O dispositivo de bloqueio, o que é e como funciona

The locking device, what it is and how it works

contraction discs of all types online sale

Today we talk about the locking device, a transmission component that represents an excellent locking and connection system and is based on the principle of friction: through the thrust cones, pressure develops between the axle and the hub that allows secure fixation of pulleys, gears, chain wheels, drums, flywheels, etc.

All this is possible thanks to the fact that this particular mechanical organ has a cylindrical shape whose purpose is to make two or more elements integral, through static friction, giving them the ability to transmit a torsional moment and absorb an axial thrust.

dispositivo de codificação

WHAT IS IT COMPOSED OF?

The contraction disc is composed of two longitudinally cut rings, inserted one inside the other, and with conical surfaces in contact with each other. A series of screws, for tightening, placed along the circumference.

HOW DOES THE PRESSURE PRESS WORK?

By sequentially tightening the screws, located along the circumference of the locking device, the conical part of the cut rings is forced together, causing a radial deformation, developing a pressure on the elements to be connected that allows them to be fixed in the angular position and axial position desired, with complete safety.

operação do disco de contração

WHERE IS PRESSURE PRESSURE USED?

In all mechanical constructions where it is necessary to join and fix two parts, this is done by introducing the protrusion of one of them into the corresponding cavity of the other. Some of the most common uses are the attachment of flywheels, belt and cable pulleys, chain wheels, gears, levers, disc cams, eccentrics, brake discs, reducer flanges, gaskets, conveyor belt drums, elevator controls, etc. construction of cranes, conveyors, compressors, diesel engines, machines for the production and processing of glass and ceramics, packaging machines, presses, mills, crushers, etc.

WHEN IS IT USED?

In all cases where traditional systems such as welding, straight keys, keys, tangential keys, tapered pins, tapered shafts, slotted profiles, hot locking are currently used.

HOW MANY TYPES OF PRESSURE ARE THERE?

On sale in our store you will find different types of shrink discs that allow you to cover a wide range of applications. There are self-centering and non-self-centering shrink discs, and in different dimensions (diameter, maximum torque and drilling).

WHAT ARE THE BENEFITS?

Simplification of assembly operations and elimination of expensive operations, the most common being the creation of grooves to accommodate the key and the respective final adjustment, which require the use of appropriate equipment and specialized personnel.

Reduced mechanical machining, possibility of using commercial drawn bars, compensation of machining gaps, load distribution over the entire contact surface and not just on the sides of the key, without tendency to notch breakage, increase in the resistant section of the shafts, high resistance to torsion, possibility of increasing axial thrusts and transmissible torques by increasing the number of clamping devices used, protection against overloads, ease of angular and axial positioning of parts, absence of angular and axial clearances, noise reduction, no wear, protection against oxidation, absolute interchangeability, assembly, disassembly and simplified maintenance.

USEFUL LINKS:

  • Technical data sheets and characteristics of the various contraction discs on the market

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