The JW-4G Overhead Catenary Inspection & Maintenance Vehicle is a high-performance, reliable rail equipment designed for the installation, inspection, maintenance and emergency repair of electrified railway overhead catenary systems. With a maximum operating speed of 120km/h, it adopts hydraulic transmission and a full hydraulic lifting and slewing working platform, ensuring efficient and safe operation in various railway working scenarios. It is widely used in standard gauge electrified railways, featuring stable performance, strong adaptability and easy operation, which can fully meet the daily operation and emergency support needs of railway catenary maintenance.
Equipped with a powerful Weichai engine and advanced braking system, the JW-4G vehicle ensures excellent traction and braking performance, even in harsh working environments. The automatic leveling working platform can adapt to curve superelevation, providing a safe and stable operating space for maintenance personnel. It can also be used for traction of materials, tools and personnel, realizing multi-functional application and improving work efficiency.
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Technical Parameters |
Specifications |
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Gauge |
1435mm (Standard Gauge) |
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Axle Arrangement |
2-B (B-2) / 4 Axles |
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Wheelbase |
2400mm |
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Wheel Diameter |
New Wheel: 840mm; Worn Wheel: 790mm |
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Service Weight |
Approx. 46~48t (Single Axle Weight: Approx. 11.5t) |
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Minimum Curve Radius |
100m (at 10km/h) |
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Maximum Operating Speed |
120km/h (Traction 50t) |
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Coupled Operating Speed |
120km/h |
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Climbing Capacity |
≥33‰ |
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Overall Dimensions (L×W×H) |
15930 × 3118 × 4480~4625 mm |
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Coupler |
Type 13/13B, Center Height: 880±10mm |
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Braking Distance |
≤400m (Initial Speed 80km/h, Straight Track); ≤800m (Initial Speed 120km/h, Straight Track) |
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Engine |
Weichai WP12.480, In-line 6-cylinder, EFI, Water-cooled, Turbocharged Air-to-air Intercooled |
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Rated Power |
353kW / 480HP |
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Displacement |
11.596L |
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Emission Standard |
National Ⅲ / Euro Ⅲ |
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Transmission |
Hydraulic Transmission (Voith, etc.), Stepless Speed Change |
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Starting Traction |
≥50kN |
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Braking System |
Main Brake: JZ-7 (JZ-7G) Pneumatic Brake; Foundation Brake: Single-sided Tread Brake Shoe with Automatic Clearance Adjustment; Parking Brake: Hand Brake/Parking Brake |
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Air Compressor |
1.08m³/min |
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Main Air Reservoir |
500L |
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Working Platform |
Full Hydraulic Lifting + Slewing Platform with Automatic Leveling (Adapting to Curve Superelevation); Main Platform: Lifting and Slewing for Catenary Wire and Lower Part Inspection; Side Platform: Avoiding Wires to Lift to High Position for Upper Structure Inspection |
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Interfaces |
Power Tool Interface, Pneumatic/Hydraulic Interface |
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Occupancy |
Approx. 15 Seats in Cab |
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Fuel Tank Capacity |
1000L |
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Hydraulic Oil Tank Capacity |
220L |
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Storage Battery |
2V×24 Pieces (NM-200) / 200Ah×4 |
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Operating Environment |
-25℃ ~ +45℃ |
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Application |
Overhead Catenary Installation, Adjustment, Inspection and Maintenance; Daily Patrol, Emergency Repair and Rescue; Traction of Materials, Tools and Personnel |
The JW-4G Catenary Inspection Vehicle are designed to ensure stability, safety and operability, including the following parts: