Bowl mill transmission

• US 6,401,561 B1
• Filed: 04/19/2000
• Issued: 06/11/2002
• Est. Priority Date: 04/19/1999
• Status: Expired due to Term

• Current Assignee: RENK AG (RENK GmbH)
• Original Assignee: RENK AG (RENK GmbH)
• Inventors: Hösle, Helmut
• Primary Examiner(s): Herrmann, Allan D.
• Application Number:
  US09/552,121
• Time in Patent Office: 783 Days
• Field of Search: 744/20, 746/06.R, 241/117
• US Class Current: 74/420
• CPC Class Codes: B02C 15/006 Ring or disc drive gear arrangement
• CPC Class Codes: F16H 1/203 with non-parallel axes F16H1/22 takes precedence
• CPC Class Codes: Y10T 74/19674 Spur and bevel
• CPC Class Codes: Y10T 74/2186 Gear casings

Abstract

A bowl mill transmission which has a high overall transmission ratio with a large output torque, is of compact construction and is simple to assemble. The transmission being a vertically arranged bevel-gear stage for power input and a multi-stage transmission arrangement for power output into a thrust plate of the bowl mill crusher.

Claims

1. A bowl mill transmission, comprising:

a thrust plate;

a housing having a top part;

a vertically arranged bevel-gear stage for power input; and

a multi-stage transmission arrangement for power output into the thrust plate, the multi-stage transmission arrangement including a first transmission stage having a pinion, and a gear arranged on a gear shaft supported rotatably in the top part of the housing, the bevel-gear stage being arranged to input power via the pinion into the gear, the transmission arrangement further including a second transmission stage having an annulus rotationally fixed to the thrust plate and a further gear arranged in an axially offset position on the gear shaft so as to output power into the annulus.

2. A bowl mill transmission according to claim 1, wherein the bevel-gear stage is couplable to and decouplable from the transmission arrangement as a complete unit without removing the transmission arrangement.

3. A bowl mill transmission according to claim 2, wherein the bevel gear stage includes a bevel gear with a vertical shaft, and further comprising a rotationally fixed connection between the pinion and the vertical shaft of the bevel gear, the rotationally fixed connection being releasable.

4. A bowl mill transmission according to claim 3, wherein the rotationally fixed connection between the pinion and the vertical shaft of the bevel gear is a toothed coupling.

5. A bowl mill transmission according to claim 2, wherein the housing has a bottom part with a tunnel, the complete bevel-gear stage being configured so as to be insertable as a unit laterally into the tunnel in the bottom part of the housing.

6. A bowl mill transmission according to claim 2, and further comprising a flanged housing flanged to the top part of the housing, the bevel-gear stage being arranged in the flanged housing.

7. A bowl mill transmission according to claim 6, wherein the flanged housing has a plurality of parts so as to be partially disassemblable.

8. A bowl mill transmission according to claim 1, wherein the thrust plate and the top part of the housing have openings to provide access to the pinion.

9. A bowl mill transmission according to claim 1, wherein the annulus is press fit in a rotationally fixed manner by frictional engagement to the thrust plate.

10. A bowl mill transmission according to claim 9, wherein the annulus is connected in a rotationally fixed manner to the thrust plate by a form-fitting engagement in addition to the press fit.

11. The bowl mill transmission according to claim 1, wherein the thrust plate is guided radially by a radial bearing.

12. A bowl mill transmission according to claim 1, and further comprising a carrier of the gear and the further gear and thrust bearings integrated into the top part of the housing.

13. A bowl mill transmission according to claim 1, wherein the transmission arrangement is helically toothed.

14. A bowl mill transmission according to claim 1, wherein the pinion is connected in a manner which allows axial movement.

15. A bowl transmission according to claim 1, and further comprising a sensor operatively arranged to record axial force of a shaft of the pinion.

16. A bowl mill transmission according to claim 14, and further comprising a sensor operatively arranged to record axial force of a shaft of the pinion.