Automatic rope arrangement control device for roller
Technical field
The invention belongs to cylinder row rope control technology field, be specifically related to a kind of Automatic rope arrangement control device for roller, applicable oil producing operation technical field, be also applicable to the various industrial circles using cylinder to promote simultaneously.
Background technology
When oil field pumping, oil producing operation, need power tool to be completed in well by steel rope promote and transfer operating mode.According to well depth requirement, cylinder is furnished with the steel rope of thousands of meters.During operation, if steel rope in cylinder last layer layer ground marshalling, just can not there will be disorder cable, stings rope phenomenon, have a strong impact on rope service-life and job safety.
Current most of producer adopts machinery row rope, and namely cylinder uses mechanical drive to rope winding jib, drives positive and negative leading screw to rotate, completes movement and the automatic reverse of rope winding jib.Although the method structure is simple, the impact of accumulated error cannot be eliminated, manually must participate in adjustment.
Also have the rope arranging automatically system adopting hydraulic pressure and automatically controlled combination, but its shortcoming is system, and Volumetric efficiency error that is numerous and diverse and hydraulic pressure is large, well can not realize rope arranging automatically.
Summary of the invention
The object of this invention is to provide a kind of Automatic rope arrangement control device for roller, make neat being wound on cylinder of the steel rope of operation, and do not need manual intervention in whole operation process, realize automation completely.
For achieving the above object, the technical solution used in the present invention is: this Automatic rope arrangement control device for roller, there is rope winding jib support, mobile support saddle to be connected on rope winding jib support by guide rail and to be coordinated by leading screw mobile, mobile support saddle is provided with correction frame, it is characterized in that: described rope winding jib support is provided with servomotor, servomotor exports and connects leading screw, servomotor is controlled by servo-control unit, servo-control unit is connected with PLC, tachogen is arranged on cylinder, tachogen output speed signal, control servomotor through PLC and servo-control unit to rotate, rope winding jib support both sides are provided with the change-over swith controlling servomotor, described correction frame is provided with deviation-correcting switch, deviation-correcting switch signal makes servomotor accelerate by PLC and servo-control unit or stops, correct drift angle to upright position.
Described correction frame is triangular in shape, and its upper end thereof is on mobile support saddle, and correction frame is fixed with driving lever, and the direction that driving lever is arranged is consistent with steel rope direction.
When operating drum rotating, by the tachogen output signal that cylinder is installed, control servomotor through PLC and servo-control unit to rotate, servomotor drives rope winding jib motion by leading screw, realize drum rotating one circle, steel rope moves a wirerope diameter, ensures that steel rope is always vertical with cylinder.When wirerope-winding is to cylinder edge, by going out to touch change-over swith, rope winding jib is commutated.
When due to accumulated error, be directed at steel rope when there is drift angle, correction frame can amplify angle and touch deviation-correcting switch by driving lever, and on-off signal makes servomotor accelerate by PLC and servo-control unit or stops, thus corrects drift angle to upright position.Frame of simultaneously rectifying a deviation can realize the steel rope before operation and cylinder automatic capturing, and before guaranteeing operation, steel rope is vertical with cylinder axis.
Compared with prior art, this Automatic rope arrangement control device for roller is by PLC and servo-control unit to the accurate control of servomotor, and the enforcement of deviation-correcting function, ensure that in whole operation process, without any need for artificial interference, just can realize the accurate winding of steel rope on cylinder.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, specific embodiments of the invention are described in further detail.
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
As shown in Figure 1: Automatic rope arrangement control device for roller of the present invention and cylinder 1 with the use of, comprise rope winding jib support 11, PLC 14 and servo-control unit 13, cylinder is provided with tachogen 2, rope winding jib support 11 is provided with servomotor 12, leading screw 9, guide rail 5, mobile support saddle 8, sheave 7, correction frame 4, deviation-correcting switch 6 and change-over swith 10.Correction frame 4, deviation-correcting switch 6 and sheave 7 are arranged on mobile support saddle 8, and mobile support saddle 8 drives leading screw 9 by servomotor 12, makes mobile support saddle 8 sway on guide rail 5.Correction frame 4 is triangular in shape, and its upper end thereof, on mobile support saddle 8, correction frame 4 is fixed with driving lever, the direction that driving lever is arranged is consistent with steel rope direction, and when deviation appears in steel rope, correction frame deflects centered by hinge-point, drive driving lever turns an angle, and can collide deviation-correcting switch 6.
When cylinder 1 rotates, the tachogen 2 be arranged on cylinder 1 controls servomotor 12 by PLC 14 and servo-control unit 13 and operates, and pass to mobile support saddle 8 sway by leading screw 9, realize cylinder 1 to revolve and turn around, mobile support saddle 8 moves a wirerope diameter with steel rope 3.When mobile support saddle 8 moves to the most left of cylinder 1 or the rightmost side with steel rope 3, be arranged on change-over swith 10 action of rope winding jib support 11 both sides, control servomotor 12 by PLC and servo-control unit and commutate, thus it is mobile that mobile support saddle 8 is commutated.
When after wirerope-winding multilayer, there will be accumulated error, be directed at steel rope 3 by after sheave 7, with the axis out of plumb of cylinder 1, at this moment correction frame 4 is passed through by angle enlargement in the drift angle of steel rope 3, correction frame 4 can touch deviation-correcting switch 6, and on-off signal controls servomotor 12 by PLC and servo-control unit and accelerates or stop, thus corrects drift angle.
When prior operation, to system power supply, if steel rope 3 is by after sheave 7, with the axis out of plumb of cylinder 1, cylinder 1 need not be grasped rotate, at this moment frame 4 of rectifying a deviation touches deviation-correcting switch 6, and on-off signal controls servomotor 12 forward or reverse by PLC and servo-control unit, makes steel rope 3 be in plumbness with the axis of cylinder 1.
By PLC and servo-control unit to the accurate control of servomotor 12, and the enforcement of deviation-correcting function, ensure that in whole operation process, without any need for artificial interference, just can realize the accurate winding of steel rope on cylinder.