CN108683297A - A kind of motor of with brake mechanism - Google Patents
A kind of motor of with brake mechanism Download PDFInfo
- Publication number
- CN108683297A CN108683297A CN201810522785.7A CN201810522785A CN108683297A CN 108683297 A CN108683297 A CN 108683297A CN 201810522785 A CN201810522785 A CN 201810522785A CN 108683297 A CN108683297 A CN 108683297A
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- CN
- China
- Prior art keywords
- motor
- horizontal segment
- output shaft
- brake
- spider
- 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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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a kind of motors of with brake mechanism,It include shell,Head cover and bottom cover,Motor is provided in the installation cavity,The brake block is compressed on the brake disc by the stop nut,The brake block includes spider and butterfly piece,The butterfly piece shares six,Six butterfly pieces are circumferentially equidistantly connected on the spider,The angle formed between adjacent two panels butterfly piece is 60 °,Double flat formula holes are offered on the spider,The output shaft is passed through by double flat formula holes,When the output shaft rotates,The spider rotation can be driven,To drive six butterfly piece rotations,The butterfly piece includes first horizontal segment,Tilting section and the second horizontal segment,The first horizontal segment and the second horizontal segment are mutually parallel and the first horizontal segment is located at the top of second horizontal segment,Described beveled end one end is connected in the first horizontal segment,The other end is connected on second horizontal segment.
Description
Technical field
The invention mainly relates to technical field of motors, more particularly to a kind of motor of with brake mechanism.
Background technology
Motor realizes deceleration generally by level-one V belt translation.Some motors with cutting function include mainly branch
Seat is fixed on bearing and is used for the motor of driving, the belt that one end is connected with the output shaft of motor, the other end phase with belt
Company and the driving wheel accordingly rotated and the rotating blade being fixed in driving wheel shaft.
Under normal circumstances, these motors for being used to cut are when cutting operation needs to shut down on the way, even if user cuts off electricity
Source, rotating blade cannot be satisfied the requirement of safety standard, when serious very because the effect of inertia force can still run at high speed a period of time
Personal injury can extremely be caused.According to the requirement of security technique standard, cutter device need to stop turning in the 3s after cutting off the power
It is dynamic, therefore special brake gear need to be installed.Brake gear is generally divided into mechanical brake and electromagnetic brake.Wherein, conventional
Mechanical brake structure need to be generally mounted on driven pulley, and structure is complex；Then there is unstable, cost of braking in electromagnetic brake
The shortcomings of higher.
Invention content
In view of the deficienciess of the prior art, the present invention is intended to provide a kind of motor of with brake mechanism, using to motor
The mode that output shaft brakes realizes brake function by the frictional force centrifuged between butterfly friction member and brake disc.
To achieve the above object, the present invention provides the following technical solutions：
A kind of motor of with brake mechanism includes shell, head cover and bottom cover, and the head cover and bottom cover cover respectively is located at institute
State the top and bottom of shell, the shell is a hollow shell, and inner hollow forms installation cavity, and by the head cover and
Bottom cover seals the installation cavity, and motor is provided in the installation cavity, and the motor has output shaft, driven by the motor
Dynamic output shaft rotation, has been arranged brake disc and brake block on the output shaft, and the brake disc is fixed by screws in described
On motor, stop nut is arranged on the output shaft, the brake block is compressed on the brake disc by the stop nut
On, the brake block includes spider and butterfly piece, and the butterfly piece shares six, and six butterfly pieces circumferentially equidistantly connect
On the spider, the angle formed between adjacent two panels butterfly piece is 60 °, and double flat formulas are offered on the spider
Hole, the output shaft are passed through by double flat formula holes, when the output shaft rotates, the spider can be driven to rotate, to
Six butterfly piece rotations are driven, the butterfly piece includes first horizontal segment, tilting section and the second horizontal segment, the first level
Section and the second horizontal segment are mutually parallel and the first horizontal segment is located at the top of second horizontal segment, described beveled end one end
It is connected in the first horizontal segment, the other end is connected on second horizontal segment, when the brake block is pressed together on brake disc
When surface, second horizontal segment is adjacent on the brake disc.
As an improvement of the present invention, the brake block is made of spring steel, its own has elasticity.
As a preference of the present invention, the mounting groove of annular is formd on the stop nut, it is solid in the mounting groove
Determine permanent magnet.
As an improvement of the present invention, bearing is connected on outer wall on the housing, the outer casing supporting is in the bearing
On.
As a further improvement on the present invention, the output shaft extends in the outside of shell across head cover, in the output
Axis, which extends on the part outside shell, has been arranged speed reducer, and described speed reducer one end is connected with the output shaft, other end connection
Drive shaft, driving wheel is arranged in the drive shaft, in the driving wheel centrally through the fixed rotating blade of wheel shaft.
