Patent ID: 8577627
Filing Date: 2013-11-05
Classification: B65H,G01L,G01M,G01N

Abstract:
1. A hydraulic operated system for testing cable under tension, the system comprising: a. a first storage reel for paying out a cable to be tested; b. a first moveable sheave in series with a second moveable sheave, wherein the first moveable sheave is rotated by a first hydraulic drive, wherein the second moveable sheave is rotated by a second hydraulic drive, and wherein the first moveable sheave receives the cable from the first storage reel and passes the cable to the second moveable sheave; c. a third moveable sheave in series with a fourth moveable sheave, wherein the third moveable sheave is rotated by a second hydraulic drive, wherein the third moveable sheave is in parallel with the second moveable sheave, wherein the fourth moveable sheave is rotated by the first hydraulic drive, and wherein the fourth moveable sheave is in parallel with the first moveable sheave; d. a first clutch for connecting the second moveable sheave to the third moveable sheave, wherein the first clutch is operable by the second hydraulic drive, and wherein the first clutch disengages the second moveable sheave from the third moveable sheave; e. a second clutch connecting the first moveable sheave to the fourth moveable sheave, wherein the second clutch is operable by the first hydraulic drive, and wherein the second clutch disengages the first moveable sheave from the fourth moveable sheave; f. a clutch controller for controlling the first clutch and the second clutch, wherein the clutch controller is in communication with a power source; g. a moveable tensioning sheave connected to at least one of the hydraulic drives, wherein the moveable tensioning sheave comprises a load measuring sensor and a speed detector, wherein the moveable tensioning sheave receives the cable from the second moveable sheave, wherein the load measuring sensor measures a load on the cable forming a load signal, wherein the speed detector measures a speed of the cable forming a speed signal, wherein the moveable tensioning sheave passes the cable to the third moveable sheave which sequentially passes the cable to the fourth moveable sheave; h. a processor in communication with the moveable tensioning sheave for receiving the load signal and the speed signal; i. a data storage in communication with the processor; j. computer instructions in the data storage for storing preset stress data for the cable; k. computer instructions in the data storage for comparing received load signals and received speed signals to the stored preset stress data, and forming compared signals; l. computer instructions in the data storage for providing a notification when the compared signals exceed or fall below the stored preset stress data; m. computer instructions in the data storage for displaying the compared signals, the notification, or combinations thereof; and n. a second storage reel for receiving the cable from the fourth moveable sheave, wherein each moveable sheave comprises grooves for receiving the cable, wherein each groove contains the cable in parallel to transfer the cable from one moveable sheave to another moveable sheave, and wherein each groove is tilted in part, thereby enabling at least two opposing grooves to be aligned at bottoms of the moveable sheaves, but to be offset at tops of the moveable sheaves to facilitate transfer of the cable without sliding the cable on a face of each moveable sheave.