Supporting leg for mobile constructions
AssigneeFalck Schmidt Shipping ApS
InventorMogens F. Schmidt
Life of this patent
Estimating the term…
Abstract
Supporting leg for mobile construction equipment such as mobile cranes, having a supporting foot (1) which can be elevated and lowered in relation to the foundation by means of a moving mechanism (3) inserted between the equipment (2) and the supporting leg. Wherein the moving mechanism (3) has a clearance (4) between the foot elevated position and the foot lowered position, and a spring (8) urges the mechanism (3) against the elevated position, whereby an alarm switch (9) is activated to give an automatic indication in case the stability of the construction is reduced. The allowable reduction of load on the supporting leg before the activation, can be adjusted by the spring force applied.
Claims2
A stabilizing device for mobile construction equipment having a main body comprising at least one elongated leg pivotally attached at one end to the body of the equipment, a foot pivotally attached to the other end of said leg adapted to engage the foundation on which the equipment is setting, a planar bracket projecting from said leg, an elongated slot in said bracket, a piston and cylinder power unit pivotally connected at one end to the body and slidably connected at the other end in said slot, a stopper member mounted on said bracket between said slot and said foot, a contact arm mounted on said bracket between the end of said piston-cylinder connected in said slot and said foot, spring means operably mounted between said stopper and said contact arm to resiliently urge said contact arm into engagement with the end of said piston-cylinder connected in said slot, and alarm switch means operably mounted on said bracket between said contact arm and said foot so that said contact arm engages said switch when a predetermined force is exerted by said foot on said foundation to maintain a stable operating condition for the equipment and said contact arm disengages said switch when said force is reduced a predetermined amount to create an unstable operating condition, said disengagement activating an alarm.
Dependencies are inferred from the claim text.