Vehicle-mounted concrete pump truck

Abstract

The invention discloses a vehicle-mounted concrete pump truck. The vehicle-mounted concrete pump truck comprises a pumping operation power system and a pumping system, wherein the pumping operation power system comprises an upwardly installed engine and a chassis engine, and the pumping system comprises an upper oil pump unit and a lower oil pump unit. The upwardly installed engine provides pumping operation power for the upper oil pump unit, the chassis engine provides pumping operation power for the lower oil pump unit and provides driving power for an axle. The rated working rotation speed of the upwardly installed engine and the rated working rotation speed of the chassis engine are close to the lowest position of an oil consumption curve. The vehicle-mounted concrete pump truck has the advantages of high pressure, large delivery capacity, compact structure, flexible transition, oil saving, consumption reduction and small operation noise.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a fuel-saving and low-noise vehicle-mounted concrete pump truck with high pressure and large displacement. Background technique [0002] The existing vehicle-mounted pumps can be divided into three categories according to the power composition of the pumping operation. The first category is that the pumping operation power is the bodywork power system. The bodywork power system includes the oil pump set connected to the bodywork engine and the hydraulic oil tank. At present, mainstream products adopt this method, and there are two ways of engine horizontal arrangement and engine longitudinal arrangement. Considering the convenience of maintenance, the mainstream products adopt the horizontal layout of the engine. The problem is that the maximum power of the engine is about 200 kW and the maximum pumping outlet pressure is 18 MPa due to the limitation of the vehicl...

AI Technical Summary

Problems solved by technology

Considering the convenience of maintenance, the mainstream products adopt the horizontal layout of the engine. The problem is that the maximum power of the engine arranged due to the vehicle width is about 200 kW, and the maximum pumping outlet pressure is 18 MPa.

The existing problem is to consider the cost and the flexibility of transition. The mainstream vehicle-mounted pump adopts the chassis of the second bridge of the medium truck. Due to the restriction of the chassis, the maximum power of the engine is about 170 kW, and the maximum pumping outlet pressure is about 12 MPa.

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