CN104374511B - A kind of three-phase induction motor rotor bearing device for measuring radial force and measuring method - Google Patents
A kind of three-phase induction motor rotor bearing device for measuring radial force and measuring method Download PDFInfo
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- CN104374511B CN104374511B CN201410743722.6A CN201410743722A CN104374511B CN 104374511 B CN104374511 B CN 104374511B CN 201410743722 A CN201410743722 A CN 201410743722A CN 104374511 B CN104374511 B CN 104374511B
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- 238000009826 distribution Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 9
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Abstract
This civilization relates to one and is suitable for three-phase induction motor device for measuring radial force and measuring method, including motor front end cover, rotor bearing and machine shaft, it is characterized by motor front end cover, having bolt, auxiliary process key, support parts, left and right keeper and rear keeper with the force cell of display instrument, stress；Wherein, there is technique keyway in end cap；During measurement, first measurement apparatus is installed, then pass through the size of Theoretical Calculation axial force, by adjusting bolt, make force cell have certain pretightning force, start motor, observe the force value change of the display instrument of force cell.Present invention process is simple, and supplementary structure produces simple, easy to operate, and solves a difficult problem for current rotor bearing radial force test, for further appreciating that the actual forced status of motor, evaluates its level of processing and provides strong foundation.
Description
Technical field
The present invention relates to a kind of three-phase induction motor rotor bearing device for measuring radial force and measuring method, the radial force being mainly used in rotor bearing in track blower fan is measured.
Background technology
Fan rotor system is one of kernel component of blower fan system, rotor-bearing system actual loading situation be there is presently no corresponding test, stress to rotor external applied load is to be obtained by desirable Theoretical Calculation at present, but the sign of characteristic parameter differs greatly, as on bearing life, relatively large with actual difference, the actual loading of bearing life and bearing has much relations, and the bearing alignment error of rotor-support-foundation system brings extra load to be very doubt at present to bearing, wherein misaligning brought interference fit is affect the main of load outside bearing in rotating machinery, misaligning also is one of most commonly seen fault of rotating machinery；In rotating machinery fault, the fault of 60% with misalign relevant, therefore research rotor-support-foundation system misaligns the impact on mechanics of system and has great importance.In rotor-bearing system, due to the impact of manufacture, installation and operation environment, it is inevitable for misaligning.More rarely seen currently for motor radial force measuring method, in order to study the actual loading of rotor bearing, give one and be suitable for three-phase induction motor radial force measuring method.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency, it is provided that a kind of simple in construction, handling ease, easy to operate three-phase induction motor rotor bearing device for measuring radial force and measuring method；Solving a difficult problem for current rotor bearing radial force test, for further appreciating that the actual forced status of motor, evaluate its level of processing and provide strong foundation, the technical merit for improving motor provides strong test evaluation data.
The technical scheme is that a kind of three-phase induction motor rotor bearing device for measuring radial force, including motor front end cover, rotor bearing and machine shaft, it is characterised in that described three-phase induction motor rotor bearing device for measuring radial force is to be provided with bolt, auxiliary process key on motor front end cover, support parts, left and right keeper and rear keeper with the force cell of display instrument, stress；Wherein, technique keyway is had in end cap；Force cell is standard component；
Described stress supports component distribution and is arranged on motor front end cover, and stress supports parts and is provided with bolt hole, and each stress supports parts and is arranged below the force cell with display instrument, and this force cell arranges left and right keeper and rear keeper；Wherein, adopting arc transition between left and right keeper and stress support portion, bolt is arranged in the bolt hole that stress supports parts, and the top in force cell is withstood in bolt lower end;Described stress supports the quantity of parts and determines according to practical situation；
Described auxiliary process key is formed entirety by rectangular block and cylinder；This auxiliary process key is arranged in the technique keyway in motor front end cover, wherein, rectangular block on auxiliary process key and rotor bearing radially contact with, and (with the small round head end in contact of force cell, namely the roundlet head end of force cell withstands cylinder ends to the cylinder on auxiliary process key.
The quantity of described stress support portion is three, and these three stress support section cloth are arranged on motor front end cover.
