Juancheng County 300KG Lifting UAV Rental Operation Guide - Level 8 Wind Resistance Technology and Severe Weather Guarantee

With the advancement of rural revitalization and infrastructure upgrade projects in Juancheng County, the demand for leasing high-load lifting drones is growing day by day. Relying on the core advantages of "level 8 wind resistance, severe weather adaptability, and heavy load efficiency", the 300KG-class lifting drone has effectively solved the problem of building material transportation in complex terrain (such as Yellow River beach areas, rural ravines) and severe weather in the county. This guide is based on the characteristics of the construction environment in Juancheng County, combined with the technical characteristics and compliance requirements of rental equipment, and standardizes the entire process of rental operations in terms of rental qualification review, operation preparation, wind resistance operation specifications, severe weather protection, emergency response, etc., to help improve project construction efficiency and operation safety under extreme conditions.

1. Scope of application and core advantages

(1) Applicable scenarios

This guide is applicable to 300KG lifting drone rental operations for various engineering constructions within Juancheng County. It is especially suitable for the following scenarios: the transfer of infrastructure construction materials in the Yellow River beach area, the supply of building materials for rural road upgrades, the delivery of small bridge construction materials in remote areas of the county, and the peripheral supporting projects of the Mudan Airport clearance area (clearance control requirements must be strictly followed) and other areas where traditional machinery is difficult to intervene or is greatly affected by severe weather. The building materials that can be lifted include standard steel bundles, cement bags, medium-sized prefabricated parts, steel pipes, etc. The single rated lifting weight does not exceed 300KG. The rental equipment can be flexibly deployed according to the operation needs, adapting to short-term surprise construction and long-term normal operations.

(2) Core technical advantages

1. Level 8 wind-resistant core technology: It adopts a six-axis twelve-propeller full-drive layout and a tilted paddle design to achieve precise posture correction and steady-state control. It can operate stably in an environment with instantaneous wind speed ≤20.7m/s (Level 8), and is suitable for Juancheng County plain wind field and Yellow River beach area gust environment.； 2. Stable adaptation for heavy loads: The fuselage adopts a high-strength carbon fiber composite structure and is equipped with an independent center of gravity adjustment system. When the load mass changes, the height of the load compartment can be adjusted in real time to ensure that the center of gravity coincides, effectively controls the overturning moment, and ensures the stability of 300KG heavy load lifting. ； 3. Guaranteed adaptability to severe weather: equipped with an all-weather avionics system, with low-visibility environment sensing, rainy day anti-short circuit protection, and low-temperature battery preheating technology, it can start operations normally in complex weather such as low temperature and light fog. ； 4. Flexible leasing adaptation: The lessor provides a full set of operation and maintenance guarantees, including professional operators, spare parts supply and real-time technical support. The leasing plan can be flexibly customized according to the operation cycle to reduce the equipment investment cost of the construction party.

2. Preparation before leasing operation

(1) Leasing qualification and compliance review

1. Qualifications of the lessor: Review the business license of the lessor and the business scope includes drone leasing services. The equipment must have an airworthiness license from the civil aviation department. The operator must hold a drone pilot license of the corresponding level and a special hoisting certification. A two-person operation system (pilot + observer) shall be implemented.； 2. Insurance compliance: Confirm that the rental equipment has been insured with liability insurance to cover equipment damage, third-party property loss and casualty risks, and keep the insurance certificate for record. ； 3. Airspace approval: The lessor shall cooperate with the construction party to apply for a flight plan in advance through the National Unmanned Aircraft Integrated Comprehensive Supervision Service Platform, and clarify whether the operation area involves the control range of the Mudan Airport Clearance Zone, and entry into the no-fly zone is strictly prohibited. ； 4. Signing of a lease agreement: Clarify the rights and responsibilities of both parties, including key terms such as equipment operation and maintenance responsibilities, division of operational safety responsibilities, failure compensation standards, lease period and cost settlement methods.

(2) Environment and load assessment

1. Environmental and meteorological assessment: Jointly conduct an on-site survey of the operating area with the lessor, focusing on verifying the meteorological conditions. Combined with the level 8 wind resistance characteristics, it is confirmed that the ground wind speed is ≤8m/s, the instantaneous gust is ≤20.7m/s, and the visibility is ≥0.8km during the operation period.； Using wind profile radar monitoring data to avoid turbulence risks, operations in the Yellow River floodplain area need to additionally assess the impact of sand and dust weather ； 2. Load confirmation: Accurately measure the weight of the lifting building materials. Overloading is strictly prohibited (it is recommended to control it at 80% of the rated load). For irregular objects, the lessor’s technical staff will assist in adjusting the counterweight to ensure that the center of gravity is directly below the hook. ； 3. Path planning: The lessor uses 3D modeling to generate a digital twin model of the operating area, plans the optimal wind-resistant flight path, avoids strong wind channels, sets take-off and landing points, hovering points (error ≤ 0.1m) and emergency landing areas in severe weather, and marks cables, trees and other obstacles.

