{
  "$type": "site.standard.document",
  "description": "A drive device for a construction machine, which includes: a motor as a drive source; a speed reducer configured to transmit a rotation of the motor to a driven unit at a reduced speed; and a brake mechanism configured to generate a braking force against the rotation to be transmitted from the…",
  "path": "/patents/962716",
  "publishedAt": "2015-03-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60T1/062",
    "KOBELCO CONSTR MACH CO LTD [JP]"
  ],
  "textContent": "A drive device for a construction machine, which includes: a motor as a drive source; a speed reducer configured to transmit a rotation of the motor to a driven unit at a reduced speed; and a brake mechanism configured to generate a braking force against the rotation to be transmitted from the speed reducer to the driven unit, wherein the speed reducer has a casing in which lubricating oil and the brake mechanism are provided, and wherein the brake mechanism includes: a ring-shaped brake piston; and a brake plate configured to generate the braking force by means of a pressing force of the brake piston, and wherein the brake piston has: a plurality of oil pockets provided in the brake piston at respective positions along a circumferential direction of the brake piston, each of the oil pockets formed as a space capable of storing lubricating oil; oil inlets allowing lubricating oil rising during operation of the drive device to be introduced into the oil pockets respectively; and oil outlets allowing lubricating oil stored in the respective oil pockets to be discharged.",
  "title": "CONSTRUCTION MACHINE DRIVE DEVICE"
}