Abstract: The railway car comprises a subframe 40 disposed below a floor of the car body with a clearance therebetween, and a bogie 30 disposed below the subframe 40 with a clearance therebetween, wherein car body 10 and subframe 40 are connected via a first center pin 50 protruding downward from car body 10 or via a first center pin 50 protruding upward from subframe 40 toward car body 10, and subframe 40 and bogie 30 are connected via a second center pin 70 protruding downward from the subframe 40. A two-step bumper 61 is disposed between the first center pin 50 and the corresponding adjacent member, and two-step bumper 61 is disposed on both sides of center pin 50 in the width direction of car body 10. Car body 10 swings in the width direction when the bogie passes a point. After passing the point, car body 10 returns to its original position by the force of two-step bumper 61.

Abstract: The railway car comprises a subframe 40 disposed below a floor of the car body with a clearance therebetween, and a bogie 30 disposed below the subframe 40 with a clearance therebetween, wherein car body 10 and subframe 40 are connected via a first center pin 50 protruding downward from car body 10 or via a first center pin 50 protruding upward from subframe 40 toward car body 10, and subframe 40 and bogie 30 are connected via a second center pin 70 protruding downward from the subframe 40. A two-step bumper 61 is disposed between the first center pin 50 and the corresponding adjacent member, and two-step bumper 61 is disposed on both sides of center pin 50 in the width direction of car body 10. Car body 10 swings in the width direction when the bogie passes a point. After passing the point, car body 10 returns to its original position by the force of two-step bumper 61.

Abstract: The invention provides a railway car body that causes less noise and that can be manufactured easily. The railway car comprises a subframe 40 disposed below a floor of the car body with a clearance therebetween, and a bogie 30 disposed below the subframe 40 with a clearance therebetween, wherein car body 10 and subframe 40 are connected via a center pin 50 protruding downward from car body 10, and subframe 40 and bogie 30 are connected via a second center pin 70 protruding upward from the bogie. The lower end of the second center pin 70 is connected to the bogie 30 via a coupling link 110.

Abstract: On an outer periphery of a link 30 for connecting a member car body 20 and a bogie car frame 11, vessel is provided and 42 into which particle shaped members 41 are inserted. A rotation vibration generated from a drive system of a running electric motor 14, a transmission apparatus and a shaft coupling is transmitted to the link 30. The vibration energy generated at link 30 is converted to the kinetic energy in response to the collision of the particle-shaped members 41 contained in the vessel 42 so that the vibration at the link 30 is reduced. Accordingly, the propagation of the vibration to a car body can be restrained. The particle-shaped members 41 can be inserted into a cylindrical portion 31 of the link 30. Further, the particle-shaped members 41 can be inserted movably into a column 32. In a railway vehicle having a bogie car, the vibration caused by the unbalance of the drive system can be restrained and the noise in a car accompanied with the vibration can be reduced.

Abstract: A car body 8 is supported on a bogie frame 4 through an air spring 5. Along to a width direction of the car body 8, to the bogie frame 4 a torsion bar 11 is provided. At both ends of the torsion bar 11, links 15 and 15 for inclining to direct for an inner side of the car body 8 through levers 13 and 13 are provided. Accordingly, a rolling displacement of the both ends of the car body is restricted and an upper and lower displacement in the same phase is not restricted. According to an occurrence of an excess centrifugal acceleration which acts on the car body 8, a car body inclination according to a link mechanism can be operated. For this reason, a light weight structure and a low cost structure can be attained. An inclination device having a light weight structure, a left and right riding good feeling in the passenger in a car, and a high fail-safe characteristic can be obtained.

Abstract: A traction link of a bogie frame is connected to a connection member which extends down from a car body. In an interior portion of the connection member, a large number of particle-shaped members are accommodated. The rotation vibrations which are generated from a system drive of a running electric motor, a reduction gear unit and a shaft coupling are transmitted to the connection member and the car body through the traction link. The vibration energy generated in the connection member is converted to kinetic energy in the particle-shaped members by collisions between the particle-shaped members inside the connection member and, so that the vibrations in the connection member can be reduced. Accordingly, the propagation of the vibrations to the car body can be restrained. In a railway vehicle bogie car, the vibrations which are generated by an unbalance of the drive system can be restrained, and the noise inside the car produced by the vibrations can be reduced.

Abstract: A low noise current collector 20 having excellent controllability and response, and a high speed railway train using such current collectors. The current collector 20 includes an aerodynamically shaped current collector head 22, a driving cylinder 32 to move the current collecting head, a supporting insulator 30, and a cable head 50 supporting a conductor 53 for conducting current from current collecting head 22 to a load. The current collector 20 is controlled by a cylinder 7 for raising and lowering so that the current collector may be contained in a dome 4 when it is in use. A multi-car train has four current collectors, two toward each end, and each current collector has its front side directed toward the center of the train. The two current collectors at the rear of the train are utilized, while the two at the front are contained within their domes 4. Therefore, the train can run in either direction, utilizing the appropriate pair of current collectors.

Abstract: A current collector for a railway trolley vehicle includes a current collecting member having a contact strip, a driving system for moving the current collecting member into and out of contact with a trolley wire, a load cell for detecting force acting between the current collecting member and the driving system, a displacement meter for detecting displacement of the driving system, first and second estimating circuits, and a control circuit. The first estimating circuit provides an estimated value of the contact force between the current collector and the trolley wire by estimating values of first parameters of the contact strip, the current collecting member, and the trolley wire and summing products of each of these values and a corresponding weighting factor.

Abstract: The invention relates to a current collector for an electrically powered vehicle. The collector includes a current collecting member which collects current from a current supplying body and conducts the current to a load in the vehicle. The current collecting member is coupled to a driving system through a first insulating element. The driving system moves the current collecting member to the current supplying body. A sensor for controlling the driving system is positioned between the driving system and the insulating element.

Abstract: A wheelset steering apparatus and method for the truck of railway vehicles, wherein an axle box rotatably provided on the opposite ends of the wheelset is elastically supported in the longitudinal direction as well as in the lateral direction of the truck with respect to a truck frame. Vertical loadings on the truck frame are carried by the axle box. A spring constant in the longitudinal direction of the truck in a state of being elastically supported with respect to the truck frame of the axle box is varied when the vehicle runs. The self-steering property of the wheelset is enhanced, and stability in running on a straight track is secured.

Abstract: A vibration control apparatus for vehicles to be installed on the vehicle wherein a vehicle body is supported on a truck through springs and damping mechanisms, for suppressing the vibrations of the vehicle body and enhancing the riding quality of the vehicle, comprising a vibration detector which detects the vibration of the vehicle body, a compensator circuit which compensates the detection output of the vibration detector and produces a control output for suppressing the vibration of the vehicle body, a fluid operating mechanism which controls the relative displacement between the vehicle body and the truck and which is connected to the vehicle body on one side and to the truck on the other side, a fluid control device which controls the fluid operating mechanism by the use of the control output produced by the compensator circuit, and damping control means to suppress the damping function of the damping mechanism upon sensing the state under which the vibration of the vehicle body is suppressed by the flu