Fuel oil and electric dual-purpose special type engineering machinery

Abstract

The invention relates to a special-purpose fuel and electric engineering machine, which comprises a self-travelling carriage, on which a central rotary table, a power system, a traveling system, a hydraulic pump station, and a work system are provided. The power system drives the hydraulic pump station and the traveling system, the hydraulic pump station supplies pressure oil to the hydraulic system, which drives the work system. On the carriage, additionally a control circuit, a cable drum and a drum oil motor are provided. Wherein, the power system comprises a fuel engine and an AC motor; the hydraulic pump station comprises a hydraulic pump station driven by the fuel engine and an electro-hydraulic pump station driven by the AC motor; the electro-hydraulic pump station and the hydraulic pump station driven by the fuel engine are connected with the hydraulic system through a 2-position 3-way valve; the electro-hydraulic pump station supplies pressure oil to the oil motor of the drum; the cable drum is for accommodating the cable connected with the AC motor; the oil motor of the drum drives the cable drum to take up and retract the cable; the control circuit controls the special-purpose engineering machine to work under driving of the AC motor. The invention can effectively save fuel, reduce the environmental pollution from the tail gas of fuel, and can also greatly reduce the operation cost.

Description

Technical field [0001] The invention relates to a special engineering machine, in particular to a special engineering machine with dual-purpose fuel and electric driving which can be used alternately with two driving modes: fuel oil and electric. Background technique [0002] Special engineering machinery is a vehicle-mounted engineering work vehicle, including pile drivers, rotary excavators, rock drills, drilling machines, road pavers, canal slope protection pavers, channel pavers, heavy crawler cranes, etc., which can be like ordinary vehicles It is the same as driving long distances on the road, and at the same time, it is a tool for engineering operations, that is, moving back and forth on a certain size of the working surface, such as pile driving, rotary excavation, rock drilling, drilling, excavation, embankment, and opening. Construction of trenches, paving roads, paving canal slope protection, paving channels, and heavy lifting. The special engineering machinery in the...

AI Technical Summary

Problems solved by technology

[0003] How to enable special construction machinery to be driven by a fuel engine during long-distance driving, and to be driven by a fuel generator or electric power during operation, and at the same time avoid environmental pollution caused by waste batteries. In the prior art There is no disclosed technical solution that satisfies the above usage requirements

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