CN1242882A - Preloading system for clamp of stator end winding coil - Google Patents
Preloading system for clamp of stator end winding coil Download PDFInfo
- Publication number
- CN1242882A CN1242882A CN 97181223 CN97181223A CN1242882A CN 1242882 A CN1242882 A CN 1242882A CN 97181223 CN97181223 CN 97181223 CN 97181223 A CN97181223 A CN 97181223A CN 1242882 A CN1242882 A CN 1242882A
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- Prior art keywords
- coil
- radially
- supports seat
- load means
- clamping device
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- 238000004804 winding Methods 0.000 title claims abstract description 44
- 230000036316 preload Effects 0.000 claims abstract description 43
- 238000012856 packing Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims 4
- 238000000034 method Methods 0.000 description 10
- 239000003822 epoxy resin Substances 0.000 description 7
- 229920000647 polyepoxide Polymers 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000011810 insulating material Substances 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 239000003365 glass fiber Substances 0.000 description 5
- 230000000295 complement effect Effects 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- 238000006424 Flood reaction Methods 0.000 description 1
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
A preload system for preloading end winding coils of a stator includes a coil support platform coupled to a periphery of one of the coils, a clamping apparatus compressing the end winding coils and the coil support platform and a preload apparatus between the clamping apparatus and the coil support platform and not running circumferentially around the clamping apparatus.
Description
Invention back of the body border
A kind of improved prestrain system that gives the prestrain of motor stator end coil clamping device.
Disclosed as the U.S. Patent No. 4,563,607 that is entitled as " the radially band assembly of motor stator coil end circle ", the end winding coil of motor stator is clamped under the pressure state by the tight device of strap clamp radially usually.Because these end winding coils of configuration under pressure state are so can make the vibration of these end winding coils reduce.Because of having reduced vibration, the possibility minimizing of fatigue rupture and insulating material wearing and tearing are reduced.
Though these coils are clamped under the pressure state at first, at the motor run duration, in the insulation system of clamp assembly creep takes place.To recognize as the people that are proficient in present technique.When in insulation system creep taking place, by radially being with institute's applied pressure to reduce.When institute's applied pressure reduced, the vibration of end winding coil promptly increased, and this will cause the insulating material excessive wear possibility of fatigue rupture to occur.Disclosed as above mentioned patent, strap clamp tightly installs prestrain in order to prevent this phenomenon from taking place to give radially usually, to prevent or to reduce the relaxation rate that the tight device of strap clamp radially is applied to the pressure on the winding coil of end.In addition, radially the radially band of the tight device of strap clamp is strained under tension force to provide pressure to prevent the insulating material creep.More specifically, if insulating material generation creep, will be to the radially band of tension to power of coil effect.
U.S. Patent No. 4,563,607 disclosed prestrain methods comprise the hole of the radially band of the tight device of strap clamp radially being passed rest pad and spring, and unfortunately, spring is malfunctioning under the pressure of being everlasting, and the prestrain method in this prestrain system can not be met the demands.More particularly, the radially band of height pressurized generally can be cut spring, and spring is died down.When spring died down, spring may pre-loaded pressure malfunctioning and that cause spring to provide reduce.If this phenomenon takes place, because the vibration of end winding coil, tightly installing institute's applied pressure by strap clamp radially will descend with speed faster, and reach than low value.Along with the minimizing of the pressure that puts on the end winding coil, the vibration of end winding coil increases, and this may cause fatigue crack and insulating material wearing and tearing.
As a result, very clear, for a long time, the prior art of prestrain system exists to satisfy and keep to give the winding coil prestrain of motor stator end and can not make the spring malfunctioning demand that dies down because of band radially.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of prestrain system that can keep give the winding coil prestrain of motor stator end and can not make spring die down malfunctioning because of band radially.
For reaching above-mentioned and other purpose of the present invention, a kind of first end winding coil of stator and prestrain system of the second end winding coil prestrain of giving comprises first a coil supports seat that is complementary with first coil periphery; A clamping device and first pre-load means that between the clamping device and the first coil supports seat, does not center on clamping device again of compressing the end coil and the first coil supports seat.
Press another aspect of the present invention, this prestrain system also includes one, and radially band and first is radially with the clamping device of latch, and one is disposed at first radially with not only not being disposed at first radially with between second end of latch and the first coil supports seat but also do not center on second pre-load means of radially being with around first pre-load means of band radially and one between first end of latch and the first coil supports seat.
By a third aspect of the present invention, the prestrain system also comprises second a coil supports seat that is complementary with second coil periphery, the packing layer of one deck between the first coil supports seat and first coil, this clamping device compress the second coil supports seat and have one the second radially band of radially not running into clamping device with latch and pre-load means.
