Abstract: A construction machine that does not assume manned field operation is described. A construction machine includes a main body that travels by a traveling device, a working device connected to the main body, a take-off and landing portion provided on the main body, and a plurality of unmanned flying objects that take off and land at the take-off and landing portion.

Abstract: A construction machine that can reduce emission of greenhouse gas is described. The construction machine includes a main body that is revolvable by revolving of a revolving part, a working device connected to one side of the main body, a hydrogen tank inside another side of the main body that stores hydrogen, and a fuel cell provided inside the main body to which the hydrogen from the hydrogen tank is supplied.

Abstract: A pile driving apparatus is described that is capable of simultaneously pile driving a plurality of piles. The pile driving apparatus includes a main body that travels by a traveling device, a first pile driver that is connected to the main body and performs pile driving along a vertical direction, and a second pile driver that is connected to the main body and performs pile driving along the vertical direction.

Abstract: A disinfection system includes, to enable prevention of infection of infectious diseases, a first sensing device that senses entry of a person into a first room and a disinfection device including at least one of a first irradiation device that emits invisible light to a disinfection area or a first fluid supply device that supplies a fluid to the disinfection area. A first control device of the disinfection system operates at least one of the first irradiation device 3 or the first fluid supply device 5 when the first sensing device 2 has sensed the entry of a person into the first room 1.

Abstract: A construction machine system that can shorten a work period is described. A construction machine system includes a main body that is revolvable by revolving of a revolving device, a first working device including a plurality of actuators and connected to the main body, and a second working device including a plurality of actuators and connected to the main body.

Abstract: A disinfection device, a vehicle, and a construction machine capable of preventing infection of infectious diseases are described. The disinfection device includes a fluid supply device that supplies a fluid to a disinfection area and an irradiation device that irradiates the disinfection area with invisible light.

Abstract: A scraper vehicle is described that can contribute, with a relatively simple and low-cost configuration, to shortening of a construction period, reduction of construction cost, and the like without travel being disabled easily. The scraper vehicle includes an auxiliary drive system that supplies, in excavation by the scraper, a driving force to at least part of traveling wheels of the scraper vehicle. The driving force is supplied constantly or in accordance with a travel resistance of the scraper vehicle.

Abstract: A scraper vehicle is described that can contribute, with a relatively simple and low-cost configuration, to shortening of a construction period, reduction of construction cost, and the like without travel being disabled easily. The scraper vehicle includes an auxiliary drive system that supplies, in excavation by the scraper, a driving force to at least part of traveling wheels of the scraper vehicle. The driving force is supplied constantly or in accordance with a travel resistance of the scraper vehicle.

Abstract: A method for producing spheroidal graphite cast iron having a specific final composition includes: subjecting a molten iron to a spheroidization treatment using a spheroidizing agent of an Fe—Si—Mg—Ca-based alloy containing no rare earth element; conducting an inoculation treatment using a first Fe—Si-based inoculant; and conducting a pouring inoculation treatment with a given amount of a second Fe—Si-based inoculant containing 45-75% of Si, 1-3% of Ca, and 15 ppm or less of Ba.

Abstract: A process for producing spheroidal graphite cast iron includes a spheroidization treatment, an inoculant treatment and a pouring inoculation treatment. A molten iron is subjected to the spheroidization treatment using a spheroidizing agent of an Fe—Si—Mg—Ca-based alloy which contains a given amount of Ba and contains substantially no rare-earth element.

Abstract: A process for producing spheroidal graphite cast iron includes a spheroidization treatment, an inoculant treatment and a pouring inoculation treatment. A molten iron is subjected to the spheroidization treatment using a spheroidizing agent of an Fe—Si—Mg—Ca-based alloy which contains a given amount of Ba and contains substantially no rare-earth element.

Abstract: A method for producing spheroidal graphite cast iron having a specific final composition includes: subjecting a molten iron to a spheroidization treatment using a spheroidizing agent of an Fe—Si—Mg—Ca-based alloy containing no rare earth element; conducting an inoculation treatment using a first Fe—Si-based inoculant; and conducting a pouring inoculation treatment with a given amount of a second Fe—Si-based inoculant containing 45-75% of Si, 1-3% of Ca, and 15 ppm or less of Ba.

Abstract: A friction material having a filler that includes titanium dioxide particles having a diameter that is less than about fifteen micrometers. The friction material has a relatively uniform coefficient of friction and causes relatively less wear of braking components.