Articulated Twisting Flyer With Counterweights for High-Speed Stranding
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Solution Overview
Problem
Conventional single-twist cable stranding machines with tailstocks face limitations in rotation speed due to significant friction forces, deformation, and vibrations caused by centrifugal forces, leading to reduced productivity and increased wear on mechanical components.
Innovation Solution
A twisting flyer with an articulated structure and counterweights is designed to rotate about a central axis, featuring two carriages with guide pulleys and balancing weights to compensate for centrifugal forces, reducing friction and deformation, and allowing higher rotation speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the rotation speed of the flyer is increased to improve productivity, then the friction forces and deformation caused by centrifugal forces increase, leading to higher wear on mechanical components
Solution Approach 1:
The patent introduces counterweights (22a, 22b) positioned on the rods (20, 21) that rotate with the flyer. These counterweights generate centrifugal forces that balance and compensate for the centrifugal forces acting on the carriages (15, 18) and guide pulley system. By offsetting these forces, the friction on the sliding bushings is significantly reduced, allowing higher rotation speeds without excessive wear, thus resolving the contradiction between productivity and component reliability.
2Productivity
If the rotation speed is increased to achieve higher productivity, then the centrifugal forces cause greater deformation of the ring and crossmembers, inducing vibrations
Solution Approach 1:
The counterweights (22a, 22b) mounted on the rotating rods generate balancing centrifugal forces that counteract the deforming forces on the crossmembers and ring structure. This force compensation reduces the differential deformation and unbalancing effects, thereby minimizing vibrations and maintaining structural stability at high rotation speeds, enabling higher productivity without compromising stability.
3Area of stationary object
If a rigid structure with large dimensions is used to support the collection spool, then the machine can handle larger spools, but the structure and components have considerable inertia which limits rotation speed
Solution Approach 1:
The patent employs counterweights (22a, 22b) that rotate with the flyer structure to balance the centrifugal forces generated by the large-diameter collection spool and its support structure. This force compensation reduces the effective inertial load on the drive system, enabling the machine to rotate larger spools at higher speeds than would otherwise be possible, thus resolving the contradiction between handling capacity and rotation speed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables higher rotation speeds, reduced wear on mechanical components, and increased productivity while maintaining cable alignment, allowing for speeds of up to 1000 rpm with reduced deformation and friction.
Implementation Method 1
balancing weights (22a, 22b) at hinge regions between the first pair of rods (20) and the second pair of rods (21), which are adapted to compensate, during the rotation of the twisting flyer (10), a centrifugal force at the first carriage (15) and at the second carriage (18)
Data Source
AI summary
A twisting flyer for a single-twist cable stranding machine, which is adapted to rotate about a rotation axis and includes two shoulders connected by crossmembers, and an articulated structure which has in turnsa first carriage provided with elements for translation on first of the crossmembers and which supports a guide pulley for a cable, anda second carriage provided with elements for translation on second of the crossmembers, which supports a counterweight for the guide pulleyThe twisting flyer further includes a first pair of rods which are hinged with one end thereof to the first carriage and with another end toa second pair of rods which are hinged with one end thereof to the second carriage and with another end to the first pair of rods,balancing weights at hinge regions between the first pair of rods and the second pair of rods.