WO2015193110A1 - Cage for a roller bearing - Google Patents

Cage for a roller bearing Download PDF

Info

Publication number
WO2015193110A1
WO2015193110A1 PCT/EP2015/062358 EP2015062358W WO2015193110A1 WO 2015193110 A1 WO2015193110 A1 WO 2015193110A1 EP 2015062358 W EP2015062358 W EP 2015062358W WO 2015193110 A1 WO2015193110 A1 WO 2015193110A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring
segments
cage
ring element
cage according
Prior art date
Application number
PCT/EP2015/062358
Other languages
French (fr)
Inventor
Gerrit-Jan Dop
Original Assignee
Aktiebolaget Skf
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aktiebolaget Skf filed Critical Aktiebolaget Skf
Publication of WO2015193110A1 publication Critical patent/WO2015193110A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/50—Cages for rollers or needles formed of interconnected members, e.g. chains
    • F16C33/502—Cages for rollers or needles formed of interconnected members, e.g. chains formed of arcuate segments retaining one or more rollers or needles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4664—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages with more than three parts, e.g. two end rings connected by individual stays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/70—Positive connections with complementary interlocking parts
    • F16C2226/76—Positive connections with complementary interlocking parts with tongue and groove or key and slot
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/10—Application independent of particular apparatuses related to size
    • F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/31—Wind motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4641—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages comprising two annular parts joined together
    • F16C33/4652—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages comprising two annular parts joined together made from plastic, e.g. two injection moulded parts joined by a snap fit

Definitions

  • the invention relates to a cage for a roller bearing, comprising a ring structure with a plurality of receiving pockets for rolling elements.
  • Cages of the generic kind are well known in the art. In many cases cages made from plastic material are used. For producing a cage from plastic material a respective mould is necessary. Moulds for cages for large size bearings are very expensive in their production in the case that the cage has to be made as one piece. This is the normal case as only then the required strength is obtained.
  • a s o l u t i o n according to the invention is characterized in that the ring structure of the cage comprises two ring elements, wherein a first ring element is arranged in a radial inner region of the ring structure and a second ring element is arranged concentrically to the first ring element and in a radial outer region of the ring structure, wherein both ring elements comprise of a plurality of ring segments, wherein each ring segment extends along a part of the circumference of the ring structure.
  • the ring segments of the first ring element and the ring segments of the second ring element are connected by means of a form-fitting connection. This can be done in a manner such that the form-fitting connection establishes an undercut between a ring segment of the first ring element and a ring segment of the second ring element in radial direction.
  • a ring segment of the first ring element can have at least one protrusion in axial direction which interacts with a groove in a ring segment of the second ring element.
  • a ring segment of the second ring element can have at least one protrusion in axial direction which interacts with a groove in a ring segment of the first ring element.
  • a preferred embodiment of the invention proposes that two protrusions and two grooves are arranged in the axial end regions of the ring segments of the first ring element and the ring segments of the second ring element respectively.
  • two adjoining ring segments contact each other at a contact area, wherein the contact areas of the first ring element and of the second ring ele- ment are offset in circumferential direction.
  • the contact areas of the first ring elements are flat.
  • the perpendicular on the contact area is directed in tangential direction of the cage.
  • a preferred embodiment of the invention proposes that all ring segments of the first ring element have an identical shape. Also, all ring segments of the second ring element can have an identical shape. This allows a specific cost- efficient production of the segments.
  • the first and second ring elements are preferably formed by two, three, four or five ring segments.
  • the first and second ring elements are preferably arranged such their face sides lie flush against each other.
  • the cage is preferably a cylindrical roller bearing cage or a taper roller bearing cage.
  • the idea according to the present invention is to produce a cage of a roller bearing consisting of a number of identical pieces.
  • the pieces are preferably clicked together one on top of each other.
  • a kind of dove-tail can take care of the clicking, i.e. for the form-fitting connection of the cage parts which are arranged one above the other.
  • the two layers (i.e. the first and the second ring element) that make up the cage are kept together by the rolling elements.
  • the rolling elements When the rolling elements are inserted into the receiving pockets of the cage, they prevent the inner cage- ring (first ring element) to move relatively the outer cage ring (second ring element) in circumferential direction.
  • the proposed cages can be employed with specific benefits in the case of large size bearing, e. g. in the field of wind energy plants. Cylindrical roller bearings as well as taper roller bearings are preferred applications.
  • the ring segments in the radial inner part (first ring element) and in the radial outer part (second ring element) are rotated in circumferential direction relatively to another so that the inner and outer contact surfaces between the single segments are offset to another.
  • the segments in the radial outer ring element are preferably snapped over the inner segments.
