic Development Zone, Xishan District, Jiangsu, Wuxi Patentee after: GL-TURBO LLC Address before: 214192 Jiangsu Province, Wuxi city Xishan District of Xishan Economic Development Zone in three Furong Road No. 99 building six room 507 zuiun Patentee before: GL-TURBO Compressor, LLC |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |
|
| CX01 | Expiry of patent term |