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1. (WO2017149162) MOTOR FOR EXTERNAL BRAKE RELEASE SYSTEM, ASSOCIATED SYSTEMS AND ASSOCIATED METHODS

Pub. No.:    WO/2017/149162    International Application No.:    PCT/EP2017/055214
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Tue Mar 07 00:59:59 CET 2017
IPC: B60T 1/06
B60T 13/22
F03C 1/04
F16D 65/46
F16D 65/56
F03C 1/26
Applicants: POCLAIN HYDRAULICS INDUSTRIE
Inventors: MAHER, Matt
GRILLON, Gilles
GOUZOU, Christophe Pierre Jean
LE BARON, Gérome
Title: MOTOR FOR EXTERNAL BRAKE RELEASE SYSTEM, ASSOCIATED SYSTEMS AND ASSOCIATED METHODS
Abstract:
The invention proposes a hydraulic motor (100) comprising a cylinder block (106) and a drive shaft (120), the cylinder block (106) being configured to drive the rotation of the drive shaft (120), the said drive shaft (120) comprising: – an external end (124) forming the movement output shaft of the motor (120), – an internal end (126), the drive shaft (120) extending in a longitudinal direction (X), the motor comprising a hydraulic braking system (200) configured to: – allow the drive shaft (120) to rotate when a hydraulic release pressure is applied, and – keep the drive shaft (120) immobile otherwise, the braking system (200) comprising a brake piston (220) situated in the continuation of the internal end (126) of the shaft (120) and mobile translationally in the longitudinal direction (X), the motor (100) being characterized in that the drive shaft (120) comprises a longitudinal through-duct (128) to access control of the longitudinal position of the brake piston (220).