Abstract: A superconducting cable (1) includes a superconducting cable core (2) and a corrugated pipe (21) storing the superconducting cable core (2). The superconducting cable core (2) has a corrugated pipe (11), a superconductor (12) provided on the outer peripheral side of the corrugated pipe (11), and a heat insulating pipe (23) stored in the corrugated pipe (11) and having a smooth inner peripheral surface. A coolant flows through a flow passage (FP1) formed in the heat insulating pipe (23) and then flows through a flow passage (FP2) formed between an outer peripheral surface of the corrugated pipe (11) and an inner peripheral surface of the corrugated pipe (21).

Abstract: A superconducting coil device (10) includes: a coil case (20) housing a superconducting coil (30); a superconducting coil (30) housed in the coil case (20); and a resin part (50) formed of a polymer (51) filled in a gap between an inner wall of the coil case (20) and the superconducting coil (30). The resin part (50) is formed of a polymer (51) obtained by polymerizing a polymerizable composition containing a first monomer having a norbornene ring structure.

Abstract: A railway direct-current system according to the present invention is provided with: a feeding line that is connected to a plurality of electric power substations arranged along a railway; and a trolley line that is connected to the feeding line via feeding branch lines at an arbitrarily defined interval, wherein a superconductive feeding cable is connected to somewhere midway in each of railroad lines extending from the substations to the trolley line via the feeding lines, so as to be parallel with the railroad line.

Abstract: A superconducting cable (1) includes a superconducting cable core (2) and a corrugated pipe (21) storing the superconducting cable core (2). The superconducting cable core (2) has a corrugated pipe (11), a superconductor (12) provided on the outer peripheral side of the corrugated pipe (11), and a heat insulating pipe (23) stored in the corrugated pipe (11) and having a smooth inner peripheral surface. A coolant flows through a flow passage (FP1) formed in the heat insulating pipe (23) and then flows through a flow passage (FP2) formed between an outer peripheral surface of the corrugated pipe (11) and an inner peripheral surface of the corrugated pipe (21).

Abstract: A superconducting coil device (10) includes: a coil case (20) housing a superconducting coil (30); a superconducting coil (30) housed in the coil case (20); and a resin part (50) formed of a polymer (51) filled in a gap between an inner wall of the coil case (20) and the superconducting coil (30). The resin part (50) is formed of a polymer (51) obtained by polymerizing a polymerizable composition containing a first monomer having a norbornene ring structure.

Abstract: A brake disc of the present invention is a brake disc that stops the rotation of an axle when a brake pad is pressed on a surface of the brake disc, including a disc main body that is attached to a rotary body integrally rotating with the axle; and a plurality of build-up layers laminated on a surface of the disc main body, in which the build-up layers are laminated on the surface of the disc main body by means of laser metal deposition welding.

Abstract: An on-board device controls the speed of the control target train so that the control target train is set to a given speed-controlled state upon reception of an earthquake detection signal, the given speed-controlled state being a state in which the speed of the control target train is set to be equal to or lower than a reduced speed, or the control target train is stopped. A speed control part estimates an estimated position and an estimated timing at which the control target train is set to a speed-controlled state when a given brake is continuously applied, and controls the speed of the control target train based on the positional relationship between the estimated position and a recommended avoiding-train-existence section when there is a time allowance between the estimated timing and the estimated earthquake arrival timing.

Abstract: A magnetic fluid sealing structure (1) for high-speed rotation for sealing a gap (S) between a shaft member (2) and a housing member (3) disposed around the shaft member (2), which are rotatable, includes: magnetic force generating means (4) which is fixed to the housing member (3) and generates a magnetic force; magnetic pole members (5) disposed on both sides in an axial direction of the magnetic force generating means (4); and a magnetic fluid (7) which is magnetically held between the magnetic pole members (5) and the shaft member (2) by the magnetic force of the magnetic force generating means (4) and seals the gap (S) therebetween, in which the shaft member (2) has a plurality of different material layers concentrically laminated in a radial direction, and an outermost diameter layer (23) of the shaft member (2), which holds the magnetic fluid (7), is made of a magnetic material.

