Hitachi Construction Machinery has updated its EH4000AC-3 rigid dump truck to develop the EH4000AC-5.
With a machine operating weight of 427 tonnes, the rigid dump truck delivers a nominal payload of 242 tonnes.
By using metal fabrication technologies developed through the manufacturing of hydraulic excavators, the company has increased the durability and achieved the industry’s highest payload in the 400-tonne class.
After completing field tests at mining sites, the company plans to begin sales of the new rigid dump truck in 2025.
Hitachi showcased the EH4000AC-5 rigid dump truck for the first time at MinExpo in Las Vegas.
The EH4000AC-5 is equipped with the Hitachi AC drive system, which was cultivated through the current EH AC-3 series models. For the new rigid dump truck, Hitachi has strengthened the brakes, suspension and other aspects of the undercarriage to achieve smooth, stable driving and superior deceleration performance even under the industry’s highest payload of 242 tonnes.
As well, it provides a comfortable operator space and operating environment which enables the operator to achieve the desired level of performance.
Furthermore, the EH4000AC-5 is compatible to change to a fully electric specification equipped with batteries and trolley dynamic charging systems that receive power from overhead lines installed at mines is also compatible
Deceleration performance
The maximum speed is an industry-leading 65 km per hour. At the same time, it provides high productivity to customers with improved traction performance. The rigid. Dump truck is equipped with a new feature that allows operators to select from three different driving modes (High Power Mode, Power Mode and Eco Mode) according to the site environment.
Operators can select Eco Mode when they wish to reduce fuel consumption or High Power Mode to maximize driving performance for efficient operation.
In terms of the deceleration performance, the brake performance was enhanced by changing the hydraulic brakes from front dry brakes to wet brakes and enhancing the performance of the retarder auxiliary brakes. As a result, the rigid dump truck delivers stable braking force even in harsh mining environments.
Improved operability
The switches and monitors in a cab were completely redesigned to improve operability and comfort. Information regarding the safety conditions around the machine and loading conditions is displayed on the monitors to support safe and efficient operation by customers.
Consite Mine
The EH4000AC-5 is compatible with the Consite Mine service solution which remotely monitors the status of mining machinery. Consite Mine issues two types of reports including “Scheduled Reports” that inform customers of the machines’ operational status via email and a smartphone app and “Alarm Reports” that are issued whenever various sensors detect abnormalities in the machinery. By detecting abnormalities in the rigid dump truck and performing the required maintenance, downtime is able to be reduced.