Point out to characterize these and each other advantage and the feature of novelty of the present invention at this paper claims appended and that form this paper part Chinesely.Yet for a better understanding of the present invention, use advantage of the present invention and purpose, must be with reference to accompanying drawing that constitutes this paper another part and corresponding explanation, wherein, diagram and described a preferential embodiment of the present invention.
Brief description of drawings
Fig. 1 is the partial cross sectional view of the prestrain system of the preferred embodiment of the invention; With
Fig. 2 is another partial cross sectional view along the prestrain shown in Figure 1 system of a Different Plane.
The detailed description of preferential embodiment
Now referring to accompanying drawing, wherein, same sequence number is represented corresponding member in all views, especially referring to Fig. 1 and 2, comprise first a coil supports seat 18 that is positioned under first coil 12 for the first end winding coil 12 of stator 14 and the prestrain system of the second end winding coil 13 prestrains, a clamping device 20 that compresses the end winding coil 12,13 and the first coil supports seat 18, and first pre-load means 32 between the clamping device 20 and the first coil supports seat 18.By Fig. 1 and 2 as seen, this pre-load means 32 is as the above prestrain system of discussing with regard to conventional system, around the circumferential extension of clamping device 20.
Fig. 1 and 2 also represents clamping device 20.In this illustrated embodiment, clamping device 20 tightly installs for the radially strap clamp of compression end winding coil 12,13.Known to present technique, why called after radially the tight device 20 of strap clamp be because it extends along the radial axis ground with respect to the motor that coil 12,13 is installed basically.This radially the tight device 20 of strap clamp have one and radially be with 22, one first radially to be with latch 24 and one second radially to be with latch 26.As shown in Figure 1, radially one end ring 54 is respectively arranged, and radially be with latch 24,26 to pass each end ring 54 respectively and extend with 22 two ends.In addition, as shown in Figure 2, first radially with the groove 60 that has an end ring 54 to pass through on the latch 24.Though not shown second radially is with latch 26 among the figure, it also has a similar groove.Represent also that by Fig. 1 the trend of radially being with latch 24,26 relative coils 12,13 is a located lateral.In this embodiment, first radially be with latch 24 that one first end 50 and one second end 52 are arranged.
As U.S. Patent No. 4,563,607 is disclosed, radially is made of the glass fibre that floods mylar usually with 22.The method of installing radially with 22 also has been discussed in this patent.This method can comprise and will be with 22 to pass coil 12,13, make with hot-air and to be with 22 to solidify, be with 22 to be under the pressure, make and be with 22 to solidify by twisting radially to make with 22 end ring 54, use hydraulic jack puller strap 22 (not shown, because of be very clearly) then to the people that are proficient in present technique.In preferential embodiment shown in Figure 1, this system 10 also is included in the second coil supports seat 16 on second coil 13.Coil supports seat 16,18 is compressed for 20 times and these clamping device 20 applied forces is passed to coil 12,13 at clamping device.In addition, as shown in Figure 2, the first coil supports seat 18 have one make clamping device 20 radially with 22 holes of passing.Though the not shown in the drawings second coil supports seat 16, it also has similar shape, has one to make radially with 22 holes of passing.
Fig. 1 and 2 represents that also system 10 is included in the packing layer of radially being with between latch 24,26 and the respective coil supporting base 16,18 by compression 28.Packing layer rests and forms an interlayer that power is delivered to coil 12,13 from clamping device 20 on the supporting base 16,18.Best, packing layer 28 is made of the fiber material of handling with epoxy resin.More particularly, this fiber material can be a polyethylene terephthalate fiber.In addition, coil supports seat 16,18 is preferably by making with epoxy resin impregnated glass material.The epoxy resin of corresponding supporting base 16,18 and packing layer 28 adds with the power of 22 effects to make packing layer 28 remain on original position.
As shown in Figure 2, system 10 comprises that also one is configured in first radially with the two ends 50,52 of latch 24 and the pre-load means 32 between the first coil supports seat 18.Therefore, in preferential embodiment, two pre-load means 32 are arranged.Fig. 1 illustrates first radially with the pre-load means 32 under the end of latch 24.Fig. 2 has represented radially to be with two pre-load means between the latch 24 and first coil 12 first.Can be with 22 to solidify the back and pre-load means 32 is installed before with jack puller strap 22 aforesaid.
