CN1204767A - Three-D bearing load sensor - Google Patents
Three-D bearing load sensor Download PDFInfo
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- CN1204767A CN1204767A CN 97108613 CN97108613A CN1204767A CN 1204767 A CN1204767 A CN 1204767A CN 97108613 CN97108613 CN 97108613 CN 97108613 A CN97108613 A CN 97108613A CN 1204767 A CN1204767 A CN 1204767A
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- elastic body
- blind holes
- blind
- short beam
- bearing
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Abstract
A 3-D bearing load sensor for monitoring working conditions and diagnosing failure of large rotary machinery features that the resistance strain foils are stuck in the centers of horizontal split line on bottom of three blind holes in 45 deg. and 135 deg. directions and a full-bridge circuit is formed with them, which is just a sensor for longitudinal and transverse forces of bearing. Its advantages are simple structure, high precision and no infulence on performance of bearing.
Description
The invention belongs to plant equipment operation technique field, further belong to the special-purpose force cell of on-line monitoring equipment bearing load in the large rotating machinery operating condition monitoring and fault diagnosis technical field.
At present, in the direct method of testing of large turbo-type generator group bearing load a kind of bearings force method is arranged.It is to utilize the force cell that is installed between bearing and the bearing seat directly to measure the method for testing of bearing load, and the gordian technique of this method is a force cell.Because the specific (special) requirements of large turbo-type generator group bearing arrangement, all kinds of dynamometry of Xiao Shouing and LOAD CELLS all can not be applied to monitor when vertical, horizontal and axial three directions of its bearing are loaded in the market.
The object of the present invention is to provide and a kind ofly monitor large turbo-type generator group bearing and other similar bearing simultaneously vertically, laterally and the force cell of axial load.This sensor itself is exactly a part of bearing arrangement, and is simple in structure, and the precision height is easy for installation, do not influence the runnability of bearing.
The present invention includes elastic body, foil gauge and end cover, it is characterized in that: described elastic body top and bottom are rectangular planes, and the elastic body front-back also is the plane, and the elastic body symmetria bilateralis is processed with two platforms, and two through holes are arranged respectively on each platform; Elastic body bottom symmetry has the long narrow straight joint of each crooked three 90 degree of both sides, the direct through groove of this straight joint and elastic body top plan both sides and elastic body two sides make elastic body form four short beams of symmetry, between narrow straight joint and top direct through groove, have four corresponding in twos blind holes on two short beam centers, midpoint area difference adhering resistance strain sheets on the separated time in these four blind-hole bottom planar horizontal, and composition full-bridge circuit, to load, pairing two blind holes are separated by the same diameter blind hole of elastic body two upper lateral parts respectively on these two short beams in order to test bearing z; Before two short beams that narrow straight joint two sides and elastic body two sides form, also have corresponding in twos blind hole on (back) face center, midpoint area difference adhering resistance strain sheets on the separated time in these four blind-hole bottom planar horizontal, and composition full-bridge circuit, in order to test bearing x to load, pairing two blind holes are separated by the same diameter blind hole of elastic body outer lower portion respectively on each short beam, two resistance strain gages are respectively pasted in two blind-hole bottom planar central zones in this outer lower portion respectively, and the composition full-bridge circuit, in order to test bearing y to load.
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is an one-piece construction synoptic diagram of the present invention.
Fig. 2 is a front elevation of the present invention.
Fig. 3 is a left view of the present invention.
The elastic body 1 of sensor is formed by block of metal materials processing, its top 2 and bottom 3 are rectangular planes, top plan has four symmetrical internal thread holes 4 that connect usefulness with the bearing shell mutually, elastic body 1 front 5 also is a symmetrical plane with back 6, elastic body 1 outside is symmetrily processed with two platforms 7, two through holes 8 are arranged respectively on each platform, with bolt sensor is fixed on the bearing seat by these two through holes; Elastic body 1 bottom symmetry has the long narrow straight joints 9 at three 90 degree of both sides bending, and the direct through groove 10 of this straight joint and elastic body 1 top plan both sides makes elastic body form two top short beams 11 and two side short beams 12 of symmetry; On two top short beam 11 centers, have four corresponding in twos top short beam blind holes 13,45 ° and 135 ° directions difference of midpoint area adhering resistance strain sheets on the separated time in these four top short beam blind hole 13 bottom planar horizontal, and composition full-bridge circuit, in order to test bearing z to load, pairing two blind holes 13 are separated by the same diameter upper blind bore 15 on the elastic body side 14 respectively on each top short beam 11, and the circle central axis of these four top short beam blind holes 13 and two side upper blind bore 15 is in same surface level; On the front 5 of two side short beams 12 and 6 centers, back, also have two corresponding blind holes 16,45 ° and 135 ° directions difference of midpoint area adhering resistance strain sheets on the separated time in the planar horizontal of the bottom of these four blind holes 16, and the composition full-bridge circuit, in order to test bearing x to load; Pairing two blind holes 16 are separated by the same diameter blind hole 17 of its side respectively on two side short beam front-backs, 45 ° and 135 ° of directions are respectively pasted two resistance strain gages in two blind holes, 17 bottom planar central zone, and composition full-bridge circuit, to load, the circle central axis of these four blind holes 16 and two blind holes 17 is also in same surface level in order to test bearing y.This structure is whole to be symmetrical.
The present invention is the direct test to bearing load, rather than the reckoning value under many assumed conditions, so can obtain higher measuring accuracy and confidence level, can realize large turbo-type generator group bearing load on-line monitoring easily.Sensor itself is exactly a part of bearing arrangement, does not change the structure of bearing, and is easy for installation, adaptability is strong, does not influence the runnability of bearing.Sensor is shearing sensor, and the power phase mutual interference of three directions is very little, and lateral force resistance is strong, precision is high, rigidity is big, and simple in structure, is easy to sealing.
