Rail vehicle, manufacturing method thereof, and hollow shape member user for the same

Abstract

A rail vehicle capable of preventing reduction in strength and noise occurrence in a connecting portion of a low roof construction body to a roof construction or a side construction body, and facilitating mounting of the low roof construction body to the roof construction body or the side construction body, its manufacturing method and a hollow shape member used for the same are provided. In joining a hollow shape member 120 constructing a side construction body and a hollow shape member 210 constructing a low roof construction body 20 , an uppermost portion above a spot to be a joint portion of the hollow shape member 120 to the low roof construction body 20 is cut, and a first protruded rib 124 and a second protruded rib 125 are left at an upper end portion 128 of the hollow shape member 120 toward the low roof construction body 20 . Next, the low roof construction body 20 is lowered from above the side construction body 12 , the first engaging rib 214 and the second engaging rib 215 of the low roof construction body 20 are mounted on the first protruded rib 124 and the second protruded rib 125 , and butted portions 220 and 221 are welded from a vehicle outer side or a vehicle inner side. Occurrence of a level difference of the welding spot which becomes a noise generation source can be prevented, and manufacture of the vehicle body can be facilitated.

1 . A rail vehicle in a rail vehicle construction body in which a roof construction body constructing a top surface of a vehicle body and a side construction body constructing a side surface of the vehicle body are each constructed by a hollow shape member formed by two face plates and a plurality of ribs connecting the face plates, 
 wherein a low roof construction body loaded with an on roof apparatus is joined at both its end portions in its vehicle width direction, to an upper end portion of the side construction body;    wherein in joint portions of the side construction body and the low roof construction body, the low roof construction body is mounted on the side construction body by engaging portions formed at both end portions in the vehicle width direction being mounted on mounting portions formed on the upper end portion of the side construction body; and    wherein the joint portions are welded in a state in which the engaging portions are mounted on the mounting portions.    
   
   
       2 . The rail vehicle according to  claim 1 , 
 wherein the engaging portions are engaging ribs formed to protrude toward the upper end portion of the side construction body; and    wherein the mounting portions formed at the upper end portion of the side construction body are protruded ribs that are respectively formed to protrude toward both end portions in the vehicle width direction of the low roof construction body, and have upper surfaces made mounting surfaces on which the engaging ribs are mounted.    
   
   
       3 . The rail vehicle according to  claim 1 , 
 wherein the engaging portions are engaging ribs formed to protrude toward the upper end portion of the side construction body;    wherein the mounting portions formed at the upper end portion of the side construction body are protruded ribs that are respectively formed to protrude toward both end portions in the vehicle width direction of the low roof construction body, and have upper surfaces made mounting surfaces on which the engaging ribs are mounted;    wherein the engaging ribs and the protruded ribs are provided as two joint sets distantly placed at the vehicle outer side and the vehicle inner side in the respective joint portions; and    wherein the joint set located at the vehicle outer side is disposed at an outer side in the vehicle width direction at a distance which makes it possible to avoid interference with the joint set at the vehicle inner side on an occasion of mounting the low roof construction body on the side construction body.    
   
   
       4 . The rail vehicle according to  claim 1 , 
 wherein the engaging portions are engaging ribs formed to protrude toward the upper end portion of the side construction body;    wherein the mounting portions formed at the upper end portion of the side construction body are protruded ribs that are respectively formed to protrude toward both end portions in the vehicle width direction of the low roof construction body, and have upper surfaces made mounting surfaces on which the engaging ribs are mounted;    wherein the engaging ribs and the protruded ribs are provided as two joint sets distantly placed at the vehicle outer side and the vehicle inner side in the respective joint portions;    wherein the joint set located at the vehicle outer side is disposed at an outer side in the vehicle width direction at a distance which makes it possible to avoid interference with the joint set at the vehicle inner side on an occasion of mounting the low roof construction body on the side construction body;    wherein the joint set at the vehicle outer side is constructed by a first protruded rib protruded in a position recessed by a predetermined depth from a vehicle outer side surface of the side construction body, and a first engaging rib which is formed to extend with a thickness corresponding to the predetermined depth from the face plate at the vehicle outer side, of the low roof construction body and is mountable on the first protruded rib; and    wherein the joint set at the vehicle inner side is constructed by a second protruded rib which protrudes by extending from the face plate at the vehicle inner side of the side construction body, and a second engaging rib which is formed in a position raised by a height corresponding to a thickness of the second protruded rib from a vehicle inner side surface of the low roof construction body, and is mountable on the second protruded rib.    
   