As illustrated in fig. 1 and 2, each pre-load means 32 comprise one or several springs 48 and one first radially with the two ends 50,52 of latch 24 and first coil 12 between by compression plug housing 30.In this preferential embodiment, spring 48 is tapers.Best, spring is Bellevil1e
Type glass fibre spring washer.Shown in preferential embodiment, in each pre-load means 32, use two springs 48.Yet, because spring 48 applied forces will change with the number of spring 48 immediately, so the number of used spring 48 provides necessary power in can the change system.In other words, will understanding as the people that are proficient in present technique, can change by spring 48 applied forces by changing spring 48 mutual orientation.
Best, plug housing 30 is by constituting with epoxy resin impregnated glass fibre.As shown in Figure 2, plug housing 30 and first the band latch 24 the bottom surface in groove contact.Because first radially with latch 24 also by constituting, so plug housing 30 and radially be with latch 24 to combine at least in part by epoxy resin with epoxy resin impregnated glass fiber material.
In addition, as shown in Figure 2, pre-load means 32 can comprise that also one is extended and enters the pin 36 of the first coil supports seat, 18 further groove 40 through spring 48 from the jack 38 of plug housing 30.Available bonding agent or similar method will be sold 36 and be loaded in the jack 38 of plug housing 32.Make pin 36 location with the method, pin 36 makes spring 48 keep motionless, to play the effect that prevents or reduce its displacement.
As mentioned above, in U.S. Patent No. 4,563, in the 607 disclosed prestrain systems, the spring of this pre-load means is around the circumferential extension of band radially, and may contact and radially be with 22.In addition, in the described prestrain of this patent system, the hole that spring has band radially to extend through.During work, these springs may die down, on the contrary because of 22 contact springs of being with that are stretched.As Fig. 2 clearly shown in, the pre-load means 32 among the present invention is around radially with 22 circumferential extension, and can not contact and radially be with 22.This pre-load means 32 is configured in first and radially is with between the latch 24 and the first coil supports seat 18.Importantly spring 48 may be porose, but radially be with 22 not by them.On the contrary, in the present invention, the hole of spring 48 only keeps pin 36 as passing.So, because with 22 around the circumferential extension of spring 48, thus be subjected to high pressure radially be with 22 will can not make of the present invention can dying down compressing spring 48.
As mentioned above, in this embodiment, radially being with 22, to pass end coil 12,13 clamped, and pre-load means 32 radially is compressed for 50,52 times with the two ends of latch 24 first.When clamping, coil 12,13 is under the pressure, and their vibration is reduced.At stator 14 duration of works, owing to making, the insulating material creep is with 22 to be tending towards lax, and by being with 22 pressure that act on coil 12,13 also to be tending towards reducing.This has just increased the vibration of coil 12,13.Because use prestrain system 10, when radially being with 22, pre-load means 32 plays the effect that prevents or lower the pressure relaxation rate on the coil 12,13.More particularly, when when being with 22 applied pressures to reduce, compressed spring 48 outwards heads on radially to be with latch 24 and to push away towards coil 12,13.When spring 48 pushes away, a power of effect and reduce the vibration of coil 12,13 on coil 12,13.
As shown in Figure 1, system 10 also comprises the shim 58 that a calking piece 56 and a cover have tapered end, is disposed at second and radially is with between the latch 26 and second coil 13.The orientation of shim 58 is to make tapered end staggered relatively.Best, calking piece 56 and shim 58 are by constituting with epoxy resin impregnated glass fibre.The effect that calking piece 56 and shim 58 play supporting second coil 13 and power passed to second coil 13 from clamping device 20.
Though in preferential embodiment of the present invention, pre-load means 32 is configured under first coil 12, on the other hand, they are also configurable on second coil 13 and second radially be with under the latch 26.In this interchangeable embodiment, radially be with the latch 26 and the second coil supports seat 16 except will correspondingly representing second coil 13, the second in the drawings, rather than first coil 12, the first is with radially outside the latch 24 and the first coil supports seat 18, Fig. 2 will be identical.
Yet, be to be understood that, even proposed the details of many feature and advantage of the present invention and 26S Proteasome Structure and Function of the present invention in the above description, but disclosed content only is exemplary, at appended claims on the meaning of broadness in the expressed gamut, according to principle of the present invention, can be in detail, especially in the shape of other part, all changes are made in size and layout aspect.
Claims (18)
1. give the first end winding winding of stator and the prestrain system of the second end winding winding prestrain for one kind, comprising:
A first coil supports seat that mates with the first coil periphery;
A clamping device that compresses this end winding coil and the first coil supports seat; With
One between the clamping device and the first coil supports seat and not around first pre-load means of this clamping device circumferential extension; Wherein, first pre-load means comprise a plug housing and at this clamping device with the compression spring between the first coil supports seat.
