CN201805318U - Motor safety protection device - Google Patents
Motor safety protection device Download PDFInfo
- Publication number
- CN201805318U CN201805318U CN2010205115013U CN201020511501U CN201805318U CN 201805318 U CN201805318 U CN 201805318U CN 2010205115013 U CN2010205115013 U CN 2010205115013U CN 201020511501 U CN201020511501 U CN 201020511501U CN 201805318 U CN201805318 U CN 201805318U
- Authority
- CN
- China
- Prior art keywords
- spline housing
- motor shaft
- motor
- round nut
- gear
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 210000004907 gland Anatomy 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
Landscapes
- Transmission Devices (AREA)
- Gear Transmission (AREA)
Abstract
The utility model relates to a motor safety protection device comprising a spline housing and a cluster gear. The spline housing is fixed at the top of a motor shaft; two friction discs and the cluster gear are arranged on the outer side of the spline housing, and the cluster gear is positioned between the two friction discs; the friction disc at the top is provided with a sliding sleeve; a flat key is assembled on the motor shaft in the position inside the spline housing; a round nut is assembled at the top of the motor shaft, a gland is arranged at the top of the round nut and is fixed through a screw, and a clamping ring is arranged at the bottom of the round nut; and a belleville spring is propped against the place between the clamping ring and the sliding sleeve. The utility model has the benefits that the cluster gear can slide relative to the spline housing, so as to prevent overload of the motor; and during the whole working process, all parts perform no motion relative to the motor shaft and the flat key of the motor, so that the motor shaft can not be damaged through pulling and can not get stuck.
Description
Technical field
The utility model relates to a kind of motor safety protective device.
Background technology
Motor mainly comprises generator, motor; it is widely used in industrial and agricultural production and economic construction; extensively adopt motor to drive the flywheel of fly press at present both at home and abroad; transmission is with in the employing that has synchronously; the employing gear drive that has; no matter adopt what kind of drive, the safety guard of motor is all very important.The device that some producers adopts directly with motor shaft generation slide relative, thereby and motor shaft and flat key between the wearing and tearing aggravation, generation is pulled, and is stuck in the time of seriously, influences the main frame operate as normal.
The utility model content
The purpose of this utility model provides a kind of reworked motor safety protective device; with overcome present prior art adopt device directly with motor shaft generation slide relative, thereby and motor shaft and flat key between wearing and tearing aggravate, generation is pulled; stuck when serious, influence the deficiency of main frame operate as normal etc.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of motor safety protective device; comprise spline housing and built-up gear; described spline housing is fixed in the top of motor shaft; the outside of spline housing is provided with two friction plates and built-up gear; built-up gear is arranged between two friction plates; the friction plate that wherein is positioned at the top is provided with sliding sleeve; the place, inside that is positioned at spline housing on the described motor shaft is equipped with flat key; the top of motor shaft is equipped with round nut; the top of round nut is provided with gland; gland is by screw, and the bottom of round nut is provided with trim ring, between trim ring and the sliding sleeve against disk spring.
The beneficial effects of the utility model are: in the course of the work, during the moment of torsion M on acting on gear≤Mn, the device operate as normal, when M＞Mn, because surpassed the moment of friction Mf that device is set, the relative spline housing of built-up gear slides like this, guarantees the motor nonoverload.Simultaneously, all parts and motor shaft and motor flat key all do not have relative motion in entire work process, thereby can not produce motor shaft yet and phenomenon such as pull, stuck.
Description of drawings
With reference to the accompanying drawings the utility model is described in further detail below.
Fig. 1 is the partial sectional view of the described motor safety protective device of the utility model embodiment.
Among the figure:
1, spline housing; 2, built-up gear; 3, motor shaft; 4, friction plate; 5, sliding sleeve; 6, flat key; 7, round nut; 8, gland; 9, screw; 10, trim ring; 11, disk spring.
