Abrégé

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.

Classes IPC  ?

• F16H 3/48 - Transmissions ayant uniquement deux engrenages centraux reliés par des engrenages à mouvement orbital avec engrenages orbitaux uniques ou paires d'engrenages orbitaux rigidement liés

Abrégé

[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.

Classes IPC  ?

• B60K 17/32 - Agencement ou montage des transmissions sur les véhicules les éléments propulsifs terminaux, p. ex. les roues, étant basculantes autour d'un pivot horizontal

Abrégé

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).

Classes IPC  ?

• F03C 1/053 - Machines motrices à liquide à pistons alternatifs avec des cylindres multiples et caractérisées par le nombre ou la disposition des cylindres avec cylindres disposés en étoile ou en éventail les moyens coopérant avec un élément actionné aux extrémités intérieures des cylindres