The application of hybrid power system in concrete shotcrete machine has significantly improved the reliability and environmental adaptability of the equipment. The following is an in-depth analysis of its core advantages:
I. Ensure continuous operation and emergency response capabilities
1. Electric/diesel dual-mode switching
The hybrid power design of diesel engine and electric motor is complementary. When the tunnel power supply is interrupted or the voltage is unstable, it can quickly switch to diesel power to maintain key functions (such as cleaning pumping system, retracting and releasing mechanical arms) to avoid concrete solidification and blockage. For example, the ZXP4017 concrete shotcrete machine of Zhengxun Heavy Industry can still complete emergency cleaning operations during power outages, reducing the risk of downtime.
2. Adaptability to extreme working conditions
In underground environments with high temperature, high humidity or limited ventilation, diesel power can be used as a backup guarantee, while electric drive is more environmentally friendly and energy-saving under normal working conditions, achieving "one machine, multiple scenarios" coverage.
II. Efficiency and cost optimization
1. Reduce downtime
The hybrid system supports fast switching, and there is no need to shut down completely for equipment maintenance or sudden failure. For example, the Blue Ocean Intelligent concrete shotcrete machine uses diesel power to complete the arm reset, saving more than 30% of the fault handling time.
2. Dynamic matching of energy consumption
Electric drive is used for stable spraying operations, and diesel power is used to cope with high loads or emergency needs. The comprehensive energy consumption is reduced by 15%-20% compared with a single power system.
III. Safety and environmental protection improvement
1. Dust and emission control
In electric mode, the operation noise is low and the exhaust gas emission is zero. With the dust removal system, the dust concentration in the working area can be controlled within 10mg/m³, improving the air quality in the tunnel.
2. Remote operation coordination
Hybrid power supports full remote control operation, and personnel are away from the spraying surface, reducing the risk of collapse or flying stone injury, especially in dangerous areas such as fault fracture zones.
IV. Maintenance convenience and equipment life
1. Modular design
The power system adopts an independent module layout, and there is no need to disassemble the whole system during maintenance. For example, the diesel engine and the motor are placed in separate cabins, and the time for replacing key components is shortened by 50%.
2. Intelligent fault isolation
When a power source is abnormal, the control system automatically isolates the faulty module and switches to the backup power to avoid collateral damage, and the comprehensive equipment failure rate is reduced by 40%.
Typical case comparison
In a tunnel project of a hydropower station in the southwest, the single-power concrete shotcrete machine was shut down 6 times a month due to power grid fluctuations, while the hybrid model was shut down only once through diesel backup, the monthly injection volume increased by 25%, and the rebound rate was stabilized below 10%.