DOCK LEVELER FOR LOADING DOCK WITH INTEGRAL ON-DEMAND COMPRESSOR AND PNEUMATIC ACTUATOR

摘要

A loading dock leveler having: a base having an inward end; a deck with a top platform, the deck having an inward end hingedly mounted to the inward end of the base for movement between an upper position and a lower position; an on-demand air compressor with an electrically powered motor, the compressor having inlet in communication with a source of ambient air and a compressed air outlet; a pneumatic deck lift actuator pivotally connected to the base and to the deck for rotary movement between a raised position and a lowered position, the lift actuator having a lift chamber, and an inlet port in direct communication with the compressor outlet through an electric powered lift valve to the lift chamber, and having a vent valve in communication with the lift chamber; and an electric user control interface having: an electric up/down switch in communication with the motor to conduct electric power to the motor and open the lift valve in an up position, and to prevent conduction of electric power to the motor and open the vent valve in a down position; wherein the compressor, motor, lift valve; vent valve and lift actuator are disposed between the base and the deck.