The measuring method of described three-phase induction motor rotor bearing device for measuring radial force is as follows: is first installed by rotor bearing device for measuring radial force, and passes through adjusting bolt so that force cell has certain pretightning force；Then pass through the size of Theoretical Calculation rotor bearing radial force, restart motor, when motor normal operation, observe force value on the display instrument screen of force cell to change with each measure dot number according to display, if the data deviation theory value of the bearing radial force measured calculates too big, then readjust pretightning force, so repeat, until the requirement of the data fit actual condition of the bearing radial force measured, as measurement data deviation is too big, then rethink the type selecting of force cell or the problem of consideration motor process and frock.
The present invention is provided with bolt, auxiliary process key on motor front end cover, supports parts, left and right keeper and rear keeper with the force cell of display instrument, stress；Wherein, technique keyway is had in end cap；Auxiliary process key is installed in the auxiliary process keyway in motor front end cover, rectangular block and the rotor bearing of auxiliary process key radially contact with, the roundlet head end of force cell withstands the cylindrical piece cylindrical end in auxiliary process key, location in left and right keeper and rear keeper installed by force cell at force cell, then bolt is arranged in the bolt hole in electric motor end cap, bolt is screwed down the top withstanding in force cell, under stress in force cell stress support portion supports, adjusting bolt so that force cell has certain pretightning force.Under motor normal operation, observe the force value change of force cell, be the radial force suffered by electric machine operation state lower rotor part bearing.
Rotor bearing radial force is measured the end cap of system and is made up of common electric machine drive end bearing bracket, stress support portion and location, left and right and rear location, in order to easy to process, adopts arc transition between location, left and right and stress support portion.Auxiliary process key is made up of soon rectangular block and the cylinder of auxiliary process key, and owing to positioning accuracy request is high, in order to easy to process, it is possible to make split type, bolt and force cell adopt standard component type selecting.
The present invention adopts motor front end cover, bolt, auxiliary process key and force cell composition rotor bearing radial force test system, technique is simple, supplementary structure produces simple, easy to operate, solve a difficult problem for current rotor bearing radial force test, for further appreciating that the actual forced status of motor, evaluating its level of processing and provide strong foundation, the technical merit for improving motor provides strong test evaluation data.
Accompanying drawing explanation
Fig. 1 is the perspective view of the present invention；
Fig. 2 is the left view structural representation (electric motor end cap left view) of the present invention；
Fig. 3 is that the electric motor end cap C of the present invention is to structural representation；
Fig. 4 is the electric motor end cap perspective view of the present invention；
Fig. 5 is the installation principle schematic of the present invention；
Fig. 6 is the electric motor end cap sectional structure schematic diagram of the present invention；
Fig. 7 is the auxiliary process key perspective view of the present invention；
In figure: 1-motor front end cover, 2-bolt, 3-auxiliary process key, the 4-force cell with display instrument, 5-supports parts, about 6-keeper, 7-bolt hole, 8-auxiliary process keyway, keeper after 9-, 10-rectangular block, 11-cylinder, 12-rotor bearing.
Detailed description of the invention
Below in conjunction with concrete drawings and Examples, the present invention is further described: a kind of three-phase induction motor rotor bearing device for measuring radial force, including motor front end cover 1, rotor bearing 12 and machine shaft, it is characterised in that described three-phase induction motor rotor bearing device for measuring radial force be on motor front end cover 1, be provided with bolt 2, auxiliary process key 3, force cell 4 with display instrument, stress support parts 5, left and right keeper 6 and rear keeper 9；Wherein, technique keyway 8 is had in end cap 1；Force cell 4 is standard component；
Described stress supports parts 5 distribution and is arranged on motor front end cover 1, stress supports parts 5 and is provided with bolt hole 7, each stress supports parts 5 and is arranged below the force cell 4 with display instrument, this force cell 4 arranges left and right keeper 6 and rear keeper 9 positions；Wherein, adopting arc transition between left and right keeper 6 and stress support portion 5, bolt 2 is arranged in the bolt hole 7 that stress supports parts 5, and the top in force cell 4 is withstood in bolt 2 lower end;
Described auxiliary process key 3 is formed entirety by rectangular block 10 and cylinder 11；This auxiliary process key 3 is arranged in the technique keyway 8 in electric motor end cap 1, wherein, rectangular block 10 and the rotor bearing of auxiliary process key 3 radially contact with, the i.e. small round head end in contact of the cylinder 11 of auxiliary process key 3 and force cell 4, namely the roundlet head end of force cell 4 withstands cylinder 11 cylindrical end.
