CN109973227A - A kind of electric machine rotor touches the shutdown protector to rub - Google Patents
A kind of electric machine rotor touches the shutdown protector to rub Download PDFInfo
- Publication number
- CN109973227A CN109973227A CN201910313232.5A CN201910313232A CN109973227A CN 109973227 A CN109973227 A CN 109973227A CN 201910313232 A CN201910313232 A CN 201910313232A CN 109973227 A CN109973227 A CN 109973227A
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- CN
- China
- Prior art keywords
- rub
- slide
- bar
- outer circle
- electric machine
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- Legal status (The legal status 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 status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
- F02D17/04—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling rendering engines inoperative or idling, e.g. caused by abnormal conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/06—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving electric generators
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a kind of electric machine rotors to touch the shutdown protector to rub, which is mounted between Power generator fan and machine set frame.In diesel generating set operation, alternator shaft is generated amount of deflection by moment of flexure, if amount of deflection becomes larger, then when generator rotor core outer circle will encounter stator core inner hole, because the rolling bearing outer circle of apparatus of the present invention and the gap of Power generator fan gusset outer circle are less than the unilateral gap between generator rotor core outer circle and stator core inner hole, so the fan gusset outer circle of generator first encounters the rolling bearing outer circle of apparatus of the present invention, make slide-bar downlink, trigger microswitch, obtain control circuit electric, to make the main circuit of diesel generating set power off, diesel-driven generator unit is with regard to out of service, achieve the purpose that prevent generator rotor core outer circle and stator core inner hole " touch and rub ".
Description
Technical field
The present invention relates to diesel generating set power technique fields, and the shutdown to rub is touched more particularly to a kind of electric machine rotor
Protective device.
Background technique
Diesel generating set, be indispensable fixed power source in many industries and people's daily life, mobile power source,
Standby power supply device；If they break down, just by the normal operation for directly affecting these industries and people
Often life；Rotor and stator are collided phenomenon when " touch and rub " i.e. unit is run, and are common one of the failures of motor；This failure
The more serious accident occurred when being motor operation causes the serious accident of fatal crass sometimes；Especially large and middle size motor,
The loss for touching the accident of rubbing may be more serious；Causing motor to touch, the reason of rubbing, is more, and overload, unit is static and dynamic is not right
Moderate is bigger than normal, flexible laminated membrane coupling rigidity is less than normal, rotor weight and centrifugal force, rotor acceleration are excessive, motor oscillating is bigger than normal, turns
When the factors such as the unilateral magnetic force that son is subject to is bigger than normal, bearing wear is excessive cause the amount of deflection of armature spindle excessive, rotor outer circle surface
It is possible to collide with stator internal circular surfaces, that is, touches the accident of rubbing；At this point, the coil of stator, rotor is likely to burn；Depending on
Son, rotor are most important two components of motor, if they are damaged, repair that they are highly difficult, and cost is also higher, very
It is scrapped to whole motor is likely to result in.
Preventing the measure of motor stator and rotor rubbing at present, mainly first test obtains touching the signal that rubs, and redevelopment is out of order
Detection identifying system is monitored；Or increases shock-damper and touch the bring loss etc. that rubs to mitigate；These systems or device
Exploitation, processing technical requirements and processing cost it is higher, and device the space occupied is larger；Therefore, it invents a kind of low
Cost, small in size and while effectivelying prevent motor operation, touches the device to rub is highly desirable.
Summary of the invention
The technical problem to be solved by the present invention is to invent a kind of electric machine rotor to touch the shutdown protector to rub, reaching is prevented
Motor stator mentioned above in the background art and rotor can generate the purpose touched and rubbed.
On generator amature there are three biggish components: shaft, rotor core and the fan next to rotor core；
The weight of rotor core is most heavy in these three components；Rotor core is mounted on the middle part of alternator shaft.Diesel generation
When unit is run, the Resultant force for the maximum external force that alternator shaft is subject to often at the intermediate position that it is mounted with rotor core,
Direction is downward.But since the shaft of rotor core installation position is tightly encased by rotor core, this part shaft occurs curved
Bent amount of deflection is minimum, thus shaft occur maximum defluxion point should at the farther away rotor core end of bearing from support, that is,
Next to the fan end of rotor core.The outside diameter of fan gusset many bigger than the outside diameter of rotor core.Generator wind
Fan is located inside the part connection ring of diesel generating set stationary part, is provided with multiple windows in connection ring.It is most lower by fan
The connection ring window in face, it can be seen that the rack of diesel generating set.
