Rotating machine coupling hub pulling device

Patent metadata

Field	Value
Publication number	US-11267087-B2
Application number	US-201916717847-A
Country	US
Kind code	B2
Filing date	Dec 17, 2019
Priority date	Dec 17, 2019
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

An assembly for separating a coupling hub from a shaft of a rotating machine includes a support frame sub-assembly that structurally supports the assembly and the coupling hub. A vertical adjustment sub-assembly is structurally supported by the support frame sub-assembly. The vertical adjustment sub-assembly adjusts the elevation of a puller sub-assembly from the surface of the Earth. The puller sub-assembly couples to the coupling hub and separates the coupling hub from the shaft.

First claim

The invention claimed is:

1. A hub pulling assembly configured to separate a coupling hub coupled to a shaft of a rotating machine, the assembly comprising:
a support frame sub-assembly configured to structurally support the hub pulling assembly and the coupling hub;
a puller sub-assembly configured to couple to the coupling hub and to separate the coupling hub from the shaft, the puller sub-assembly comprising:
a first puller arm comprising a first puller arm coupling hub holding end configured to mechanically engage a coupling hub first side, and a chain lock bracket;
a second puller arm comprising a second puller arm coupling hub holding end mechanically arranged to engage a coupling hub second side, wherein the coupling hub second side opposes the coupling hub first side;
a puller bar mechanically coupled to the first puller arm and the second puller arm, the puller bar comprising a screw adjustment body;
a pusher stud configured to rotatably couple with the puller bar screw adjustment body, a pusher stud first end configured to mechanically couple with the shaft attached to the coupling hub, and a pusher stud second end configured to accept a hand tool; and
a chain mechanically coupled to the chain lock bracket, wherein the chain mechanically locks the first puller arm and the second puller arm to the coupling hub; and

a vertical adjustment sub-assembly mechanically coupled to the puller sub-assembly, the vertical adjustment sub-assembly structurally supported by the support frame sub-assembly, the vertical adjustment sub-assembly configured to adjust an elevation of the puller sub-assembly from a surface of the Earth.

2. The hub pulling assembly of claim 1 , wherein the puller sub-assembly is configured to cause the coupling hub to move along an axis of the shaft.

3. The hub pulling assembly of claim 1 , wherein the vertical adjustment sub-assembly further comprises:
a plurality of vertical adjustment bars, a vertical adjustment bar movably coupled to the puller sub-assembly, the puller sub-assembly constrained to move in a vertical axis by a vertical bar; and
a winch mechanically coupled to the support frame sub-assembly and the puller sub-assembly, the winch configured to move the puller sub-assembly in a vertical direction.

4. The hub pulling assembly of claim 1 , wherein the support frame further comprises:
a base plate configured to support the hub pulling assembly;
a plurality of vertical legs attached to the base plate;
a center frame member, the center member having a center member first end and a center member second end, the center member configured to accept a winch;
a first frame member coupled perpendicular to the center frame member first end, the first frame member also coupled to a first subset of the vertical legs; and
a second frame member coupled perpendicular to the center frame member second end in a same plane as the first frame member, the second frame member also coupled to a second subset of the vertical legs.

5. The hub pulling assembly of claim 1 , the support frame further comprises an angular support leg mechanically coupled to a front side of the support frame sub-assembly, the angular support leg configured to prevent support frame movement to the front side.

6. The hub pulling assembly of claim 1 , further comprising a coupling hub holding sub-assembly configured to hold the coupling hub once separated from the shaft comprising:
a chain hoist or a lever hoist mechanically coupled to the support frame sub-assembly; and
an eye bolt mechanically coupled to the coupling hub, the chain hoist mechanically coupled to the eye bolt.

7. A method comprising:
structurally supporting, by a support frame sub-assembly, an assembly configured to separate a coupling hub from a shaft;
adjusting, by a vertical adjustment sub-assembly mechanically coupled to the support frame and vertically relative to a surface of the Earth, a puller sub-assembly relative to the coupling hub, the puller sub-assembly mechanically coupled to the support frame sub-assembly;
coupling, by the puller sub-assembly, a plurality of puller arms of the puller sub-assembly to the coupling hub and a pusher stud of the puller sub-assembly to the shaft, wherein coupling, by the puller sub-assembly, a plurality of puller arms of the puller sub-assembly to the coupling hub and a pusher stud of the puller sub-assembly to the shaft comprises:
coupling a first puller arm coupling hub holding end to a coupling hub first side;
coupling a second puller arm coupling hub holding end to a coupling hub second side, wherein the coupling hub second side opposes the coupling hub first side;
locking a chain around the first puller arm coupling hub holding end and the second puller arm coupling hub holding end; and
seating the pusher stud against the shaft; and

separating, by the puller sub-assembly, the coupling hub from the shaft by an axial movement of the plurality of puller arms along an axis of the shaft by rotating the pusher stud with a hand tool causing the coupling hub to move along an axis of the shaft.

8. The method of claim 7 , wherein vertically adjusting the puller sub-assembly further comprises:
operating a winch attached to the support frame sub-assembly to vertically adjust the puller sub-assembly.

9. The method of claim 7 , further supporting the coupling hub assembly by engaging an angular support leg mechanically coupled to a front side of the support frame sub-assembly.

10. The method of claim 7 , further comprising supporting the coupling hub by a chain hoist or a lever hoist attached to an eye bolt on the coupling hub.

11. A hub pulling assembly configured to separate a coupling hub coupled to a shaft of a rotating machine, the assembly comprising:
a support frame sub-assembly configured to structurally support the hub pulling assembly and the coupling hub, the support frame sub-assembly further comprising a plurality of vertical legs, a center frame member configured to accept a winch, a first frame member coupled perpendicular to the center frame member and also coupled to a first subset of the vertical legs, a second frame member coupled perpendicular to the center frame member in a same plane as the first frame member and also coupled to a second subset of the vertical legs;
a puller sub-assembly configured to couple to the coupling hub and to separate the coupling hub from the shaft, the puller sub-assembly further comprising a first puller arm comprising a first puller arm coupling hub holding end configured to mechanically engage the coupling hub first side, a second puller arm comprising a second puller arm coupling hub holding end mechanically arranged to engage a coupling hub second side, a puller bar mechanically coupled to the first puller arm, the second puller arm, and the vertical adjustment sub-assembly, and a pusher stud mechanically coupled to the puller bar, and a puller arm lock; and
a vertical adjustment sub-assembly mechanically coupled to the puller sub-assembly, the vertical adjustment sub-assembly structurally supported by the support frame sub-assembly, the vertical adjustment sub-assembly configured to adjust an elevation of the puller sub-assembly from a surface of the Earth, the puller sub-assembly constrained to move in a vertical axis.

12. The hub pulling assembly of claim 11 , wherein the puller sub-assembly is configured to cause the coupling hub to move along an axis of the shaft.

13. The hub pulling assembly of claim 11 , the support frame further comprises an angular support leg mechanically coupled to a front side of the support frame sub-assembly, the angular support leg configured to prevent

Assignees

• Saudi Arabian Oil Co

Inventors

• Thomas Nishan Xavier Chammany
• Alhaykan Moath A

Classifications

• B23P19/025 Primary

  For detaching only · CPC title

• B66C1/10

  by mechanical means · CPC title

• B66C5/10

  Portals, i.e. essentially circular or square platforms with three or more legs specially adapted for supporting slewing jib cranes · CPC title

• B25H1/0021

  Stands, supports or guiding devices for positioning portable tools or for securing them to the work (B23B41/00 takes precedence) · CPC title

• B25B27/023

  using screws · CPC title