Demountable tanker truck and hydraulic system thereof

Abstract

The invention provides a demountable tanker truck and a hydraulic system thereof. The hydraulic system comprises a hydraulic pump, wherein the hydraulic pump supplies oil to a main oil cylinder and a moving oil cylinder through a multi-way valve, the multi-way valve at least comprises a main oil cylinder reversing valve and a moving oil cylinder reversing valve, and the hydraulic system also comprises a first position detection device and/or a second position detection device. The moving state of the main oil cylinder can be controlled according to the first position detection device, and the moving state of the moving oil cylinder can be controlled according to the second position detection device. The synchronism of the operation process of the main oil cylinder can also be ensured, and in addition, the protection on a main oil path can also be realized. The demountable tanker truck and the hydraulic system thereof have the advantages that misoperation can be reduced, the synchronism is high, the anti-impact performance is good, and the like.

Description

technical field [0001] The invention relates to the fields of vehicles and construction machinery, in particular to a hydraulic system of a tank truck and a tank truck including the hydraulic system. Background technique [0002] At present, the hydraulic system of the tank truck widely uses an open circuit, which is usually composed of a hydraulic pump, a multi-way valve, a hydraulic oil tank, a hydraulic cylinder, and a hydraulic pipeline. The system control method is intuitive and easy to operate. [0003] The multi-way valves in the above-mentioned hydraulic system are mostly operated manually, and the actions when carrying and unloading the tank are completely observed and controlled by humans. Such a system also has certain defects, such as: the sub-frame cannot be accurately judged when carrying the tank Whether it has been accurately placed in the tank; when the tank is moved, it is impossible to accurately determine whether it has moved in place; when the tank is un...

AI Technical Summary

Problems solved by technology

[0003] The multi-way valves in the above-mentioned hydraulic system are mostly operated manually, and the actions when carrying and unloading the tank are completely observed and controlled by humans. Such a system also has certain defects, such as: the sub-frame cannot be accurately judged when carrying the tank Whether it has been accurately placed in the tank; when the tank is moved, it is impossible to accurately determine whether it has moved in place; when the tank is unloaded, it is impossible to accurately determine whether the lower end of the tank is in a horizontal state that is convenient for placement, etc.

Different operators have different understandings of the execution of each action, which may lead to the direct consequence that the previous action of the actuator of the hydraulic system is not in place, and the next action will occur directly, causing damage to the mechanical parts, and even accidents in severe cases

[0004] In addition, the load changes greatly when the tank body is lowered, and there is no suitable protection device in the main oil circuit of the existing hydraulic system. When the main oil cylinder runs to the bottom, the system is prone to a large impact, causing damage to the mechanical parts

At the same time, the existing hydraulic system is difficult to keep synchronized during the operation of the two main cylinders, which may easily cause rollover accidents or distortion of the main frame, affecting the performance of the whole vehicle

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