Global Patent Index - EP 3073133 B1

EP 3073133 B1 20190306 - OUTPUT SHAFT OF CYCLOID HYDRAULIC MOTOR AND SHAFT VALVE FLOW-DISTRIBUTION CYCLOID HYDRAULIC MOTOR

Title (en)

OUTPUT SHAFT OF CYCLOID HYDRAULIC MOTOR AND SHAFT VALVE FLOW-DISTRIBUTION CYCLOID HYDRAULIC MOTOR

Title (de)

AUSGANGSWELLE EINES KREISFÖRMIGEN HYDRAULIKMOTORS UND WELLENVENTILSTRÖMUNGSVERTEILUNG IN DIESEM KREISFÖRMIGEN HYDRAULIKMOTOR

Title (fr)

ARBRE DE SORTIE D'UN MOTEUR HYDRAULIQUE CYCLOÏDE ET MOTEUR HYDRAULIQUE CYCLOÏDE À RÉPARTITION DE FLUX PAR SOUPAPE D'ARBRE

Publication

EP 3073133 B1 20190306 (EN)

Application

EP 14863301 A 20140731

Priority

  • CN 201310584115 A 20131120
  • CN 201310584259 A 20140117
  • CN 2014083430 W 20140731

Abstract (en)

[origin: EP3073133A1] Disclosed are an output shaft (1) of a cycloid hydraulic motor and an axle valve flow-distribution cycloid hydraulic motor having same, belonging to the technical field of mechanical transmission. The main body of the output shaft includes a larger-diameter section (1-2) assembled in a casing (10) of the cycloid hydraulic motor and a smaller-diameter section (1-1) extending out of the casing. An engaging structure transmissibly connected with a linkage shaft (21) of the cycloid hydraulic motor is disposed in an inner hole of the larger-diameter section (1-2), and a dynamic engaging portion (1-2-1) is disposed on an external surface of the larger-diameter section for dynamically engaging with the casing (10), the dynamic engaging portion (1-2-1) includes at least two circumferential intermittent oil grooves (1-2-2); a groove bottom of each intermittent oil groove is formed by an eccentric arc about the center O' that deviates from the center O of an excircle of the dynamic engaging portion by a process eccentricity e, the radius R of the eccentric arc is greater than the radius r of the excircle of the dynamic engaging portion. The output shaft and the cycloid hydraulic motor can improve the working efficiency and reduce the manufacture cost, and can form a better oil film, enhance the radial bearing capacity, and ensure the lubrication and seal.

IPC 8 full level

F16C 3/02 (2006.01); F01C 1/10 (2006.01); F01C 21/02 (2006.01); F03C 2/08 (2006.01); F04C 2/10 (2006.01)

CPC (source: EP)

F01C 1/105 (2013.01); F01C 21/02 (2013.01); F03C 2/08 (2013.01); F04C 2/105 (2013.01); F04C 2240/50 (2013.01); F04C 2240/60 (2013.01)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 3073133 A1 20160928; EP 3073133 A4 20170222; EP 3073133 B1 20190306; EP 3073133 B8 20190605; WO 2015074440 A1 20150528

DOCDB simple family (application)

EP 14863301 A 20140731; CN 2014083430 W 20140731