  • rollers in the pockets are finally locking the inner ring elements to the outer ring element in circumferential direction.
  • the drawing shows an embodiment of the invention.
  • Fig. 1 shows a perspective view of a cage of a cylindrical roller bearing and Fig. 2 shows a perspective sectional view of a part of the cage according to figure 1.
  • a cage 1 is depicted, which is a cylindrical roller bearing cage in the present case.
  • the cage 1 has a ring structure 2 in which receiving pockets 3 are arranged.
  • roller elements (not depicted) are placed before the cage 1 with the roller elements are placed between respective outer and inner bearing rings.
  • the ring structure 2 of the cage 1 consists of two ring elements 4 and 5, namely of a first ring element 4 which is arranged in a radial inner region of the ring structure 2 and of a second ring element 5 which is arranged concentrically to the first ring element 4 and in a radial outer region of the ring structure 2.
  • Both ring elements 4 and 5 comprise in the present case four ring segments 4', 4", 4"', 4" “ and 5', 5", 5"', 5"" respectively.
  • Each ring segment 4', 4", 4"', 4"" and 5', 5", 5 “', 5" " respectively extends along a defined part of the circumference of the ring structure 2, i.e. along 90° of the circumference in the depicted embodiment.
  • the single ring segments 4', 4", 4" ', 4"" and 5', 5", 5" ', 5"" respectively abut at contact areas 6 and 7.
  • the contact areas 6, 7 are planar in the present case and their perpendicular P (see figure 2) is oriented in the tangential direc- tion.
  • a contact area 6 can be seen, wherein the perpendicular P onto the area 6 (as well as on the area 7) is shown.
  • connection between the radial inner ring segments 4', 4", 4"', 4"" and the radial outer ring segments 5', 5", 5' ", 5"" is established by means of a form-fitting connection 8, 9.
  • This form-fitting connection - see figure 2 - is realized by a protrusion 8 (extending in axial direction a) on both axial end sides of the ring segments and a ring groove 9 in which the protrusion 8 can snap in to fix the radial outer ring segments to the radial inner ring segments.
  • the ring segments 4', 4", 4' ", 4"" on the one hand and the ring segments 5', 5", 5' ", 5"” on the other hand form complete ring structures.
  • the contact areas 6 and 7 between two adjacent ring segments 4', 4", 4"', 4" “ and 5', 5", 5"', 5" " respectively are offset in circumferential direction.
  • This establishes a rigid structure of the ring structure 2. That is, the contact areas 6, 7 of the first ring element 4 and of the second ring element 5 are at different circumferential positions.
  • the radial inner ring segments 4', 4", 4" ', 4" " on the one hand and the radial outer ring segments 5', 5", 5" ', 5"" on the other are all identical in shape. This allows a cost-efficient production of the single segments which are made preferably from plastic material in a respective mould.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The invention relates to a cage (1) for a roller bearing, comprising a ring structure (2) with a plurality of receiving pockets (3) for rolling elements. To allow a cost efficient production of such a cage specifically for large size bearings the invention is characterized in that the ring structure (2) comprises two ring elements (4, 5), wherein a first ring element (4) is arranged in a radial inner region of the ring structure (2) and a second ring element (5) is arranged concentrically to the first ring element (4) and in a radialouter region of the ring structure (2), wherein both ring elements (4, 5) comprise of a plurality of ring segments (4', 4'', 4''', 4''''; 5', 5'', 5''', 5''''), wherein each ring segment (4', 4'', 4''', 4''''; 5', 5'', 5''', 5'''') extends along a part of the circumference of the ring structure (2).The ring segments (4', 4'', 4''', 4'''') of the first ring element (4) and the ring segments (5', 5'', 5''', 5'''') of the second ring element (5) are connected by means of a form-fitting connection (8, 9), wherein the form-fitting connection (8, 9) establishes an undercut be- tween a ring segment (4', 4'', 4''', 4'''') of the first ring element (4) and a ring segment (5', 5'', 5''', 5'''') of the second ring element (5) in radial direction (r).