The technical scheme is that being provided with rolling bearing, rolling bearing below the fan gusset of diesel-driven generator
There are gap between fan gusset, gap numerical value is less than between unilateral between generator rotor core and stator core inner hole
Gap, the rolling bearing inner wall are provided with short axle, and short axle is plugged on slide-bar through washer, and the slide-bar outer wall is arranged with set
Cylinder, slide-bar lower end are provided with spring, and the sleeve is arranged on positioning disk, and positioning disk is located above cylinder pad, the cylinder pad inner wall
It is provided with microswitch, is touched at the top of microswitch with slide-bar bottom connection, the cylinder pad bottom is connected with bottom plate, bottom base plate
It is provided with the rack of diesel generating set.
Preferably, the short axle is secured it on slide-bar with nut and spring washer.
Preferably, the sleeve and positioning disk are fixed by screw, and are positioned disk center and offered through-hole, in through-hole
It is inserted with slide-bar.
Preferably, the spring is set on the outer wall of slide-bar lower end, and spring is located above positioning disk.
Preferably, the microswitch is fixed by screws on bottom plate, and the top of microswitch and slide-bar bottom phase
Contact.
Preferably, at least two through-holes are offered on the cylinder pad outer wall, and cylinder pad passes through screw and positioning disk and bottom plate
It is fixedly connected.
Compared with prior art, the beneficial effects of the present invention are: the electric machine rotor touch the shutdown protector that rubs can be with
In diesel generating set operation, alternator shaft is generated amount of deflection by moment of flexure, if amount of deflection becomes larger, turns in generator
When sub- iron core outer circle will encounter stator core inner hole, because the gap of rolling bearing outer circle and fan gusset outer circle is less than power generation
Unilateral gap between machine rotor iron core outer circle and stator core inner hole, so the fan gusset outer circle of generator first meets this hair
The rolling bearing outer circle of bright device makes slide-bar downlink, triggers microswitch, obtains control circuit electric, to make diesel-driven generator
The main circuit power-off of group, diesel-driven generator unit is just out of service, and reaching prevents generator rotor core outer circle and stator core
The purpose of inner hole " touch and rub ".
Detailed description of the invention
Attached drawing is the main view that a kind of electric machine rotor of the present invention touches the shutdown protector to rub.
1: fan gusset；2: rolling bearing；3: short axle；4: slide-bar；5: sleeve；6: spring；7: positioning disk；8: bottom plate；9:
Rack；10: screw；11: screw；12: microswitch；13: cylinder pad；14: screw；15: screw；16: washer；17: nut；18:
Spring washer
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to attached drawing, the present invention provides a kind of technical solution: a kind of electric machine rotor touches the shutdown protector to rub,
Rolling bearing 2 is provided with below Power generator fan gusset 1, there are gap S between rolling bearing 2 and fan gusset 1, gap S's
Numerical value is less than the unilateral gap between generator rotor core outer circle and stator core inner hole, and 2 inner wall of rolling bearing is provided with short
Axis 3, short axle 3 are secured it on slide-bar 4 with nut 17 and spring washer 18.4 outer wall of slide-bar is arranged with sleeve 5,4 lower end of slide-bar
It is provided with spring 6, spring 6 is set on the outer wall of 4 lower end of slide-bar, and spring 6 is located at 7 top of positioning disk；The setting of sleeve 5 is fixed
On the disk 7 of position, positioning disk 7 is located at 13 top of cylinder pad, and sleeve 5 is fixed with positioning disk 7 by screw 15, and 7 center of positioning disk
Through-hole is offered, slide-bar 4 is inserted in through-hole；13 inner wall of cylinder pad is provided with microswitch 12,12 top of microswitch and slide-bar 4
Bottom connection touching, microswitch 12 are fixed on bottom plate 8 by screw 11；13 bottom of cylinder pad is connected with bottom plate 8,8 bottom of bottom plate
Portion is provided with the rack 9 of diesel generating set；At least two through-holes are offered on 13 outer wall of cylinder pad, through-hole is then to facilitate miniature open
The conducting wire for closing 12 is drawn, and the thickness of cylinder pad 13 is that the length for stretching out positioning disk 7 by the height and slide-bar 4 of microswitch 12 is determined
Fixed, and cylinder pad 13 is fixedly connected by screw 14 with positioning disk 7 and bottom plate 8；Because the model of diesel generating set is different, fan
