Insulated Bridge Crane

The Henan Mine QY Insulated Bridge Crane is a specialized piece of equipment designed and manufactured in strict compliance with dedicated insulated crane standards such as GB/T 14405-2011 and JB/T 8907-2017. Its core design incorporates a “double-girder load-bearing structure + full-dimensional insulation protection” approach. Lifting capacities range from 5 to 50 tons, with spans ranging from 8 to 35 meters. Insulation levels are customizable to Class F (10kV) or Class H (35kV), enabling safe operation in high-voltage live environments such as 10kV and 35kV. Through insulation upgrades to critical components—including main girders, end beams, hoisting mechanisms, and travel systems—the equipment completely eliminates current conduction risks. It combines the heavy-load stability and precise maneuverability of double-girder cranes, finding extensive application in substations, power plants, electrified railway maintenance, metallurgical arc furnace operations, and other live or near-live lifting scenarios. It provides comprehensive safety assurance for equipment installation, maintenance, and material transfer under live working conditions.

QY Insulated Bridge Crane

• Customizable Graded Insulation: Supports F-class and H-class insulation levels, precisely matched to the voltage rating of the work area, meeting high-voltage safety requirements;
• Critical Component Insulation Enhancement: Main and end beams feature high-strength insulating coatings (3-5mm thick) with ≥100kV withstand voltage. Lifting mechanisms’ hooks, wire ropes, and drums utilize insulating materials or protective sleeves—including specialized insulated wire ropes and insulated hook covers;
• Drive and Electrical Insulation: Insulating pads installed between wheels and rails of overhead and trolley travel mechanisms; insulated bearings used; electrical system employs insulated cables and terminals; control cabinets equipped with insulating isolation devices to prevent current conduction through equipment.

• Main girders utilize Q355B high-strength steel, formed through CNC plasma cutting and automated submerged arc welding. After comprehensive shot blasting for rust removal, an insulating coating is applied. Welding quality meets GB/T 12469-2019 Grade 1 standards, delivering exceptional bending and torsional resistance. Maintains structural integrity under 50t heavy-duty operation without deformation.
• Box-type dual-girder design ensures even load distribution and large bearing area. Paired with reinforced end beams and high-rigidity insulated wheel sets, it achieves 60% greater operational stability than single-girder cranes, minimizes start/stop impact, and prevents equipment sway or contact with live parts during lifting.
• Upgraded core transmission components: Gear reducers feature hardened gear surfaces, delivering over 96% transmission efficiency with low operational noise (≤75dB). Insulated electromagnetic brakes ensure smooth, reliable stopping with rapid lockup during power loss, preventing material drop.
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  QY Insulated Bridge Crane

  Intelligent Precision Control with Robust Safety Redundancy

  • Smart Insulation Control: Equipped with a PLC-based intelligent control system supporting variable frequency speed regulation. Lifting and travel speeds are infinitely adjustable from 0-10m/min with positioning accuracy of ±3mm, meeting precision handling demands for high-voltage equipment;
  • Multi-layered Safety Protection: Beyond standard overload protection, travel limit switches, collision prevention, and emergency braking, incorporates additional insulation performance monitoring and leakage detection alarm systems. Continuously monitors insulation status, triggering automatic shutdown and alarms upon insulation degradation or leakage.
  • Complete Compliance Certification: The product holds a National Special Equipment Manufacturing License (Grade A) certification, accompanied by comprehensive insulation performance test reports and product qualification certificates. It can smoothly pass safety audits in the power industry and inspections by special equipment inspection institutes.

• Proprietary Insulation Components: Core insulated parts—including insulated wheels, bearings, and steel cables—are independently developed and manufactured by Henan Mine. These components undergo over 1,500 hours of high-voltage fatigue testing, ensuring stable insulation performance with a failure rate 75% lower than industry averages.
• Strong Customization Capabilities: Tailored models—including low-clearance and high-temperature insulation variants (suited for electric arc furnace environments)—can be customized based on voltage levels (10kV/35kV), site dimensions, and lifting requirements, with span and lifting height precisely matched to site conditions.
• Exceptional insulation durability: Utilizes imported insulation coatings and specialized insulating materials, offering resistance to aging, moisture, and dust corrosion. Ensures long-term stable operation in environments ranging from -20°C to 60°C, with insulation performance validity exceeding 5 years;
• Rapid Delivery Assurance: Dedicated production workshops equipped with specialized insulation processing machinery enable delivery of standard models within 25-35 days and customized models within 45-60 days, meeting urgent maintenance demands in the power industry.
  

  QY Insulated Bridge Crane

• Power Industry: Installation and maintenance of large transformers, reactors, GIS switchgear, and other equipment in 10kV/35kV substations; auxiliary lifting operations in live areas for generators, steam turbines, and other equipment in power plants;
• Electrified Railways: Maintenance of high-speed/railway traction substation equipment; material hoisting near catenary systems; installation of equipment in energized zones at railway hubs;
• Metallurgical Industry: Auxiliary material hoisting and equipment maintenance in energized areas of electric arc furnace steelworks;
• Other Scenarios: Equipment hoisting at high-voltage testing sites; installation and maintenance of high-voltage equipment at renewable energy plants (PV/wind); transportation of military high-voltage testing equipment.
  

  QY Insulated Bridge Crane Parameters

• Stringent Insulation Quality Control: Each unit undergoes multiple specialized tests including high-voltage insulation testing, heavy-load testing, and leakage testing before shipment. Complete insulation performance reports and product certification documents are provided to ensure compliance with insulation standards;
• End-to-End Insulation Services: Free on-site assessments evaluate operating environments, voltage levels, and site conditions to deliver customized insulation solutions. Professional installation teams handle commissioning and assist clients in passing power industry safety audits and special inspection institute acceptance.
• Global Insulation Support Network: Over 480 service centers worldwide, staffed by 120+ certified high-voltage insulated crane engineers. 24/7 response guarantee.
• Warranty Commitment: 1-year warranty for the entire machine; 3-year warranty for core insulated components (insulated wheels, insulated bearings, insulated steel ropes). Free repair or replacement for non-human-induced damage during warranty period. Annual specialized insulation maintenance agreements available, including regular on-site insulation performance testing and maintenance.