CN101931350A - Motor protector - Google Patents
Motor protector Download PDFInfo
- Publication number
- CN101931350A CN101931350A CN2009102242324A CN200910224232A CN101931350A CN 101931350 A CN101931350 A CN 101931350A CN 2009102242324 A CN2009102242324 A CN 2009102242324A CN 200910224232 A CN200910224232 A CN 200910224232A CN 101931350 A CN101931350 A CN 101931350A
- Authority
- CN
- China
- Prior art keywords
- motor
- steel ball
- main body
- sliding plate
- pallet
- 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.)
- Pending
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Abstract
The invention discloses a motor protector device used on various mechanical transmission motors, comprising a motor main body protector chamber, a push rod, a copper disc and a contact point, wherein a tray is arranged in the motor main body protector chamber; and in the tray, a movable steel ball and a sliding disc are connected with a return spring. When suddenly in disconnection, burning or abnormal starting, a motor can timely stop from running and be in power off, therefore, the motor protector has the use effects of safety and insurance of motor starting and the advantages of convenient application, convenience and reliability and is installed and used on various large and small motors.
Description
[technical field]
The present invention relates to the design of the protector of a kind of use on the mechanical rotation motor.
[background technology]
At present, the rotary machine motor uses, the main cause that causes motor to damage: 1, power supply phase shortage, and 2, motor spare damages, 3, the parts damage of bearings of motor own, heavy wear etc., these reasons all can cause the damage of motor, cause unsafe factor.And the startup protective device of all kinds of motors is the cut-out and the closure of A.C. contactor, starting compensator and star triangle start Control current circuit; if any one opens circuit mutually in the triple line, these several protective devices still do not have desirable cutting off the electricity supply (being automatic trip).The present invention is exactly the design that will solve this automatic control equipment on this kind motor protecter.
[summary of the invention]
The purpose of this invention is to provide a kind of electric motor protecting apparatus easy to use, utilize motor that power supply is played in device generation shake-up in the motor main body protector and close down automatically.
In order to realize above-mentioned purpose; the protective device of motor protecter of the present invention; it is the centrifugal action that utilizes motor to rotate; be fixed in three grooves of pallet of motor tail end; the steel ball of 3 diameter 18mm has been housed respectively; motor is as long as rotate; three steel balls utilize centrifugal action to promote push rod pull switch on the sliding plate; cause pull in winding (magnetic coil) energising of contact point; produce magnetic force; the motor three-phase current is connected; any phase line no matter; produce short circuit in any position and open circuit; cause motor not change; the steel ball self-return of motor protecter; push rod is also return thereupon; the mains switch of push rod upper end utilizes the strength of return spring also to cut off electric current on the A.C. contactor magnetic coil immediately; force A.C. contactor to trip immediately; cut off the three phase mains that leads to motor; protection motor whatsoever reason can not burn; in addition; if motor power is all out of question; but appearring in the various working machines that motor drove, damage parts; stuck; motor rotation is motionless, and this moment, the steel ball of motor protecter also can lose centrifugal force, will cut off contactor at once and (comprise starting compensator; star triangle starting cabinet) power supply on the magnetic coil on forces three phase mains to disconnect immediately, plays the effect of protection motor.In a word, motor is any reason no matter, and the motor protecter centrifugal force that shuts down disappears, and three phase mains will be cut off immediately, and the protection motor can not burnt.
[description of drawings]
Below in conjunction with drawings and Examples to further instruction of the present invention.
Fig. 1 is the cutaway view of the specific embodiment of the invention.
Illustrate 1 motor protecter: 1, motor main body protector, 2, pallet, 3, steel ball, 4, sliding plate, 5, return spring, 6, push rod, 7, the copper dish, 8, contact point, 9, binding post, 10, locking nut
[embodiment]
The apparatus structure of the motor protecter shown in Fig. 1, motor main body protector (1) indoor are provided with on the movable steel ball of pallet (2) (3) and return spring (5) push rod (6) that sliding plate (4) is connected contact copper dish (7) and contact point (8) composition are housed.