The quantity of described stress support portion 5 is three, and these three stress support portion 5 distributions are arranged on electric motor end cap 1.
The measuring method of described three-phase induction motor rotor bearing device for measuring radial force is as follows: first installed by rotor bearing device for measuring radial force, and by adjusting bolt 2 so that force cell 4 has certain pretightning force；Then pass through the size of Theoretical Calculation rotor bearing radial force, restart motor, when motor normal operation, observe force value change and each measure dot number on the display instrument screen of force cell 4 and, according to display, be the radial force suffered by electric machine operation state lower rotor part bearing.If the data deviation theory value of the bearing radial force measured calculates too big, then readjust pretightning force, so repeat, until the requirement of the data fit actual condition of the bearing radial force measured, as measurement data deviation is too big, then rethink the type selecting of force cell or the problem of consideration motor process and frock.
The electric motor end cap 1 that the present invention adopts must have the stressed member 5 of the location to force cell 4 and supporting role, and accept parts 5 and must have enough rigidity, make when force cell stress, stressed member 5 have to be sufficiently small, in order to avoid affecting the certainty of measurement of force cell 4, auxiliary process key 3 is made up of rectangular block 10 and the cylinder 11 of auxiliary process key, itself and auxiliary process keyway 8 must be matched in clearance, and it has less roughness, to ensure that its contact has less frictional force, reduce the radial force consumption error that frictional force is brought.The pretightning force of force cell 4 is given must be moderate, brings overflow to determine the risk of load to sensor too greatly, and too little precision is inadequate.The measurement range selection of force cell 4 to be selected according to the practical situation of bearing, and too big precision is inadequate, and sensor is caused the risk of damage by too little meeting.
The present invention adopts motor front end cover, bolt, auxiliary process key and force cell composition rotor bearing radial force test system process simple, supplementary structure produces simple, easy to operate, solve a difficult problem for current rotor bearing radial force test, for further appreciating that the actual forced status of motor, evaluate its level of processing and provide strong foundation.
Claims (3)
1. a three-phase induction motor rotor bearing device for measuring radial force, including motor front end cover (1), rotor bearing (12) and machine shaft, it is characterised in that:
A, described three-phase induction motor rotor bearing device for measuring radial force be on motor front end cover (1), be provided with bolt (2), auxiliary process key (3), force cell (4) with display instrument, stress support parts (5), left and right keeper (6) and rear keeper (9)；Wherein, technique keyway (8) is had in end cap (1)；Force cell (4) is standard component；
B, described stress support parts (5) distribution and are arranged on motor front end cover (1), stress supports parts (5) and is provided with bolt hole (7), each stress supports parts (5) and is arranged below the force cell (4) with display instrument, and this force cell (4) arranges left and right keeper (6) and rear keeper (9)；Wherein, arc transition is adopted between left and right keeper (6) and stress support portion (5), bolt (2) is arranged in the bolt hole (7) that stress supports parts (5), and the top in force cell (4) is withstood in bolt (2) lower end;Described stress supports the quantity of parts (5) and determines according to practical situation；
C, described auxiliary process key (3) are formed entirety by rectangular block (10) and cylinder (11)；This auxiliary process key (3) is arranged in the technique keyway (8) in motor front end cover (1), wherein, the rectangular block (10) of auxiliary process key (3) and rotor bearing radially contact with, the cylinder (11) of auxiliary process key (3) and the small round head end in contact of force cell (4), namely the roundlet head end of force cell (4) withstands cylinder (11) end.
2. a kind of three-phase induction motor rotor bearing device for measuring radial force as claimed in claim 1, it is characterized in that described stress supports the quantity of parts (5) is three, and these three stress support parts (5) distribution and are arranged on motor front end cover (1).