   
       5 . The rail vehicle according to  claim 1 , 
 wherein the engaging portions are engaging ribs formed to protrude toward the upper end portion of the side construction body;    wherein the mounting portions formed at the upper end portion of the side construction body are protruded ribs that are respectively formed to protrude toward both end portions in the vehicle width direction of the low roof construction body, and have upper surfaces made mounting surfaces on which the engaging ribs are mounted;    wherein the engaging ribs and the protruded ribs are provided as two joint sets distantly placed at the vehicle outer side and the vehicle inner side in the respective joint portions;    wherein the joint set located at the vehicle outer side is disposed at an outer side in the vehicle width direction at a distance which makes it possible to avoid interference with the joint set at the vehicle inner side on an occasion of mounting the low roof construction body on the side construction body;    wherein the joint set at the vehicle outer side is constructed by a first protruded rib protruded in a position recessed by a predetermined depth from a vehicle outer side surface of the side construction body, and a first engaging rib which is formed to extend with a thickness corresponding to the predetermined depth from the face plate at the vehicle outer side of the low roof construction body and is mountable on the first protruded rib;    wherein the joint set at the vehicle inner side is constructed by a second protruded rib which protrudes by extending from the face plate at the vehicle inner side of the side construction body, and a second engaging rib which is formed in a position raised by a height corresponding to a thickness of the second protruded rib from a vehicle inner side surface of the low roof construction body, and is mountable on the second protruded rib;    wherein in the joint set at the vehicle outer side, the face plate of the side construction body at the vehicle outer side and the first engaging rib of the low roof construction body are welded from the vehicle outer side; and    wherein in the joint set at the vehicle inner side, the second protruded rib of the side construction body and the vehicle inner side face plate of the low roof construction body are welded from the vehicle inner side.    
   
   
       6 . The rail vehicle according to  claim 1 , 
 wherein the mounting portion is also formed at the side construction body at a position where the low roof construction body is not provided.    
   
   
       7 . The rail vehicle according to  claim 1 , 
 wherein an end portion in a longitudinal direction of the roof construction body and the low roof construction body are connected via a connecting plate; and    wherein the connecting plate is fillet-welded to a vehicle outer side face plate of a hollow shape member constructing the roof construction body, and the vehicle inner side face plate, which is at the roof construction body side and constructs the low roof construction body.    
   
   
       8 . A manufacturing method of a rail vehicle in a manufacturing method of a rail vehicle construction body in which a roof construction body constructing a top surface of a vehicle body and a side construction body constructing a side surface of the vehicle body are each constructed by a hollow shape member formed by two face plates and a plurality of connecting ribs connecting the face plates, comprising the steps of: 
 by cutting off an upper end portion corresponding to an on roof apparatus to be loaded on the vehicle with the roof construction body out of the hollow shape member constituted of a vehicle outer side face plate and a vehicle inner side face plate and the connecting ribs connecting both the face plates and constructing the side construction body, exposing mounting portions in cutoff portions which appear;    by lowering a low roof construction body loaded with the on roof apparatus from above, and mounting engaging portions formed at both end portions in its vehicle width direction on the mounting portions appearing in the cutoff portions of the side construction body, joining the low roof construction body to the upper end portion of the side construction body; and    welding the joint portion in a state in which the engaging portions are mounted on the mounting portions.    
   
   
       9 . The manufacturing method of a rail vehicle according to  claim 8 , 
 wherein the mounting portions are a first protruded rib protruding in a horizontal direction from a vicinity of an intersection point of the connecting rib and the vehicle outer side face plate, and a second protruded rib protruding in a horizontal direction from an intersection point of the vehicle inner side face plate and the connecting rib; and    wherein the engaging portions are a first engaging rib formed from the face plate at a vehicle outer side of the low roof construction body as its extension and mountable on the first protruded rib, and a second engaging rib formed in a position raised from a vehicle inner side surface of the low roof construction body by a height corresponding to a thickness of the face plate at a vehicle inner side of the side construction body and mountable on the second protruded rib.    
   
   
       10 . The manufacturing method of a rail vehicle according to  claim 8 , 
 wherein the mounting portions are a first protruded rib protruding in a horizontal direction from a vicinity of an intersection point of the connecting rib and the vehicle outer side face plate, and a second protruded rib protruding in a horizontal direction from an intersection point of the vehicle inner side face plate and the connecting rib;    wherein the engaging portions are a first engaging rib formed from the face plate at a vehicle outer side of the low roof construction body as its extension and mountable on the first protruded rib, and a second engaging rib formed in a position raised from a vehicle inner side surface of the low roof construction body by a height corresponding to a thickness of the face plate at a vehicle inner side of the side construction body and mountable on the second protruded rib;    wherein in a joint portion where the low roof construction body is joined to the upper end portion of the side construction body, the face plate at the vehicle outer side of the side construction body and the first engaging rib of the low roof construction body are welded from a vehicle outer side; and    wherein the second protruded rib of the side construction body and the face plate at a vehicle inner side of the low roof construction body are welded from the vehicle inner side.    
   
   
       11 . A hollow shape member comprising two face plates, and a plurality of connecting ribs connecting both the face plates, comprising: 
 a first protruded rib formed to protrude toward a hollow portion of the hollow shape member from a joint spot of one of the face plates and the connecting rib; and    a second protruded rib formed to protrude toward outside from a joint spot of the other face plate and the connecting rib.