Abstract: A superconducting cable comprises a superconductor 60, two or more coolant passages including an outgoing coolant passage 12 and a returning coolant passage 14 that transfer a coolant that cools the superconductor, and a heat insulating pipe 10 inside which the superconductor 60 and the coolant passages are formed. For the coolant passages, by a double structured tube of an inner tube 6 and an outer tube 8, the outgoing coolant passage 12 is formed in the internal space of the inner tube 6 and the returning coolant passage 14 is formed in the space between the inner tube 6 and the outer tube 8, the inner tube 6 is formed between the outgoing coolant passage 12 and the returning coolant passage 14 of a heat insulating material, the superconductor 60 is disposed on the outer circumferential side of the inner tube 6, and the superconductor is cooled by the coolant that flows through the returning coolant passage.

Abstract: A magnetic fluid sealing structure (1) for high-speed rotation for sealing a gap (S) between a shaft member (2) and a housing member (3) disposed around the shaft member (2), which are rotatable, includes: magnetic force generating means (4) which is fixed to the housing member (3) and generates a magnetic force; magnetic pole members (5) disposed on both sides in an axial direction of the magnetic force generating means (4); and a magnetic fluid (7) which is magnetically held between the magnetic pole members (5) and the shaft member (2) by the magnetic force of the magnetic force generating means (4) and seals the gap (S) therebetween, in which the shaft member (2) has a plurality of different material layers concentrically laminated in a radial direction, and an outermost diameter layer (23) of the shaft member (2), which holds the magnetic fluid (7), is made of a magnetic material.

Abstract: There is provided a high-temperature superconducting (HTS) coil and a method of manufacturing the same, allowing simple and excellent affixation between side panels for cooling the superconducting coil and the HTS coil while inhibiting delamination of an HTS wire. The method of manufacturing the HTS coil including the rare-earth-based HTS wire of the superconducting coil and side panels for cooling the superconducting coil which are affixed thereto, windings of the rare-earth-based HTS wire of the superconducting coil being separated between turns, includes: utilizing a tape-like polytetrafluoroethylene (PTFE) film 3 as an insulator between the windings of the rare-earth-based HTS wire 2 to form a PTFE-film co-wound superconducting coil; impregnating the PTFE-film co-wound superconducting coil 4 with epoxy resin 6; and affixing the side panels 5 to the PTFE film co-wound superconducting coil 4.

Abstract: A brake disc of the present invention is a brake disc that stops the rotation of an axle when a brake pad is pressed on a surface of the brake disc, including a disc main body that is attached to a rotary body integrally rotating with the axle; and a plurality of build-up layers laminated on a surface of the disc main body, in which the build-up layers are laminated on the surface of the disc main body by means of laser metal deposition welding.

Abstract: A disc brake for railway vehicles includes a brake disc fixed to a wheel or an axle of a railway vehicle and a brake lining configured to be pressed against a frictional surface of the brake disc by a brake caliper. The brake lining includes a plurality of friction members arranged to be spaced from each other, each of the friction members having a surface that faces the frictional surface of the brake disc, a metallic backing secured to back surfaces of the friction members, and a base plate supporting the friction members on the back surface side via spring members. The base plate is mounted to a brake caliper; wherein the friction members are provided in pairs with each pair being formed by two adjacent ones of the friction members, and the metallic backing is a one-piece member provided for each pair of the friction members.