In the indoor pallet (2) of the motor main body protector (1) of the motor protecter shown in Fig. 1, steel ball (3) is arranged, steel ball (3) is the wear-resisting ball of steel of rotatable slip, steel ball (3) sliding plate (4) main body motor protecter (1) indoor can just like its meet ground can be freely up and down; The indoor pallet (2) of main body motor protecter (1) has three ball grooves of gradient shape, and the rotatable rolling of movable steel ball (3) is convenient to the movable sliding plate of steel ball (3) (4) extruding return spring (5) and is as the criterion; Copper dish (7) is a round diameter, should be wider than the face of two diameter contact points (8).Its motor main body protector (1) uses locking nut (10) fixing respectively in two sub-sections, and pallet (2), steel ball (3) and sliding plate (4) partial fixing are on shaft tail end behind the motor, and the partial fixing of copper dish (7) and contact point (8) is on the guard shield of fan drum; Its steel ball (3) sliding plate (4) and return spring (5) push rod (6) be activity push-and-pull copper dish (7) flexibly, is convenient to and the contacting of two contact points (8), and binding post (9) is direction outwardly.
During electric motor starting, motor protecter is connected on start switch in the ac contactor coil, treat that motor rotation is normal after, starting switch cut off getting final product.
The effect of this invention motor protecter has and can in time shut down, cut off the power supply, and plays the result of use of electric motor starting security insurance, and convenient the installation on all size motor of utilization used, and be convenient and reliable.
Claims (3)
1. the apparatus structure of a motor protecter; it is characterized in that: motor main body protector (1) indoor is provided with return spring (5) push rod (6) that the movable steel ball of pallet (2) (3) is connected with sliding plate (4) and the copper dish (7) and the contact point (8) that connect are housed form, and motor main body protector (1) rotates by motor and movable steel ball (3) is promoted return spring (5) copper dish (7) to the stressed support sliding plate of inner rotary (4) is connected and separates with contact point (8).
2. a kind of electric motor protecting apparatus according to claim 1 is characterized in that: the rotatable slip of steel ball (3) in the indoor pallet of motor main body protector (1) (2) ball groove is flexible, and steel ball (3) is the wear-resisting ball of steel; Pallet (2)) in the ball groove steel ball (3) and sliding plate (4) motor main body protector (1) is indoor can meet ground just like it about activity freely; Three ball grooves of gradient shape that rotatable rolling steel balls (3) is arranged on the pallet (2) are convenient to the movable sliding plate of steel ball (3) (4) extruding return spring (5) and are as the criterion; (4) copper dish (7) is circular, and diameter should be wider than the face of two contact points (8).
3. a kind of electric motor protecting apparatus according to claim 1, it is characterized in that: its motor main body protector (1) uses locking nut (10) fixing respectively in two sub-sections, and pallet (2), steel ball (3) and sliding plate (4) partly are fixed on behind the motor on the shaft tail end with locking nut (10); The partial fixing of copper dish (7) and contact point (8) is on the guard shield of fan; Its steel ball (3) sliding plate (4) and return spring (5) push rod (6) be activity push-and-pull copper dish (7) flexibly, is convenient to and the contacting of two contact point (8); Binding post (9) is direction outwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102242324A CN101931350A (en) | 2009-11-26 | 2009-11-26 | Motor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102242324A CN101931350A (en) | 2009-11-26 | 2009-11-26 | Motor protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101931350A true CN101931350A (en) | 2010-12-29 |
Family
ID=43370331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102242324A Pending CN101931350A (en) | 2009-11-26 | 2009-11-26 | Motor protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101931350A (en) |
-
2009
- 2009-11-26 CN CN2009102242324A patent/CN101931350A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20101229 |