Measuring bolts combine the function of a mechanical bolt with that of a force transducer. They are integrated directly into a structure in place of a conventional bolt and measure the shear forces that occur.
Thanks to their compact design, measuring bolts are particularly suitable for applications where forces need to be measured at joints, bearing points or moving connections. VELOMAT offers a range of designs for various installation situations and measurement tasks.
Load-measuring bolts are used in joints, bearings, deflection pulleys and roller bearings, amongst other applications. Typical applications can be found in crane and lifting technology, on work platforms, and in conveyor, vehicle and railway technology.
They are particularly suitable for designs in which an existing bolt is to be used simultaneously for force measurement.
Measuring pins are available in various designs, such as plug pins with a flange or round pins without a flange. Depending on the design, the pin can be inserted directly into the existing bearing or joint assembly.
For additional mechanical securing, measuring pins can, for example, be designed with pre-machined notches or locking plates. These prevent axial displacement of the pin and ensure safe operation.
The full-bridge strain gauge is housed in a protected measuring chamber within the measuring pin. The application chamber is filled with a highly elastic encapsulant, which protects the sensitive measuring points from mechanical and chemical influences.
The bridge balance is calibrated to approximately ±0.01 mV/V in an unloaded state. The measuring bolt can be connected directly to a measuring amplifier.
The calibration check signal can be used to specifically verify the nominal output of the load cell. This allows the functionality of the measurement chain – from the load cell via the measurement amplifier to the downstream measurement equipment – to be checked without applying any additional mechanical load.
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