Adjustable guide device

Abstract

A guide device with adjustable guide vanes is provided with a drive for the adjustable guide vanes, in which a cylindrical driving pin and an adjusting lever are provided each with one surface pair which are matched to one another and which slide on one another in operation when the guide vanes are being adjusted. To adjust the guide vanes, the adjusting ring is moved, by which the driving pin attached to the adjusting ring slides in an elongated groove of the adjusting lever and applies a force to the adjusting lever. This approach yields an economical and durable structure which is easy to install. This results in surface support with the corresponding low compressive loads per unit area and consequently greatly reduced wear.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Various embodiments of the invention are detailed below using the drawings.

FIG. 1 shows a section routed along the axis through a radial turbine with an exemplary adjustable guide device,

FIG. 2 shows a section perpendicular to the axis through the adjustable guide device of the radial turbine as shown in FIG. 1,

FIG. 3 shows a section routed along the axis through a radial compressor with an exemplary adjustable guide device,

FIG. 4 shows a section perpendicular to the axis through the adjustable guide device of the radial compressor as shown in FIG. 3,

FIG. 5 shows an isometric detail of an exemplary guide device with an adjusting lever and a driving pin, and

FIG. 6 shows three different exemplary embodiments of the driving pin as shown in FIG. 5.

Claims

1. Device for transmitting an adjustment force from an adjusting ring to a vane shaft of a pivotally mounted guide vane of an adjustable guide device, comprising an adjusting lever and a driving pin which can be connected to the adjusting ring, the adjusting lever on one end being connectable to the vane shaft of a pivotally mounted guide vane of an adjustable guide device, and an elongated groove for holding the driving pin being inlet into the other end of the adjusting lever, the driving pin and the groove each having two contact surfaces, and the contact surfaces of the driving pin and the contact surfaces of the groove each being matched in pairs to one another, and the driving pin having a cylindrical shape, and the contact surfaces being formed by recesses in the jacket surface of the cylindrical driving pin.

2. Device as claimed in claim 1, wherein the recesses in the jacket surface of the driving pin have a rectangular or a rounded or a V-shaped profile.

3. Device as claimed in claim 1, wherein the two recesses of the jacket surface of the driving pin have different profiles.

4. Device as claimed in claim 1, wherein the contact surfaces of the groove and/or the contact surfaces of the driving pin are hardened or coated with a sliding aid.

5. Guide device with adjustable guide vanes, which guide vanes are each connected to a pivotally mounted vane shaft and can be pivoted around the vane shaft with an adjusting lever which is driven via an adjusting ring, which acts on the vane shaft, and which is connected to the vane shaft.

6. Guide device, comprising adjustable guide vanes with a pivotally mounted vane shaft; one adjusting lever acting on the vane shaft per guide vane; an adjusting ring for driving the adjusting lever; and one cylindrical driving pin which can be connected to the adjusting lever and which is pivotally mounted in the adjusting ring per adjusting lever; the adjusting levers each being connected on one end to the vane shaft of a guide vane, and an elongated groove for holding the respective driving pin being inlet into the other end of the adjusting lever, the driving pin and the groove each having two contact surfaces, the contact surfaces of the driving pin and the contact surfaces of the groove each being matched in pairs to one another, and the contact surfaces in the driving pin being formed by recesses in the jacket surface of the cylindrical driving pin.

7. Guide device as claimed in claim 6, wherein the driving pin is pivotally mounted in the holes of the adjusting ring.

8. Compressor with a diffusor with adjustable diffusor vanes, wherein the diffusor comprises a guide device as claimed in claim 6.

9. Exhaust gas turbine, comprising a guide device as claimed in claim 6.

10. Exhaust gas turbocharger, comprising a compressor as claimed in claim 8.

11. Exhaust gas turbocharger, comprising an exhaust gas turbine as claimed in claim 9.

12. Exhaust gas turbocharger, comprising a compressor with a diffusor having adjustable diffusor vanes and an exhaust gas turbine as claimed in claim 9.

13. The device as claimed in claim 2, wherein at least one of the contact surfaces of the groove and the contact surfaces of the driving pin are hardened or coated with a sliding aid.

14. Device as claimed in claim 3, wherein at least one of the contact surfaces of the groove and the contact surfaces of the driving pin are hardened or coated with a sliding aid.

15. The compressor with a diffusor with adjustable diffusor vanes, wherein the diffusor comprises a guide device as claimed in claim 7.

16. An exhaust gas turbine, comprising a guide device as claimed in claim 7.