Retractable cable tray for vertical structures
First Claim
1. An extendable cable tray assembly for retractable attachment to a section of a mast of a drilling rig comprising:
- an upper tray connected to the mast in stationary relationship;
a center tray having a pivot end pivotally connected to the mast, and having an articulating end rotatable between a stowed position above the pivot end, and a deployed position below the pivot end;
the center tray positioned in offset relationship to the upper tray;
a lower tray having an upper end and a lower end;
the upper end of the lower tray being pivotally connected to the articulating end of the center tray;
the lower tray positioned in offset relationship to the center tray;
an actuator, pivotally connected between the mast and the center tray;
wherein retraction of the actuator results in retraction of the cable tray assembly to position the center tray substantially adjacent to the upper tray and adjacent the mast, and the lower tray substantially adjacent to the center tray and adjacent the mast; and
,wherein extension of the actuator results in deployment of the cable tray assembly to position the center tray substantially below and offset to the upper tray and the lower tray substantially below and offset to the center tray.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention discloses a cable tray assembly for a drilling rig or other vertical structure. In one embodiment, an extendable cable tray assembly is provided for retractable attachment to a section of a mast of a drilling rig. The cable tray assembly includes an upper tray connected to the mast in a stationary relationship. A center tray has a pivot end pivotally connected to the mast, and an articulating end rotatable between a stowed position and a deployed position below, and offset to, the upper tray. A lower tray has an upper end and a lower end. The upper end is pivotally connected to the articulating end of the center tray. The lower tray is movable between a stowed position and a deployed position below, and offset to, the center tray. An actuator is provided such that extension and retraction of the actuator results in deployment and retraction of the cable tray assembly.
46 Citations
18 Claims
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1. An extendable cable tray assembly for retractable attachment to a section of a mast of a drilling rig comprising:
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an upper tray connected to the mast in stationary relationship; a center tray having a pivot end pivotally connected to the mast, and having an articulating end rotatable between a stowed position above the pivot end, and a deployed position below the pivot end; the center tray positioned in offset relationship to the upper tray; a lower tray having an upper end and a lower end; the upper end of the lower tray being pivotally connected to the articulating end of the center tray; the lower tray positioned in offset relationship to the center tray; an actuator, pivotally connected between the mast and the center tray; wherein retraction of the actuator results in retraction of the cable tray assembly to position the center tray substantially adjacent to the upper tray and adjacent the mast, and the lower tray substantially adjacent to the center tray and adjacent the mast; and
,wherein extension of the actuator results in deployment of the cable tray assembly to position the center tray substantially below and offset to the upper tray and the lower tray substantially below and offset to the center tray. - View Dependent Claims (2, 3, 18)
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4. An extendable cable tray assembly for retractable attachment to a section of a mast of a drilling rig comprising:
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an upper tray connected to the mast in stationary relationship; a center tray having a pivot end pivotally connected to the mast, and having an articulating end rotatable between a stowed position above the pivot end, and a deployed position below the pivot end; the center tray positioned in offset alignment with the upper tray; a linkage assembly comprising; a first link having a first end pivotally connected to the mast and a second end, and, a second link having an upper end pivotally connected to the second end of the first link and a lower end pivotally connected to the center tray; a lower tray having an upper end and a lower end; the upper end of the lower tray pivotally connected to the articulating end of the center tray; an actuator, pivotally connected at one end to the mast, and pivotally connected at an opposite end to the linkage assembly; and
,wherein retraction of the actuator results in retraction of the cable tray assembly to position the center tray substantially adjacent to the upper tray and the lower tray substantially adjacent to the center tray. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An extendable cable tray assembly for retractable attachment to a section of a mast of a drilling rig comprising:
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an upper tray connected to the mast in stationary relationship; a center tray having a pivot end pivotally connected to the mast, and having an articulating end rotatable between a stowed position above the pivot end, and a deployed position below the pivot end; the center tray positioned in offset alignment with the upper tray; a linkage assembly comprising; a first link having a first end and a second end; and
,a second link having an upper end and a lower end; the first end of the first link pivotally connected to the mast; the second end of the first link pivotally connected to the upper end of the second link; the lower end of the second link pivotally connected to the center tray between the pivot end and the articulating end of the center tray; a lower tray having an upper end and a lower end; the upper end of the lower tray being pivotally connected to the articulating end of the center tray, in offset relationship; an actuator, pivotally connected between the mast and the linkage assembly; wherein retraction of the actuator results in retraction of the cable tray assembly to position the center tray substantially adjacent to the upper tray and the lower tray substantially adjacent to the center tray; and
,wherein extension of the actuator results in deployment of the cable tray assembly to position the center tray substantially below and offset to the upper tray and the lower tray substantially below and offset to the center tray.
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16. An extendable cable tray assembly for retractable attachment to a section of a mast of a drilling rig comprising:
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an upper tray connected to the mast in stationary relationship; a center tray having a pivot end pivotally connected to the mast, and having an articulating end rotatable between a stowed position above the pivot end, and a deployed position below the pivot end; the center tray positioned in offset alignment with the upper tray; a linkage assembly having a first link pivotally connected to the mast; a second link having an upper end pivotally connected to the first link, and a lower end pivotally connected to the center tray; a lower tray having an upper end and a lower end; the upper end of the lower tray pivotally connected to the articulating end of the center tray; an actuator, pivotally connected at one end to the mast, and pivotally connected at an opposite end to the linkage assembly; and
,wherein retraction of the actuator results in retraction of the cable tray assembly to position the center tray substantially adjacent to the upper tray and the lower tray substantially adjacent to the center tray.
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17. An extendable cable tray assembly for retractable attachment to a section of a mast of a drilling rig comprising:
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an upper tray, a center tray, and a lower tray; a first link, a second link, and an actuator; the upper tray connected to the mast in stationary relationship; a first pivot connection connecting the center tray to the mast; a second pivot connection connecting the center tray to the lower tray; a third pivot connection connecting the first link to the mast; a fourth pivot connection connecting the first link to the second link; a fifth pivot connection connecting the second link to the center tray; a sixth pivot connection connecting the actuator to the mast; and
,a seventh pivot connection connecting the actuator to the first link.
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Specification