Measurement system for determining support force

A support force measurement apparatus for measuring a support force on a support element of a support structure of a movable working machine, the apparatus comprising:

• at least one measurement element, which is connected to a deformation body deformable with an effect of the support force, so as to form a sensor and send a signal proportional to the support force;
• and
• a support leg, which comprises the sensor and is movably connected to the support element, the support element comprising a cable connection, the cable connection guiding electrical energy and being used for sending the signal proportional to the support force to an analysis apparatus in the machine,
• wherein the support element in the support leg and the sensor are provided with electromagnetic interfaces,
• wherein the measurement element is supplied via electromagnetic induction with electrical energy from the machine through the electromagnetic interfaces, and
• wherein the signal proportional to the support force is transmitted via electromagnetic induction from the measurement element to the cable connection of the support element,
• wherein the support leg comprises a spherical plate supported on the sensor,
• wherein the support element comprises a link ball which is accommodated in the spherical plate,
• wherein the portion of the electromagnetic interface at the support leg side is mounted in a depressed manner in a recessed portion of the spherical plate, and
• wherein the portion of the electromagnetic interface at the support element side is mounted in a depressed manner in a recessed portion of the link ball, so that the two portions are arranged opposite to each other in a non-contact manner.