METHOD OF CONTROLLING BEARING LUBRICATION SYSTEM

• US 20160178122A1
• Filed: 12/23/2014
• Published: 06/23/2016
• Est. Priority Date: 12/23/2014
• Status: Active Grant

• Current Assignee: Lincoln Industrial Corporation (Lincoln Holdings Enterprises, Inc.)
• Original Assignee: Lincoln Industrial Corporation (Lincoln Holdings Enterprises, Inc.)
• Inventors: Conley, Paul George, Inciong, Joe T, Uncapher, Bryan
• Granted Patent: US 9,695,979 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F16C 19/38 with two or more rows of rollers
• CPC Class Codes: F16C 33/6607 Retaining the grease in or near the bearing
• CPC Class Codes: F16C 33/6625 Controlling or conditioning the grease supply
• CPC Class Codes: F16C 33/6659 Details of supply of the liquid to the bearing, e.g. passages or nozzles
• CPC Class Codes: F16C 35/047 with a base plate substantially parallel to the axis of rotation, e.g. horizontally mounted pillow blocks
• CPC Class Codes: F16N 2200/20 Detecting water
• CPC Class Codes: F16N 2250/00 Measuring
• CPC Class Codes: F16N 2250/08 Temperature
• CPC Class Codes: F16N 2250/16 Number of revolutions, RPM
• CPC Class Codes: F16N 29/02 for influencing the supply of lubricant

Abstract

A method includes providing a bearing housing configured to house a bearing, the bearing housing enclosing a free volume for receiving lubricant, providing a quantity of the lubricant in the free volume, and providing a sensor configured to measure at least one parameter affecting a degradation rate at which the lubricant will degrade and to produce at least one output signal indicative of the measured at least one parameter. The method also includes providing a pump for pumping lubricant into the bearing housing, providing a controller configured to receive the at least one output signal from the sensor and configured to control the pump based the received at least one output signal, and controlling the pump based on a function of the received at least one output signal.

Claims

1. A method comprising:

providing a bearing housing configured to house a bearing, the bearing housing enclosing a free volume for receiving lubricant;

providing a quantity of the lubricant in the free volume;

providing a sensor configured to measure at least one parameter affecting a degradation rate at which the lubricant will degrade and to produce at least one output signal indicative of the measured at least one parameter;

providing a pump for pumping lubricant into the bearing housing;

providing a controller configured to receive the at least one output signal from the sensor and configured to control the pump based the received at least one output signal; and

controlling the pump based on a function of the received at least one output signal.

13. The method of claim 1, wherein the controller is configured to receive as an input a shaft speed signal indicative of a rotation speed of the shaft and to set a lubrication rate at which the pump dispenses lubricant as a first function of the shaft speed.

14. The method of claim 1, wherein the controller is configured to receive as an input a shaft speed signal indicative of a rotation speed of the shaft and a moisture signal indicative of a moisture level of the lubricant and to set a lubrication rate at which the pump dispenses lubricant as a first function of the shaft speed when the moisture level is below a second level and to set a lubrication rate at which the pump dispense lubricant as a second function of the shaft speed or independently of the shaft speed when the moisture level is at or above the second level.

15. The method of claim 1, wherein the controller is configured to receive as an input a shaft speed signal indicative of a rotation speed of the shaft and a lubricant temperature signal indicative of a temperature of the lubricant and to set a lubrication rate at which the pump dispenses lubricant as a first function of the shaft speed in response to a determination that the temperature is below a first level and to set the lubrication rate at which the pump dispenses lubricant as a second function of the shaft speed in response to a determination that the temperature is at or above the first level.

16. The method of claim 1, wherein the controller is configured to receive as an input a shaft speed signal indicative of a rotation speed of the shaft and a lubricant temperature signal indicative of a temperature of the lubricant and a moisture signal indicative of a moisture level of the lubricant and to set a lubrication rate at which the pump dispenses lubricant as a first function of the shaft speed in response to a determination that the temperature is below a first level and the moisture level is below a second level and to set the lubrication rate at which the pump dispenses lubricant as a second function of the shaft speed in response to a determination that the temperature is at or above the first level and the moisture level is below the second level and to set a lubrication rate as a third function of shaft speed or independently of the shaft speed in response to a determination that the moisture level is at or above the second level.

2. The method of claim al, including determining, based on the at least one measured parameter the degradation rate of the lubricant, wherein controlling the pump comprises causing the pump to pump lubricant into the bearing housing based on the determined degradation rate.

3. The method of claim 2, wherein the at least one parameter affecting a rate at which the lubricant will degrade comprises a property of the lubricant.

4. The method of claim 3, wherein the at least one parameter comprises lubricant temperature.

5. The method of claim 3, wherein the at least one parameter comprises a moisture content of the lubricant.

6. The method of claim 2, wherein the at least one parameter affecting a rate at which the lubricant will degrade comprises an operating state of the bearing.

7. The method of claim 2, wherein the at least one parameter affecting a rate at which the lubricant will degrade comprises a rotation speed of a shaft supported by the bearing.

8. The method of claim 2 wherein the sensor comprises a moisture sensor configured to continuously or periodically sense a moisture content of the lubricant and pumping the lubricant into the bearing housing at a first rate in response to a determination that the moisture content is below a first level and the pumping lubricant into the bearing housing at a second rate, greater than the first rate, in response to a determination that the moisture content is at or above the first level.

9. The method of claim 2, wherein the controller is configured to receive as an input a shaft speed signal indicative of a rotation speed of the shaft and to set a lubrication rate at which the pump dispenses lubricant as a first function of the shaft speed.

10. The method of claim 2, wherein the controller is configured to receive as an input a shaft speed signal indicative of a rotation speed of the shaft and a moisture signal indicative of a moisture level of the lubricant and to set a lubrication rate at which the pump dispenses lubricant as a first function of the shaft speed when the moisture level is below a second level and to set a lubrication interval at which the pump dispense lubricant as a second function of the shaft speed or independently of the shaft speed when the moisture level is at or above the second level.

11. The method of claim 2, wherein the controller is configured to receive as an input a shaft speed signal indicative of a rotation speed of the shaft and a lubricant temperature signal indicative of a temperature of the lubricant and to set a lubrication rate at which the pump dispenses lubricant as a first function of the shaft speed in response to a determination that the temperature is below a first level and to set the lubrication rate at which the pump dispenses lubricant as a second function of the shaft speed in response to a determination that the temperature is at or above the first level.

12. The method of claim 2, wherein the controller is configured to receive as an input a shaft speed signal indicative of a rotation speed of the shaft and a lubricant temperature signal indicative of a temperature of the lubricant and a moisture signal indicative of a moisture level of the lubricant and to set a lubrication rate at which the pump dispenses lubricant as a first function of the shaft speed in response to a determination that the temperature is below a first level and the moisture level is below a second level and to set the lubrication rate at which the pump dispenses lubricant as a second function of the shaft speed in response to a determination that the temperature is at or above the first level and the moisture level is below the second level and to set a lubrication rate as a third function of the shaft speed or independently of the shaft speed in response to a determination that the moisture level is at or above the second level.

17. A method comprising:

providing a bearing housing configured to house a bearing, the bearing housing enclosing a free volume for receiving lubricant;

placing the lubricant in the free volume;

providing a sensor configured to measure a moisture content of the lubricant and to produce at least one output signal indicative the measured moisture content;

providing a pump for pumping lubricant into the bearing housing;

providing a controller configured to receive the at least one output signal from the sensor, determine from the at least one output signal whether the moisture level is above or below a first level and control the pump based on the determined moisture level, and

pumping lubricant into the bearing housing at a first rate in response to a determination that the moisture content is below a first level and pumping lubricant into the bearing housing at a second rate, greater than the first rate, in response to a determination that the moisture content is at or above the first level.

18. The method of claim 17, wherein pumping lubricant into the bearing housing at the second rate comprises pumping lubricant into the housing at the second rate until the moisture content of the lubricant falls below the first level.