Powertech Grid / Spring Couplings provides you with a combination of the high power rating of gear couplings and the flexibility advantages of elastomer couplings.They are easy to install and easy to maintain.The flexible grid can be quickly replaced without disturbing connected devices.
Powertech grid/spring couplings are available in a variety of sizes, with a power from 0.45 kW to 1307 kW per 100 rpm, and a bore diameter of up to 267mm.Construction:
The high-torque grid/spring coupling basically consists of a grid spring that connects two hubs-one on the drive shaft and the other on the driven shaft-through axial cut grooves on the periphery of the two hubs.The spring adopts a special design compatible with the required characteristics of the system, forming a series of grids/spring bridges along the groove.The groove expands outward to allow the grid member to have a longer flexible span under normal load, and to provide better support by the side of the groove under overload conditions.
The stiffness of the spring and the stiffness of the coupling depend on the length of each flexible span not in contact with the groove.Subsequently, the contact length changes with each change in torque, resulting in a change in the stiffness of the coupling at each moment in the vibration cycle.Therefore, this produces a strong detuning effect, leading to constant changes in the torsional vibration frequency and preventing the accumulation of resonance in the system.
The design principle adopted by the grid/spring coupling allows it to accommodate considerable axial, parallel and angular misalignment between the driving machine and the driven machine.At the same time, due to the high torque, it can absorb considerable overload, thereby reducing the wear of equipment and machinery.By using grid/spring couplings, failures and downtime of any manufacturing unit will be minimized.