Lubricating system for a bearing, bearing including a lubricating system, and method for lubricating a bearing

Patent metadata

Field	Value
Publication number	US-10088100-B2
Application number	US-201514638454-A
Country	US
Kind code	B2
Filing date	Mar 4, 2015
Priority date	Mar 6, 2014
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A lubricating system for a bearing includes a lubricant supplying system having a first pumping device configured to introduce a first quantity of lubricant into the bearing, a lubricant disposal system including a second pumping device configured to remove a second quantity of lubricant from the bearing, and a controlling device configured to activate the first pumping device and the second pumping device interdependently with each other.

First claim

What is claimed is:

1. A lubricating system for a bearing, comprising:
a lubricant supplying system including a first pumping device configured to introduce a first quantity of lubricant into the bearing;
a lubricant disposal system including a second pumping device configured to remove a second quantity of lubricant from the bearing;
a controlling device configured to activate the first pumping device and the second pumping device interdependently with each other, wherein the controlling device is adaptable to receive information from the lubricant supplying system and the lubricant disposal system to:
(i) analyze a flow behavior, an age, and a degree of contamination of lubricant, and
(ii) adjust quantity and frequency of the first quantity of lubricant introduced into the bearing and the second quantity of lubricant removed from the bearing based on a measured lubricant quality;

a first measuring device communicatively coupled to the controlling device and configured to determine at least one of a volume or a mass of the first quantity of lubricant introduced into the bearing, wherein the first measuring device additionally comprises a first sensor configured to determine whether the first quantity of lubricant contains gas inclusions;
a second measuring device communicatively coupled to the controlling device and configured to determine at least one of a volume or a mass of the second quantity of lubricant removed from the bearing, wherein the second measuring device additionally comprises a second sensor configured to determine whether the second quantity of lubricant contains gas inclusions;
a lubricant analyzing device for determining a state of the second quantity of lubricant removed from the bearing, wherein the state of the second quantity of lubricant is based on an age of lubricant, a flow behavior of lubricant, a contamination level of lubricant, or a degree of the consumption of lubricant; and
a bearing analyzing device positioned between the controlling device and the bearing for receiving information about a state of the bearing and transmitting the information to the controlling device, wherein the controlling device is configured, based on the state of the bearing, to make an adjustment of at least one of a quantity of supply of lubricant, a quantity of removal of lubricant, a frequency of supply of lubricant, or a frequency of removal of lubricant.

2. The lubricating system according to claim 1 , wherein the controlling device is configured to activate the first and the second pumping devices in short intervals to supply a plurality of partial quantities of lubricant in a plurality of partial filling processes by the first pumping device, and to remove a plurality of partial quantities of lubricant by a plurality of partial emptying processes by the second pumping device so that a total quantity of lubricant in the bearing, which is provided for a defined period of operation, is at least partially replaced during the defined period of operation.

3. The lubricating system according to claim 2 , wherein the controlling device is configured to control the second pumping device such that the second quantity of lubricant corresponds to the first quantity of lubricant so that a total quantity of lubricant in the bearing is substantially constant.

4. The lubricating system according to claim 1 , wherein the bearing analyzing device is further configured to determine the state of the bearing by determining a sound volume of the bearing or vibrations of the bearing.

5. The lubricating system according to claim 1 , wherein the controlling device is configured to activate the first pumping device in short intervals to supply a plurality of partial quantities of lubricant in a plurality of partial filling processes, and to activate the second pumping device in a plurality of short intervals to remove a plurality of partial quantities of lubricant by a plurality of partial emptying processes.

6. The lubricating system according to claim 1 , wherein the controlling device is configured to operate the first pumping device and the second pumping device simultaneously in order to maintain a substantially constant quantity of lubricant in the bearing.

7. The lubricating system according to claim 1 , further including the second sensor configured to determine whether gas is present in the second quantity of lubricant.

8. A method for lubricating a bearing comprising:
activating a pumping device of a lubricant supplying system to introduce a first quantity of lubricant into the bearing; and
activating a pumping device of a lubricant disposal system to remove a second quantity of lubricant from the bearing,
wherein the pumping device of the lubricant supplying system and the pumping device of the lubricant disposal system are activated interdependently with each other by a controlling device, wherein the controlling device receives information from the lubricant supplying system and the lubricant disposal system to:
(i) analyze a flow behavior, an age, and a degree of contamination of lubricant, and
(ii) adjust quantity and frequency of the first quantity of lubricant introduced into the bearing and the second quantity of lubricant removed from the bearing based on a measured lubricant quality;

activating a first measuring device communicatively coupled to the controlling device to determine at least one of a volume or a mass of the first quantity of lubricant introduced into the bearing, wherein the first measuring device additionally comprises a first sensor to determine whether the first quantity of lubricant contains gas inclusions;
activating a second measuring device communicatively coupled to the controlling device to determine at least one of a volume or a mass of the second quantity of lubricant removed from the bearing, wherein the second measuring device additionally comprises a second sensor to determine whether the second quantity of lubricant contains gas inclusions;
activating a lubricant analyzing device to determine a state of the second quantity of lubricant removed from the bearing, wherein the state of the second quantity of lubricant is based on an age of lubricant, a flow behavior of lubricant, a contamination level of lubricant, or a degree of the consumption of lubricant; and
activating a bearing analyzing device positioned between the controlling device and the bearing to receive information about a state of the bearing and transmit the information to the controlling device, wherein the controlling device, based on the state of the bearing, makes an adjustment of at least one of a quantity of supply of lubricant, a quantity of removal of lubricant, a frequency of supply of lubricant, or a frequency of removal of lubricant.

9. The method of claim 8 wherein activating the pumping device of the lubricant supplying system and the pumping device of the lubricant disposal system interdependently with each other comprises operating the pumping device of the lubricant supplying system and the pumping device of the lubricant disposal system simultaneously to maintain a substantially constant quantity of lubricant in the bearing.

10. The method of claim 8 including detecting gas inclusions in the second quantity of lubricant and changing the first quantity of lubricant when gas such as air bubbles are detected.

Assignees

• Kreutzkaemper Juergen
• Schuermann Stefan
• Teupner Martin
• Ullmann Johannes
• Skf Ab
• SKF LUBRICATION SYSTEMS GmbH

Inventors

• Kreutzkaemper Juergen
• Schuermann Stefan
• Teupner Martin
• Ullmann Johannes

Classifications

• F16C33/6625 Primary

  Controlling or conditioning the grease supply · CPC title

• F16C33/6685

  Details of collecting or draining, e.g. returning the liquid to a sump · CPC title

• F16C33/105

  Conditioning, e.g. metering, cooling, filtering · CPC title

• F16C33/102

  with grease as lubricant · CPC title

• F16N29/02 Primary

  for influencing the supply of lubricant · CPC title