Damped sensor for detecting oil quantity of oil tank

Abstract

The invention discloses a damped sensor for detecting the oil quantity of an oil tank. The damped sensor is provided with a measuring tube (1), wherein a fixed end (2) and a wiring terminal (3) are arranged at the upper end of the measuring tube (1); a magnetic floating fall (4) is sleeved outside the measuring tube (1); the lower part of the magnetic floating ball (4) is connected with a damping fin (6) through a spring (5); and the spring (5) and the damping fin (6) are respectively sleeved outside the measuring tube. According to the damped sensor disclosed by the invention, the transient impact force of the liquid level for the magnetic floating ball during shake in a wide range can be effectively relived; the locking or damaging of the magnetic floating ball is avoided; the service life of the sensor is prolonged (can reach about one year); the loss and the cost are reduced; the detection precision of the oil quantity is increased; and the reliable detection of the oil quantity of locomotives such as forklift trucks and the like in a work state is realized.

Description

technical field [0001] The invention relates to a fuel tank oil quantity detection sensor, in particular to a damping fuel tank oil quantity detection sensor which can prolong the service life and improve the oil quantity detection precision. Background technique [0002] At present, known motor vehicle oil tank oil quantity detection devices have various structural forms, and the float type liquid level gauge is one of them. The detection sensor of the existing float type liquid level gauge has a measuring tube, and a plurality of dry reed switches are installed in different positions from top to bottom in the measuring tube, and there is a fixed end on the upper end of the measuring tube for installation and sealing on the oil tank As well as the transmitter and terminal connected to the dry reed switch, a magnetic floating ball is connected to the outer casing of the measuring tube. When the magnetic floating ball floats up and down with the change of liquid level, the m...

AI Technical Summary

Problems solved by technology

However, if it is installed on a fuel tank with a harsh working environment (frequently moving forward, backward, lifting and lowering) such as an industrial forklift, the magnetic float will also shake up and down greatly with the liquid level in the fuel tank

The instantaneous impact force generated when shaking beyond the range often causes the magnetic float to be stuck or damaged, which not only leads to a short service life of the sensor (only about one month), but also increases the cost, and seriously affects the accuracy of detection, which cannot truly reflect the actual oil in the tank. quantity

Images