Original, simple and reliable CLUTCH invented AFTER THE AUTHOR get acquainted with their natural counterparts.
Leonardo da Vinci, D. Watt, T. Edison, V. Shukhov, Artobolevsky, B. Yuryev — a list of names! What unites them? All of them, these geniuses engineering, invented the clutch.
Tens of thousands of types of couplings connect machine parts, building construction, pipeline tender, or hard, smooth and instantly, with a constant or variable force, tight or a disruption to the rotation in one direction or in two, with a lag, or overtaking. A tray of inventions has not dried up.
Can we remain indifferent to the couplings? Even Napoleon wrote that every soldier should know what is in his knapsack a marshal’s baton. Why would I not following the example of the great invent a couple of other joints? Especially at first it seemed to me as if it is simple enough. For example, I stuck a pencil in spiral chips and got a new clutch. Try it yourself. Enter the pencil inside the chip, touch the surface of the slate it turns — and can tighten the chips by turning a pencil. The clutch is not? For some industries it will improve. Between the two coupling halves cones arrange a coil spring (one with internal ring gear, and the other — from the outside). Moving forward, one of the coupling halves be pushed it inside the other, and the spring, twisting, begin to rotate the driven coupling half, gradually increasing the transmitted torque.
This clutch is durable, reliable and perfectly conveys torque. It is much better known synchronizers. The simplest of these, used in car gearboxes, has eight parts, four of which are very complex. The new clutch just two original parts, and make them very easy. New synchronizing clutch not only greatly reduce the cost of gear boxes, but also improve their reliability.
Satisfying the inventive self-esteem, I four years of couplings and remembered. But one summer son dragged me to some unsightly bushes, hung with yellow flowers and green with purple pods with small, but rather pot-bellied.
— Do you want to show the focus?
— Come on.
He went to the bush, picked pod darker and squeezed his fingers. And suddenly pod exploded out of him scattered peas and torn edges immediately curled in spiral. Raging peas! I shoot all mature pods on the bush and went to another. Is this surprising phenomenon not found use in industry? At first thought of children’s toys, and then became «mature» design safety clutch.
The first option both in form and in content — almost one to one wild pea pod. Elastic collets petals encircle the «pea-sized» ball of the rod and its curved ends cling to shoulder leading the coupling half. If the axial force greater than a predetermined spring, petals pop out of the collar and the box will open.
But I forgot that the inventor must learn from nature, and do not try to blindly copy her works. It turned out that the tension spring into the hole of the shaft is difficult to install, replace it with a double conical compression spring (it is often used in garden pruners), I got rid of the ball, and with the rod. The number of parts was reduced, the structure simplified.
Couplings discovered unexpected properties: it can compensate for the significant installation error and misalignment of the shafts and, more importantly, break not only all the petals, but also part of them. Change the number included petals convenient to adjust the value of the limit transmission torque.
In addition, the coupling dampens vibrations, twists in case of overload. This allows you to use it in vibration machines on test benches.
Is it possible to clutch make it even easier? I give up a minute from the springs at all. After the collet onto the elastic and can create their own connection to the elastic tension. Splined onto the pin, curving and sloping walls retain their shoulder. When you overload the petals themselves come out of engagement with the shoulder.