Embodiment
As shown in Figure 1; the described a kind of motor safety protective device of the utility model embodiment; comprise spline housing 1 and built-up gear 2; described spline housing 1 is fixed in the top of motor shaft 3; the outside of spline housing 1 is provided with two friction plates 4 and built-up gear 2; built-up gear 2 is arranged between two friction plates 4; the friction plate 4 that wherein is positioned at the top is provided with sliding sleeve 5; the place, inside that is positioned at spline housing 1 on the described motor shaft 3 is equipped with flat key 6; the top of motor shaft 3 is equipped with round nut 7, and the top of round nut 7 is provided with gland 8, and gland 8 is fixing by screw 9; the bottom of round nut 7 is provided with trim ring 10, between trim ring 10 and the sliding sleeve 5 against disk spring 11.
During concrete work, spline housing 1 is installed on the motor shaft 3, connects no slide relative with flat key 6; Sliding sleeve 5 adopts spline to be connected with spline housing 1, but slide relative; By rotational circle nut 7, adjust the thrust of disk spring 11, can guarantee that built-up gear 2 can transmit the torque of setting.During overload, relatively rotate between built-up gear 2 and the spline housing 1.Simultaneously, also slide relative can take place between built-up gear 2 top and bottom and friction plate 4, sliding sleeve 5 lower planes, spline housing 1 top, thus the safety of unloading, protection motor.
When the peak torque of the required transmission of equipment motor is Mn, the external diameter of friction plate is D, and endoporus is d, and the coefficient of friction of friction material is μ, and specific pressure allowable is [p], so the moment of friction Mf=Mn(Nm of protective device).
1,, then acts on the normal pressure Nf on the sliding sleeve 5 according to required moment of friction Mf
Because
(two-layer up and down because the friction plate of device has) so multiply by 2
So
2, select butterfly spring and determine butterfly spring decrement △ according to Nf
If the free height H of selected butterfly spring, the limit travel of spring are ho, the service load during compression 0.65ho is Pf(KN), required tandem compound sheet is counted n,
So
3, check the specific pressure [p] that acts on the friction plate
4, matching requirements: during assembling, after round nut 7 contact trim rings 10, disk spring 11 are in free height, screw round nut 7 again, after assurance butterfly spring group decrement reaches △, load onto gland 8 and backing-up screw and get final product.
During work, during the moment of torsion M on acting on gear≤Mn, the device operate as normal is when M＞Mn, owing to surpassed the moment of friction Mf that device is set, built-up gear 2 relative spline housings 1 slips like this, assurance motor nonoverload.Simultaneously, all parts and motor shaft and motor flat key 6 all do not have relative motion in entire work process, thereby can not produce motor shaft yet and phenomenon such as pull, stuck.
Claims (1)
1. motor safety protective device; comprise spline housing (1) and built-up gear (2); it is characterized in that: described spline housing (1) is fixed in the top of motor shaft (3); the outside of spline housing (1) is provided with two friction plates (4) and built-up gear (2); built-up gear (2) is arranged between two friction plates (4); the friction plate (4) that wherein is positioned at the top is provided with sliding sleeve (5); the place, inside that is positioned at spline housing (1) on the described motor shaft (3) is equipped with flat key (6); the top of motor shaft (3) is equipped with round nut (7); the top of round nut (7) is provided with gland (8); gland (8) is fixing by screw (9); the bottom of round nut (7) is provided with trim ring (10), between trim ring (10) and the sliding sleeve (5) against disk spring (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205115013U CN201805318U (en) | 2010-08-31 | 2010-08-31 | Motor safety protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205115013U CN201805318U (en) | 2010-08-31 | 2010-08-31 | Motor safety protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201805318U true CN201805318U (en) | 2011-04-20 |
Family
ID=43874819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205115013U Expired - Fee Related CN201805318U (en) | 2010-08-31 | 2010-08-31 | Motor safety protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201805318U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951075A (en) * | 2010-08-31 | 2011-01-19 | 湖北富升锻压机械有限公司 | Motor safety protection device |
| CN110768429A (en) * | 2019-10-25 | 2020-02-07 | 上海品星防爆电机有限公司 | Mounting structure and method of motor for electric screw press |
-
2010
- 2010-08-31 CN CN2010205115013U patent/CN201805318U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951075A (en) * | 2010-08-31 | 2011-01-19 | 湖北富升锻压机械有限公司 | Motor safety protection device |
| CN110768429A (en) * | 2019-10-25 | 2020-02-07 | 上海品星防爆电机有限公司 | Mounting structure and method of motor for electric screw press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20130831 |