A steering oil tank with pressure regulating function

Abstract

The invention discloses a steering oil tank with a pressure adjustment function, comprising a fuel filler cap, a tank body, a filter element assembly, a valve seat, a pressure valve and a vacuum valve. Threaded connection, there is a pressure valve on the fuel cap, and the pressure valve spring is used to ensure that the pressure valve is closed for a long time during the working process of the steering system, and the oil tank is in a closed state and has a certain pressure during normal operation; The pressure valve overcomes the pre-pressure of the pressure valve spring and releases the pressure to ensure the safe operation of the steering system; the refueling cap is provided with a vacuum valve, and the vacuum valve spring ensures that the vacuum valve is closed for a long time during the working process of the steering system. When the internal pressure is low, the vacuum valve is opened to balance the pressure in the tank to ensure the normal flow of oil in the steering system and avoid steering emptying. The invention solves the problems of oil leakage and oil vapor overflow from the vent hole, increases the pump oil volume of the steering, and avoids the oxidation corrosion of the mechanical parts.

Description

technical field [0001] The invention relates to a steering oil tank with a pressure regulating function, belonging to the technical field of automobile steering systems. Background technique [0002] In the current truck hydraulic steering system, the steering booster pump basically uses a vane pump, and the pump has a poor self-priming capacity. During the layout of the vehicle steering system, the steering oil tank is arranged at a higher position than the pump position (position difference > 200mm). ) Relying on the weight of the oil to ensure the supply of oil to the steering pump. For this reason, increasing the appropriate pressure in the steering oil tank can better ensure the supply of the steering oil pump, avoid the air suction caused by the uphill and downhill and oil sloshing during the operation of the vehicle, and improve the safety and stability of the steering system in the working process. Extend the life of the entire steering system. [0003] In the c...

AI Technical Summary

Problems solved by technology

However, oil spillage, oil leakage and oil vapor overflow in the vent hole of the power steering oil tank are common. complain

At present, oil tank manufacturers have been improving and optimizing the ventilation of the oil tank, such as the current oil-gas separation tank cover and the lower exhaust junction. Although the failure of the oil tank vent hole has been improved, it has not yet been effectively resolved.

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