Patent ID: 8376319
Filing Date: 2013-02-19
Classification: B66F

Abstract:
1. A hydraulic jack capable of displaying load and overload warning, comprising a base ( 1 ), a lifting arm ( 2 ), a pump body ( 3 ), a handle ( 4 ), and a tray ( 5 ), wherein, a signal collection assembly ( 6 ) designed to sense the load on the tray ( 5 ) is arranged at the end of the lifting arm ( 2 ), and the signal collection assembly ( 6 ) is electrically connected to a weighing controller ( 7 ) arranged on either the base ( 1 ) or the pump body ( 3 ), and the tray ( 5 ) is arranged on the signal collection assembly ( 6 ), wherein the signal collection assembly ( 6 ) comprises a bracket ( 61 ), a strain foil base ( 63 ) and a strain foil ( 64 ), the bracket ( 61 ) is hinged to the end of the lifting arm ( 2 ); a bracket shaft sleeve hole ( 611 ) is arranged at the center of the bracket ( 61 ); the strain foil base ( 63 ) is fixed to the bracket ( 61 ), and a through-hole ( 631 ) is arranged at the center of the strain foil base ( 63 ); a first strain foil slot ( 632 ) is arranged around the through-hole ( 631 ) at the side where the strain foil base ( 63 ) faces the tray ( 5 ); the strain foil ( 64 ) is embedded in the first strain foil slot ( 632 ) and electrically connected to the weighing controller ( 7 ); the tray ( 5 ) is arranged on the strain foil base ( 63 ) the strain foil ( 64 ) contacts the tray ( 5 ).