What factors affect the work efficiency of hydraulic excavators used in coal mines, and what are the supporting collaborative factors (system efficiency) and summary

The editor of Shandong Haoyun Heavy Industry Machinery Co., Ltd. summarizes the factors that affect the work efficiency of hydraulic excavators used in coal mines, as well as the supporting and collaborative factors (system efficiency).

Hydraulic excavators used in coal mines are not isolated operations, and their efficiency also depends on the compatibility with downstream equipment and the support of auxiliary systems.

1. Compatibility with transportation equipment

The “excavation efficiency” of excavators needs to match the “transportation efficiency” of trucks, otherwise there will be a “bottleneck effect”:

Capacity matching: If the ratio of excavator bucket volume to truck compartment volume is unreasonable, it will lead to an increase in truck waiting times or excavator waiting for trucks.

Quantity matching: If the number of trucks is insufficient, excavators will frequently wait; If there are too many trucks, it will cause congestion in the truck queue and waste transportation resources.

2. Support for auxiliary systems

Power supply guarantee: Underground excavators are mostly electric, and if the power supply line is unstable, it will cause the equipment to shut down;.

Coordination of gangue removal/obstacle clearing: If there are many hard rock interlayers in the coal seam, it is necessary to use crushing equipment to crush them in advance. Otherwise, the excavator will need to repeatedly excavate the hard rock, resulting in a sudden drop in efficiency; If the accumulated coal gangue at the work site is not cleaned up in a timely manner, it will limit the range of excavator movement and increase the difficulty of the operation.

Summary: The core logic of improving efficiency

To improve the work efficiency of hydraulic excavators used in coal mines, we need to start from four aspects: hardware optimization, environmental adaptation, human improvement, and system collaboration

1. Hardware side: Select equipment models that match the characteristics of coal seams and regularly maintain core components;
2. Environmental aspect: Clear obstacles at the work site in advance, optimize underground lighting and ventilation, and adjust the work plan according to weather/coal seam conditions;
3. Human end: Train drivers to master efficient operating skills and establish a comprehensive maintenance system;
4. System end: Ensure that the capacity and quantity of excavators and trucks match, ensuring the stable operation of auxiliary systems.

Through multi-dimensional collaboration, the actual operational efficiency of equipment can be improved, significantly reducing the unit energy consumption and cost of coal mining.