Fiber optic cable protection in a mining system
View Patent ↗A chain link assembly, a cable chain assembly and a mining system. The cable handler individual links may include an enclosed section for the fiber optic cable separate from other services for the machine. A flexible material or other structure may assemble the fiber optic cable in the cable handler in a manner in which it “snakes” about the centerline to provide ample slack in the fiber optic cable to, for example, prevent over tension.
1. A chain link assembly for a cable chain assembly in a mining machine, the cable chain assembly extending along an axis, the chain link assembly comprising:
a chain link having a plurality of walls cooperating to define a compartment opening in the direction of the axis, a centerline being defined between the plurality of walls and extending parallel to the axis, the chain link including a first projection and a second projection extending opposite the first projection, the chain link defining a length measured between the first projection and the second projection and parallel to the direction of the axis, a fiber optic cable being supportable in the compartment, a service line being supportable in the compartment; and
a flexible member supported in the compartment and engageable with the fiber optic cable, the flexible member having a length that is shorter than the length between the first projection and the second projection, the flexible member positioning the fiber optic cable toward one of the plurality of walls and away from the centerline at least when the fiber optic cable is in a slack state.
2. The chain link assembly of claim 1 , wherein the flexible member includes a compressible member supported on another of the plurality of walls opposite the one wall toward which the fiber optic cable is biased.
3. The chain link assembly of claim 2 , wherein the compressible member includes a hollow member having a first portion engageable with the fiber optic cable and a second portion engaging the opposite one of the plurality of walls.
4. The chain link assembly of claim 3 , wherein the hollow member has a substantially tubular cross section.
5. The chain link assembly of claim 1 , wherein the chain link further includes an internal wall dividing the compartment into a first compartment and a second compartment, the fiber optic cable being supportable in the first compartment, the service line being supportable in the second compartment.
6. The chain link assembly of claim 5 , wherein the internal wall is formed with the one of the plurality of walls and an opposite one of the plurality of walls.
7. The chain link assembly of claim 5 , wherein the internal wall is separate from and connected to the one of the plurality of walls and an opposite one of the plurality of walls.
8. The chain link assembly of claim 1 , wherein the flexible member has a surface engageable with the fiber optic cable, the surface including a low friction material.
9. The chain link assembly of claim 8 , wherein the surface is coated with the low friction material.
10. A chain link assembly for a cable chain assembly in a mining machine, the cable chain assembly extending along an axis, the chain link assembly comprising:
a chain link having a plurality of walls cooperating to define a compartment opening in the direction of the axis, the chain link including a first projection and a second projection extending opposite the first projection, the chain link defining a length measured between the first projection and the second projection and parallel to the direction of the axis, a fiber optic cable being supportable in the compartment, a service line being supportable in the compartment; and
a flexible member supported in the compartment and engageable with the fiber optic cable, the flexible member having a length that is shorter than the length between the first projection and the second projection, the flexible member positioning the fiber optic cable toward one of the plurality of walls,
wherein the chain link further includes an internal wall dividing the compartment into a first compartment and a second compartment, the fiber optic cable being supportable in the first compartment, the service line being supportable in the second compartment,
wherein the internal wall includes a connector, a portion of the flexible member being captured between the connector and an opposite one of the plurality of walls.
11. The chain link assembly of claim 10 , wherein the flexible member includes a compressible member supported on another of the plurality of walls opposite the one wall toward which the fiber optic cable is biased.
12. The chain link assembly of claim 11 , wherein the compressible member includes a hollow member having a first portion engageable with the fiber optic cable and a second portion engaging the opposite one of the plurality of walls.
13. The chain link assembly of claim 12 , wherein the hollow member has a substantially tubular cross section.
14. The chain link assembly of claim 10 , wherein the internal wall is formed with the one of the plurality of walls and an opposite one of the plurality of walls.
15. The chain link assembly of claim 10 , wherein the internal wall is separate from and connected to the one of the plurality of walls and an opposite one of the plurality of walls.
16. The chain link assembly of claim 10 , wherein the flexible member has a surface engageable with the fiber optic cable, the surface including a low friction material.
17. A cable chain assembly for a mining machine, the cable chain assembly extending along an axis, the assembly comprising:
a plurality of chain links each having a top wall, a bottom wall, and at least one side wall cooperating to define a compartment opening in the direction of the axis;
a fiber optic cable extending through the compartment in each of the plurality of chain links, the fiber optic cable extending generally along a wave-shaped path relative to the plurality of chain links;
a service line supportable in the compartment in each of the plurality of chain links;
a first member supported in the compartment of one of the plurality of chain links and engageable with the fiber optic cable, the first member positioning the fiber optic cable toward one of the walls of the one of the plurality of chain links; and
a second member supported in the compartment of a second one of the plurality of chain links and engageable with the fiber optic cable, the second member positioning the fiber optic cable toward one of the walls of the second one of the plurality of chain links;
wherein the first member and the second member cooperate to position the fiber optic cable along at least a portion of the wave-shaped path.
18. The cable chain assembly of claim 17 , wherein at least one of the first member and the second member is flexible.
19. The cable chain assembly of claim 18 , wherein each of the first member and the second member includes a compressible member supported on an opposite one of the first plurality of walls.
20. The cable chain assembly of claim 19 , wherein the compressible member includes a hollow member having a first portion engaging the fiber optic cable and a second portion engaging the opposite one of the first plurality of walls.
21. The cable chain assembly of claim 17 , wherein a third one of the plurality of chain links is connected between the one of the plurality of chain links and the second one of the plurality of chain links, the third one of the plurality of chain links not having a member in the compartment.
22. The cable chain assembly of claim 17 , wherein each of the plurality of chain links further include an internal wall dividing the compartment into a first compartment and a second compartment, the fiber optic cable being supported in the first compartment, the service line being supported in the second compartment.
23. The cable chain assembly of claim 17 , wherein the first member has a surface engageable with the fiber optic cable, the surface including a low friction material.
24. A chain link assembly for a cable chain assembly in a mining machine, the cable chain assembly extending along an axis, the chain link assembly comprising:
a chain link having a first wall, a second wall opposite the first wall, and a third wall extending between the first wall and the second wall, the first wall, second wall, and third wall cooperating to define a compartment opening in the direction of the axis, a centerline defined between the first wall, second wall, and third wall and extending parallel to the axis;
a fiber optic cable supportable in the compartment;
a service line supportable in the compartment;
a connector coupled to the third wall; and
a resilient member supported by the connector and engageable with the fiber optic cable, the resilient member having a portion engageable with the fiber optic cable, the resilient member positioning the fiber optic cable toward one of the first wall and the second wall and away from the centerline at least when the fiber optic cable is in a slack state.
25. The chain link assembly of claim 24 , wherein the resilient member is hollow and has a substantially tubular cross section.
26. The chain link assembly of claim 24 , wherein another portion of the resilient member is captured between the connector and the other of the first wall and the second wall.
27. The chain link assembly of claim 24 , wherein the third wall includes an internal wall dividing the compartment into a first compartment portion and a second compartment portion, the fiber optic cable being supportable in the first compartment portion, the service line being supportable in the second compartment portion.
28. The chain link assembly of claim 24 , wherein the portion of the resilient member has a surface engageable with the fiber optic cable, the surface including a low friction material.
29. The chain link assembly of claim 24 , wherein the chain link includes a first lug for coupling the chain link to an adjacent chain link and a second lug for coupling the chain link to another adjacent chain link, the chain link defining a length measured between the first lug and the second lug and parallel to the direction of the axis, and wherein the resilient member has a length that is shorter than the length between the first lug and the second lug.