Sealing array for a transmission, in particular for the output shaft of a transmission, and transmission having the sealing array

Patent metadata

Field	Value
Publication number	US-10900555-B2
Application number	US-202016859469-A
Country	US
Kind code	B2
Filing date	Apr 27, 2020
Priority date	Jan 26, 2015
Publication date	Jan 26, 2021
Grant date	Jan 26, 2021

Abstract

In a sealing array for a transmission, in particular for the output shaft of a transmission, and a transmission having a sealing array, a spacer ring is situated between a first and a second shaft-sealing ring, a flange part is connected to the coupling flange, in particular by screws, and a coupling flange presses the second shaft-sealing ring against the spacer ring, the spacer ring presses on the first shaft-sealing ring so that the first shaft-sealing ring is positioned against a flange part. The flange part, the coupling flange, the first shaft-sealing ring, the spacer ring, and the second shaft-sealing ring are arranged as a pre-assembled unit, and thus, in particular, as a transportable, integrated unit.

First claim

What is claimed:

1. A sealing array for a transmission, comprising:
a first shaft-sealing ring;
a second shaft-sealing ring; and
a spacer ring adapted to be arranged between the first shaft-sealing ring and the second shaft-sealing ring;
wherein the sealing array is adapted to be arranged between a flange part and a coupling flange screw-connectable to the flange part and adapted to press the second shaft-sealing ring against the spacer ring to press the spacer ring against the first shaft-sealing ring and the first shaft-sealing ring against the flange part.

2. The sealing array according to claim 1 , wherein the first shaft-sealing ring, the spacer ring, and the second shaft-sealing ring are adapted to be arranged as a pre-assembled unit with the flange part and the coupling flange.

3. The sealing array according to claim 2 , wherein the pre-assembled unit is arranged as a transportable and integrated unit.

4. The sealing array according to claim 1 , wherein the sealing array is arranged as a sealing array for an output shaft of the transmission.

5. The sealing array according to claim 1 , wherein the flange part and the coupling flange delimit an annular groove having a first side wall adapted to contact the first shaft-sealing ring and an opposite side wall adapted to contact the second shaft-sealing ring.

6. The sealing array according to claim 1 , wherein a contact surface of the first shaft-sealing ring and a contact surface of the second shaft-sealing ring are adapted to be arranged on a cylinder liner screw-connected to a shaft.

7. The sealing array according to claim 6 , wherein the second shaft-sealing ring is adapted to delimit, with the flange part, the coupling flange, the cylinder lining, and/or the shaft, a space region adapted to be acted upon by pressurized air.

8. The sealing array according to claim 7 , wherein the coupling flange is adapted to supply the pressurized air therethrough.

9. The sealing array according to claim 1 , wherein a radial extension of the spacer ring is smaller than a radial extension of the first shaft-sealing ring and/or the second shaft-sealing ring.

10. The sealing array according to claim 9 , wherein a grease chamber is formed in an axial region between the smaller radial extension of the spacer ring and the radial extension of the first shaft-sealing ring and/or the second shaft-sealing ring.

11. The sealing array according to claim 10 , wherein the grease chamber is adapted to be filled with grease.

12. The sealing array according to claim 1 , wherein a radial extension of the spacer ring is smaller than a radial extension of the first shaft-sealing ring and the second shaft-sealing ring.

13. The sealing array according to claim 12 , wherein a grease chamber is formed in an axial region between the smaller radial extension of the spacer ring and the radial extension of the first shaft-sealing ring and the second shaft-sealing ring.

14. The sealing array according to claim 13 , wherein the grease chamber is adapted to be filled with grease.

Assignees

• Sew Eurodrive Gmbh & Co

Inventors

• Reineberg Martin
• Barton Peter

Classifications

• F16J15/16

  between relatively-moving surfaces (F16J15/50, F16J15/52 take precedence; bellows pistons F16J3/06; piston-rings or ring sealings of similar construction F16J9/00) · CPC title

• F16J15/002 Primary

  comprising at least two sealings in succession (F16J15/162, F16J15/40 take precedence) · CPC title

• F16H57/029 Primary

  characterised by means for sealing the gearboxes, e.g. to improve airtightness · CPC title

• F16J15/32

  with elastic sealings, e.g. O-rings · CPC title

• F16J15/3204

  with at least one lip · CPC title