3. the measuring method of a kind of three-phase induction motor rotor bearing device for measuring radial force as claimed in claim 1, it is characterized in that the measuring method of described three-phase induction motor rotor bearing device for measuring radial force is as follows: first installed by three-phase induction motor rotor bearing device for measuring radial force, and by adjusting bolt (2) so that force cell (4) has certain pretightning force；Then pass through the size of Theoretical Calculation rotor bearing radial force, restart motor, when motor normal operation, observe force value on the display instrument screen of force cell (4) to change with each measure dot number according to display, if the data deviation theory value of the bearing radial force measured calculates too big, then readjust pretightning force, so repeat, until the requirement of the data fit actual condition of the bearing radial force measured, as measurement data deviation is too big, then rethink the type selecting of force cell or the problem of consideration motor process and frock.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410743722.6A CN104374511B (en) | 2014-12-09 | 2014-12-09 | A kind of three-phase induction motor rotor bearing device for measuring radial force and measuring method |
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| CN201410743722.6A CN104374511B (en) | 2014-12-09 | 2014-12-09 | A kind of three-phase induction motor rotor bearing device for measuring radial force and measuring method |
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| CN104374511A CN104374511A (en) | 2015-02-25 |
| CN104374511B true CN104374511B (en) | 2016-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3978886A1 (en) * | 2016-11-28 | 2022-04-06 | TQ-Systems GmbH | Load cell for determining a radial force acting on a crankshaft |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US12117065B2 (en) | 2018-05-31 | 2024-10-15 | Tq-Systems Gmbh | Traction mechanism with internal toothing and external toothing and transmission with traction mechanism |
| JP7275989B2 (en) * | 2019-08-13 | 2023-05-18 | 株式会社椿本チエイン | Load load detection unit |
| CN117968907A (en) * | 2022-12-16 | 2024-05-03 | 深圳崇湛医疗设备有限公司 | Radial force detection device of support |
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| US5583990A (en) * | 1993-12-10 | 1996-12-10 | Cray Research, Inc. | System for allocating messages between virtual channels to avoid deadlock and to optimize the amount of message traffic on each type of virtual channel |
| CN101303261B (en) * | 2007-05-11 | 2011-02-09 | 洛阳轴研科技股份有限公司 | Method for measuring non-contact type bearing startup friction torque and measuring instrument thereof |
| CN101256103A (en) * | 2008-02-21 | 2008-09-03 | 文鉴恒 | Megawatt level wind power generation oar-changing bearing friction torque numeric control testing machine and test approach |
| CN101419105B (en) * | 2008-11-26 | 2010-12-22 | 中国矿业大学 | Shaft part force measuring device |
| CN101660970A (en) * | 2009-09-24 | 2010-03-03 | 浙江天马轴承股份有限公司 | Large bearing testing machine |
| FI124566B (en) * | 2010-12-13 | 2014-10-15 | Konecranes Oyj | Arrangement for measuring the radial forces of the bearing |
| CN102570680B (en) * | 2011-11-29 | 2013-08-07 | 东方电气集团东方电机有限公司 | Alignment support device for rotor of permanent-magnetic wind power generator and rotor bearing replacement method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3978886A1 (en) * | 2016-11-28 | 2022-04-06 | TQ-Systems GmbH | Load cell for determining a radial force acting on a crankshaft |
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Effective date of registration: 20160908 Address after: 412001 Hunan Province, Zhuzhou Shifeng District Tian Xin North Gate Patentee after: Zhuzhou Liancheng group fan Co., Ltd. Address before: 412000 Hunan Province, Zhuzhou Shifeng District North Gate Tian Xin Liancheng group technology management department Patentee before: Liancheng Group Co., Ltd., Zhuzhou |
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Effective date of registration: 20180802 Address after: 412000 Hunan Province, Zhuzhou Shifeng District Tian Xin North Gate Patentee after: Hunan Liancheng rail equipment Co., Ltd. Address before: 412001 Tianxin gate in Shi Feng District, Zhuzhou, Hunan Patentee before: Zhuzhou Liancheng group fan Co., Ltd. |
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Effective date of registration: 20190808 Address after: 412000 Electrical Building, Tianxin Liancheng Company, Shifeng District, Zhuzhou City, Hunan Province Patentee after: Hunan Liancheng Special Equipment Co., Ltd. Address before: 412000 Hunan Province, Zhuzhou Shifeng District Tian Xin North Gate Patentee before: Hunan Liancheng rail equipment Co., Ltd. |
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Effective date of registration: 20200522 Address after: 412000 Hunan Province, Zhuzhou Shifeng District Tian Xin North Gate Patentee after: ZHUZHOU LINCE GROUP Co.,Ltd. Address before: 412000 Electrical Building, Tianxin Liancheng Company, Shifeng District, Zhuzhou City, Hunan Province Patentee before: Hunan Liancheng Special Equipment Co., Ltd. |