Hitachi Construction Machinery Co., Ltd. has launched the EX1200-7 mining excavator featuring a choice of engines for compliance with emission regulations in different jurisdictions as well as greater capacity than previous models and improvements in fuel economy, ease-of-use, maintenance, and comfort.
The main features are as follows. Aluminum Core
(Hitachi Construction Machinery Co., Ltd.)
The SR2000G-6 track-mounted soil recycler on sale in the Japanese market complies with the 2014 emission standards for non-road vehicles. Soil recyclers are machines for the efficient recycling of the spoil left over from activities such as earthmoving, dam construction, and dredging.
The main features are as follows.
(Hitachi Construction Machinery Co., Ltd.)
[2] SR2000G-6 track-mounted soil recycler
Hitachi Construction Machinery has developed an object detection system that provides the operator of the hydraulic excavator with an image of the region around the vehicle overlaid with detection information.
The main features are as follows.
(Hitachi Construction Machinery Co., Ltd.)
[3] Overview of object detection system
Hitachi Construction Machinery has developed a solution for the safer coexistence of people and construction machinery in the form of an operator assistance system that can notify the operator when it detects other workers in the vicinity of the machine and also warn workers using detectors and alarms that can be retrofitted on existing machinery.
The main features are as follows.
In the future, the company intends to accelerate development toward practical deployment by looking at the addition of a collision mitigation function that enables the system to depower the machine’s engine, and an event data recorder that records images around the machine along with operational information.
(Hitachi Construction Machinery Co., Ltd.)
[4] Operator Assistance system using RFID tags
Compaction equipment is used for compaction in a variety of different applications, with pneumatic tired rollers used for the compaction of soil in embankment and other forms of earthmoving as well as the compaction of road beds and asphalt. The labor shortage in the civil engineering and construction industry has worsened over recent years. This labor shortage, together with a high incidence of disasters, has raised the importance of improving productivity and safety. Under these circumstances, the Ministry of Land, Infrastructure, Transport and Tourism has been promoting the greater use of information and communication technology (ICT) in construction and, although its “Embankment Compaction Utilizing TS/GNSS Management Guidelines” have become widely adopted, there is still a need for automation technologies to further improve productivity and safety.
Accordingly, Hitachi Construction Machinery has developed a prototype pneumatic tired roller with an autonomous driving system that is equipped with additional sensors, controllers, etc. that enable it to perform compaction work over a predefined area without a human operator. The prototype was exhibited at the 2019 Construction & Survey Productivity Improvement Expo. A collision damage reduction system that uses some of this technology is now on the market and the company intends to continue working toward its practical deployment.
(Hitachi Construction Machinery Co., Ltd.)
Loader Charge Air Cooler [5] Autonomous Driving System for Compaction Equipment