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QY55KC
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Product Introduction
The QY55KC truck crane is designed for medium to heavy-duty lifting tasks. It is equipped with a powerful engine and a telescopic boom that allows for versatility in various lifting scenarios. The crane features advanced control systems for precise operation and a comfortable operator cab for a clear view during lifting operations.
Product Advantage
1.Uses high-strength steel independently developed , which has a high load-bearing capacity and stability, capable of lifting a weight of 55 tons.
2.Employs an advanced hydraulic system independently developed , which can achieve rapid and smooth lifting and lowering of heavy objects, improving work efficiency.
3.Equipped with a high-performance engine and transmission system, capable of providing strong power output and maintaining good working performance under different operating conditions.
4.Offers multiple working modes for selection, which can be adjusted according to actual work needs, providing more flexible operation methods.
5.Uses an intelligent control system, which is simple and convenient to operate, capable of providing more precise lifting and steering control, reducing operational difficulty and risk.
Technical Parameters
| Item | Unit | Parameter | |
| Dimensions (length×width×height) | mm | 13900*2800*3675 | |
| Wheel base | mm | 1470+4300+1350 | |
| Track(Front/ Rear ) | mm | 2314/2314/2063/2063 | |
| Front/ Rear overhang | mm | 2380/2150 | |
| Front/ Rear extension | mm | 2250/0 | |
| Total vehicle mass in travel configuration | kg | 42700 | |
| Axle load | 1st axle | kg | 8585 |
| 2nd axle | kg | 8585 | |
| 3rd axle | kg | 12765 | |
| 4th axle | kg | 12765 | |
| Engine rated power | kW/(r/min) | 276/2000 | |
| Max. net power | kW/(r/min) | 274/2000 | |
| Max. output torque | N.m/(r/min) | 1560/1200-1500 | |
| Max. travel speed | km/h | ≥90 | |
| Min. stable travel speed | km/h | 2.5~3 | |
| Min. turning diameter | m | ≤24 | |
| Min. turning diameter at boom tip | m | ≤29 | |
| Min. ground clearance | mm | 303.5 | |
| Approach angle | ° | 19 | |
| Departure angle | ° | 14 | |
| Braking distance (at 30 km/h ) | m | ≤10 | |
| Max. grade ability | % | ≥45 | |
| Fuel consumption per 100 km | L | 40 | |
| Exterior noise level | dB(A) | ≤88 | |
| Noise level at seated position | dB(A) | ≤90 | |
| Max. total rated lifting capacity | t | 55 | |
| Min. rated working radius | m | 3 | |
Product Uses
1. Material Handling in Mining Quarries
The QY55KC is exceptionally well-suited for use in mining quarries. Its powerful lifting capacity meets the demands of handling large stone materials in quarry operations. The Class G off-road chassis delivers excellent passability and climbing ability (maximum gradeability of 45%), making it ideal for navigating and working on the rugged terrain of mining quarries. High-grade electrical protection further ensures reliable operation in harsh environments.
2. Infrastructure Development and Municipal Engineering
This crane is widely deployed in construction sites, urban renewal projects, and general engineering tasks like communications and transportation. Its 44.5-meter 5-section U-shaped main boom and 16-meter fixed jib offer significant reach advantages, covering broader operational areas and adapting to complex, dynamic work environments.
3. Industrial Sites and Energy Projects
The QY55KC performs lifting operations in demanding environments like industrial plants, ports, oil fields, and mines. Its efficient hydraulic system (featuring proprietary dual-pump split-flow control technology) delivers outstanding composite motion control, meeting high-intensity, high-efficiency operational demands.
4. Narrow or Complex Terrain Operations
Equipped with a Class G off-road chassis (19° approach angle, 14° departure angle, 25° ramp angle) and excellent maneuverability (maximum travel speed 90 km/h), the QY55KC adapts to confined spaces like narrow streets, factory compounds, or uneven terrain with poor road conditions.
5. Diverse Operations Requiring Rapid Relocation
The QY55KC delivers robust lifting performance with industry-leading capabilities in high-frequency lifting scenarios. It covers diverse operational demands from lower to select higher tonnage requirements, offering strong job acquisition potential. Its high travel speed facilitates swift relocation between different work sites.
Product Operate Guide
Before operation, check that the outriggers are fully extended and ensure the ground is solid. Keep the crane level during operation and never overload it. Extend and retract the boom smoothly, maintaining a safe distance from surrounding obstacles. Rotate slowly and steadily, avoiding abrupt stops or turns. Regularly inspect the wire rope for wear. After completing the task, retract the boom, secure the hook, and maintain daily equipment maintenance records.
FAQ
1. PRESSURE TEST FITTINGS INSTALLED AT TEST PORTS FREQUENTLY FAIL?
Failure to slowly relieve pressure after testing causes instantaneous high-pressure oil impact, damaging the ball valve. Causes include improper operation or poor fitting quality.
2. HYDRAULIC TANK LEVEL GAUGE DISPLAYS INACCURATELY?
The gauge float is stuck, or oil contamination on the outer wall of the transparent tube. Cleaning or replacement is required.
3. HYDRAULIC HOSES BECOME ABNORMALLY HOT AFTER SYSTEM OPERATION?
Internal lining may have peeled off due to aging, causing localized throttling and overheating—immediately replace.
4. ACCUMULATOR PRESSURE RETENTION TIME IS TOO SHORT?
Accumulator bladder rupture or charging valve leakage—recharge with nitrogen or replace.
5. DOES THE SPOOL RESET SPRING IN THE DIRECTIONAL CONTROL VALVE FREQUENTLY BREAK?
The spool may be stuck due to contaminated oil. Forced operation by the operator causes the spring to overload and shear.
6. DURING TILTED OPERATION, DOES MOVEMENT IN ONE DIRECTION AUTOMATICALLY SLOW DOWN?
This may occur due to the spool deviating from the neutral position under gravity or changes in internal leakage paths within the actuator.
