CN104300756A - Electric hoist synchronous motor with double-braking function - Google Patents
Electric hoist synchronous motor with double-braking function Download PDFInfo
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- CN104300756A CN104300756A CN201410585173.4A CN201410585173A CN104300756A CN 104300756 A CN104300756 A CN 104300756A CN 201410585173 A CN201410585173 A CN 201410585173A CN 104300756 A CN104300756 A CN 104300756A
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Abstract
The invention provides an electric hoist synchronous motor with the double-braking function. The electric hoist synchronous motor comprises a motor stator, a motor rotor, a motor shaft and a motor shell. The motor shell comprises an outer motor shell and a motor end cover. The motor shaft penetrates through the motor rotor. The electric hoist synchronous motor is characterized in that a first compression spring and a second compression spring which slide freely are arranged at the two ends of the portion, located on the motor shaft, of the motor rotor respectively, a first brake sliding block and a second brake sliding block which slide freely are arranged on the portions, on the outer sides of the two compression springs, of the motor shaft respectively, the sections, matched with the motor shaft, of the two brake sliding blocks are provided with a spline and a spline groove which are used for transmitting torque, and a first brake friction plate and a second brake friction plate which adhere to the motor shell are correspondingly arranged between the first brake sliding block and the motor shell and between the second brake sliding block and the motor shell; when the motor is out of power, no gap is generated in the motor rotor in the axial direction, the two compression springs at the two ends of the motor shaft make contact with the two brake sliding blocks respectively, and the double-braking function conducted by electromagnetic force and friction force is achieved through contact between the two brake friction plates and the motor shell.
Description
Technical field
The present invention relates to hoisting with braking motor of a kind of electric block, particularly disclose a kind of electric block synchronous machine of two braking,
When motor dead electricity, rotor two ends magnetic field dissipate, and the Compress Spring at rotor two ends passes through the slip of the brake silpper at two ends under the effect of elastic force, brake silpper and electric machine casing is made to produce pressure to brake strip thus produce frictional force, rotor can not rotate, and realizes two brakings of electromagnetic force and frictional force.
Background technology
Hoisting of current electric block field has two kinds of modes of braking with braking motor.Wherein a kind of employing is traditional braking motor, only arrange 1 cover braking system at motor afterbody, this mode of braking causes rocking of electric block and bearing because of by the damage after axial force because unidirectional spring pressure makes motor one direction bear axial impact force, reduces fail safe and the reliability of electric block.And another directly installs 1 disk brake on motor shaft in addition, the maximum shortcoming of this mode of braking is: once this disk brake lost efficacy or broke down, load will be caused to fall or cisco unity malfunction, and safety and reliability can not be fully protected.
Summary of the invention
The object of the invention is the shortcoming overcoming existing braking motor, propose a kind of electric block synchronous machine realizing two braking, fully ensure the fail safe that motor runs and reliability.
The present invention is achieved in that a kind of electric block synchronous machine realizing two braking, comprise motor stator, rotor, motor shaft and electric machine casing, described electric machine casing comprises motor housing and electric motor end cap, described motor shaft is through rotor, it is characterized in that: the rotor two ends on described motor shaft are respectively equipped with the first Compress Spring and the second Compress Spring, two Compress Springs are free to slide on rotor, motor shaft outside the first described Compress Spring and the second Compress Spring is respectively equipped with again the first brake silpper, second brake silpper, the section that two brake silppers match with motor shaft is provided with spline and the keyway of transmitting torque, two brake silppers are free to slide on motor shaft, the first described brake silpper, second brake silpper is corresponding between electric machine casing is provided with the first brake strip and the second brake strip, two brake strips are pasted on electric machine casing respectively, when described motor obtains electric, stator winding due to motor produces the effect of electromagnetic force, overcome the elastic force impact that two Compress Springs produce, two brake silppers being respectively in rotor both sides are slided toward rotor direction, makes two between brake silpper and electric machine casing, to produce gap, during motor dead electricity, the axial gapless of rotor, first Compress Spring and second Compress Spring at motor shaft two ends contact the first brake silpper and the second brake silpper respectively, two brake silppers contact with electric machine casing with the second brake strip respectively by the first brake strip again, realize two brakings of electromagnetic force and frictional force.When described motor obtains electric, two brake silppers being positioned at motor shaft both sides are contrary to the absorption affinity equal and opposite in direction in rotor direction, and two rolling bearings being positioned at motor shaft two ends affect without axial force, and motor operates steadily, and can not produce and rock.
