CN209340208U - A kind of blade wheel positioning structure and turbocharger - Google Patents
A kind of blade wheel positioning structure and turbocharger Download PDFInfo
- Publication number
- CN209340208U CN209340208U CN201822210895.8U CN201822210895U CN209340208U CN 209340208 U CN209340208 U CN 209340208U CN 201822210895 U CN201822210895 U CN 201822210895U CN 209340208 U CN209340208 U CN 209340208U
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- shaft
- small diameter
- blade wheel
- impeller
- diameter shaft
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Abstract
The utility model discloses a kind of blade wheel positioning structure, including impeller body and turbine wheel shaft, the axis hole for connecting turbine wheel shaft is provided on the impeller body, the turbine wheel shaft includes small diameter shaft, major diameter axis, the junction of the small diameter shaft and major diameter axis is formed with step, the impeller body is socketed in small diameter shaft, and one end of impeller body is resisted against on step, its other end is fixed by pressing plate, at least 2 parallel keyways are in axial direction offered on the inner wall of the axis hole, the positioning protrusion matched with keyway is provided in the small diameter shaft.A kind of turbocharger, including blade wheel positioning structure as described above is also disclosed in the utility model.Impeller is positioned by using the utility model, it can guarantee under the state of running at high speed, impeller will not relatively rotate with turbine wheel shaft, and then guarantee impeller and turbine are not in relatively rotate, to guarantee that the performance of turbocharger will not reduce, structure is simple, is easily achieved.
Description
Technical field
The utility model relates to field of turbochargers more particularly to a kind of blade wheel positioning structure and turbocharger.
Background technique
Turbocharger is to push the indoor turbine of turbine, turbine and band using the exhaust gas inertia impulsive force of engine discharge
Coaxial impeller is moved, the air that impeller force feed is sent by pipeline is allowed to pressurization and enters cylinder.When engine speed increase, exhaust gas
The velocity of discharge just compresses more air and enters cylinder with secondary speed also synchronous increase, impeller, and the pressure and density of air increase
Can burn greatly more fuel, increase accordingly fuel quantity and adjust the revolving speed of engine, so that it may increase the output of engine
Power.
The course of work of turbocharger is the process continuously recycled, is had sternly to turbine wheel shaft outer diameter and impeller inner hole
The required precision of lattice.However, for the turbocharger being applied on heavy construction machine, since its revolving speed is higher, commonly
Blade wheel positioning structure it is hard to work, cause under the state of running at high speed, can produce relative rotation between impeller and turbine wheel shaft, into
And to produce relative rotation between impeller and turbine, so that service performance be caused to decline, it is badly in need of solving as a result,.
Utility model content
The purpose of this utility model is that in view of the above-mentioned problems, provide a kind of blade wheel positioning structure and turbocharger, with
It solves existing blade wheel positioning structure and is difficult to effective, reliable realization positioning, under the state of running at high speed, between impeller and turbine easily
The problem of relatively rotating, turbocharger service performance caused to decline.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of blade wheel positioning structure, including impeller body and turbine wheel shaft are provided with for connecting turbine on the impeller body
The axis hole of axis, the turbine wheel shaft include small diameter shaft, major diameter axis, and the small diameter shaft and the junction of major diameter axis are formed with
Step, the impeller body are socketed in small diameter shaft, and one end of impeller body is resisted against on step, and the other end passes through pressure
Plate is fixed, and in axial direction offers at least 2 parallel keyways on the inner wall of the axis hole, in the small diameter shaft
It is provided with the positioning protrusion matched with keyway.
As a kind of preferred embodiment of the utility model, the keyway is 2, symmetrical, is set in the small diameter shaft
2 positioning protrusion are equipped with, 2 positioning protrusion and 2 keyways, which correspond, to be distributed.
As a kind of preferred embodiment of the utility model, 2 positioning protrusion are on the axial direction of small diameter shaft
It is staggeredly arranged.
As a kind of preferred embodiment of the utility model, the keyway is 3, distribution triangular in shape, the minor diameter
3 positioning protrusion are provided on axis, 3 positioning protrusion and 3 keyways, which correspond, to be distributed.
As a kind of preferred embodiment of the utility model, 3 positioning protrusion are on the axial direction of small diameter shaft
It is staggeredly arranged.
As a kind of preferred embodiment of the utility model, the small diameter shaft, major diameter axis, positioning protrusion are integrated knot
Structure.
A kind of turbocharger, including blade wheel positioning structure as described above.
The beneficial effects of the utility model are to position by using the utility model to impeller, be can guarantee in high speed
Under operating condition, impeller will not relatively rotate with turbine wheel shaft, and then guarantee impeller and turbine are not in relatively rotate, from
And guaranteeing that the performance of turbocharger will not reduce, structure is simple, is easily achieved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of impeller in embodiment one；
Fig. 2 is the structural schematic diagram of turbine wheel shaft in embodiment one；
Fig. 3 is the schematic diagram of blade wheel positioning structure in embodiment one；
Fig. 4 is enlarged drawing of the blade wheel positioning structure at A shown in Fig. 3；
Fig. 5 is the structural schematic diagram of impeller in embodiment two.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.It can manage
Solution, embodiment described herein are used only for explaining the utility model, rather than the restriction to the utility model.
Embodiment one
Please refer to figs. 1 to 4, Fig. 1 is the structural schematic diagram of impeller in embodiment one；Fig. 2 is whirlpool in embodiment one
The structural schematic diagram of wheel shaft；Fig. 3 is the schematic diagram of blade wheel positioning structure in embodiment one；Fig. 4 is blade wheel positioning structure shown in Fig. 3
Enlarged drawing at A.
