Elevator sill adjusting support

The utility model discloses an elevator sill adjusting support which comprises an elevator sill body, an adjusting mechanism and a clamping mechanism. Grooves are formed in the two ends of the elevator sill body. The adjusting mechanism is inserted into the groove and comprises an adjusting support, a plurality of contraction grooves are formed in the adjusting support, the adjusting support is in threaded connection with an adjusting screw rod, and the end, close to the adjusting support, of the adjusting screw rod is connected with a squeezing and pushing block; the clamping mechanism is arranged in the contraction groove and comprises a left clamping plate and a right clamping plate, the left clamping plate and the right clamping plate are symmetrically arranged relative to the adjusting screw rod, and semicircular grooves are formed in the ends, close to each other, of the left clamping plate and the right clamping plate. According to the elevator sill support, by arranging corresponding mechanisms of the