A road milling machine

Abstract

The invention relates to a milling machine for a pavement. The milling machine comprises a rack and a lifting base, a lifting driving mechanism is arranged between the rack and the lifting base, and arotation shaft is rotatably installed on the lifting base; a first swing shell and a second swing shell are further rotatably coaxially installed on the lifting base, a middle milling roller is fixedly installed on the rotation shaft, and a first milling roller is rotatably installed at the swing end of the first swing shell; a second milling roller is rotatably installed at the swing end of thesecond swing shell, the rotation shaft is in belt transmission connection with a rotary shaft of the first milling roller and a rotary shaft of the second milling roller, swing driving hydraulic cylinders are hinged between the first swing shell and the lifting base as well as between the second swing shell and the lifting base respectively, and a rotation driving mechanism for driving the rotation shaft to rotate is further installed on the lifting base. The first milling roller, the middle milling roller and the second milling roller can be located at different height positions while millingoperation is conducted, and the milling efficiency can be effectively improved.

Description

technical field [0001] The invention relates to a road milling machine. Background technique [0002] Road milling machine is one of the main types of asphalt pavement maintenance construction machinery and one of the main equipment for asphalt concrete pavement maintenance construction. It can be used to remove defects such as pavement wrapping, oil waves, reticulation, ruts, etc. It can also be used to excavate road pits and grooves, as well as roughening of cement pavement and milling of surface layer dislocation. [0003] The existing milling machine includes a frame and a milling device, and the milling device includes a milling drum, etc., and the milling speed is changed by changing the speed of the milling device. Most of the existing technologies realize the speed of the milling drum by changing the engine speed However, the change range of the milling drum speed realized by the change of the engine speed is limited, and it cannot be effectively adjusted according ...

AI Technical Summary

Problems solved by technology

[0003] The existing milling machine includes a frame and a milling device, and the milling device includes a milling drum, etc., and the milling speed is changed by changing the speed of the milling device. Most of the existing technologies realize the speed of the milling drum by changing the engine speed However, the change range of the milling drum speed achieved by the change of the engine speed is limited, and it cannot be adjusted effectively according to actual needs.

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