Combined stator wedge driver and bar jacking tool

• US 9,973,063 B2
• Filed: 10/09/2015
• Issued: 05/15/2018
• Est. Priority Date: 10/09/2015
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Friot, Darren, Schumacher, David Robert
• Primary Examiner(s): Kim, Paul D
• Application Number:
  US14/879,200
• Publication Number:
  US 20170104396A1
• Time in Patent Office: 949 Days
• CPC Class Codes: H02K 15/0018 Applying slot closure means in the core; Manufacture of slot closure means
• CPC Class Codes: H02K 15/063 Windings for large electric machines, e.g. bar windings windings consisting of cables H02K15/065

Abstract

The present application provides a combined stator wedge driver and bar jacking tool for positioning a stator bar and a stator wedge into place along a slot of a stator core. The combined stator wedge driver and bar jacking tool may include a bar jacking tool to drive the stator bar into the slot and a stator wedge driver to drive the stator wedge on top of the stator bar in the slot. The bar jacking tool and the stator wedge driver extend from a common housing.

Claims

1. A combined stator wedge driver and bar jacking tool for positioning a stator bar and a stator wedge into place along a slot of a stator core, comprising:

a bar jacking tool to drive the stator bar into the slot, wherein the bar jacking tool comprises a bar hydraulic cylinder, a bar ram driven by the bar hydraulic cylinder, and a pair of anchor jaws operable by the bar ram;

a stator wedge driver to drive the stator wedge on top of the stator bar in the slot; and

the bar jacking tool and the stator wedge driver extending from a common housing.

2. The combined stator wedge driver and bar jacking tool of claim 1, wherein the bar ram extends through the common housing.

3. The combined stator wedge driver and bar jacking tool of claim 1, wherein the slot comprises a groove therein and wherein the pair of anchor jaws comprises a hook sized to accommodate the groove.

4. The combined stator wedge driver and bar jacking tool of claim 1, wherein the stator wedge driver comprises a wedge driver hydraulic cylinder.

5. The combined stator wedge driver and bar jacking tool of claim 4, wherein the stator wedge driver comprises a wedge driver ram driven by the wedge driver hydraulic cylinder.

6. The combined stator wedge driver and bar jacking tool of claim 5, wherein the stator wedge driver comprises a driving block driven by the wedge driver hydraulic cylinder and the wedge driver ram.

7. The combined stator wedge driver and bar jacking tool of claim 1, wherein the stator wedge driver drives a stator slide between the stator bar and the stator wedge.

8. The combined stator wedge driver and bar jacking tool of claim 1, wherein the stator wedge driver drives a stator strip between the stator bar and the stator wedge.

9. The combined stator wedge driver and bar jacking tool of claim 1, wherein the stator wedge driver drives a stator ripple spring between the stator bar and the stator wedge.

10. The combined stator wedge driver and bar jacking tool of claim 1, wherein the stator wedge driver drives a stator slide, a stator strip, and a stator ripple spring between the stator bar and the stator wedge.

11. The combined stator wedge driver and bar jacking tool of claim 1, wherein the stator wedge driver drives a plurality of stator wedges into place along the slot.

12. A method of positioning a stator bar and a stator wedge into place along a slot of a stator core, comprising:

positioning a combined stator wedge driver and bar jacking tool about the slot;

hydraulically driving the stator bar into the slot via a bar jacking tool of the combined stator wedge driver and bar jacking tool, wherein the bar jacking tool comprises a bar hydraulic cylinder, a bar ram driven by the bar hydraulic cylinder, and a pair of anchor jaws operable by the bar ram; and

hydraulically driving the stator wedge on top of the stator bar in the slot via a stator wedge driver of the combined stator wedge driver and bar jacking tool.

13. A combined stator wedge driver and bar jacking tool for positioning a stator bar and a stator wedge into place along a slot of a stator core, comprising:

a hydraulic bar jacking tool to drive the stator bar into the slot, wherein the hydraulic bar jacking tool comprises a bar hydraulic cylinder, a bar ram driven by the bar hydraulic cylinder, and a pair of anchor jaws operable by the bar ram;

a hydraulic stator wedge driver to drive the stator wedge on top of the stator bar in the slot; and

the hydraulic bar jacking tool and the hydraulic stator wedge driver extending from a common housing.

14. The combined stator wedge driver and bar jacking tool of claim 13, wherein the bar ram extends through the common housing.

15. The combined stator wedge driver and bar jacking tool of claim 13, wherein the hydraulic stator wedge driver comprises a wedge driver ram and a driving block.

16. The combined stator wedge driver and bar jacking tool of claim 13, wherein the hydraulic stator wedge driver drives a stator slide, a stator strip, and a stator ripple spring between the stator bar and the stator wedge.