Abstract: A brake caliper (10) includes a first caliper arm (12) that opposes a first frictional surface (6a) of a vehicle wheel (5) and a second caliper arm (14) that opposes a second frictional surface (6b) of the same. A movable brake pad (7) is supported by the first caliper arm (12) and applies a braking force to the first frictional surface (6a). A plurality of pistons (55) which drive the movable brake pad (7) in accordance with expansion of a diaphragm (75) provided in the brake caliper (10), and a guide member (65) that guides displacement of the plurality of pistons (55) in a right-angle direction relative to the first frictional surface (6a) are provided, and therefore the movable brake pad (7) applies an even braking force to the vehicle wheel (5) in cooperation with a fixed brake pad (700) fixed to the second caliper arm (14).

Abstract: A superconducting cable comprises a superconductor 60, two or more coolant passages including an outgoing coolant passage 12 and a returning coolant passage 14 that transfer a coolant that cools the superconductor, and a heat insulating pipe 10 inside which the superconductor 60 and the coolant passages are formed. For the coolant passages, by a double structured tube of an inner tube 6 and an outer tube 8, the outgoing coolant passage 12 is formed in the internal space of the inner tube 6 and the returning coolant passage 14 is formed in the space between the inner tube 6 and the outer tube 8, the inner tube 6 is formed between the outgoing coolant passage 12 and the returning coolant passage 14 of a heat insulating material, the superconductor 60 is disposed on the outer circumferential side of the inner tube 6, and the superconductor is cooled by the coolant that flows through the returning coolant passage.

Abstract: The present invention is configured such that, in a low AC loss oxide superconductor constituted by providing an oxide superconducting layer 6 on a substrate 1, said oxide superconducting layer 6 is separated into a plurality of filament conductors 2 in parallel to the lengthwise direction of said substrate 1 by dividing grooves 3 plurally formed in the widthwise direction of said substrate, and a high-resistance oxide 8 is formed in said dividing grooves 3. Because of the invention, it is possible to increase the insulation properties of individually divided mated filament conductors, and to obtain an oxide superconductor that has low AC loss.

Abstract: In a vehicle caliper brake device, a brake pad supported by a holder applies a frictional force to a braking surface as a diaphragm actuator is driven. The holder is supported by a caliper main body to be capable of displacing in a displacement direction of the brake pad. The diaphragm actuator includes a piston that is driven by a diaphragm to push the holder. The piston is fixed to the holder using a plurality of screws, and therefore the piston applies a pressing force to the brake pad uniformly without the need for guidance by a guide.

Abstract: A disc brake for railway vehicles includes a brake disc fixed to a wheel or an axle of a railway vehicle and a brake lining configured to be pressed against a frictional surface of the brake disc by a brake caliper. The brake lining includes a plurality of friction members arranged to be spaced from each other, each of the friction members having a surface that faces the frictional surface of the brake disc, a metallic backing secured to back surfaces of the friction members, and a base plate supporting the friction members on the back surface side via spring members. The base plate is mounted to a brake caliper; wherein the friction members are provided in pairs with each pair being formed by two adjacent ones of the friction members, and the metallic backing is a one-piece member provided for each pair of the friction members.

Abstract: There is established a superconducting magnet made of a high-temperature bulk superconductor and capable of trapping a high magnetic field with ease and stably. The superconducting magnet made of the high-temperature bulk superconductor, for use by trapping a magnetic field, is made of the bulk superconductor with an artificial hole therein, a low-melting metal impregnated into, and filling up at least the artificial hole, and a heat-conducting metal material embedded in portions of the high-temperature bulk superconductor, impregnated with, and filled with the low-melting metal. The superconducting magnet can be produced by a process involving the steps of providing the artificial hole in the high-temperature bulk superconductor, disposing the heat-conducting metal material in at least the artificial hole, applying a process of impregnating and filling up at least the artificial hole with the low-melting metal, and subsequently, executing a process of magnetizing.

Abstract: A persistent-mode magnet, assembled from superconducting annuli, provides a micro coil NMR, in which compactness and manufacturability are provided for a variety of applications. An annular magnet for micro NMR can include a YBCO-annulus Helmholtz coil, for example, that can energized by a magnet system and then transported for use at a second location with an operating system.