The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2025
Filed:
Mar. 23, 2023
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Akinori Kondo, Tsukuba, JP;
Takeshi Shinohara, Hitachinaka, JP;
Hiroki Yamamoto, Kashiwa, JP;
Daisuke Takeshita, Tsuchiura, JP;
Yuutarou Iwabuchi, Ushiku, JP;
Takahiro Sato, Ibaraki, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A traveling device () is provided with a cylindrical spindle (), a rotation shaft () that is disposed on an inner peripheral side of the spindle () and is rotated by a traveling motor (), a wheel attaching cylinder () that is rotatably disposed on an outer peripheral side of the spindle () and to which a wheel () is attached and in the inside of which the lubricating oil (L) is accommodated, a gear reduction mechanism () that decelerates the rotation of the rotation shaft () and transmits the decelerated rotation to the wheel attaching cylinder (), a retainer () that is provided with a bearing fitting hole (A) and is disposed on the inner peripheral side of the spindle (), and a bearing () that is attached to the retainer () and supports the rotation shaft (). A collar part (D) that abuts on the bearing () is disposed on the surface of the retainer () at the traveling motor ()-side, and an oil reservoir plate () is disposed on the surface of the retainer () at the gear reduction mechanism ()-side, wherein the oil reservoir plate () forms an oil reservoir part () of the lubricating oil (L) together with the collar part (D) and an inner peripheral surface (C) of the bearing fitting hole (A).