Views: 0 Author: Site Editor Publish Time: 2026-09-15 Origin: Site
The main hoist and auxiliary hoist of the rotary drilling rig are the core power components for equipment pile foundation construction and material take-off and landing. Their functional positioning and division of labor are clear, and they are accurately adapted to various complex infrastructure construction scenarios. The main hoist is the core working mechanism of the equipment, mainly responsible for the lifting and lowering operations of drill rods, drilling buckets, and heavy pile foundation machinery. It is a key component of borehole construction, ensuring the stable operation of core processes such as pile foundation drilling, lifting, and unloading throughout the process. The auxiliary hoist belongs to the auxiliary operation mechanism, which is mainly used for lifting lightweight materials such as casing, auxiliary equipment, and construction accessories. At the same time, it can cooperate with the main hoist to complete auxiliary operations such as leveling, auxiliary lifting, and emergency rescue. The two play their respective roles and cooperate in a coordinated manner, fully covering the needs of conventional pile foundation construction and special working conditions auxiliary operations, which is the foundation for ensuring the efficient operation of rotary drilling rigs.
The operating speed of the main and auxiliary winches follows the industry design logic of "stable operation under heavy loads and efficient operation under light loads", adapting to different construction rhythms. The main winch operation prioritizes stability, with a relatively smooth and uniform lifting speed, which can accurately control the drilling and lifting rate of the drilling tools, avoiding construction hazards such as drill rod shaking, hole wall collapse, and pile hole deviation caused by too fast speed, and ensuring the accuracy and construction quality of pile foundation drilling. The auxiliary winch focuses on operational efficiency, with faster running speed and more sensitive response. It is designed for auxiliary operations such as casing lifting and accessory transportation, and can quickly complete material takeoff and landing, reduce auxiliary process time, and effectively improve overall construction progress. The complementary adaptation of two speed modes enables the rotary drilling rig to achieve a balance between quality and efficiency in both core construction and auxiliary operations.
The safety control of the hoisting system is the core link of the construction safety of the rotary drilling rig, and the key points of the entire process control need to be implemented. Before operating the equipment, it is necessary to conduct a comprehensive inspection of the wear, breakage, and lubrication of the main and auxiliary hoist wire ropes, check whether the brake, limit device, and hydraulic pipeline are intact, and ensure that the safety protection components are functioning properly. During the homework process, strict adherence to load limit standards is required. When the main winch encounters resistance while lifting the drill, forced lifting is prohibited. The speed should be slowed down in a timely manner, and the cause of resistance should be investigated to prevent overloading from damaging equipment or causing safety accidents; The auxiliary winch is strictly prohibited from inclined pulling, inclined lifting, and overloading operations to avoid wire rope derailment and equipment falling. At the same time, it is necessary to rely on the equipment's built-in height limit and torque protection system to prevent overtravel operations and avoid mechanical failures and construction safety hazards from the source.
Normalized and standardized operation and maintenance are key to maintaining stable performance of the main and auxiliary winches and reducing the probability of failure. In daily construction, operators need to accurately switch between the main and auxiliary hoisting operation modes according to geological conditions and types of work, to prevent illegal mixing and rough operation. Regularly inspect and maintain the winch reducer, hydraulic system, and braking system, replace aging parts in a timely manner, replenish hydraulic oil, and lubricate the steel wire rope to ensure that the lifting force and operating speed are always within the standard range. Through standardized operation and regular maintenance, the failure of the hoisting system can be effectively reduced, the stability and safety of equipment operation can be improved, and the efficient, safe, and orderly progress of pile foundation construction projects can be guaranteed.