Claims (2)
1. three-D bearing load sensor comprises an elastic body 1, and its top 2 and bottom 3 are rectangular planes, and elastic body 1 front 5 also is a symmetrical plane with back 6, and elastic body 1 outside is symmetrily processed with two platforms 7.Feature of the present invention is, elastic body 1 bottom symmetry have one on both sides the long narrow straight joints 9 of crooked three 90 degree, the direct through groove 10 of this straight joint and elastic body 1 top plan both sides makes elastic body form symmetrical two top short beams 11 and two side short beams 12; On two top short beam 11 centers, have four corresponding in twos top short beam blind holes 13,45 ° and 135 ° directions difference of midpoint area adhering resistance strain sheets on the separated time in these four top short beam blind hole 13 bottom planar horizontal, and composition full-bridge circuit, pairing two blind holes 13 are separated by the same diameter upper blind bore 15 on the elastic body side 14 respectively on each top short beam 11, and the circle central axis of these four top short beam blind holes 13 and two side upper blind bore 15 is in same surface level; On the front 5 of two side short beams 12 and 6 centers, back, also have two corresponding blind holes 16,45 ° and 135 ° directions difference of midpoint area adhering resistance strain sheets on the separated time in the planar horizontal of the bottom of these four blind holes 16, and composition full-bridge circuit, pairing two blind holes 16 are separated by the same diameter blind hole 17 of its side respectively on two side short beam front-backs, 45 ° and 135 ° of directions are respectively pasted two resistance strain gages in two blind holes, 17 bottom planar central zone, and the composition full-bridge circuit.
2. three-D bearing load sensor according to claim 1, the circle central axis that it is characterized in that said blind hole 16 and blind hole 17 is in same surface level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97108613 CN1204767A (en) | 1997-07-08 | 1997-07-08 | Three-D bearing load sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97108613 CN1204767A (en) | 1997-07-08 | 1997-07-08 | Three-D bearing load sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1204767A true CN1204767A (en) | 1999-01-13 |
Family
ID=5170557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97108613 Pending CN1204767A (en) | 1997-07-08 | 1997-07-08 | Three-D bearing load sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1204767A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100578180C (en) * | 2003-10-29 | 2010-01-06 | Skf公司 | The combination of bearing housing and load measuring plate |
| CN102004012A (en) * | 2010-10-29 | 2011-04-06 | 华北电力大学 | Real-time monitoring method for generator unit shafting rotor bearing load |
| CN102267069A (en) * | 2011-05-06 | 2011-12-07 | 南京航空航天大学 | Test platform of three-dimensional dynamic force during super-high-rotating-speed cutting |
| CN102338675A (en) * | 2011-08-09 | 2012-02-01 | 东南大学 | Three-dimensional force sensor |
| CN101946167B (en) * | 2008-02-15 | 2012-09-26 | Ntn株式会社 | Sensor-integrated bearing for wheel |
| CN101868706B (en) * | 2007-11-27 | 2013-08-28 | Ntn株式会社 | Sensor-equipped bearing for wheel |
| CN104614112A (en) * | 2015-02-02 | 2015-05-13 | 北京理工大学 | Combined high-accuracy three-axis force sensor |
| CN105588669A (en) * | 2015-12-11 | 2016-05-18 | 广西柳工机械股份有限公司 | Shaft pin-type three-way force-measuring sensor |
| CN108139288A (en) * | 2016-08-09 | 2018-06-08 | 三角力量管理株式会社 | Force sensor |
| CN114846305A (en) * | 2019-12-19 | 2022-08-02 | L.C.有限责任公司 | Load sensor for metal silo |
-
1997
- 1997-07-08 CN CN 97108613 patent/CN1204767A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100578180C (en) * | 2003-10-29 | 2010-01-06 | Skf公司 | The combination of bearing housing and load measuring plate |
| CN101868706B (en) * | 2007-11-27 | 2013-08-28 | Ntn株式会社 | Sensor-equipped bearing for wheel |
| CN101946167B (en) * | 2008-02-15 | 2012-09-26 | Ntn株式会社 | Sensor-integrated bearing for wheel |
| CN102004012A (en) * | 2010-10-29 | 2011-04-06 | 华北电力大学 | Real-time monitoring method for generator unit shafting rotor bearing load |
| CN102267069A (en) * | 2011-05-06 | 2011-12-07 | 南京航空航天大学 | Test platform of three-dimensional dynamic force during super-high-rotating-speed cutting |
| CN102338675A (en) * | 2011-08-09 | 2012-02-01 | 东南大学 | Three-dimensional force sensor |
| CN104614112A (en) * | 2015-02-02 | 2015-05-13 | 北京理工大学 | Combined high-accuracy three-axis force sensor |
| CN104614112B (en) * | 2015-02-02 | 2017-02-22 | 北京理工大学 | Combined high-accuracy three-axis force sensor |
| CN105588669A (en) * | 2015-12-11 | 2016-05-18 | 广西柳工机械股份有限公司 | Shaft pin-type three-way force-measuring sensor |
| CN105588669B (en) * | 2015-12-11 | 2021-03-16 | 广西柳工机械股份有限公司 | Axle pin type three-way force cell sensor |
| CN108139288A (en) * | 2016-08-09 | 2018-06-08 | 三角力量管理株式会社 | Force sensor |
| US10564059B2 (en) | 2016-08-09 | 2020-02-18 | Tri-Force Management Corporation | Force sensor |
| CN108139288B (en) * | 2016-08-09 | 2020-07-07 | 三角力量管理株式会社 | Force sensor |
| CN114846305A (en) * | 2019-12-19 | 2022-08-02 | L.C.有限责任公司 | Load sensor for metal silo |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |