New energy is sweeping all walks of life in full swing.，Especially in China's auto industry.，Rapid development of new energy，No matter from the energy situation and policy.，Or cost of use and driving experience?，New energy vehicles have obvious advantages.，Sales now account for more than 30 percent%，It is only a matter of time before they surpass fuel vehicles.。In the field of engineering and mining machinery，New energy is not popular.，Although almost all major manufacturers are making efforts in the field of new energy.，But after years of development,，Sales of new energy products accounted for only single digits.。

The bottleneck of the application of new energy products, especially electric products, in mining machinery is mainly the high intensity of use and the huge demand for power.，At present, the energy density of power batteries is insufficient.，It is obviously unrealistic to stack a large number of power batteries to meet long-term power demand.；Frequent energy replenishment will affect production efficiency.；Electric replacement will increase the purchase cost of power batteries.。So，At present, new energy products are mainly used in the following scenarios.：1，Underground construction；2，Fixed small-area site；3，Scenes with low work intensity；4，Self-charging scenario。

There is a kind of self-charging scenario in mine construction.，That is the mine card heavy load downhill.，Charging the battery with the potential energy of the loaded material，To meet all or most of the energy requirements of the duty cycle.。Under suitable working conditions，The vehicle can work repeatedly by recovering the braking energy when going downhill.，No additional charging or only a small amount of charging is required to meet the use requirements.。

However，Most open-pit mines do not have the conditions of heavy load downhill.，The dump truck needs to climb out of the mine with a heavy load.，Even climb up the dump.，In this scenario, the range and duration of existing power batteries are generally low.，Requires frequent charging or power changes。For this reason，Mainstream manufacturers at home and abroad are exploring new energy solutions suitable for most scenarios.。Held in Las Vegas, USA in 2021MINExpoGo，The world's mainstream manufacturers have come up with vague plans.，Pure electricity、Hybrid、Hydrogen fuel、Stringing，Even solar panels are used.，But you can see it in the fog.，Mixing multiple forms may be the way of the future。Before there was an ideal energy source.，A combination of existing technologies may be the best solution.。

Wonderful use，Be of one mind。As an international leading enterprise，Zhonglian Mining Machinery has developed a unique style，Creative use of pure electric mining wide-body dump truck+Double-source power scheme for stringing，Solve this worldwide problem at one stroke.。The core of this scheme lies in，Solve the problem of insufficient power battery endurance by means of power grid supply，The vehicle does not need to be charged or changed.，It can achieve unlimited endurance.，Greatly improve operational efficiency，Thoroughly solve the pain points of the industry。

Of Zoomlion Mining MachineZT115DPEV Vehicle model ，Rated load: 70t，With pure electricityZT115EVBased on the vehicle model，The capacity of the power battery is reduced.，Pantograph and control components for external power supply are added.。When driving directly under the overhead line，Raise the pantograph，The current from the overhead line is converted and supplied to the motor to drive the vehicle，It also charges the power battery.。When leaving the overhead line section，The vehicle status is switched to normal driving，At this time, the application is the same as that of pure electric vehicles。

Overhead line power supply technology has appeared for more than a hundred years.，It is widely used in rail transit and other transportation fields.，Its application in the field of mining has a history of decades abroad.，In the past, the price of oil was relatively low.，It is not widely used.。With the increasing pressure of low-carbon emission reduction,，Stringing will be used more and more in mines。 Usually ，In this way, the line will not be strung in the whole operation cycle of the vehicle.，Stringing on one side only on the ramp of a fixed route，Provide power for the vehicle to go uphill under heavy load。

Pure electric mining wide-body dump truck of Zhonglian Mining Machinery+The dual-source power scheme of stringing not only solves the problem of power battery endurance，At the same time, it can improve the productivity of the vehicle.。Usually in one working cyclic，Heavy-duty uphill is the slowest part of the operation.，Ordinary fuel vehicles on continuous ramps are generally only 8~11km/hThe speed of，Ordinary pure electric vehicles are limited by power battery power and thermal management.，The situation is similar，And ZoomlionZT115DPEVNot limited by power battery，It uses more powerful dual motors and 4-speed automatic transmission.，Heavy duty continuous ramp（10%Slope）The speed of the＞15km/h，This shortens the cycle times，Increased productivity。

While providing power to the vehicles，Overhead lines will restrict the driving path of vehicles to a certain extent.。At present，The single-arm pantograph similar to rail transit is widely used in the world.，There is no degree of freedom in any direction other than up and down，The car is nearly 8 widemVehicles can only be accepted.±2mLateral offset of left and right，Otherwise, the power will be cut off.。The width of the car is only 4..2mZhonglianZT115DPEV Vehicle model ，Original double-regulation self-following pantograph，Pantograph can move horizontally±1m，Swing movement±0.7m，Total adjustment range of sliding contact line and pantograph 5.3m，Small turning radius still makes it easy to drive fast，Greatly improved agility and driving experience。

At present，Of Zoomlion Mining MachineZT115DPEVIt has been put into trial operation in a mine in China.，The test effect is good，And has wide application prospect，This also means that Zhonglian Mining Machinery has been in the forefront of the industry in the research and development of mining machinery products.。Electrification is one of the important trends in the future development of mining machinery.，Stringing is one of the important ways to supply power for mobile devices.，Can be combined with stringing mode，It will be an important opportunity for new energy products。Zhonglian Mining Machinery is relying on its strong technical strength.，Continuous research and development of products to better meet customer needs，Contributing to the High Quality Development of Mining Industry。