Production Test Report of MAXTECH 4t8m Stiff Boom Marine Crane
I. Test Background
The MAXTECH 4t8m Stiff Boom Crane is designed to address the diverse lifting needs in industrial settings, especially in the demanding environments of shipyards and ports. Given its significance in enhancing operational efficiency and safety, a comprehensive production test was conducted to verify its compliance with strict quality and performance benchmarks.
II. Crane Parameters
| Parameter Name | Parameter Details |
| Safe Load Capacity | 4t at a slewing radius of 8m |
| Slewing Radius | 3m - 8m |
| Slewing Angle | 360° |
| Lifting Height | 10m |
| Motor | Model Y160L - 4 - 15KW |
| Gear Pump | Model CB - 40 |
III. Test Items and Results
(I) Safe Load Capacity Test
1. Test Method: At a slewing radius of 8m, the test involved incrementally adding weights to the lifting hook until the safe load capacity of 4t was reached. The load was then maintained for an extended period to assess the crane's structural integrity and operational stability.
2. Test Result: The Stiff Boom Marine Crane demonstrated remarkable stability throughout the test. Its robust structure withstood the load without any signs of deformation or stress fractures. The hoisting mechanism, including the ropes and pulleys, functioned flawlessly, and the braking system engaged promptly and securely, meeting all safety standards.
(II) Slewing Radius Test
1. Test Method: Using a calibrated measuring device, the crane was operated to slew through the full range of its radius, from 3m to 8m. Multiple cycles were performed to ensure consistent and accurate positioning.
2. Test Result: The slewing mechanism exhibited high precision, with negligible deviation from the intended radius settings. The smooth operation of the gears and bearings indicated minimal wear and tear, promising long - term reliability.
(III) Slewing Angle Test
1. Test Method: A precision angle - measuring instrument was used to monitor the crane's slewing angle as it completed multiple 360° rotations. The test evaluated the accuracy of the angle control system and the smoothness of the rotation.
2. Test Result: The crane achieved an outstanding level of accuracy, with each rotation completing precisely at 360°. The rotation was smooth and free from vibrations or jerks, ensuring safe and efficient load handling.
(IV) Lifting Height Test
1. Test Method: With a load equivalent to the maximum safe capacity, the crane was used to lift the load to its maximum height of 10m. The hoisting speed, acceleration, and deceleration were monitored to ensure a stable lifting process.
2. Test Result: The hoisting system, powered by the Y160L - 4 - 15KW motor, demonstrated sufficient power to lift the load quickly and smoothly. The control system allowed for precise height adjustment, meeting the requirements for various lifting tasks.
(V) Motor Performance Test
1. Test Method: Under simulated load conditions, the motor's electrical parameters, including current, voltage, and power consumption, were measured. The motor's speed and torque were also monitored to assess its performance under different loads.
2. Test Result: The motor maintained a stable operation across all load conditions, with its electrical parameters remaining within the specified limits. The consistent speed and torque output ensured reliable and efficient operation of the crane.
(VI) Gear Pump Performance Test
1. Test Method: The gear pump's performance was evaluated by measuring its flow rate and pressure output at different operating conditions. Leakage tests were also conducted to ensure the pump's integrity.
2. Test Result: The CB - 40 gear pump delivered a consistent flow rate and maintained a stable pressure, even under high - load conditions. No significant leakage was detected, indicating its reliability in powering the crane's hydraulic system.
IV. Applications in Ship and Port Operations
1. Ship Loading and Unloading: In ports, the MAXTECH 4t8m Stiff Boom Crane serves as a crucial tool for loading and unloading cargo from ships. Its 360° slewing angle and adjustable slewing radius allow it to reach different areas of the ship's deck with ease. Whether it's loading containers, machinery parts, or bulk materials, the crane's 4t safe load capacity at an 8m radius and 10m lifting height can handle a wide range of cargo sizes and weights.
2. Shipbuilding and Repair: In shipyards, this Electrical Crane is used for various tasks during ship construction and repair. It can lift heavy components such as engine parts, hull sections, and equipment onto ships. The precise control of the lifting height and slewing radius enables workers to position these components accurately, reducing the risk of damage and improving the efficiency of the shipbuilding process.
3. General Port Maintenance: The Lifting Crane is also utilized for general port maintenance tasks. It can be used to lift and move maintenance equipment, repair tools, and construction materials around the port. Its compact design and maneuverability make it suitable for operating in tight spaces, such as between storage containers or near dockside structures.
V. Test Summary
The MAXTECH 4t8m Stiff Boom Crane has successfully passed all production tests, demonstrating its excellent performance and reliability. With its impressive parameters and proven capabilities, it is well - suited for the demanding tasks in ship and port operations. Its ability to handle heavy loads, precise positioning, and smooth operation will undoubtedly contribute to increased efficiency and safety in these industries.