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WTJ5040JKT passenger boarding stairs is developed by Jiangsu Tianyi Airport Special Equipment Co., LTD. "Step height can be changed" first class passenger boarding stairs, which adopts Qingling QL1070A1KAY type second class chassis modification. The passenger ladder car is designed according to the principle of parallel four-sided rows, which can be adjusted stepless according to the height of the aircraft door. No matter how it is adjusted, the pedal and the upper platform are always in a horizontal position and have a continuous ladder body.
The front of the platform is equipped with two sets of safety devices for docking aircraft, and the cockpit is equipped with platform height display. The platform height range of the product is 2400-4400mm. It can be widely used in A310, A318, A319, A320, A321, A330, A340, B707, B727, B737, B757, B767, DC8, IL-18, IL-62, MD80 and other series of aircraft, suitable for large, medium and small airport airlines.
| Longitudinal center distanceName | Technical parameter | ||
| Overall dimensions (L × W × H)mm | 8180×2100×3380 | ||
| Platform dimensions (L × W) mm | 2150×1700 | ||
| Ladder body armrest height mm | 830 | ||
| Front suspension mm | 1015 | ||
| Rear suspension mm | 3260 | ||
| Wheelbase mm | 3815 | ||
| Wheel track mm | Front track | 1504 | |
| Rear track | 1425 | ||
| Lateral center distance of support foot mm | Front stay | 1900 | |
| Back stay | 1900 | ||
| Longitudinal center distance mm | 3815 | ||
| Extension mm | 545 | ||
| Ladder within the body width mm | Ladder body | 1400 | |
| Stern ladder | 1400 | ||
| Step series | Fixed step | 18 | |
| Movable tail ladder | 4 | ||
| Pedal height mm (platform above ground 2400/4400) | 85-200 | ||
| Chassis model | QL1070A1KAY | ||
| Engine model | 4KH1-TCNG40 | ||
| Total vehicle weight kg | 4900 | ||
| Front axle load (allowable load) kg | 2040（2580） | ||
| Rear axle load (allowable load)kg | 2860（4720） | ||
| Maximum allowable speed km/h | Travel speed | 80 | |
| Operating travel speed | 3 | ||
| Departure Angle ° | 11 | ||
| Approach Angle° | 23.8 | ||
| Tilt Angle ° | 15-39 | ||
| Platform and horizontal plane Angle° | -1~0.5 | ||
| Tail turntable Angle° | 90 | ||
| Telescopic platform swing Angle° | ±9 | ||
| Telescopic platform swing Angle mm | 180 | ||
| Pedal size (L × W) mm | 300×1400 | ||
| Platform handrail height mm | 1020 | ||
| Platform travel mm | 300 | ||
| Working platform lifting height mm | 2400-4400 | ||
| Platform bearing number | 8 | ||
| Total carrying capacity | 50 | ||
| Maximum distance between front segment of platform and bulwarks mm | 1200 | ||
| Operating ambient temperature ℃ | -20~50 | ||
| Ambient relative humidity % | 20-100 | ||
| Hydraulic tank volume L | 78 | ||
| Hydraulic system pressure MPa | 12 | ||
| Diesel tank volumeL | 100 | ||
| Tyre specification | 7.00-16 | ||
| voltage V | 12 | ||
| Hydraulic oil type | 10# aviation ground hydraulic oil | ||