The invention has the beneficial effects as follows: the braking system that motor of the present invention acts on owing to being provided with two covers simultaneously, the pressure of motor two Compress Springs when braking and operate is in the state of cancelling out each other forever, make the bearing damage of rocking and producing due to the effect of axial force of electric chain hoist be in minimum state, improve fail safe and reliability that electric chain hoist uses.Motor of the present invention realizes braking under the situation of motor stator dead electricity, and two cover braking system are braked simultaneously, therefore motor of the present invention meet completely electric block out of service time must be in the safety requirements of on-position, and achieve unprecedented synchronous pair of braking function, make the fail safe of electric block and reliability obtain breakthrough lifting.
Accompanying drawing explanation
Fig. 1 is that the electric block synchronous machine that the present invention realizes two braking obtains electricity condition fundamental diagram.
Fig. 2 is the electric block synchronous machine power failure state fundamental diagram that the present invention realizes two braking.
In figure: 1, the first brake strip; 2, the first brake silpper; 3, the first Compress Spring; 4, rotor; 5, motor stator; 6, motor housing; 7, the second Compress Spring; 8, the second brake silpper; 9, the second brake strip; 10, electric motor end cap; 11, the first rolling bearing; 12, the second rolling bearing.
Embodiment
With reference to the accompanying drawings 1 and accompanying drawing 2, a kind of electric block synchronous machine realizing two braking of the present invention, comprise motor stator 5, rotor 4, motor shaft and electric machine casing, electric machine casing comprises motor housing 6 and electric motor end cap 10, and motor shaft is through whole rotor 4.The motor shaft at the two ends of rotor 4 is respectively equipped with the first Compress Spring 3 and the second Compress Spring 7, two Compress Springs are free to slide on rotor 4.Motor shaft outside first Compress Spring 3 and the second Compress Spring 7 is respectively equipped with again the first brake silpper 2, second brake silpper 8, the section that two brake silppers match with motor shaft is provided with spline and the keyway of transmitting torque, and two brake silppers are free to slide on motor shaft.First brake silpper 2, second brake silpper 8 is corresponding between electric machine casing to be provided with on motor housing 6 and electric motor end cap 10 that the first brake strip 1 and the second brake strip 9, two brake strips are pasted on electric machine casing respectively.
With reference to the accompanying drawings 1, motor is normal operation when being energized: when being energized at motor stator 5, the electronics winding of motor produces electromagnetic force, the left and right sides of rotor 4 can produce the magnetic attraction force of attraction first brake silpper 2 and the second brake silpper 8 under the effect of motor stator 5, this magnetic attraction force overcomes first Compress Spring 3 at two ends and the elastic force of the second Compress Spring 7 and the first brake silpper 2 and the second brake silpper 8 is adsorbed (by arrow direction in figure) in the left and right sides of rotor 4 simultaneously, now the first brake strip 1 and the second brake strip 9 and clamp their the first brake silpper 2 and motor housing 6 respectively and create gap between the second brake silpper 8 and electric motor end cap 10, now motor shaft just energy normal rotation, hoisting and declining of electric block can be realized.Now because two brake silppers are inhaled on rotor and amount of force equal direction contrary simultaneously, therefore the bearing at two ends is not by axial force, also can not cause rocking of motor.
With reference to the accompanying drawings 2, the on-position of motor in dead electricity situation: when motor stator 5 dead electricity, the electromagnetic force that the electronics winding of motor produces disappears, namely the magnetic attraction force of rotor 4 left and right sides disappears, now the first brake silpper 2 and the second brake silpper 8 are pushed to (in by figure arrow direction) motor housing 6 and electric motor end cap 10 respectively simultaneously respectively and are clamped the first middle brake strip 1 and the second brake strip 9 respectively by first Compress Spring 3 at two ends and the second Compress Spring 7 under the effect of elastic force, and create the frictional force that rotor 4 is stopped operating simultaneously, now motor shaft can not rotate, namely the electromagnetic force of electric block and two brakings of frictional force are achieved.Now because two brake silppers press to motor housing and electric motor end cap respectively, and amount of force equal direction is contrary, therefore the bearing at two ends is not also by axial force, and can not cause rocking of motor, motor operates steadily, and achieves safer more reliable function.
Claims (2)
1. one kind realizes the electric block synchronous machine of two braking, comprise motor stator, rotor, motor shaft and electric machine casing, described electric machine casing comprises motor housing and electric motor end cap, described motor shaft is through rotor, it is characterized in that: the rotor two ends on described motor shaft are respectively equipped with the first Compress Spring and the second Compress Spring, two Compress Springs are free to slide on rotor, motor shaft outside the first described Compress Spring and the second Compress Spring is respectively equipped with again the first brake silpper, second brake silpper, the section that two brake silppers match with motor shaft is provided with spline and the keyway of transmitting torque, two brake silppers are free to slide on motor shaft, the first described brake silpper, second brake silpper is corresponding between electric machine casing is provided with the first brake strip and the second brake strip, two brake strips are pasted on electric machine casing respectively, when described motor obtains electric, stator winding due to motor produces the effect of electromagnetic force, overcome the elastic force impact that two Compress Springs produce, two brake silppers being respectively in rotor both sides are slided toward rotor direction, makes two between brake silpper and electric machine casing, to produce gap, during motor dead electricity, the axial gapless of rotor, first Compress Spring and second Compress Spring at motor shaft two ends contact the first brake silpper and the second brake silpper respectively, two brake silppers contact with electric machine casing with the second brake strip respectively by the first brake strip again, realize two brakings of electromagnetic force and frictional force.
2. according to the electric block synchronous machine of the two braking of the realization described in claim 1, it is characterized in that: when described motor obtains electric, two brake silppers being positioned at motor shaft both sides are contrary to the absorption affinity equal and opposite in direction in rotor direction, two rolling bearings being positioned at motor shaft two ends affect without axial force, motor operates steadily, and can not produce and rock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410585173.4A CN104300756A (en) | 2014-10-28 | 2014-10-28 | Electric hoist synchronous motor with double-braking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410585173.4A CN104300756A (en) | 2014-10-28 | 2014-10-28 | Electric hoist synchronous motor with double-braking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104300756A true CN104300756A (en) | 2015-01-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410585173.4A Pending CN104300756A (en) | 2014-10-28 | 2014-10-28 | Electric hoist synchronous motor with double-braking function |
Country Status (1)
| Country | Link |
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| CN (1) | CN104300756A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0728906A1 (en) * | 1995-02-21 | 1996-08-28 | Aliade | Electric motor with zero current braking device |
| CN2574292Y (en) * | 2002-10-24 | 2003-09-17 | 温岭市五龙电机厂 | Braking device for motor |
| CN202721552U (en) * | 2012-08-15 | 2013-02-06 | 奉化市微分电机有限公司 | Loss of power braking structure of motor |
| CN203740942U (en) * | 2014-03-11 | 2014-07-30 | 上海德益轻型起重机有限公司 | Friction transmission overload slipping protection system for electric chain hoist |
| CN204118993U (en) * | 2014-10-28 | 2015-01-21 | 上海德益轻型起重机有限公司 | Realize the electric block synchronous machine of two braking |
-
2014
- 2014-10-28 CN CN201410585173.4A patent/CN104300756A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0728906A1 (en) * | 1995-02-21 | 1996-08-28 | Aliade | Electric motor with zero current braking device |
| CN2574292Y (en) * | 2002-10-24 | 2003-09-17 | 温岭市五龙电机厂 | Braking device for motor |
| CN202721552U (en) * | 2012-08-15 | 2013-02-06 | 奉化市微分电机有限公司 | Loss of power braking structure of motor |
| CN203740942U (en) * | 2014-03-11 | 2014-07-30 | 上海德益轻型起重机有限公司 | Friction transmission overload slipping protection system for electric chain hoist |
| CN204118993U (en) * | 2014-10-28 | 2015-01-21 | 上海德益轻型起重机有限公司 | Realize the electric block synchronous machine of two braking |
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Application publication date: 20150121 |