2. by the described system of claim 1, it is characterized in that first pre-load means comprises that also a jack from plug housing extends to the maintenance pin of the first coil supports seat groove.
3. by the described system of claim 1, it is characterized in that this spring is taper.
4. give the first end winding winding of stator and the prestrain system of the second end winding winding prestrain for one kind, comprising:
A first coil supports seat that mates with the first coil periphery;
A clamping device that compresses the end winding coil and the first coil supports seat;
One between the clamping device and the first coil supports seat and not around first pre-load means of clamping device circumferential extension; With
Second pre-load means between the clamping device and the first coil supports seat, this second pre-load means be not around the clamping device circumferential extension.
5. by the described system of claim 4, it is characterized in that first pre-load means and second pre-load means also respectively comprise a spring and a plug housing.
6. give the first end winding winding of stator and the prestrain system of the second end winding winding prestrain for one kind, comprising:
A first coil supports seat that mates with the first coil periphery;
A clamping device that compresses the end winding coil and the first coil supports seat;
One between the clamping device and the first coil supports seat and not around first pre-load means of clamping device circumferential extension; With
A second coil supports seat that mates with the second coil periphery, this clamping device compresses the second coil supports seat.
7. by the described system of claim 5, it is characterized in that first pre-load means and second pre-load means comprise respectively that also a jack from corresponding plug housing extends to the maintenance pin of the first coil supports seat groove.
8. by the described system of claim 7, it is characterized in that this spring is taper.
9. by the described system of claim 1, it is characterized in that this clamping device also comprises one, and radially band and one radially are with latch.
10. give the first end winding winding of stator and the prestrain system of the second end winding winding prestrain for one kind, comprising:
A first coil supports seat that mates with the first coil periphery;
The clamping device of the collapse coil end winding and the first coil supports seat, this clamping device have one, and radially band and one first radially are with latch;
One first radially with first end of latch and the first coil supports seat between and around this radially with first pre-load means of enclosing Zhou Yanshen; With
One first radially with second end of latch and the first coil supports seat between and around this radially with second pre-load means of circumferential extension.
11., it is characterized in that first and second pre-load means also respectively comprise a plug housing and a spring by the described system of claim 10.
12., it is characterized in that this spring is taper by the described system of claim 11.
13., it is characterized in that first pre-load means and second pre-load means comprise respectively that also a jack from corresponding plug housing extends to the maintenance pin of the first coil supports seat groove by the described system of claim 11.
14., comprise that also one deck is disposed at the packing layer between the first coil supports seat and first coil by the described system of claim 10.
15. give the first end winding winding of stator and the prestrain system of the second end winding winding prestrain, comprising for one kind:
The first coil supports seat and second a coil supports seat that mates with the second coil periphery that mates with the first coil periphery;
The packing layer of one deck between the first coil supports seat and first coil;
The radially strap clamp of compression end winding coil and a coil supports seat tightly installs, and it has a radially band, radially is with latch and one second radially to be with latch for one first, and this first radially is with latch that one first end and one second end are arranged;
One do not contact this radially with and be disposed at first radially with first end of latch and first pre-load means between the first coil supports seat; With
One do not contact this radially with and be disposed at first radially with second end of latch and second pre-load means between the first coil supports seat.
16., it is characterized in that first and second pre-load means also respectively comprise a plug housing and a spring by the described system of claim 15.
17., it is characterized in that first pre-load means and second pre-load means comprise respectively that also a jack from corresponding plug housing extends to the maintenance pin of the first coil supports seat groove by the described system of claim 16.
18., it is characterized in that this spring is taper by the system that claim 15 is told.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97181223 CN1242882A (en) | 1996-11-07 | 1997-09-18 | Preloading system for clamp of stator end winding coil |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/745,905 | 1996-11-07 | ||
| CN 97181223 CN1242882A (en) | 1996-11-07 | 1997-09-18 | Preloading system for clamp of stator end winding coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1242882A true CN1242882A (en) | 2000-01-26 |
Family
ID=5178169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97181223 Pending CN1242882A (en) | 1996-11-07 | 1997-09-18 | Preloading system for clamp of stator end winding coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1242882A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100588080C (en) * | 2004-02-12 | 2010-02-03 | 西门子公司 | Salient-pole machine comprising at least one polar coil |
-
1997
- 1997-09-18 CN CN 97181223 patent/CN1242882A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100588080C (en) * | 2004-02-12 | 2010-02-03 | 西门子公司 | Salient-pole machine comprising at least one polar coil |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |