Method for Horizontally Winding and Unwinding a Parallel Wire Strand

Abstract

A method for horizontally winding and horizontally unwinding parallel steel wire strands for transport, storage or installation comprises the following steps: when performing the winding operation, a guiding frame ( 1 ) is mounted on the ground, a rotating platform is connected with a rotating shaft ( 21 ), the leading end of the wire stranded is passed through the guiding rollers ( 17 ) and then is fixed on an inner module ( 4 ), and the platform ( 2 ) is rotated around the shaft ( 21 ); when performing the unwinding operation, the guiding frame ( 1 ) is mounted on the ground and one end of the winded stranded wire is pulled out from the guiding rollers ( 17 ).

1 . A method for horizontally winding and horizontally unwinding a parallel wire strand upon a base of a cable reel for transport, storage or installation, a parallel wire strand made up of a plurality of tightly adjacent vertically and horizontally arranged parallel wires, the strand including at least a leading end fitting securing the ends of the wires together, the method is characterized in that it comprises the steps of:
 (a) Performing the winding operation, the operation procedure is as follows:   Fix the guide frame ( 1 ) on the ground, the guide frame ( 1 ) is composed by the base ( 11 ), support frame ( 12 ), electric hoist ( 13 ), fixed pulley ( 14 ), steel wire rope ( 15 ), lifting mechanism ( 16 ), roller ( 17 ), the pressure sensor ( 181 ), speed encoder ( 182 ), altimeter encoder ( 183 ) and limit roller ( 19 ); Fix the base ( 1 ) on the ground and fix the support frame ( 12 ) and electric hoist ( 13 ) on the base ( 1 ); A fixed pulley ( 14 ) is equipped at the top of the support frame, also a steel wire rope ( 15 ) which one end is connected with electric hoist ( 13 ) and the other end is connected with lifting mechanism ( 16 ) is winded on the fixed pulley ( 14 ); The lifting mechanism ( 16 ) is equipped with three rollers ( 17 ), 2 pressure sensors ( 181 ) and a speed encoder ( 182 ), the 3 rollers ( 17 ) are arranged in a “ ” shape, that is, three straight lines connecting the circle center points of three rollers make up of a trigon; A pressure sensor ( 181 ) and a speed encoder ( 182 ) are equipped at one side of the three rollers, at the side of the fixed pulley ( 14 ), altimeter encoder ( 183 ), electric hoist ( 13 ), pressure sensor ( 181 ), speed encoder ( 182 ) are equipped; Both the speed encoder ( 182 ) and the altimeter encoder ( 183 ) are connected with PLC by the telecommunication wires; Fix the rotation axis ( 21 ) on the ground at one side of the guide frame ( 1 ), connecting the rotation platform ( 2 ) with the rotation axis, meantime, the rotating platform ( 2 ) will rotate about the rotation axis ( 21 ); The upper surface of the rotation platform ( 2 ) shall be flush with the ground, the platform rail ( 22 ) is paved on the rotation platform and the railcar ( 3 ) is located on the rail ( 22 ); Three straight lines connecting the circle center points of three rollers make up of a trigon; the characteristics of rotation platform facilities rail platform car easy to select multi-directions and link up with workshop rails;   The inner module ( 4 ) is composed by at least four support plates ( 41 ) and the support rod ( 42 ) at the top section, the four support plates ( 41 ) was aligned uniformly in the ring shape. There are gaps between the adjacent support plates ( 41 ), the gap length shall be the width of the support plate ( 41 ) of 80% to 150%; Operator can get into the inner module to operate through gaps between support plates; The support rod ( 42 ) shall be fixed by the hinge at the top of the support plate ( 41 ), each support plate ( 41 ) shall be fixed two support rods and the two top of the rod ( 42 ) shall be symmetrically fixed on the support plate ( 41 ) at left and right sides; The supporting plate ( 41 ) and the railcar ( 3 ) is connected by the bolt; The top of support plate ( 41 ) will lean outward; After fixing the support plate ( 41 ) and railcar ( 3 ), the centers of gravity of four support plates should be located outside of each hinge,   Put a ring shape tray ( 5 ) onto the railcar ( 3 ) and hitch it outside the inner module ( 4 ); Lifting points which are used for lifting the tray and looped cable strands which are winded on the tray shall be set at the tray edges, and lay the water proof film cover on the surface of the tray ( 5 );   Put one end of strand ( 10 ) through the guide rollers ( 11 ) and fix it onto the inner module ( 4 ), then drive rotation platform ( 2 ) to rotate, which will drive the railcar ( 3 ) and inner module ( 4 ) to rotate together; Along with the rotation, the strand ( 10 ) will be winded on the inner module ( 4 ) one circle by another from the bottom end of the inner module ( 4 ) till to the top of the inner module ( 4 ), and then wind the strand ( 10 ) from the top of the inner module ( 4 ) to the bottom; Repeat this operation until all the strands ( 10 ) wrapped into wire strands; During the upward winding procedure, the PLC will control the electric hoist ( 13 ) to pull the steel wire rope, thus to lift the lifting mechanism ( 16 ) which will enable the guide roller ( 11 ) move upward with the distance which is equivalent to the strand ( 10 ) diameter during each circle; During the downward winding procedure, the PLC will control the electric hoist ( 13 ) to pull to steel wire rope ( 15 ), thus to pull down the lifting mechanism ( 16 ) which will enable the guide roller ( 11 ) move downward with the distance which is equivalent to the strand ( 10 ) diameter during each circle, therefore guarantee that strands are capable of arranging on the inner module ( 2 ) regularly and compactly;   After all the strands ( 10 ) are winded into wire strands, dismantle the bolts between the bottom of the inner module ( 4 ) and the railcar ( 3 ); Lift the support rod ( 42 ) on the inner module ( 4 ) which will make the 4 pieces support plates ( 41 ) gather together inward, and then extract the inner module ( 2 ) from the wire strand; After this, use the prepared waterproof film on the tray ( 5 ) to cover the whole outside surface of the wire strand ( 10 ); Connect the platform track ( 22 ) on the rotating platform ( 2 ) with the track on the ground, pull the railcar ( 3 ) to move the wire strand ( 10 ), until this winding operation is finished;   (b) Performing the unwinding operation, the operation procedure is as follows:   Fix the guide frame ( 1 ) on the ground, the guide frame ( 1 ) is composed by the base ( 11 ), support frame ( 12 ), electric hoist ( 13 ), fixed pulley ( 14 ), steel wire rope ( 15 ), lifting mechanism ( 16 ), roller ( 17 ), the pressure sensor ( 181 ), speed encoder ( 182 ), altimeter encoder ( 183 ) and limit roller ( 19 ). Fix the base ( 1 ) on the ground and fix the support frame ( 12 ) and electric hoist ( 13 ) on the base ( 1 ); A fixed pulley ( 14 ) shall be equipped at the top of the support frame ( 12 ), also the steel wire rope ( 15 ) whose one end is connected with electric hoist ( 13 ) and the other end is connected with lifting mechanism ( 16 ) shall be winded on the fixed pulley ( 14 ); The lifting mechanism ( 16 ) is equipped with 3 rollers ( 17 ), 2 pressure sensors ( 181 ) and a speed encoder ( 182 ); The 3 Roller ( 17 ) is arranged in a “ ” shape, that is, three straight lines connecting the circle center points of three rollers make up of a triangle; A pressure sensor ( 181 ) and a speed encoder ( 182 ) shall be equipped at one side of the three rollers, at the side of the fixed pulley ( 14 ), altimeter encoder ( 183 ), electric hoist ( 13 ), pressure sensor ( 181 ), speed encoder ( 182 ) shall be equipped; Both the speed encoder ( 182 ) and the altimeter encoder ( 183 ) shall be connected with PLC by the telecommunication wires; Fix the rotation axis ( 21 ) on the ground at one side of the guide frame ( 1 ), connecting the rotation platform ( 2 ) with the rotation axis, meantime, the rotating platform ( 2 ) will rotate around the rotation axis ( 21 ); The hydraulic brake ( 24 ) which is connected by pressure sensor and PLC is equipped in the rotation axis ( 21 ); During the rotation of the rotating platform ( 2 ), release the hydraulic brake ( 24 ); When the rotating platform stops, the hydraulic brake ( 24 ) is always imposing friction on the rotating platform ( 2 ), thus applying portion of reverse compression to prevent against rotating platform ( 2 ) continually rotating, bring about cable strand dropped out and damaged when dragging forces temporarily stop;   The inner module ( 4 ) is composed by at least four support plates ( 41 ) and the support rod ( 42 ); the four support plates ( 41 ) are aligned uniformly in the ring shape. The gaps shall be retained between the adjacent support plates ( 41 ), the gap length shall be the width of the support plate ( 41 ) of 80% to 150%; The bottoms of the support plates ( 41 ) are connected by the hinge with the rotating platform ( 2 ), all the 4 pieces support plates ( 41 ) will lean inward; In the middle of the 4 pieces support plates ( 41 ), a hydraulic jack ( 6 ) is equipped; The support rod of the hydraulic jack ( 6 ) is connected with four pieces push rods ( 61 ), and each push rod ( 61 ) shall withstand a piece of support plate ( 41 ),   Remove the waterproof film cover from the strand ( 10 ), lift the strand ( 10 ) wire strands together with the tray ( 5 ) onto the rotating platform ( 2 ), meantime, set the strand ( 10 ) wire strands over the inner module ( 4 ); Actuate the hydraulic jack ( 6 ), with the force of the support rod applied to the push rod, the 4 pieces support plates ( 41 ) will push outward by the push rod ( 61 ) which will fix the strand wire strands;   Pull one leading end of the strand ( 10 ) through out of the guide roller ( 11 ), then pull the strand ( 10 ) to drive the inner module ( 4 ) and the tray ( 5 ) to rotate, thus to drive the rotating platform ( 2 ) to rotate around the rotation axis; Along with this operation, the strand ( 10 ) shall be released and will become the straight status;   During the downward winding procedure, the PLC will control the electric hoist ( 13 ) to pull to steel wire rope, thus to pull down the lifting mechanism ( 16 ) which will enable the guide roller ( 11 ) move downward with the distance which is equivalent to the strand ( 10 ) diameter during each circle. During the upward winding procedure, the PLC will control the electric hoist ( 13 ) to pull the steel wire rope ( 15 ), thus to lift the lifting mechanism ( 16 ) which will enable the guide roller ( 11 ) move upward with the distance which is equivalent to the strand ( 10 ) diameter during each circle; Repeat these operations back and forth till the wire strands strand become straight status, and fulfill the whole unwinding operation.   
     
     
         2 . The method according to  claim 1 , wherein the rotation axis ( 21 ) is vertical to the ground at the side of the guide frame ( 1 ). 
     
     
         3 . The method according to  claim 1 , wherein in horizontal winding operation the bottom of the support plate ( 41 ) is connected with the railcar ( 3 ) by bolts, the top of the support plate ( 41 ) shall lean outward and the angle between the support plate ( 41 ) and upper surface of railcar is between 60°˜85°. 
     
     
         4 . The method according to  claim 1 , wherein in horizontal unwinding operation the bottom of the support plate ( 41 ) is connected with the rotating platform ( 2 ) by the hinge, all the 4 pieces support plate ( 41 ) will lean inward and the angle between the support plate ( 41 ) and upper surface of railcar is between 60°˜85°. 
     
     
         5 . The method according to  claim 2 , wherein in horizontal winding operation the bottom of the support plate ( 41 ) is connected with the railcar ( 3 ) by bolts, the top of the support plate ( 41 ) shall lean outward and the angle between the support plate ( 41 ) and upper surface of railcar is between 60°˜85°. 
     
     
         6 . The method according to  claim 2 , wherein in horizontal unwinding operation the bottom of the support plate ( 41 ) is connected with the rotating platform ( 2 ) by the hinge, all the 4 pieces support plate ( 41 ) will lean inward and the angle between the support plate ( 41 ) and upper surface of railcar is between 60°˜85°.