(3) Handover and debugging of rental equipment

1. Equipment handover and acceptance: Both parties jointly check that there is no damage to the appearance of the equipment and that there are no cracks in the structural parts, confirm that key components such as the six-axis twelve-propeller power system, center of gravity adjustment system, and obstacle avoidance system are intact, and keep the handover and acceptance record.； 2. Special debugging: The lessor’s technicians tested the performance of the 8-level wind resistance mode and calibrated the GPS positioning and multi-dimensional obstacle avoidance system. ； Check the battery status to make sure the battery is full (replace it immediately if it is below 80%), and test the low-temperature preheating function ； 3. Hoisting system test: Check the wear of the sling, test the function of the one-button emergency release device, and ensure that the hook safety device is reliable ； Adjust the length of the sling according to the heavy load characteristics of 300KG so that the horizontal angle of the hoisted object after it is lifted from the ground is <3° ； 4. Ground support: The take-off and landing points need to be smooth and hardened and marked with warning lines (radius ≥ 50 meters) to prevent irrelevant personnel from entering. ； The lessor is equipped with key spare parts such as propellers and spare batteries as well as basic maintenance tools on site.

3. Core construction technical operating specifications (including special requirements for wind resistance and severe weather)

(1) Hoisting implementation process

1. Pre-hoisting test: conduct an unloaded test flight in a safe area to verify the stability of the 8-level wind resistance mode； Then conduct a full-load test hoisting, hover for 5 minutes to observe the load swing and the working status of the center of gravity adjustment system, and suppress the swing through the flight control "wind-resistant hanging mode" ； 2. Special wind-resistant operations: Adopt the strategy of "taking off and landing in the wind, flying at low speed and steady", ascending vertically to a height of 5 meters, hovering and stabilizing before moving, the flight speed does not exceed 1.5m/s, and a large radius is maintained for smooth transition when turning. ； When encountering gusts of wind, the pilot activates the attitude lock function to prevent the fuselage from deflecting ； 3. Operations in bad weather: Enable the infrared obstacle avoidance function in light foggy weather, ensure that the fuselage protection and sealing are intact when operating in rainy days, and start battery preheating 30 minutes in advance in low temperature environments ； 4. Accurate delivery: After arriving at the target point, the pilot concentrates on maintaining the hovering posture. After the observer confirms that the delivery area is safe, he issues a delivery instruction. The delivery can be completed through automatic throwing or ground-assisted loose hooks to ensure positioning accuracy (horizontal error ≤ 2cm, vertical error ≤ 5cm).

(2) Efficient operation optimization skills

1. Wind-resistant path optimization: For repetitive lifting tasks, the wind-resistant flight path optimized by wind field analysis is saved, and the fully autonomous lifting mode is enabled to reduce manual operation errors.； 2. Collaboration in operation and maintenance of rental equipment: The lessor arranges dedicated personnel to be on-site to monitor the status of the equipment in real time. The battery adopts the "rotation charging + backup battery" mode to ensure the continuity of operations. ； After daily operation, the lessor will complete equipment cleaning and basic inspection. ； 3. Severe weather warning linkage: Establish a real-time linkage mechanism with the meteorological department to obtain early warning information on strong winds, rainfall, low temperatures, etc., and rationally adjust operating periods to avoid extreme weather risks.

4. Core requirements for safety management and control

1. Real-time monitoring: Turn on the 4K high-definition camera and real-time image transmission system throughout the process. The ground station realizes millisecond-level data interaction through 5G, focusing on monitoring the fuselage attitude, load status, battery power, motor temperature and wind speed changes. If the motor temperature exceeds 60°C or the instantaneous wind speed is close to the 8-level threshold, the flight status will be adjusted immediately.； 2. Control of restricted areas: Set up a warning area in the operation area, arrange for dedicated personnel to be on duty, and strictly prohibit entry by unrelated personnel. The flight altitude generally does not exceed 120 meters. Strictly abide by the low-altitude flight altitude restrictions of Juancheng County and Shandong Province, and avoid the air clearance control area of ​​​​Mudan Airport. ； 3. Record archiving: The lessor records the aircraft model, load, environmental parameters, flight time, equipment status and abnormal conditions of each operation in detail. The data retention period is ≥ 1 year, and regularly reviews with the construction party to optimize the operation strategy. ； 4. Maintenance of rental equipment: A "daily inspection and weekly maintenance" system is implemented. The lessor is responsible for cleaning the motor dust and fuselage stains every day, lubricating the joint bearings every week, and testing the performance of the wind resistance system. ； The battery storage temperature is controlled at 15-25°C to avoid deep discharge.