Self-pressurization type hydraulic oil tank of loading machine

Abstract

The invention discloses a self-pressurization type hydraulic oil tank of a loading machine. The self-pressurization type hydraulic oil tank comprises an oil tank body, an oil outlet pipe and an oil returning pipe, wherein the oil outlet pipe and the oil returning pipe are communicated with the oil tank body. A pressurization filter assembly and a manual unloading valve are arranged at the top of the oil tank body and communicated with air above oil in the oil tank body. The self-pressurization type hydraulic oil tank has the advantages that the problem that a hydraulic system of an open type oil tank is polluted by the external environment is effectively solved, and the problems that an oil adding cover of an existing pressurization oil tank is difficult to open, and a lifting movable arm has potential safety hazards can further be solved; in addition, operation is easy and convenient, and the manufacturing cost is low.

Description

technical field [0001] The invention relates to a hydraulic oil tank for construction machinery products, in particular to a self-pressurized hydraulic oil tank for loaders that facilitates the daily maintenance of the hydraulic oil tank, and belongs to the technical field of construction machinery. Background technique [0002] The loader is a kind of construction machinery mainly used for material handling. Most of the shoveled materials are loose materials. The shoveling process is often accompanied by relatively large dust, and the working conditions are relatively harsh. In order to improve the cleanliness of the hydraulic system and reduce the influence of the external environment as much as possible, the current domestic loaders mainly use a pressurized fuel tank. Although the pressurized fuel tank can solve the impact of the external environment on the cleanliness of the hydraulic system, due to When the ground is level, there is a lot of pressure inside the fuel tan...

AI Technical Summary

Problems solved by technology

In order to improve the cleanliness of the hydraulic system and reduce the influence of the external environment as much as possible, the current domestic loaders mainly use a pressurized fuel tank. Although the pressurized fuel tank can solve the impact of the external environment on the cleanliness of the hydraulic system, due to When the ground is level, there is a lot of pressure inside the fuel tank. At this time, if the hydraulic oil needs to be replenished, the fuel cap is difficult to open, and the hydraulic oil can not be filled; the boom can only be lifted to the highest discharge position to open the fuel cap; but Refueling is a safety hazard when the boom is raised to the highest dump position

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