Patent ID: 8863905

Claim:
A wheel loader, comprising: an engine; a working unit configured to be driven by a pressurized oil produced by driving of the engine; a transmission including a case, a rotary shaft disposed inside the case, and a lubricated part disposed on an outer peripheral part of the rotary shaft, the transmission being configured and arranged to execute switching between forward travelling and rearward travelling, and gear shifting, the transmission further including a first oil accumulating part disposed above the lubricated part, the first oil accumulating part accumulating a scattered lubricating oil, a second oil accumulating part disposed at a position below the first oil accumulating part, a centrifugal force acting on the position, the second oil accumulating part accumulating the lubricating oil from the first oil accumulating part, a communication oil path allowing the first oil accumulating part and the second oil accumulating part to communicate with each other, a lubrication oil path having a vertical hole, the vertical hole being formed in the rotary shaft and extending radially from an outer peripheral surface of the rotary shaft, the lubrication oil path communicating with the second oil accumulating part, the lubrication oil path being configured to direct the lubricating oil accumulated in the second oil accumulating part to the lubricated part when the rotary shaft is rotated at a rotational speed less than a predetermined rotational speed, and the second oil accumulating part comprising a shaft end space disposed at an end of the rotary shaft, the shaft end space accumulating the lubricating oil from the first oil accumulating part, and a horizontal hole formed in a center part of the rotary shaft and extending axially, the horizontal hole allowing the shaft end space and the vertical hole to communicate with each other.