Abstract

The objective of the present invention is to reduce the size of and simplify a vehicle travel drive device and the like.　When hydraulic pressure is supplied from a first port P1, the pressing of a first drive clutch 12 by a first spring 16 is released, a sun gear G11 of a drive shaft 11 is made to rotate by a drive source, and a planetary gear G14 revolves, so that a drive gear G15 rotates in a low-speed mode. When hydraulic pressure is supplied from a second port P2, the pressing of a second drive clutch 14 by a second spring 17 is released, a transmission gear G13 of a ring gear carrier 13 and the sun gear G11 of the drive shaft 11 are made to rotate by the drive source, a ring gear G12 rotates, and a planetary gear G14 revolves, so that the drive gear G15 rotates in a high-speed mode.

IPC Classes  ?

• F16H 3/48 - Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears

Abstract

[Problem] To provide a bogie axle device and a balance system capable of achieving a high balance ratio at low cost. [Solution] A balance system 4L is equipped with a reaction force separation mechanism 41L that receives drive power from a drive unit and a planetary gear mechanism 42L that transmits a reaction force against swinging to a swing housing. The reaction force separation mechanism 41L separates the received drive power into the drive power to be input to a drive force transmission mechanism and the reaction force to be input to the swing housing without using a ring gear. The planetary gear mechanism 42L amplifies the reaction force, inputs the amplified reaction force to the swing housing, and generates swing restraining torque for restraining the swinging of the swing housing.

IPC Classes  ?

• B60K 17/32 - Arrangement or mounting of transmissions in vehicles the ultimate propulsive elements, e.g. ground wheels, being rockable about a horizontal pivot

Abstract

Provided is a cam motor which is easy to manufacture and maintain. The cam motor is provided with: a main shaft (2) which is arranged so as to be able to rotate around the shaft centre; a cam disc (3) which is arranged on the main shaft (2) so as to be concentric with said main shaft (2) and on the outer periphery of which a cam surface (3a) is formed; a cylinder block (4) which is ring shaped and which is arranged such that the cam disc (3) is positioned inside of the ring; and a plurality of freely reciprocating pistons (42) which are arranged on the inner peripheral side of the cylinder block (4) and the tip sections of which are in contact with the cam surface (3a). The shape of the cam surface (3a) is set such that the cam disc (3) rotates with the reciprocal motion of the pistons (42).

IPC Classes  ?

• F03C 1/053 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the inner ends of the cylinders