METHOD AND DEVICE FOR PREVENTING EXCESSIVE WEAR IN GEAR ASSEMBLIES

• US 20150114758A1
• Filed: 07/09/2013
• Published: 04/30/2015
• Est. Priority Date: 07/10/2012
• Status: Abandoned Application

• Current Assignee: Universitat Politecnica De Catalunya
• Original Assignee: Universitat Politecnica De Catalunya
• Inventors: Casals Terr, Jasmina, Farr Llads, Josep
• Application Number:
  US14/406,846
• Publication Number:
  US 20150114758A1
• Time in Patent Office: Days
• US Class Current: 184/6.12
• CPC Class Codes: F05B 2260/98 Lubrication
• CPC Class Codes: F16H 55/17 Toothed wheels worm wheels F16H55/22; chain wheels F16H55/30
• CPC Class Codes: F16H 57/043 within rotary parts, e.g. axial channels or radial openings in shafts
• CPC Class Codes: F16H 57/0431 Means for guiding lubricant directly onto a tooth surface or to foot areas of a gear, e.g. by holes or grooves in a tooth flank
• CPC Class Codes: F16H 57/0456 Lubrication by injection; Injection nozzles or tubes therefor oil mist or spray lubrication F16H57/0458
• CPC Class Codes: F16H 57/0493 Gearings with spur or bevel gears differentials with spur or bevel gears F16H57/0483

Abstract

METHOD AND DEVICE FOR PREVENTING EXCESSIVE WEAR IN GEARS, involving lubricating the contact point between the wheels (1) of a gear (2), injecting lubricant into said point via parts (3) housed in the notches (4) that determine the spaces between teeth (5), via a system of channels with a lateral opening provided in said parts (3). The width (a) and thickness (b) of the parts (3) coincide respectively with the width of the bottom of the valley of the notch (4) and with the space between the surface of the crest (7) of the engaging tooth (5) and that of the valley of the notch (4) which houses it. The parts (3) have through-holes (8) connected to longitudinal channels (9) that, at one of the ends thereof, meet in a laterally open notch (10). The same system that lubricates the rest of the gear assembly is used to inject the lubricant.

Claims

1. A method to prevent excessive wear in gears, comprising injecting a lubricant to a contact point between two wheels of a gear, the injecting being performed through parts housed in at least one of a plurality of notches that define spaces between teeth of one of said wheels, the injecting of said lubricant into said parts is via a channels system with a lateral opening provided in said parts in a manner that accommodates the injecting of the lubricant.

2. The method according to claim 1, wherein the injecting is performed with a lubricant distribution channels system that lubricates a rest of the gear, including therein a feed tube.

3. The method according to claim 2, further comprising a control valve for controlling action of lubricating of the contact point between the two wheels, the control valve being arranged in said feed tube, the control valve being mechanically driven by an engine (18) or by a wind turbine control.

4. A device to prevent excessive wear in gears, comprising

parts housed in at least one of a plurality of notches that define spaces between teeth of one of two wheels of gear;

a lubricant distribution channels system arranged to effect lubricant injection through said parts to a contact point between the two wheels of the gear, the lubricant distribution channels system that includes a lateral opening provided in said parts to accommodate the lubricant injection, and wherein

the parts have a planar and approximately rectangular configuration, which snugly fit a dedendum of any of the notches of the wheel that incorporates the parts; and

in that said parts have said lubricant distribution channels system that includes distribution channels for accommodating said lubricant injection.

5. The device according to claim 4, wherein a width and a thickness of the parts is variable and adapts in each case, respectively, to a width of the dedendum and to a space between a surface of a crest of the tooth of an engaging one of the two wheels and a surface of the dedendum in which the parts is housed.

6. The device according to claim 4, wherein the lubricant distribution channels system is variable in number according to geometry of the gear adapted to a position of the dedendum.

7. The device according to claim 6, wherein the lubricant distribution channels system comprises a plurality of through holes connected, at lower surface of the parts, with longitudinal grooves that in one of a plurality of ends of the parts converge into one of the notches to open laterally.

8. The device according to claim 4, wherein the parts (3) are of a material that is a polymer.