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: 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: 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. An end structure 50 is disposed at an end portion of the vehicle body 11 through a crushable zone 40. The end structure is provided with an end post, corner posts, and an upper reinforcement beam 56. The lower end portions of the end post and the corner posts are joined to an end beam 26 of an underframe, and the upper end portions of the end post and the corner posts are joined to the upper reinforcement beam, respectively. In the crushable zone, there are provided a lower slide portion and an upper slide portion. The lower slide portion is configured by connecting a slide center beam projecting from a center portion of an end beam of the underframe in a direction of a cap beam with a guide center beam projecting from the cap beam in a vehicle end direction by a lower fuse member.

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 vehicle that elevates a working beam installed between a pair of booms with a working beam elevating unit and can ensure the area of a load receiving surface where a load is loaded. The working beam elevating unit is received in a working beam and one end of a chain is fixed to a boom. Therefore, the working beam is moved up/down by loosening and retracting the chain. Therefore, as the working beam elevating unit is installed at the working beam, it is not necessary to ensure a space for installing the working beam on a vehicle body. Therefore, it is correspondingly possible to enlarge the space (area of the load receiving surface) on the vehicle for loading a load.

Abstract: Provided is a vehicle that controls operation of a loading/unloading apparatus based on a manipulation instruction from a manipulation remote control unit and can ensure safety when loading/unloading a load. An opening window is formed to be open on the rear side of an operator cab and an LCD displaying the operation state of a loading/unloading apparatus is installed, with the display surface facing the opening window, in the operator cab. Therefore, it is possible to check the display of the LCD from the outside of the operator cab through the opening window. Therefore, an operator can perform manipulation while acquiring the information on the operation state of the loading/unloading apparatus from the LCD, such that it is possible to ensure safety when loading/unloading a load by manipulating the manipulation remote control unit.

Abstract: First and second connection terminals that are connection places of manipulation remote control units are installed at the front and rear of a vehicle. Therefore, it is possible to manipulate the manipulation remote control units at positions (ahead of and behind the vehicle) according to the amount of sunlight by changing the connection position. In this case, the rotation direction of the loading/unloading apparatus is reversed in accordance with the connection place of the manipulation remote control unit, such that it is possible to prevent miss-manipulation of the manipulation remote control unit by an operator who manipulates ahead of and behind the vehicle.

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: 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: The impact absorbers having different lengths are formed by providing notches in one of opposed surfaces on front end side in a collision direction of a square pipe having a square in cross section. The three impact absorbers are disposed in a width direction while two impact absorbers are disposed in a height direction such that directions of the notches differ from each other, and the impact absorbers are disposed in integrally welded to form the impact-absorbing member.

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: A slide structure 21 of a railway vehicle includes a slide end beam 22 disposed in front of an end beam 16 that constitutes a portion of a body, and a slide center beam 23 projecting rearward of the slide end beam. An underframe 12 is provided with a guide portion 24 that guides the slide center beam in the longitudinal direction of the body. The underframe 12 is also provided with a holding member 28 that holds the slide center beam at a front position of the body with respect to the guide portion. The holding member has such a tensile strength that the holding member couples the underframe and the slide structure to each other in the longitudinal direction of the body and the holding member is broken when a tensile load in a rearward direction of the body applied from the slide structure to the holding member exceeds a preset tensile load, thereby permitting the slide structure to move in the rearward direction of the body.

Abstract: The present invention provides a railroad vehicle having a truck structure in which soundproof effect can sufficiently be enhanced. Soundproof member 22 having flexibility is mounted to support member 21 fixed to axle box 15. The support member is fixed to the axle box at an outer side of a vehicle body at wheel 14 in such a manner that the lower end thereof is located above a position set beforehand. The soundproof member is arranged parallel to the rail at the outer side of the vehicle body at the position where the wheel rolls on rail 17. The upper part of the soundproof member is mounted to the support member in such a manner that the position thereof in the vertical direction can be adjusted, and the lower end of the soundproof member is located above a surface of the rail.

Abstract: An open/close control system for an inspection lid adapted not to open while a vehicle travels. An emergency release device is provided behind the inspection lid, where the emergency release device disables power transmission of a driver which opens and closes a side entrance/exit door of a railway vehicle. The emergency release device is installed in a space inside a wall surface inside the vehicle, and the space can be opened and closed by the inspection lid. The open/close control system has a locking device provided in the space inside the wall surface in order to restrict rotation of the inspection lid, and also has an open/close controller which detects traveling of the railway vehicle to actuate the locking device.

Abstract: A bogie lateral movement-limiting system capable of effectively restricting the lateral movement of a derailed bogie. The system comprises derailment prevention guards (62a, 62b) laid along the inside of paired left and right rails, and a lateral movement-limiting device (52) installed on the lower part of the bogie (30). The device (52) has a stopper (51) projecting downward at a position between the wheels of the bogie and slidingly contacts with the inner surfaces of the derailment prevention guards (62a, 62b) in case of a derailment of bogie.

Abstract: A slide structure 21 of a railway vehicle includes a slide end beam 22 disposed in front of an end beam 16 that constitutes a portion of a body, and a slide center beam 23 projecting rearward of the slide end beam. An underframe 12 is provided with a guide portion 24 that guides the slide center beam in the longitudinal direction of the body. The underframe 12 is also provided with a holding member 28 that holds the slide center beam at a front position of the body with respect to the guide portion. The holding member has such a tensile strength that the holding member couples the underframe and the slide structure to each other in the longitudinal direction of the body and the holding member is broken when a tensile load in a rearward direction of the body applied from the slide structure to the holding member exceeds a preset tensile load, thereby permitting the slide structure to move in the rearward direction of the body.

Abstract: A pile driver enables angle adjustment and pile core adjustment of a leader to be performed easily, by minimizing an angle change of the leader when the pile core adjustment is performed. In the pile driver, an upper part of the leader is supported by a leader erect cylinder from behind, and a lower part of the leader is supported by a forward and backward adjustment means that includes a leader arm having a rotation base rotatably attached to a base machine and a rotation end rotatably attached to the lower part of the leader. A first arc traced by the rotation end when the leader arm is rotated to adjust the lower part of the leader forward and backward and a second arc traced by a connection part between the leader and a tip of the leader erect cylinder when the lower part of the leader is adjusted are both convex upward. The first arc has a smaller radius than the second arc.

Abstract: A pile driver includes a leader rotation/holding mechanism that can firmly hold a leader in a rotatable state and also reliably rotate the leader using a general-purpose, inexpensive hydraulic motor by keeping the hydraulic motor from action of a bending moment from the leader. The pile driver has a leader revolver that includes a mechanism for rotating a leader. The leader revolver includes an outer tube and an inner tube that is concentrically arranged inside the outer tube via a pair of tapered roller bearings provided at two upper and lower positions. A lower part of the leader is connected, in an integrally rotatable state, to an upper part of the inner tube protruding upward from an upper end opening of the outer tube. A hydraulic motor is placed in a lower part of the leader revolver.

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: The impact absorbers having different lengths are formed by providing notches in one of opposed surfaces on front end side in a collision direction of a square pipe having a square in cross section. The three impact absorbers are disposed in a width direction while two impact absorbers are disposed in a height direction such that directions of the notches differ from each other, and the impact absorbers are disposed in integrally welded to form the impact-absorbing member.