{
  "$type": "site.standard.document",
  "description": "A bogie and a rail vehicle. The bogie comprises: an axle (1), wherein the middle of the axle (1) is downwardly recessed to form an accommodation space, and two ends of the axle (1) are symmetrically provided with journals (11); wheels (2) connected to the journals (11) by means of a bearing (4)…",
  "path": "/patents/1417872",
  "publishedAt": "2023-01-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60B17/00",
    "CRRC TANGSHAN CO LTD [CN]"
  ],
  "textContent": "A bogie and a rail vehicle. The bogie comprises: an axle (1), wherein the middle of the axle (1) is downwardly recessed to form an accommodation space, and two ends of the axle (1) are symmetrically provided with journals (11); wheels (2) connected to the journals (11) by means of a bearing (4); and a buffer device (3) located in the accommodation space; wherein the buffer device (3) comprises: a primary spring assembly provided on the axle (1); a secondary spring assembly provided on the top of the primary spring assembly; and a slewing ring (35) provided on the top of the secondary spring assembly and used for connected to a vehicle body (7) to transmit a traction or brake force to the vehicle body (7). The flexibility of a vehicle in a turning process can be improved by means of the accommodation space.",
  "title": "BOGIE AND RAIL VEHICLE"
}