Multi-suspension road surface automatic leveling hydraulic system with anti-explosion function

The utility model is named a multi-suspension road surface automatic leveling hydraulic system with an anti-explosion function, and belongs to the technical field of railway movable bridge girder erection machines. The problem that when an existing movable bridge girder erection machine is in a severe working environment, frames and other main machine structures deform is mainly solved. The multi-suspension road surface automatic leveling hydraulic system is mainly characterized in that four proportional electromagnetic reversing valves, four balance valves, eight hydraulic ball valves and two dual-pipeline anti-explosion valve sets are adopted and connected through high-pressure hoses, a dual-acting suspension oil cylinder is segmented into three-point supporting and balancing systems through the hydraulic ball valves, and the two anti-explosion valve sets and the suspension oil cylinders are connected through pipelines to form a dual-pipeline anti-explosion system. By means of the multi-suspension road surface automatic leveling hydraulic system, the balance of a frame can be automatically adjusted according to road conditions of road surfaces; if the pipelines are damaged and broken, dual-pipeline anti-explosion valves have the capacity for locking oil of an oil cavity of the dual-acting suspension oil cylinder, and it is avoided that when the hydraulic pipelines are damaged and broken, the frame inclines or a vehicle body turns to one side. The multi-suspension road surface automatic leveling hydraulic system is mainly used for a suspension road surface automatic leveling device of a 900 T girder transporting vehicle or other large box girder transporting devices.