Walking hydraulic system of concrete pavement sympathetic vibration rock crushing plant

Abstract

The invention relates to a walking hydraulic system of a concrete pavement sympathetic vibration rock crushing plant. The walking hydraulic system comprises a volumetric speed control system. Oil output by a hydraulic pump directly enters an execution element, overflow losses and throttling losses are avoided, working pressure changes along with load changing, and therefore efficiency is high, and heating is low. The volumetric speed control system comprises a variable pump and a constant displacement motor connected with the variable pump through a pipeline. The constant displacement motor is used for driving the concrete pavement sympathetic vibration rock crushing plant to walk. A shuttle valve communicating with an oil tank is connected between two end openings of the constant displacement motor in parallel. The volumetric speed control system is a semi-closed system. The two-way variable pump is connected with an electric-hydraulic proportion control valve. The electric-hydraulic proportion control valve controls the flow and reversing of the two-way variable pump. The walking hydraulic system is reasonable in design, compact in structure and convenient to use.

Description

technical field [0001] The invention belongs to the field of road maintenance engineering machinery, and relates to a traveling hydraulic system of a cement pavement resonance gravel equipment. Background technique [0002] Cement pavement resonant gravel equipment is a kind of road construction machinery equipment that can easily crush the cement concrete panel by adjusting the vibration frequency of the machine hammer to make it close to the natural frequency of the cement panel, and then stimulate it to resonate. In the prior art, there are generally two types of driving controls for the hydraulic system of this type of mechanical equipment: the first is to drive the front traveling device by hydraulic drive of the front axle, and the wheel load of the front axle accounts for 30% of the specific gravity will easily cause insufficient traction of mechanical equipment; the second is to use a single pump to drive double motors to drive the rear traveling device, which is pro...

AI Technical Summary

Problems solved by technology

In the prior art, there are generally two types of driving controls for the hydraulic system of this type of mechanical equipment: the first is to drive the front traveling device by hydraulic drive of the front axle, and the wheel load of the front axle accounts for 30% of the specific gravity, it is easy to cause insufficient traction of mechanical equipment; the second is to use a single pump to drive double motors to drive the rear traveling device, which is prone to different motor speeds and cannot achieve the synchronization effect of the driving wheels

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