The numerical value of gap S between gusset 1 and rolling bearing 2 is also different；And the total height of the present apparatus is then also dependent on diesel oil
The model of generating set is high by the rolling bearing 2 and the length of change in design slide-bar 4, microswitch 12 that select different model
Degree, bottom plate 8 thickness adjust, the height of sleeve 5, positioning disk 7 thickness corresponding change, control should with the length of slide-bar 4
The purpose of device total height, which is that there are one in order to guarantee the outer circle of rolling bearing 2 and 1 outer circle of fan gusset, to prevent generator from sending out
The gap S to rub is touched in life；The electric machine rotor touches the shutdown protector to rub can be when diesel generating set be run, and generator turns
Axis is generated amount of deflection by moment of flexure, if amount of deflection becomes larger, will encounter in stator core in generator rotor core outer circle
Kong Shi, because the gap of 2 outer circle of rolling bearing and 1 outer circle of fan gusset is less than in generator rotor core outer circle and stator core
Unilateral gap between hole makes so 1 outer circle of fan gusset of generator first encounters 2 outer circle of rolling bearing of apparatus of the present invention
4 downlink of slide-bar triggers microswitch 12, obtains control circuit electric, so that the main circuit of diesel generating set is powered off, diesel oil hair
Motor unit is just out of service, achievees the purpose that prevent generator rotor core outer circle and stator core inner hole " touch and rub ".
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art,
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (6)
1. a kind of electric machine rotor touches the shutdown protector to rub, it is characterised in that: below the fan gusset (1) of diesel-driven generator
It is provided with rolling bearing (2), there are gap S between the fan gusset (1) of rolling bearing (2) and generator, the numerical value of gap S is small
Unilateral gap between generator rotor core outer circle and stator core inner hole, rolling bearing (2) inner wall are provided with short
Axis (3), short axle (3) are plugged on slide-bar (4) through washer (16), and the slide-bar (4) is mounted on sleeve (5), under slide-bar (4)
End is provided with spring (6), and the sleeve (5) is arranged on positioning disk (7), and positioning disk (7) is located above cylinder pad (13), the pad
Cylinder (13) inner wall is provided with microswitch (12), is touched at the top of microswitch (12) with slide-bar (4) bottom connection, the cylinder pad (13)
Bottom is connected with bottom plate (8), and bottom plate (8) bottom is provided with the rack (9) of diesel generating set.
2. a kind of electric machine rotor according to claim 1 touches the shutdown protector to rub, it is characterised in that: the short axle
(3) it is secured it on slide-bar 4 with nut 17 and spring washer 18.
3. a kind of electric machine rotor according to claim 1 touches the shutdown protector to rub, it is characterised in that: the sleeve
(5) it is fixed with positioning disk (7) by screw (15), and positioning disk (7) center offers through-hole, is inserted with slide-bar in through-hole
(4)。
4. a kind of electric machine rotor according to claim 1 touches the shutdown protector to rub, it is characterised in that: the spring
(6) it is set on the outer wall of slide-bar (4) lower end, and spring (6) is located above positioning disk (7).
5. a kind of electric machine rotor according to claim 1 touches the shutdown protector to rub, it is characterised in that: described miniature
Switch (12) is fixed on bottom plate (8) by screw (11), and the top of microswitch (12) and slide-bar (4) bottom connection touch.
6. a kind of electric machine rotor according to claim 1 touches the shutdown protector to rub, it is characterised in that: the cylinder pad
(13) at least two through-holes are offered on outer wall, and cylinder pad (13) connects by the way that screw (14) and positioning disk (7) and bottom plate (8) are fixed
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910313232.5A CN109973227B (en) | 2019-04-18 | 2019-04-18 | Motor stator and rotor rub-impact shutdown protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910313232.5A CN109973227B (en) | 2019-04-18 | 2019-04-18 | Motor stator and rotor rub-impact shutdown protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109973227A true CN109973227A (en) | 2019-07-05 |
| CN109973227B CN109973227B (en) | 2021-08-20 |
Family
ID=67085130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910313232.5A Active CN109973227B (en) | 2019-04-18 | 2019-04-18 | Motor stator and rotor rub-impact shutdown protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109973227B (en) |
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| CN109973227B (en) | 2021-08-20 |
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