Kobe Steel, Ltd.

Kobelco Construction Machinery Co., Ltd.

Masaya Nishizawa

Yoshimune Mori

Yasumasa Kimura

Masashi Kawabata

Kiyotsuna Kuchiki

Tomonori Nakashita

Takahiro Shinozaki

Eri Watanabe

Masashi Irie

Transmission of vibration from an engine to a cab is suppressed. An upper slewing body includes a slewing frame, an engine deck, a cab deck, a tank deck, and a vibration transmission regulating unit. The tank deck is arranged on the more laterally outer side than the slewing frame and is fixed to the slewing frame. The tank deck is arranged forward of the engine deck and is arranged rearward of the cab deck. The vibration transmission regulating unit is provided between the engine deck and the tank deck to regulate direct transmission of vibration from the engine deck to the tank deck, the vibration occurring as the engine operates.

Upper slewing body

The vibration of a cab deck as well as the mass of a deck supporting member is suppressed. A slewing frame of an upper slewing body includes a front plate connected to a second side plate. A cab deck is disposed on a front side of an engine deck with a gap between the cab deck and the engine deck. A deck supporting member is connected to the second side plate and the cab deck. When viewed along an up-and-down direction, a connection portion of the front plate to be connected to the second side plate is opposed to, in the lateral direction via the second side plate, a connection portion of the deck supporting member to be connected to the second side plate.

Growing community of inventors

Hyogo, Japan

Masaya Nishizawa