Description

Cage for a roller bearing
Technical Field
The invention relates to a cage for a roller bearing, comprising a ring structure with a plurality of receiving pockets for rolling elements.
Background
Cages of the generic kind are well known in the art. In many cases cages made from plastic material are used. For producing a cage from plastic material a respective mould is necessary. Moulds for cages for large size bearings are very expensive in their production in the case that the cage has to be made as one piece. This is the normal case as only then the required strength is obtained.
Thus, it is an o b j e c t of the present invention to propose a cage for a roller bearing which allows a more cost efficient production specifically in the case that the cage has bigger dimensions, e. g. in the case of a roller bearing for a large size bearing. Those bearings are specifically required for applications in wind turbines. The cage should have a high rigidity and stability. Summary of the invention
A s o l u t i o n according to the invention is characterized in that the ring structure of the cage comprises two ring elements, wherein a first ring element is arranged in a radial inner region of the ring structure and a second ring element is arranged concentrically to the first ring element and in a radial outer region of the ring structure, wherein both ring elements comprise of a plurality of ring segments, wherein each ring segment extends along a part of the circumference of the ring structure.
The ring segments of the first ring element and the ring segments of the second ring element are connected by means of a form-fitting connection. This can be done in a manner such that the form-fitting connection establishes an undercut between a ring segment of the first ring element and a ring segment of the second ring element in radial direction.
Preferably, a ring segment of the first ring element can have at least one protrusion in axial direction which interacts with a groove in a ring segment of the second ring element. Alternatively, a ring segment of the second ring element can have at least one protrusion in axial direction which interacts with a groove in a ring segment of the first ring element. A preferred embodiment of the invention proposes that two protrusions and two grooves are arranged in the axial end regions of the ring segments of the first ring element and the ring segments of the second ring element respectively.
Preferably, two adjoining ring segments contact each other at a contact area, wherein the contact areas of the first ring element and of the second ring ele- ment are offset in circumferential direction. In this case it is preferred that the contact areas of the first ring elements are flat. Preferably, the perpendicular on the contact area is directed in tangential direction of the cage.
A preferred embodiment of the invention proposes that all ring segments of the first ring element have an identical shape. Also, all ring segments of the second ring element can have an identical shape. This allows a specific cost- efficient production of the segments.
The first and second ring elements are preferably formed by two, three, four or five ring segments.
The first and second ring elements are preferably arranged such their face sides lie flush against each other.
The cage is preferably a cylindrical roller bearing cage or a taper roller bearing cage.
Thus, the idea according to the present invention is to produce a cage of a roller bearing consisting of a number of identical pieces. The pieces are preferably clicked together one on top of each other. A kind of dove-tail can take care of the clicking, i.e. for the form-fitting connection of the cage parts which are arranged one above the other.
The two layers (i.e. the first and the second ring element) that make up the cage are kept together by the rolling elements. When the rolling elements are inserted into the receiving pockets of the cage, they prevent the inner cage- ring (first ring element) to move relatively the outer cage ring (second ring element) in circumferential direction. The proposed cages can be employed with specific benefits in the case of large size bearing, e. g. in the field of wind energy plants. Cylindrical roller bearings as well as taper roller bearings are preferred applications.
Due to the use of a plurality of identical segments which form the first and the second ring element it is possible to obtain low manufacturing costs.
Thus, the ring segments in the radial inner part (first ring element) and in the radial outer part (second ring element) are rotated in circumferential direction relatively to another so that the inner and outer contact surfaces between the single segments are offset to another.
The segments in the radial outer ring element are preferably snapped over the inner segments.
The rollers in the pockets are finally locking the inner ring elements to the outer ring element in circumferential direction.
Brief description of the drawings
The drawing shows an embodiment of the invention.
Fig. 1 shows a perspective view of a cage of a cylindrical roller bearing and Fig. 2 shows a perspective sectional view of a part of the cage according to figure 1.
Detailed description of the invention
In the figures a cage 1 is depicted, which is a cylindrical roller bearing cage in the present case. The cage 1 has a ring structure 2 in which receiving pockets 3 are arranged. In the receiving pockets 3 roller elements (not depicted) are placed before the cage 1 with the roller elements are placed between respective outer and inner bearing rings.
The ring structure 2 of the cage 1 consists of two ring elements 4 and 5, namely of a first ring element 4 which is arranged in a radial inner region of the ring structure 2 and of a second ring element 5 which is arranged concentrically to the first ring element 4 and in a radial outer region of the ring structure 2.
Both ring elements 4 and 5 comprise in the present case four ring segments 4', 4", 4"', 4" " and 5', 5", 5"', 5"" respectively. Each ring segment 4', 4", 4"', 4"" and 5', 5", 5 "', 5" " respectively extends along a defined part of the circumference of the ring structure 2, i.e. along 90° of the circumference in the depicted embodiment.
The single ring segments 4', 4", 4" ', 4"" and 5', 5", 5" ', 5"" respectively abut at contact areas 6 and 7. The contact areas 6, 7 are planar in the present case and their perpendicular P (see figure 2) is oriented in the tangential direc- tion. In figure 2 a contact area 6 can be seen, wherein the perpendicular P onto the area 6 (as well as on the area 7) is shown.
The connection between the radial inner ring segments 4', 4", 4"', 4"" and the radial outer ring segments 5', 5", 5' ", 5"" is established by means of a form-fitting connection 8, 9. This form-fitting connection - see figure 2 - is realized by a protrusion 8 (extending in axial direction a) on both axial end sides of the ring segments and a ring groove 9 in which the protrusion 8 can snap in to fix the radial outer ring segments to the radial inner ring segments.
The ring segments 4', 4", 4' ", 4"" on the one hand and the ring segments 5', 5", 5' ", 5"" on the other hand form complete ring structures.
As can be seen from figure 1 the contact areas 6 and 7 between two adjacent ring segments 4', 4", 4"', 4" " and 5', 5", 5"', 5" " respectively are offset in circumferential direction. This establishes a rigid structure of the ring structure 2. That is, the contact areas 6, 7 of the first ring element 4 and of the second ring element 5 are at different circumferential positions.
The radial inner ring segments 4', 4", 4" ', 4" " on the one hand and the radial outer ring segments 5', 5", 5" ', 5"" on the other are all identical in shape. This allows a cost-efficient production of the single segments which are made preferably from plastic material in a respective mould. Reference Numerals:
1 Cage
2 Ring structure
3 Receiving pocket
4 First ring element 4' Ring segment
4" Ring segment
4"' Ring segment
4"" Ring segment
5 Second ring element 5 ' Ring segment
5 ' ' Ring segment
5' " Ring segment
5"" Ring segment
6 Contact area
7 Contact area
8, 9 Form-fitting connection
8 Protrusion
9 Groove r Radial direction a Axial direction
P Perpendicular

