Hydraulic synchronous lifting system is widely used in lifting old bridge field, accompanying hydraulic cylinder is developed based on controlling hazard of sudden failure in hydraulic lifting process. Keeping synchronous lifting with main cylinder in lifting process, supporting load safely when main cylinder or control system fails, pure mechanical supporting can be achieved after accompanying cylinder touches and supports component.

• Equipped with stepper motor to accompany without any clearance, electrodes speed adjustment;
• Avoid system damage caused by starting frequently;
• 5° anti-partial designed saddle, more applicable;
• Optimized hydraulic system integration makes construction more secure