US 12,305,355 B2
Drive device and construction machine
Etsuro Komori, Tokyo (JP)
Assigned to NABTESCO CORPORATION, Tokyo (JP)
Filed by Nabtesco Corporation, Tokyo (JP)
Filed on Oct. 17, 2022, as Appl. No. 17/967,580.
Claims priority of application No. 2021-189635 (JP), filed on Nov. 22, 2021; and application No. 2022-083048 (JP), filed on May 20, 2022.
Prior Publication US 2023/0160173 A1, May 25, 2023
Int. Cl. E02F 3/42 (2006.01); E02F 3/32 (2006.01); E02F 9/22 (2006.01); F15B 15/20 (2006.01); F16H 1/46 (2006.01)
CPC E02F 3/425 (2013.01) [E02F 3/32 (2013.01); E02F 9/2271 (2013.01); F15B 15/20 (2013.01); F16H 1/46 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A drive device comprising:
two fluid motors serving as drive sources for generating rotational forces; and
a channel member having a supply channel for supplying a pressure fluid to the two fluid motors,
wherein each of the two fluid motors includes:
a casing having a supply port and a discharge port for the pressure fluid;
a drive shaft rotatably supported to the casing; and
a motive power generating unit provided in the casing and configured to rotate the drive shaft with the pressure fluid, the pressure fluid being supplied to the motive power generating unit through the supply port and discharged from the motive power generating unit through the discharge port,
wherein the two fluid motors are arranged such that the respective drive shafts are disposed parallel to each other and oriented toward opposite sides along rotation axes of the drive shafts,
wherein the channel member includes two separated supply channels configured to supply the pressure fluid to the supply ports of the two fluid motors,
wherein the two separated supply channels each have a first end in communication with the supply channel and a second end forming the supply port, and
wherein the supply channel supplies the pressure fluid supplied from a common supply source through each of the separated supply channels to the supply ports of the two fluid motors.