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The ZOOMLION QY70K-II truck crane is a robust and versatile lifting solution for construction sites and heavy industries. With a lifting capacity that can handle substantial weights, it is engineered for efficiency, safety, and reliability. This crane model is equipped with advanced control systems and a durable build to ensure optimal performance in various lifting tasks.
Advanced Cab Design: The full dimension flat-head cab is mounted on a chassis with a fully covered walking surface, providing a safe and comfortable environment. The crane is equipped with double H-type outriggers, an optional fifth jack, and 360-degree operation capabilities for versatile boom and power system configurations.
Long Reach Boom: Boasting the longest boom in its class, the five-section oval cross-section boom features special sliders, an aligning device, and high-tension steel plates for smooth operation, reliable alignment, reduced weight, and enhanced lifting capacity.
Multi-Section Jib: The crane is fitted with a bi-part jib that includes both lattice and box sections for added versatility in lifting operations.
Telescoping Mechanism: Utilizing a double cylinder plus ropes system for boom extension, the thick cables and high-quality imported bearings ensure reliable performance.
Hydraulic Transmission: Both the superstructure and chassis benefit from hydraulic transmission, allowing for stepless speed regulation of each mechanism, resulting in smooth movements and ease of operation.
Winch Systems: The main and auxiliary winch systems can be powered by a single or double pump configuration. The variable displacement motor is efficient, offering high torque at low speeds for heavy loads and higher speeds for lighter loads.
Slewing System: Equipped with a planetary reducer and constant closed-type brake, the slewing system features a free sliding function. The straight-tooth slewing bearing, activated by a motor and a buffer valve in the hydraulic system, ensures smooth and reliable inching control.
Counterweight Design: The counterweight is strategically positioned high at the rear of the machine, allowing for greater slewing space and enhanced stability. It comes with a standard 4-ton counterweight, with an optional 1-ton counterweight available.
Safety Equipment: The crane is equipped with an array of safety devices, including a Load Moment Indicator (LMI), hoist limit switch, outrigger pinning device, and an electric level gauge. Illuminators are also provided for night operations.
Operator's Cab: A streamlined, integrated operator's cab with a full view is equipped with air-conditioning, a roll-up sun shield, a shock-absorbing adjustable seat, and features for soundproofing and heat insulation.
Mobility and Stability: With a lower center of gravity, the crane offers excellent stability, high travel speeds, and maneuverability, facilitating quick transfers between job sites.
Superior Welding Technology: The structural members are crafted using advanced welding techniques with welding robots, ensuring reliable quality and structural integrity.
| Category | Item | Unit | Parameter | ||
|---|---|---|---|---|---|
| Main Lifting Performance | Max. total rated lifting capacity | t | 70 | ||
| Min. rated working radius | m | 3 | |||
| Turning radius at turntable tail | mm | 3550 | |||
| Max. load moment | Base boom | kN. m | 2303 | ||
| Fully-extended boom | kN. m | 1129 | |||
| Fully-extended boom + Jib | kN. m | 580.2 | |||
| Outrigger span | Longitudinal | m | 6.1 | ||
| Lateral | m | 7.3 | |||
| Hoist height | Base boom | m | 11.8 | ||
| Fully-extended boom | m | 44.2 | |||
| Fully-extended boom + Jib | m | 59.4 | |||
| Boom length | Base boom | m | 11.6 | ||
| Fully-extended boom | m | 44.5 | |||
| Fully-extended boom + Jib | m | 59.5 | |||
| Jib offset angle | ° | 0, 15, 30 | |||
| Working Speed |
Elevating time | Boom raising | s | 60 | |
| Boom lowering | s | 80 | |||
| Telescoping time | Fully extended | s | 150 | ||
| Fully retracted | s | 100 | |||
| Max. swing speed | r/min | 2 | |||
| Outrigger extending and retracting time | Outrigger beam |
Extending Simultaneously |
s | 30 | |
| Retracting Simultaneously |
s | 20 | |||
| Outrigger jack |
Extending Simultaneously |
s | 35 | ||
| Retracting Simultaneously |
s | 30 | |||
| Hoisting speed (single line) |
Main winch | Full load | m/min | 75 | |
| No load | m/min | 130 | |||
| Auxiliary winch | Full load | m/min | 98 | ||
| No load | m/min | 108 | |||
| Noise | Exterior noise level | dB (A) | ≤ 122 | ||
| Noise level at seated position | dB (A) | ≤ 90 | |||
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