Turbine shaft for turbocharger

Abstract

The turbine shaft comprises a main shaft and an impeller, the impeller is coaxially arranged at one end of the main shaft, the impeller comprises a wheel disc and blades, the wheel disc is conical, the center position of the wheel disc is connected with the main shaft, and the blades are evenly arranged on the surface of the outer side of the wheel disc in the circumferential direction. Reinforcing protrusions are arranged at the connecting positions of the blades and the wheel disc, a plurality of arc-shaped grooves are evenly formed in the periphery of the wheel disc in the circumferential direction, and the arc-shaped grooves and the blades are in one-to-one correspondence and distributed at intervals. In addition, the arc-shaped grooves which are spaced from the blades one by one are evenly formed in the periphery of the wheel disc in the circumferential direction, and the situation that the turbine shaft is too heavy due to the fact that reinforcing protrusions are additionally arranged is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to turbine shaft technical field, concretely is a turbine shaft for turbocharger. BACKGROUND

[0002] Turbine shaft is a kind of rotating component, turbocharger is actually a kind of air compressor, and air intake is increased by compressing air. It is the inertia impact force of the exhaust gas of engine that is used to push the turbine in turbine chamber, and the turbine drives the impeller of same shaft, and the impeller sends the air from the air cleaner duct and makes it into the cylinder.

[0003] The turbine shaft currently adopted, the blade on impeller is directly processed, and there is no reinforcing structure, so that the stability of blade has limitation, so that the limitation of rotational speed is higher, therefore, an improved technology is urgently needed to solve the problem existing in the prior art. UTILITY MODEL CONTENT

[0004] The utility model discloses a turbine shaft for turbocharger, the blade and the wheel disc junction are provided with reinforcing protrusion, guarantee the structural strength of each blade through reinforcing protrusion, to guarantee the stability of turbine shaft, improve the upper limit of rotational speed, and the periphery of wheel disc and the circumferential direction are evenly provided with a plurality of arc grooves spaced apart from blade, and the turbine shaft is not too heavy due to the reinforcing protrusion, to solve the problem in the background art.

[0005] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a turbine shaft for turbocharger, including spindle and impeller, the one end of spindle is coaxial with impeller, the impeller includes wheel disc and blade, the wheel disc is conical, the center position of wheel disc is connected with spindle, the outside surface of wheel disc is evenly provided with a plurality of blades along the circumferential direction, the blade and the wheel disc junction are provided with reinforcing protrusion, the periphery of wheel disc and the circumferential direction are evenly provided with a plurality of arc grooves, the arc grooves and the blade are one-to-one corresponding and spaced distribution.

[0006] Preferably, the utility model provides a turbine shaft for turbocharger, wherein the wheel disc is away from the one end of blade and is provided with a plurality of annular sealing grooves with the spindle as the center.

[0007] Preferably, the utility model provides a turbine shaft for turbocharger, wherein the spindle and the impeller are integrated structure.

[0008] Preferably, the utility model provides a turbine shaft for turbocharger, wherein the wheel disc and the blade are integrated structure.

[0009] Preferably, the turbine shaft for turbocharger provided by the utility model, wherein, the blade is gradually curved from inside to outside.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] The reinforcing protrusions are arranged at the connecting positions of the blades and the disc, the structural strength of each blade is ensured through the reinforcing protrusions, the stability of the turbine shaft is ensured, the upper limit of the rotating speed is improved, and a plurality of arc-shaped grooves which are spaced apart from the blades are evenly arranged in the periphery of the disc and along the circumferential direction, on the one hand, the weight of the turbine shaft is reduced, the turbine shaft is not too heavy due to the reinforcing protrusions, and on the other hand, the airflow can better flow through the two blades. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the utility model;

[0013] Figure 2 It is an angle conversion structure schematic view of the utility model; Figure 1

[0014] Figure 3 It is a side view structural schematic view of the utility model;

[0015] Figure 4 It is a top view structural schematic view of the utility model;

[0016] Figure 5 It is a bottom view structural schematic view of the utility model.

