{
  "$type": "site.standard.document",
  "description": "[OBJECT] To improve safety by suppressing a wheel load variation that occurs when a railway vehicle is stopped in a section with diminishing cant, for example. [MEANS] A railway vehicle having a front bogie 2a and a rear bogie 2b with left and right air springs 1a and 1b disposed in the left and…",
  "path": "/patents/920021",
  "publishedAt": "2017-10-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60G99/00",
    "NIPPON STEEL & SUMITOMO METAL CORP [JP]"
  ],
  "textContent": "[OBJECT] To improve safety by suppressing a wheel load variation that occurs when a railway vehicle is stopped in a section with diminishing cant, for example. [MEANS] A railway vehicle having a front bogie 2a and a rear bogie 2b with left and right air springs 1a and 1b disposed in the left and right width direction of the railway vehicle and having a level controlling device 3 installed to track the height of the air springs 1a and 1b. The air springs 1a and 1b of the front bogie 2a and the rear bogie 2b are connected by an air pipe 6 in which is installed a left-right differential pressure regulating valve 5. The air springs 1a and 1a or 1b and 1b of the front bogie 2a and the rear bogie 2b are connected by an air pipe 8 in which is installed a front-rear differential pressure regulating valve 9. A choke valve 10 is installed in parallel with the front-rear differential pressure regulating valve 9. A differential pressure regulating valve 11 for front-rear imbalance is installed in series with the front-rear differential pressure regulating valve 9.",
  "title": "RAILWAY VEHICLE"
}