Abstract: There is provided a vehicle which can stably load or unload a long heavy load and lower a height of a working space necessary for loading or unloading the weight body. The loading/unloading apparatus suspends and maintains a load in a working beam installed between a pair of booms and rotates the pair of booms toward the left or right direction of a vehicle body, such that the load is unloaded from the vehicle body in a construction field or loaded from the construction field onto the vehicle body. Thus, the height of the working space necessary when the load is loaded or unloaded can be reduced as compared with a crane structure for loading and unloading the load by the fluctuation of a boom.

Abstract: Provided is a rolling stock including: an upper reinforcement beam provided in a railroad-tie direction in a joint portion between an upper end portion of a cab end structure and an upper end portion of a side structure; and a post member coupling the upper reinforcement beam and an end beam of an underframe, in which the post member includes: a lower post portion having a lower end joined to the end beam; an upper post portion having a rear end joined to the upper reinforcement beam; and a window opening post portion provided between the lower post portion and the upper post portion in conformity with an inclination of a front window provided in a cab end structure, the window opening post portion is formed to have a smaller width dimension in a rail direction than a width dimension of the lower post portion in the rail direction.

Abstract: A rolling stock in which a streamlined cab end structure includes: a pair of corner posts having lower half portions joined respectively to a pair of corner post reinforcement member standing upright on opposite end portions of an end beam of the underframe and upper half portions inclined toward the rear of the car body; an upper reinforcement beam laid between upper end portions of the pair of corner posts; a pair of end posts having lower half portions joined respectively to a pair of end post reinforcement members, and upper half portions inclined toward the rear of the car body; and a pair of coupling member respectively coupling upper portions of the pair of end posts and a front end portion of the roof structure, and the upper reinforcement beam has such a strength that the car body can be lifted up from above by use of a crane.

Abstract: A rolling stock includes: a pair of left and right post members provided upright on inner sides of left and right end portions of an end beam of an underframe, the end beam joined to a lower portion of a cab end structure; a recess portion open frontward, the recess portion formed in a front portion of the end beam between the pair of post members; and an impact absorbing member disposed between a bottom face of the recess portion and an inner face of the outside plate. The recess portion has such a size that the impact absorbing member is accommodated within the recess portion after being compressively deformed. Since the impact absorbing member is disposed on an inner side of the outside plate, the impact absorbing member is not exposed to the outside of the car body, and thus does not impair the design of the car body.

Abstract: Provided is rolling stock in which a center beam is formed of an upper plate part, a lower plate part, and a pair of side plate parts located on opposite sides of the upper plate part and the lower plate part into a rectangular tube cross-sectional shape. Each of the upper plate part and the lower plate part is formed by placing a plurality of plate members on each other, at least an outermost one of the plate members is formed in a flat plate shape, and a ridge portion projecting to a tube inner side is formed in a center portion, in the width direction, of the plate member located on an inner side such that the ridge portion is continuous in a longitudinal direction of the center beam, and which has an underframe capable of preventing the upper plate part and the lower plate part from buckling.

Abstract: A carriage-body inclination device (30) has individual inclination units (112, 113) that are provided corresponding to air springs (22, 23), and a control unit (110). The individual inclination unit (112) can sufficiently execute supply or release of air to or from the air spring (22) by driving a control valve (40) and a large-capacity valve (170) using a height difference value which is a difference between a height instruction value provided by the control unit (110) and a height value obtained from a link-lever mechanism (24). The control valve (40) has a two-layer structure of a fixed sleeve (91), a control sleeve (90), and a spool (80). The control sleeve (90) is moved and driven by the link-lever mechanism (24) and a rotation-translation conversion mechanism (44). The spool (80) is moved and driven by a spool actuator (120) according to a set height value.

Abstract: This sensor state determination system is a sensor state monitoring system capable of accurately determining whether or not a detecting sensor used with a railroad vehicle is in an abnormal state. This system includes: a detecting sensor capable of detecting a physical value acting upon the railroad vehicle; and an electronic control device. A monitoring sensor equivalent to the detection sensor is installed at a position equivalent to the position of the detection sensor. The electronic control device is provided with a determination means (coherence calculation section, state determination section) that computes, based on a first signal detected by the detecting sensor and a second signal detected by the monitoring sensor, a coherence value indicating a correlation between the signals. The electronic control device determines that the detecting sensor is in an abnormal state if the coherence value is smaller than a preset abnormality determination value.

Abstract: A friction stir welding apparatus includes a rotating tool provided with an upper rotating body arranged to be axially adjustable in position by an upper actuator, a lower rotating body integral with a rotating main rod extending through the upper rotating body and arranged to be axially adjustable in position by a lower actuator, and a stirring part formed in the rod. The upper rotating body and the lower rotating body clamp therebetween a joint of members to be joined placed with their end faces butting each other. The stirring part is rotated to stir the joint by frictional heat to join them. The rotating tool includes a slide plate attached, through a thrust bearing, to one or both of end portions of the upper rotating body and the lower rotating body facing each other to provide good finished surfaces of the joint.

Abstract: Disclosed is a truck lateral motion restricting device which can prevent a large impact from being applied to a stopper when the truck lateral motion restricting device is operated in the derailment. The device comprises a guard angle (52) which is provided along the inside of the rail (51) and a stopper (25) which projects downward from a more inward position than wheels (15) of the truck (11) and is in slidable contact with the inside surface (52a) of the guard angle, wherein the stopper comprises a slidable contact portion (28), which has a slidable contact surface slidable contact with the inside surface of the guard angle, and guide portions (31) which project at front and rear portions of the slidable contact portion and have a front end inclined in a direction separating from the inside surface of the guard angle and a base having a guide slope (31a) provided continuously to the slidable contact surface.

Abstract: In a bogie frame, a lateral beam disposed in the left-right direction which is the direction in which the rail ties extend is joined to left and right side beams arranged so as to extend in the front-rear direction which is the direction in which the rails extend. The lateral beam has a flat shape having a width in the front-rear direction greater than the thickness thereof in the top-bottom direction, and the lateral beam is provided with left and right joining sections joined to the side beams, and also with an intermediate section sandwiched between the left and right joining sections. The width of the intermediate section in the front-rear direction is greater than the width of the joining sections in the front-rear direction. A through-hole is formed in the intermediate section.

Abstract: Provided is a railway vehicle having a configuration which can sufficiently protect the cabin even when large external force is applied to the end structures thereof. The vehicle body of the railway vehicle is formed by joining an underframe 20, side structures 30, end structures 50, and a roof structure 60 together. An upper reinforcement beam 56 in the railroad tie direction is disposed at the upper portion of the end structure. A plurality of post reinforcement members are disposed in the vertical direction so as to stand on an end beam 26 of the underframe. The post reinforcement members and the upper reinforcement beam are respectively connected by an end post in the vertical direction disposed at an intermediate portion in the end structure width direction and corner posts 54 in the vertical direction disposed at both end portions in the end structure width direction.

Abstract: Provided is a railway vehicle having a configuration which can sufficiently protect the cabin even when large external force is applied to the side structures and the end structures thereof. The vehicle body of the railway vehicle is formed by joining an underframe 20, side structures 30, end structures 50, and a roof structure 60 together. The lower inner face of the side post 31 of the side structure is joined to the outer face portion of a side beam 21 of the underframe. The lower inner faces of the post reinforcement members (an end post reinforcement member 57 and a corner post reinforcement member 58) for reinforcing the post members (an end post 53 and a corner post 54) of the end structure are joined to the outer face portion of an end beam 26 of the underframe.

Abstract: Travel devices for a transport vehicle are arranged in a longitudinal direction and a width direction of a loading platform to allow traveling of the loading platform. In this travel device, an arm includes an upper end turnably supported at a lower portion of the loading platform. The arm includes a lower end where an axle box is supported swingably in up and down directions. A wheel has a mid-plane that intersects with a swing plane of an axle shaft disposed at the axle box, and is supported at the axle shaft. Accordingly, this ensures a small vehicle width L2 of the transport vehicle.

Abstract: A vehicle body tilting device for railway vehicle is arranged to control the tilt of a vehicle body by exchanging compressed air between a pair of left and right air springs. This device includes: a control valve for tilt operation, connected between the air springs; a pump for tilt operation, connected between the air springs through the control valve; and a control device for controlling both the control valve and the pump. The control valve forms a circulation flow path for allowing compressed air, delivered by the pump, to circulate therethrough. Before controlling the tilt of the vehicle body, the control device drives in advance the pump to circulate the compressed air through the circulation flow path to provide a delivery standby state, changes over at predetermined timing the position of the control valve, and delivers the compressed air from one of the air springs to the other.

Abstract: A carriage-body inclination device (30) has individual inclination units (112, 113) that are provided corresponding to air springs (22, 23), and a control unit (110). The individual inclination unit (112) can sufficiently execute supply or release of air to or from the air spring (22) by driving a control valve (40) and a large-capacity valve (170) using a height difference value which is a difference between a height instruction value provided by the control unit (110) and a height value obtained from a link-lever mechanism (24). The control valve (40) has a two-layer structure of a fixed sleeve (91), a control sleeve (90), and a spool (80). The control sleeve (90) is moved and driven by the link-lever mechanism (24) and a rotation-translation conversion mechanism (44). The spool (80) is moved and driven by a spool actuator (120) according to a set height value.

Abstract: The present invention provides a pile driver capable of improving operability while preventing breakage and the like of a wire rope by relating a press-in winch and an elevation winch to each other. Solenoid valves are arranged respectively to hydraulic circuits of both of a press-in winch and an elevation winch and an electric circuit is provided to operate the solenoid valves in a related manner so that one winch is to be capable of rotating at semi-engaging when the other winch is set to be in a winding state with automatic brake operated.

Abstract: When the load factor of a loading/unloading apparatus reaches a second reference value that is smaller in load factor than the first reference value, the operation speed of the loading/unloading apparatus becomes a reduction state. It is possible to make load vibration difficult to be generated in a load. Further, fine adjustment of the manipulation becomes easy, such that it is possible to prevent the load factor from reaching the first reference value due to careless manipulation of the operator. Even if the load factor reaches the first reference value, the operation speed of the loading/unloading apparatus has been reduced, such that it is possible to prevent load vibration of the load W when stopping.

Abstract: A railway vehicle body tilting system has a height control valve for supplying and discharging compressed air to and from an air spring by an actuator, an auxiliary control valve for supplying compressed air to the air spring and thereby causing a car body to tilt, a backup valve for switching the connection between the air spring and either the height control valve or the auxiliary control valve, and a controller installed in each of vehicles linked together as a train. During normal operation, the controller provided in each of the cars controls the height control valve of the respective car and monitors for faulty operation in other linked controllers. If a fault arises in a linked controller, control over the malfunctioning controller is terminated, and another normal controller controls a backup valve in the car with the malfunctioning control device.