[0017] In the drawing: main shaft 1, disc 2, blade 3, reinforcing protrusion 4, arc-shaped groove 5, sealing groove 6. DETAILED DESCRIPTION

[0018] The technical solutions of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model;

[0019] It should be noted that in the description of the utility model, it should be noted that the terms "inner", "outer", "upper", "lower", "two sides", "one end", "the other end", "left", "right" and the like indicate the orientation or positional relationship shown in the drawing, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0020] Please refer to​Figures 1-5 The utility model provides a kind of turbine shaft for turbocharger, including spindle 1 and impeller, spindle 1 one end coaxially is provided with impeller, spindle 1 and impeller are integrated structure, to ensure the structural strength of whole, and it is convenient to process directly, impeller includes wheel disc 2 and blade 3, wheel disc 2 is conical, the central position of wheel disc 2 is connected with spindle 1, the outside surface of wheel disc 2 is evenly provided with several blades 3 along the circumferential direction, wheel disc 2 and blade 3 are integrated structure, to ensure the connecting strength of wheel disc 2 and blade 3, and it is convenient to process directly, blade 3 is gradually curved from inside to outside, to realize the guidance of blade 3 to wind when turbine shaft rotates, blade 3 is provided with reinforcing protrusion 4 at the junction with wheel disc 2, the periphery of wheel disc 2 and evenly open several arc grooves 5 along the circumferential direction, arc groove 5 and blade 3 one-to-one correspond and interval distribution, wheel disc 2 is away from blade 3 one end to open several annular sealing grooves 6 with spindle 1 as center, when cooperating with the shell of turbocharger, the sealing between wheel disc 2 and the shell of turbocharger is guaranteed.

[0021] Processing method and principle: first, turbine shaft blank is prepared, then is processed by machining center, obtains turbine shaft with spindle 1 and impeller.In processing, reinforcing protrusion 4 is reserved at the root of blade 3, to ensure the structural strength of each blade 3, then arc groove 5 is opened in the periphery of wheel disc 2 and between two blades 3, at this time, arc groove 5 and blade 3 are spaced distribution, finally, several annular sealing grooves 6 are opened in the end of wheel disc 2 away from blade 3, and processing is completed.When using, the spindle 1 with impeller is installed in corresponding equipment such as compressor, turbine machinery, when high-speed rotating, air flow is generated by blade 3 to realize supercharging.The utility model structure is reasonable, reinforcing protrusion 4 is arranged at the junction of blade 3 and wheel disc 2, the structural strength of each blade 3 is guaranteed by reinforcing protrusion 4, to ensure the stability of turbine shaft, improve the upper limit of speed, but because reinforcing protrusion 4 is arranged, the total weight of turbine shaft increases, so several arc grooves 5 are evenly opened in the periphery of wheel disc 2 and along the circumferential direction, which are one-to-one spaced with blade 3, on the one hand, the weight of turbine shaft is reduced, and the turbine shaft is not too heavy due to the addition of reinforcing protrusion 4, on the other hand, air flow is better circulated between two blades 3.

[0022] The utility model is not detailed, all are the known technology of those skilled in the art.

[0023] Finally, it should be pointed out that: the above specific embodiments are only used to illustrate the technical scheme of the utility model and are not limited, although the utility model is described in detail with reference to the embodiments, those skilled in the art should understand that the technical scheme of the utility model can be modified and equivalent replaced without departing from the spirit and scope of the technical scheme of the utility model, which should be covered in the scope of claims of the utility model.

Claims

1. A turbine shaft for a turbocharger, characterized by: The utility model relates to a kind of impeller and main shaft, including main shaft (1) and impeller, the main shaft (1) one end coaxially is provided with impeller, the impeller includes wheel disc (2) and blade (3), the wheel disc (2) is conical, the center position of the wheel disc (2) is connected with main shaft (1), the outer surface of the wheel disc (2) is evenly provided with several blades (3) along the circumferential direction, the blade (3) and the connecting place of wheel disc (2) are provided with reinforcing protrusion (4), the periphery of the wheel disc (2) and the arc-shaped groove (5) of evenly being opened along the circumferential direction, the arc-shaped groove (5) and blade (3) one to one correspondence and interval distribution.

2. A turbine shaft for a turbocharger as defined in claim 1, characterized in that: The wheel disc (2) is away from the blade (3) one end to open with several annular sealing grooves (6) with main shaft (1) as center.

3. A turbine shaft for a turbocharger as defined in claim 1, wherein: The main shaft (1) and impeller are integrated structure.

4. A turbine shaft for a turbocharger as defined in claim 1, wherein: The wheel disc (2) and blade (3) are integrated structure.

5. A turbine shaft for a turbocharger as defined in claim 1, wherein: The blade (3) is gradually curved from inside to outside.

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