Kawasaki Jukogyo Kabushiki Kaisha

Kawasaki Railcar Manufacturing Co., Ltd.

Tomohiro Narita

Kazuo Isomura

Masahiro Sakahira

Takanori Tojo

Tomohide Maeba

Naoki Hikosaka

Satoshi Ikeda

Takaya Ono

Mitsuru Yokoyama

Masahiro Hamada

Hideki Fukumoto

Teruaki Mizukawa

A railcar bogie includes a bogie frame including a cross beam and supports, the supports disposed at respective car width direction end portions of the cross beam. There are a plurality of axle boxes to accommodate a plurality of bearings supporting a pair of axles, a plate spring extending in a car longitudinal direction and supported by a pair of the axle boxes which are away from each other in the car longitudinal direction among the plurality of axle boxes. The plate spring supports the cross beam while being pressed by the corresponding support from above such that the pressing member is separable from the plate spring. Elastic walls are at both respective sides of the supports in the car longitudinal direction and sandwiched between a lower surface of the bogie frame and an upper surface of the plate spring so as to be compressed.

Railcar bogie

A bolster beam of a railcar bogie includes a bolster beam main body in which a pair of auxiliary air chambers respectively communicating with a pair of air springs are formed; and a stopper structure projecting upward from a car width direction middle portion of the bolster beam main body. An upper wall of the bolster beam main body includes a middle upper wall portion at which the stopper structure portion is provided; and a pair of outside upper wall portions adjacently located at both respective car width direction sides of the middle upper wall portion and joined to the middle upper wall portion. The pair of outside upper wall portions include respective upward bent portions that are located at a car width direction middle side and bent upward toward the stopper structure portion.

Bolster beam of railcar bogie

Invention includes bogie frame and single link type traction device coupling frame and carbody and transmitting force to carbody, force acting on bogie frame. Single link type traction device includes single link member, receiving seat, and first fastening member. Link member couples center pin of carbody and bogie frame and extends in car longitudinal direction. Receiving seat is provided at fixation target object constituted by center pin or bogie frame, and link member is fixed to receiving seat. First fastening member includes bolt and nut and fixes an end portion of link member to receiving seat. Bolt is inserted into end portion of link member and receiving seat from one side in car longitudinal direction, and nut is threadedly engaged with bolt from other side in car longitudinal direction. Receiving seat includes through hole into which bolt is inserted and nut accommodating space communicating with through hole and accommodating nut.

Railcar bogie and railcar including same

A restricting member is configured to restrict abnormal rising of a carbody when an air spring expands by a predetermined amount or more. The restricting member includes: a base portion; a contact portion provided at the base portion and configured to be brought into contact with a lower surface of a bogie frame when the air spring expands by the predetermined amount or more; and a temporary fastening portion formed at the base portion. The temporary fastening portion is configured to be attachable to and detachable from a temporary fastened portion formed at a side surface of a center pin extending downward from a carbody.

Restricting member and railcar including restricting member

A railcar includes: a carbody; a bogie constituting member including an interface plate provided at a lower portion of the carbody, an air spring, and a bogie; an automatic level controlling valve configured to maintain a height of the spring within a certain range; a first attaching portion provided on a side surface of the plate, the valve being detachably attached to the side surface of the plate by the first attaching portion; and attaching means provided at the lower portion of the carbody, the valve being detachably attached to the lower portion of the carbody by the attaching means, the bogie constituting member being separable from the carbody in a state where the valve is attached to the side surface of the plate through the first attaching portion or a state where the valve is attached to the lower portion of the carbody through the attaching means.

Railcar

A gasket for an electrical junction box of a railcar is fitted in a groove portion formed on a contact surface of a side wall portion or a contact surface of a cover in the electrical junction box including: a box main body having the side wall portion defining an opening communicating with an outer space; and the cover closing the opening. Further, the gasket for the electrical junction box of the railcar includes: small width portions, a width of each of the small width portions being smaller than a width of the groove portion; and large width portions each having projections projecting toward both respective sides of the small width portion in a width direction and having a larger width than the width of the small width portions. The small width portions and the large width portions are alternately provided.

Growing community of inventors

Kobe, Japan

Tomohiro Narita