The new generation of ultra large span and width overlord 24 meter and 26 meter bridge inspection vehicles released by Yutong during this redesign is essentially an insight into market demand. Bridges with large span widths that cannot be inspected and maintained by bridge inspection vehicles in the past are included in the scope of inspection; The increase of super large bridges with multiple lanes in both directions has put forward higher requirements for the working range and crossing width of vehicles. Therefore, large-span bridge inspection vehicles have become the mainstream demand in the market.
Firstly, it is more robust. Overlord 24 meter car, with a span width of 5.2 meters and a span height of 6.4 meters; The Overlord 26 meter car has a span width of 4.9 meters and a span height of 6.4 meters; Two level extension and contraction of the extended support legs facilitate the use of emergency lane closure conditions; The walking speed is 15 meters per minute, the vertical truss lifting speed is 2.7 minutes, and the average exhibition and collection time is 5 minutes.
Secondly, it is safer. Equipped with an anemometer as standard, the driver can monitor the wind speed at all times; Two level alarm system, with wind power level 5 warning prompt and level 6 alarm; The entire vehicle can be equipped with 8 surveillance cameras to monitor the surrounding situation in real-time; Install the driving locking mechanism, and the working device will no longer fluctuate up and down during the transition process.
Thirdly, it is more stable. Extended leg structure, increasing the stabilizing moment by about 18 tons per meter; The large cross-section hexagonal structure increases the bending resistance of the main arm by 10%; The large section vertical truss channel has a larger space and is more convenient for passage; Aircraft aluminum alloy material, 35% lighter in weight, improves compliance and stability.
Fourthly, it is more reliable. 8% extreme overturning test, far exceeding the industry requirement of 3%; A dedicated CAE team is involved in simulation testing during the design phase; Conduct stress patch testing after vehicle production to verify the correctness of theoretical design; A sound quality control system promotes the improvement of quality.
Fifth, more convenient. Upgrade the vehicle according to the actual needs of the customer and provide more convenience: add a stainless steel cover at the bottom of the work platform to protect the hydraulic steel pipe; Standard folding seat, more comfortable for long-term operation, reduces labor intensity; Double lights are added to the top of the vertical truss for high illumination height and wide range.