ACCELERATION/DECELERATION DETECTING DEVICE FOR HYDRAULIC ELEVATOR

摘要

PURPOSE:To adjust the acceleration/deceleration of an elevator box easily and effectively by providing a speed detecting means to compare an actual value detected by a pressure detecting means with a reference value and detect the acceleration/deceleration of the elevator box. CONSTITUTION:At first, the pressure of pressure oil which is supplied from a hydraulic drive unit 3 is detected by a pressure detecting means 7 to find an actual value of acceleration/deceleration of an elevator box. Next, the actual value is input to a speed detecting means 12 and compared with a preset reference value of pressure of pressure oil to compute an adjusting amount necessary for good acceleration/deceleration. In accordance with the necessary adjustment which is computed, an operator performs the control of the hydraulic drive unit 3 in a machine room to set good and suitable acceleration/deceleration of the elevator box.