In this present embodiment, a kind of blade wheel positioning structure, including impeller body 11 and turbine wheel shaft 12, the impeller body 11
On be provided with axis hole for connecting turbine wheel shaft 12, the turbine wheel shaft 12 includes small diameter shaft 121, major diameter axis 122, described small straight
The junction of journal axle 121 and major diameter axis 122 is formed with step, and the impeller body 11 is socketed in small diameter shaft 121, and leaf
One end of wheel ontology 11 is resisted against on step, and the other end is fixed by pressing plate (not being painted in figure), the axis hole it is interior
2 parallel keyways 111 are in axial direction offered on wall, 2 keyways 111 are symmetrical, the small diameter shaft
2 positioning protrusion 123 are provided on 121,2 positioning protrusion 123 and 2 keyways 111, which correspond, to be distributed,
And 2 positioning protrusion 123 are staggeredly arranged on the axial direction of small diameter shaft 121, i.e., exist in 2 positioning protrusion 123
The right distribution of a first from left on left and right directions shown in Fig. 4, and then can be improved the reliability of positioning.
For the ease of processing, installing, in the present embodiment, the small diameter shaft 121, major diameter axis 122, positioning protrusion 123
It is structure as a whole.
In order to guarantee the leakproofness of junction, one end of keyway 111 can be designed to enclosed construction, i.e. key in the present embodiment
Slot 111 and the entire axis hole of non-through, it is not only convenient for assembling, plays certain positioning action, can also improve sealing effect.
A kind of turbocharger, including blade wheel positioning structure as described above is also disclosed in the present embodiment.
Impeller is positioned by using above structure, can guarantee under the state of running at high speed, impeller and turbine wheel shaft 12
It will not relatively rotate, and then guarantee impeller and turbine are not in relatively rotate, to guarantee the performance of turbocharger
It will not reduce, structure is simple, is easily achieved.
Embodiment two
Shown in referring to figure 5., in the present embodiment, 3 parallel keyways are offered on the shaft hole inner wall of impeller body 21
211, the distribution triangular in shape of 3 keyways 211 is corresponding, and 3 positioning protrusion, 3 positioning protrusion are provided on turbine wheel shaft
It is staggeredly arranged in the axial direction of turbine wheel shaft, remaining structure is the same as example 1, and details are not described herein.
In the present embodiment, 3 keyways 211 are offered on the shaft hole inner wall of impeller body 21, it is fixed with 3 on turbine wheel shaft
Position protrusion, which matches, enables to positioning more reliable, firm.
A kind of turbocharger, including blade wheel positioning structure as described above is also disclosed in the present embodiment.
Above embodiments only elaborate the basic principles and features of the present invention, and the utility model is not by above-mentioned implementation
Example limitation, on the premise of not departing from the spirit and scope of the utility model, the present invention has various changes and changes, these
Changes and modifications are fallen within the scope of the claimed invention.The utility model requires protection scope is by appended right
Claim defines.
Claims (7)
1. a kind of blade wheel positioning structure, including impeller body and turbine wheel shaft, it is characterised in that: be provided with and be used on the impeller body
The axis hole of turbine wheel shaft is connected, the turbine wheel shaft includes small diameter shaft, major diameter axis, the connection of the small diameter shaft and major diameter axis
Place is formed with step, and the impeller body is socketed in small diameter shaft, and one end of impeller body is resisted against on step, another
End is fixed by pressing plate, and at least 2 parallel keyways are in axial direction offered on the inner wall of the axis hole, described small
The positioning protrusion matched with keyway is provided in diameter shaft.
2. a kind of blade wheel positioning structure according to claim 1, it is characterised in that: the keyway is 2, symmetrical,
2 positioning protrusion are provided in the small diameter shaft, 2 positioning protrusion and 2 keyways, which correspond, to be distributed.
3. a kind of blade wheel positioning structure according to claim 2, it is characterised in that: 2 positioning protrusion are small straight
It is staggeredly arranged on the axial direction of journal axle.
4. a kind of blade wheel positioning structure according to claim 1, it is characterised in that: the keyway is 3, triangular in shape
It is distributed, 3 positioning protrusion is provided in the small diameter shaft, 3 positioning protrusion and 3 keyways correspond
Distribution.
5. a kind of blade wheel positioning structure according to claim 4, it is characterised in that: 3 positioning protrusion are small straight
It is staggeredly arranged on the axial direction of journal axle.
6. a kind of blade wheel positioning structure according to any one of claims 1 to 5, it is characterised in that: the small diameter shaft, big
Diameter shaft, positioning protrusion are structure as a whole.
7. a kind of turbocharger, it is characterised in that: including blade wheel positioning structure according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822210895.8U CN209340208U (en) | 2018-12-26 | 2018-12-26 | A kind of blade wheel positioning structure and turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822210895.8U CN209340208U (en) | 2018-12-26 | 2018-12-26 | A kind of blade wheel positioning structure and turbocharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209340208U true CN209340208U (en) | 2019-09-03 |
Family
ID=67759314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822210895.8U Active CN209340208U (en) | 2018-12-26 | 2018-12-26 | A kind of blade wheel positioning structure and turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209340208U (en) |
-
2018
- 2018-12-26 CN CN201822210895.8U patent/CN209340208U/en active Active
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