{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
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  "description": "An obstacle detector of a construction vehicle includes a brake mechanism which includes: a first hydraulic closed circuit including a pump for rolling, which is equipped with a swash plate, and a motor for rolling, which is connected with the pump for rolling; a second hydraulic closed circuit…",
  "path": "/patents/1307503",
  "publishedAt": "2021-12-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F16H61/433",
    "SAKAI HEAVY INDUSTRIES, LTD."
  ],
  "textContent": "An obstacle detector of a construction vehicle includes a brake mechanism which includes: a first hydraulic closed circuit including a pump for rolling, which is equipped with a swash plate, and a motor for rolling, which is connected with the pump for rolling; a second hydraulic closed circuit including a first hydraulic passage communicating with one side of the pump for rolling and a second hydraulic passage communicating with another side of the pump for rolling, to actuate the swash plate; and a neutral valve provided in the second closed circuit. When an emergency brake is activated, at least one of a compressive returning force to compress a low-pressure side of the tilted swash plate for returning the swash plate to a neutral position and a decompressive returning force to decompress a high-pressure side of the swash plate for returning the swash plate to the neutral position is generated.",
  "title": "OBSTACLE DETECTOR OF CONSTRUCTION VEHICLE"
}