Product Introduction
The QY70KH crane prioritizes operational efficiency and maneuverability, featuring advanced hydraulic systems such as electro-hydraulic proportional control and slewing buffer valves. It delivers exceptional micro-movement capability with smooth and precise operation. Its H-shaped outrigger structure (typically with a span of 5.75m longitudinally × 6.9m transversely) provides excellent operational stability. The QY70KH, renowned for its high reliability, robust power, and excellent maneuverability, is widely utilized in diverse infrastructure construction and lifting operations.
Product Advantage
High-power air-conditioners are equipped in driver' s cab and operator' s cab, heat transferring area of condenser is increased by 75%, displacement of compressor is increased by 20%, refrigeration effect is improved by above 25% relative to regular products, which meets the requirements of T3 working condition.
The layout mode of oil port of radiator is optimized, heat radiating area of core is increased by 50%, radiation power of hydraulic oil radiator is improved from 10kW to 18kW, permissible ambient temperature exceeds 55ºC, which meets the requirements for high temperature operation.
The protecting ply of wiring harness is produced according to QC/T29106-2004 Technical Conditions of Automobile Low-voltage Wiring Harness, heat-resistant temperature is increased to 105ºC, corrugated pipes are added for protection, protection class of plug-ins is IP67. The service life in high temperature operation exceeds 15 years.
Technical Parameters
| Description | Unit | Parameter value |
| Overall length | mm | 13900 |
| Overall width | mm | 2800 |
| Overall Height | mm | 3575 |
| Axle base | 1st ,2nd axle | mm | 1470 |
| 2nd ,3rd axle | 4105 |
| 3rd ,4th axle | 1350 |
| Wheel Base | mm | 2304+2075 |
| Total vehicle mass in travel configuration | kg | 43000 |
| Axle load | 1st and 2nd Axle | kg | 17000 |
| 3rd and 4th Axle | 26000 |
| Engine rated power | kw/(r/min) | 276/2200 |
| Engine rated torque | N.m/(r/min) | 1500/1400 |
| Engine rated rotational speed | r/min | 2100 |
| Max. travel speed | km/h | 80 |
| Min. steady travel speed | km/h | 3 |
| Min. turning diameter | m | 24 |
| Min. turning diameter at boom tip | m | 29 |
| Min. ground clearance | mm | 327 |
| Max. grade ability | % | 40 |
| Approach angle | ° | 19 |
| Departure angle | ° | 11 |
| Braking distance (at 30 km/h, full load ) | m | ≤10 |
| Oil consumption per 100km | L | 45 |
Product Uses
1. Infrastructure Construction in Plateau Regions
The QY70KH features an engine and hydraulic system optimized for plateau oxygen-deficient environments, effectively overcoming power loss issues. It is ideally suited for highway, railway, bridge, and tunnel construction in plateau regions, delivering stable and efficient performance in tasks such as steel structure hoisting and precast component installation, thereby ensuring progress on infrastructure projects at high altitudes.
2. Mountainous and Rugged Terrain Lifting Operations
Its chassis boasts exceptional cross-country capability and gradeability (select KH models feature high-grip tires and engine cylinder retarder braking), enabling it to navigate complex terrain with multiple slopes and uneven surfaces in mountainous and hilly regions. This facilitates equipment installation, wind turbine foundation construction, and similar operations.
3. Mining and Energy Project Development
This crane supports construction and maintenance of energy projects—including mines, petrochemical facilities, and power infrastructure—in high-altitude or mountainous regions. Its formidable lifting capacity and environmental resilience enable challenging tasks like heavy equipment hoisting and large component installation.
4. Special Climate & Remote Area Operations
The QY70KH features specialized designs for harsh climates with high winds, sand, extreme temperature fluctuations, and low temperatures (e.g., multi-stage cyclone air filters, engine heating function). This ensures high availability and reliability in remote areas, high-sand environments, or severe cold (engine low-temperature adaptability ranges from -30°C to -34.9°C).
Product Operate Guide
Before operation, thoroughly inspect the high-altitude adaptation configuration status and verify the normal functioning of the engine intake system and hydraulic system. Maintain absolute levelness of the crane during operation and strictly prohibit overloading. Monitor engine power reduction in high-altitude regions and appropriately reduce operational intensity. Operate the boom with exceptional smoothness, paying attention to wind load effects at high elevations. Regularly inspect the air filter and monitor hydraulic oil temperature. After operation, retract the boom, implement equipment freeze protection measures, and maintain detailed records of high-altitude operating data.
FAQ
1. INTERNAL OXIDATION IN FUSE BOX CAUSING GREEN CORROSION ON TERMINALS?
Caused by humid environment. Clean off oxidation and apply specialized electronic contact grease for moisture protection. Inspect device sealing integrity.
2. ORIGINAL VEHICLE LIGHTS DIM AFTER INSTALLING AUXILIARY LIGHTS?
Insufficient original vehicle power generation. Adding electrical components causes system voltage drop.
3. SEVERE INTERFERENCE IN THE DEVICE'S WALKIE-TALKIE OR RADIO?
Interference sources include spark plugs, generator carbon brushes, etc. Ensure the device's spark plug suppression resistor and generator filter capacitor are functioning properly.
4. UNUSUAL NOISE AT THE BOOM BASE DURING OPERATION?
Wear on the pins and bushings connecting the boom to the platform has caused excessive clearance. Replace the wear sleeves or pins.
5. GEAR OIL DRIPPING ONTO THE GROUND WHEN THE EQUIPMENT IS PARKED?
Damaged oil seals or breather on the final drive (travel motor reducer).
6. FRAME TWISTING SENSATION DURING STRAIGHT TRAVEL?
(For articulated equipment) Excessive wear and clearance in the articulation pins and bearings.