Claims

Aktiebolaget SKF 2014P00099 WO Patent Claims;
1. Cage (1) for a roller bearing, comprising a ring structure (2) with a plurality of receiving pockets (3) for rolling elements, wherein the ring structure (2) comprises two ring elements (4, 5), wherein a first ring element (4) is arranged in a radial inner region of the ring structure (2) and a second ring element (5) is arranged concentrically to the first ring element (4) and in a radial outer region of the ring structure (2), wherein both ring elements (4, 5) comprise of a plurality of ring segments (4', 4", 4"', 4""; 5', 5", 5' ", 5 ""), wherein each ring segment (4', 4", 4"', 4""; 5', 5", 5' ", 5" ") extends along a part of the circumference of the ring structure (2), characterized in that the ring segments (4 ', 4", 4"', 4" ") of the first ring element (4) and the ring segments (5 ', 5", 5' ", 5" ") of the second ring element (5) are connected by means of a form-fitting connection (8, 9), wherein the form- fitting connection (8, 9) establishes an undercut between a ring segment (4', 4", 4"', 4" ") of the first ring element (4) and a ring segment (5', 5", 5"', 5" ") of the second ring element (5) in radial direction (r).
2. Cage according to claim 1, characterized in that two adjoining ring segments (4', 4", 4"', 4""; 5', 5", 5' ", 5" ") contact each other at a con- tact area (6, 7), wherein the contact areas (6, 7) of the first ring element (4) and of the second ring element (5) are offset in circumferential direction.
3. Cage according to claim 2, characterized in that the contact areas (6, 7) of the first ring elements (4, 5) are flat.
4. Cage according to claim 3, characterized in that the perpendicular (P) on the contact area (6, 7) is directed in tangential direction.
5. Cage according to one of claims 1 to 4, characterized in that all ring segments (4', 4", 4' ", 4" ") of the first ring element (4) have an identical shape.
6. Cage according to one of claims 1 to 5, characterized in that all ring segments (5', 5", 5' ", 5" ") of the second ring element (5) have an identical shape.
7. Cage according to one of claims 1 to 6, characterized in that a ring segment (4', 4", 4"', 4" ") of the first ring element (4) has at least one protrusion (8) in axial direction (a) which interacts with a groove (9) in a ring segment (5 ', 5", 5" ', 5"") of the second ring element (5).
8. Cage according to one of claims 1 to 6, characterized in that a ring segment (5 ', 5 ", 5 "', 5" ") of the second ring element (5) has at least one protrusion (8) in axial direction (a) which interacts with a groove (9) in a ring segment (4 ', 4", 4"', 4"") of the first ring element (4).
9. Cage according to claim 7 or 8, characterized in that two protrusions (8) and two grooves (9) are arranged in the axial end regions of the ring segments (4', 4", 4"', 4"") of the first ring element (4) and the ring segments (5 ', 5", 5" ', 5"") of the second ring element (5) respectively.
10. Cage according to one of claims 1 to 9, characterized in that the first and second ring elements (4, 5) are formed by two, three, four or five ring segments (4', 4", 4"', 4""; 5', 5", 5'", 5"")·
11. Cage according to one of claims 1 to 10, characterized in that the first and second ring elements (4, 5) flush in their face side.
12. Cage according to one of claims 1 to 11, characterized in that it is a cylindrical roller bearing cage.
13. Cage according to one of claims 1 to 11, characterized in that it is a taper roller bearing cage.
PCT/EP2015/062358 2014-06-17 2015-06-03 Cage for a roller bearing WO2015193110A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1410786.6 2014-06-17
GBGB1410786.6A GB201410786D0 (en) 2014-06-17 2014-06-17 Cage for a roller bearing

Publications (1)

Publication Number Publication Date
WO2015193110A1 true WO2015193110A1 (en) 2015-12-23

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ID=51266728

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/062358 WO2015193110A1 (en) 2014-06-17 2015-06-03 Cage for a roller bearing

Country Status (2)

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GB (1) GB201410786D0 (en)
WO (1) WO2015193110A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019116528A1 (en) * 2019-06-18 2020-12-24 Metallbau Glawion GmbH Ball cage formed from segments, method for producing a ball cage from segments and tool for building the ball cage from segments
USRE49731E1 (en) 2016-11-23 2023-11-21 Swell Energy Inc. Method and apparatus for facilitating the operation of an on-site energy storage system to co-optimize battery dispatch

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4229136C1 (en) * 1992-09-01 1994-03-03 Krupp Ag Hoesch Krupp Ball- or roller bearing cage - incorporates separate cage segments articulated together on square or circular-section wires
JP2011007247A (en) * 2009-06-25 2011-01-13 Ntn Corp Rolling bearing and wind power generator using the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4229136C1 (en) * 1992-09-01 1994-03-03 Krupp Ag Hoesch Krupp Ball- or roller bearing cage - incorporates separate cage segments articulated together on square or circular-section wires
JP2011007247A (en) * 2009-06-25 2011-01-13 Ntn Corp Rolling bearing and wind power generator using the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE49731E1 (en) 2016-11-23 2023-11-21 Swell Energy Inc. Method and apparatus for facilitating the operation of an on-site energy storage system to co-optimize battery dispatch
DE102019116528A1 (en) * 2019-06-18 2020-12-24 Metallbau Glawion GmbH Ball cage formed from segments, method for producing a ball cage from segments and tool for building the ball cage from segments
DE102019116528B4 (en) 2019-06-18 2023-11-09 Metallbau Glawion GmbH Ball cage formed from segments

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