Systems and methods for repairing chains
AssigneeRexnord Industries, LLC
InventorsJoseph Leo Vento, David Richard Woods, Kyle Steven Jansson
Life of this patent
Estimating the term…
Abstract
A method of repairing a chain can include aligning a bore of an outer chain link with a bore of an inner chain link, inserting a pin through the aligned bores, the pin having a thread end opposite a head end, engaging a multi-jackbolt tensioner with the thread end of the pin, the multi-jackbolt tensioner having a plurality of fasteners, advancing each of the plurality of fasteners to press on the outer chain link, and forming an interference fit between the pin and the outer chain link at the bore of the outer chain link from the advancing of the fasteners.
Claims20
A chain repair system comprising:
- an inner chain link and an outer chain link each having a respective pair of bores;
- a pin including:
- a head end that defines a head;
- a thread end opposite the head end having threads;
- and
- a notch directed into a surface of the pin deeper than the threads of the pin, the notch being located between the head end and the thread end;
- a multi-jackbolt tensioner including:
- a plurality of fasteners;
- a press plate having a centrally located hole;
- and
- a plurality of other holes that surround the centrally located hole that are threaded, each fastener being configured to be received through and threadingly engaged with a respective hole of the plurality of other holes, and
- the multi-jackbolt tensioner is configured to engage the pin and is configured to be externally positioned relative to the outer chain link, and
- the multi-jackbolt tensioner is configured to create an interference fit between the pin and the outer chain link at the bore of the outer chain link.
A method for repairing a chain, the method comprising:
- aligning a bore of an outer chain link with a bore of an inner chain link;
- inserting a pin through the aligned bores, the pin having a thread end opposite a head end;
- engaging a multi jackbolt tensioner with the thread end of the pin, the multi-jackbolt tensioner having a plurality of fasteners;
- advancing each of the plurality of fasteners to press on the outer chain link;
- forming an interference fit between the pin and the outer chain link at the bore of the outer chain link from the advancing of the fasteners.
A pin for repairing a chain that has an outer chain link and an inner chain link using a chain repair system, the pin comprising:
- a body having a first cross-section that is uniform throughout a length of the body;
- a head coupled to one of the body, the head having a larger cross-section than the first cross-section of the body;
- and
- an extension coupled to an opposing end of the body, the extension having a first threaded section, a second threaded section, and a notch that is located between the first threaded section and the second threaded section, the notch being directed into a surface of the pin deeper than the threads of the first and second threaded sections of the pin,
- the body of the pin is configured to form an interference fit with the outer chain link at a bore of the outer chain link to couple the outer chain link to the pin, and
- the pin is configured to fracture at the notch to decouple the first threaded section from the pin.
Dependencies are inferred from the claim text.