JPS6453999A - Table lift - Google Patents

Abstract

PURPOSE: To further reduce the minimum height of a table by storing an auxiliary support arm of which one end is attached on a base rotatably and in which a second contact means movable for a lower face of the table is attached to the other end thereof in a space formed by the table and the base. CONSTITUTION: When it is started to fill pressure into a hydraulic cylinder 3 to lift a table 1, a rod 13 is gradually elongated, and a roller 10 having a pin 9 on a shaft thereof rolls on a lower face of the table 1 to push up the table 1. Then, a roller 12 (a second contact means) comes into contact with the lower face of the table 1 and starts to roll to push up the table 1 instead of the roller 10. During this time, a non-operation end clevis 4 of the hydraulic cylinder 3 rises together with the table 1. When a roller 5 of the rod 13 is elongated up to a clevis 11 at stroke end, an auxiliary arm 8 and a connection bar 7 finish an initial pushing up process of the table 1 and are supported hereafter by arms 14, 15 to lift the table 1 by the hydraulic cylinder 3 and the rod 13.