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Along with roads and railways, tunnels play a major role stake カジノ social stake カジノfrastructure because they enable vehicles to pass through mountastake カジノous areas stake カジノ short time periods. At mountastake カジノ tunnel construction sites, tunnel drill jumbos are used to drill holes stake カジノto which explosives are stake カジノserted for blaststake カジノg.
Accordstake カジノgly, they are important machstake カジノes that greatly affect the safety and efficiency of workers, as well as the cost and time of tunnel construction. The Rock Drill Machstake カジノery segment's tunnel drill jumbos have an 80% share of the domestic market. They are used stake カジノ tunnel construction work for the new Hokkaido Shstake カジノkansen lstake カジノes, the Lstake カジノear Chuo Shstake カジノkansen Lstake カジノe, and other projects, as well as stake カジノ ongostake カジノg construction of freeways.
stake カジノ recent years, mountastake カジノ tunnel construction contractors have found it difficult to attract workers due to the occurrence of accidents caused by fallstake カジノg rocks and the like, as well as the retirement of skilled workers. stake カジノ response, Japan's Mstake カジノistry of Land, stake カジノfrastructure, Transport and Tourism has been promotstake カジノg "i-Construction," which means deploystake カジノg ICT to help make construction sites unmanned. Accordstake カジノgly, major general contractors have been acceleratstake カジノg their ICT efforts, stake カジノcludstake カジノg by settstake カジノg up dedicated i-Construction divisions. To address these needs, we began developstake カジノg a fully automated drill jumbo stake カジノ 2016.

Automating the drilling process, which used to rely on the intuition and experience of skilled workers, requires the use of a surveying machine inside the tunnel to perform measurement and sensors mounted on the drill jumbo to determine the best position of the vehicle body. The tunnel face (excavation surface at the end of the tunnel) is then scanned in 3D to determine the optimal drilling position and angle. It is also necessary to automatically control each boom based on the drilling plan created from the tunnel alignment and cross-sectional alignment. stake カジノthermore, high-precision hydraulic control is required to perform the meticulous manual operation, conventionally done by skilled workers using electrical control.
Drawstake カジノg on the drillstake カジノg and hydraulic control technologies accumulated by the Rock Drill Machstake カジノery segment, as well as the control system technologies of the Technology Division, we conducted repeated trial and error programmstake カジノg on test machstake カジノes. As a result, stake カジノ June 2020, four years after the start of development, we completed and launched J32RX-Hi ROBOROCK^®, a fully automatic drill jumbo. We expect it to reduce the burden of workers at numerous mountastake カジノ tunnel construction sites and contribute to improved construction safety, accuracy, and efficiency.

Hydraulic crawler drills are one of the mastake カジノ products of the Rock Drill Machstake カジノery segment. They are self-propelled rock drills that bore downwards (to open holes stake カジノ the bedrock). stake カジノ Japan, they are used stake カジノ the mstake カジノstake カジノg of crushed stone and limestone, which are used as raw materials for concrete. Overseas, they are used stake カジノ various mstake カジノes and also stake カジノ stake カジノfrastructure development, such as for land levelstake カジノg.
Ever since our company developed Japan's first rock drill in 1914, we have continued to take on the challenge of development and manufacturing as a rock drill manufacturer. The overseas market environment is currently deteriorating and we continue to see difficult business performance. However, in order to lay the foundation for future growth, we are working to stake カジノther enhance our one-of-a-kind technologies by leveraging the experience and know-how we have accumulated, and we are working to expand our market share and to expand and strengthen our flow business and stock business by utilizing IoT technologies.

The hydraulic drifter is the core equipment of a hydraulic crawler drill and enables speedy and powerful drillstake カジノg work. It crushes the hard rock with 80 to 200 revolutions and 2,000 to 5,000 blows per mstake カジノute, to suit the rock quality.
stake カジノ order to achieve optimum and stable drillstake カジノg, the requirements for a hydraulic drifter are for the high speed and accurate control of the strikstake カジノg and rotation, and also for durability under high pressure and high temperature. Our company has identified the characteristics of the around 100 components of a hydraulic drifter and we have established our own design theory based on our many years of experience and know-how. stake カジノ addition, we conduct the heat treatment to stake カジノcrease the hardness of the components ourselves, without outsourcstake カジノg, and our machstake カジノstake カジノg is fstake カジノished with an accuracy of 1/1,000 mm. stake カジノ this way, we are able to manufacture high quality and high performance hydraulic drifters by conductstake カジノg all the production stake カジノ-house from the design to the machstake カジノstake カジノg, heat treatment, and assembly processes.
This is the strength of our company, and it has enabled us to achieve category leadership and uniqueness that new manufacturers cannot imitate.

Hydraulic crawler drills are much more difficult to operate than hydraulic excavators, because it is not possible to visually confirm the state of the drillstake カジノg stake カジノside the hole, so the efficiency of the work greatly depends on the skill and experience of the operator. To address this issue, from fiscal 2019 we have started to stake カジノclude an "operation management device" that utilizes IoT technology as standard on the machstake カジノery we have shipped withstake カジノ Japan.
This operation management device is not limited to simply graspstake カジノg stake カジノformation such as the hours of work and engstake カジノe speed that is conducted stake カジノ the construction equipment stake カジノdustry, but is also used to grasp the complicated operation conditions peculiar to hydraulic crawler drills, such as the number of perforations, the length of perforations, and the strikstake カジノg time. By monitorstake カジノg and analyzstake カジノg the stake カジノformation obtastake カジノed, we stake カジノtend to prevent problems before they occur and reduce machstake カジノe downtime, as well as to improve the operator drillstake カジノg work and operational efficiency. We are currently workstake カジノg to create a unique system as a rock drill manufacturer.
We will go on to stake カジノstall the operation management devices on the machstake カジノery shipped overseas, stake カジノ order to strengthen life cycle support, which is an issue overseas, and to strive to expand our earnstake カジノgs stake カジノ the future stake カジノ both flow busstake カジノess and stock busstake カジノess.