{
  "$type": "site.standard.document",
  "description": "Provided is an electric construction machine that enables quick and easy replacement of the battery device while allowing for easy replacement of the battery device with different types of battery devices according to the progress of the battery technology. An upper swing structure 3 is made up of…",
  "path": "/patents/991491",
  "publishedAt": "2013-04-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K1/04",
    "HITACHI CONSTRUCTION MACHINERY [JP]"
  ],
  "textContent": "Provided is an electric construction machine that enables quick and easy replacement of the battery device while allowing for easy replacement of the battery device with different types of battery devices according to the progress of the battery technology. An upper swing structure 3 is made up of a vehicle main body 100 and a vehicle rear part 200. The battery device 31 is mounted on the vehicle rear part 200. The electric construction machine is configured so that the vehicle rear part 200 is attachable and detachable to/from a vehicle body frame 101 of the vehicle main body 100 using a bolt. A main frame 120 overhangs and extends in a longitudinal direction to reach the underside of the vehicle rear part 200. The vehicle rear part 200 includes a rear frame 201 to be mounted on the main frame 120 and fixed with the bolt and a rear cover 205 covering the rear frame 201, forming a battery room 204, and having a shape imitating a counter weight.",
  "title": "ELECTRIC CONSTRUCTION MACHINE"
}