Engineering mechanical hydraulic oil tank, control method thereof and engineering machine

Abstract

The invention discloses an engineering mechanical hydraulic oil tank and belongs to the technical field of waste gas heating devices. The engineering mechanical hydraulic oil tank comprises an oil tank body, wherein a cavity filled with liquid-state or gas-state heating media is wrapped outside the oil tank body. A gas pipeline mainly made of good conductors of heat penetrates through the cavity, a gas inlet of the gas pipeline is connected to a first branch pipe of an exhaust pipe close to an engine, and a gas outlet of the gas pipeline is connected to a second branch pipe of the exhaust pipe close to a discharging port. A first valve switch for controlling whether gas in the exhaust pipe flows into the first branch pipe is arranged at the position of the first branch pipe, and a second valve switch for controlling whether the second branch pipe is communicated is arranged at the position of the second branch pipe. By means of the technical scheme, the engineering mechanical hydraulic oil tank has the advantages of being fast in heating, environment-friendly, energy-saving, and capable of controlling the temperature of hydraulic oil to be within an ideal range and avoiding damage to hydraulic oil characteristics caused by the fact that the temperature of the hydraulic oil is larger than a critical temperature of oxidation and thermal stability of the hydraulic oil.

Description

technical field [0001] The invention relates to an exhaust gas heating device, in particular to a construction machinery hydraulic oil tank, a control method and construction machinery. Background technique [0002] When the construction machinery is used in a cold environment, the viscosity of the hydraulic oil increases, or even solidifies, which will cause difficulty in oil suction for the oil pump, and the hydraulic actuator will be difficult or unable to work. The hydraulic oil needs to be preheated before it can work, and it cannot be used for a long time after work. The temperature of hydraulic oil rises to the ideal state, which affects work efficiency and accelerates the aging of equipment. Contents of the invention [0003] In view of the above-mentioned problems existing in existing construction machinery, a construction machinery hydraulic oil tank, a control method and construction machinery are now provided. [0004] The specific technical scheme is as follo...

AI Technical Summary

Problems solved by technology

[0002] When the construction machinery is used in a cold environment, the viscosity of the hydraulic oil increases, or even solidifies, which will cause difficulty in oil suction for the oil pump, and the hydraulic actuator will be difficult or unable to work. The hydraulic oil needs to be preheated before it can work, and it cannot be used for a long time after work. The temperature of hydraulic oil rises to the ideal state, which affects work efficiency and accelerates the aging of equipment

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