Compared with the prior art, the advantages of the present invention are as follows：When motor is cut off the power, with the reduction of motor speed,
The component for the centrifugal force that brake block generates when rotating is less than pretightning force, and brake block returns to initial position, and frictional force will produce at this time
Huge resistance prevents rotor from remaining in operation due to what inertia force generated.Frictional force overcomes inertia force to do work, in brake disc
A large amount of thermal energy is generated between brake block so that motor speed is rapidly reduced to 0, and frictional force becomes brake force at this time.Due to
The presence of brake force greatly reduces the time of motor stopping brake.Under normal circumstances, the down time of common undamped motor
For 6~8s, 1~2s can be reached by increasing the down time after braking mechanism needed for motor, comply fully with the regulation of safety standard.
Description of the drawings
Fig. 1 is the overall structure diagram of the motor of with brake mechanism in the embodiment of the present invention；
Fig. 2 is the internal structure explosive view of the motor of with brake mechanism in the embodiment of the present invention；
Fig. 3 is in signal when on-position for the motor brake disk and brake block of with brake mechanism in the embodiment of the present invention
Figure；
Fig. 4 is in schematic diagram when discrete state for brake disc in Fig. 3 with brake block；
Fig. 5 is the overall structure diagram of the brake block of the motor of with brake mechanism in the embodiment of the present invention；
Fig. 6 is the structural schematic diagram of monolithic butterfly piece in Fig. 5.
Specific implementation mode
The embodiment of the motor of with brake mechanism in the present invention is described further with reference to attached drawing.
As shown in the picture, the present embodiment is a kind of motor of with brake mechanism, includes shell 1, head cover and bottom cover 3, top
Lid and bottom lid covers the top and bottom for being located at shell respectively, which is a hollow cylindrical shell, and inner hollow is formed
Installation cavity, and by shell and head cover and bottom cover together sealed installation cavity, motor 4, motor are provided in the installation cavity
Specifications parameter be：Motor model:0048GC；Rated voltage/frequency:240V/50Hz；Rated input power/W:1800；It is specified
Rotating speed/rmin:17500；Group/Ω in motor:4.8.
Motor itself has output shaft 41 (motor shaft), and when starting motor, which can be under the driving of motor
Quick rotation occurs, brake disc 5 and brake block 6 have been arranged on output shaft, the fixed holder 7 on the end face of motor is being stopped
Several threaded holes are circumferentially opened up on hull, the threaded hole of quantity, the threaded hole on brake disc such as have also opened up on holder
With the threaded hole face on holder, brake disc can be fixed on holder by the screw 8 being threaded through in these threaded holes,
The center of brake disc opens up centre bore, and the output shaft of motor can be passed through from the centre bore, and axis is arranged in centre bore
It holds, thus, it is possible to which so that the output shaft of motor is freely rotatable in centre bore without driving brake disc to follow output shaft one
Rotation is played, stop nut 9 is also arranged on output shaft, stop nut is used to brake block being pressed on brake disc, export
External screw thread is opened up in a distance in axis, stop nut is threaded on external screw thread and when stop nut is rotated
When force effect, it can be rotated around this section of external screw thread, axial movement is thus done on output shaft.It brakes in stop nut direction
The side of piece is formed with the mounting groove of a ring shape, fixed permanent magnet, that is, magnet in mounting groove, the effect of permanent magnet be for
Reduce vibration when brake block is detached from brake disc, reason can by permanent magnet when the moment of brake disk detachment brake disc
Thus adsorption force, the part brake block that liquidated reduce vibration to the impact force of stop nut.Brake block is by spring steel
At its own has elasticity, and can be by magnet adsorption, and brake disc is then using high intensity, the Steel material system of high-wearing feature
At brake block includes spider 61 and butterfly piece 62, and spider is a circular discs, and butterfly piece shares six, six butterfly piece edges
Circumferential to be equidistantly connected on the outer edge of spider, the angle formed between adjacent two panels butterfly piece is 60 °, in spider
Center on offer double flat formula holes 611, output shaft is passed through by double flat formula holes, when output shaft rotates, can drive center
Disk rotates, and then six butterfly pieces is driven to be rotated around spider, and butterfly piece includes first horizontal segment 621,622 and of tilting section
Second horizontal segment 623, the first horizontal segment and the second horizontal segment are mutually parallel and the first horizontal segment is located at described second
The top of horizontal segment, described beveled end one end are connected in the first horizontal segment, and the other end is connected to second horizontal segment
On, when the brake block is pressed together on brake panel surface, second horizontal segment is adjacent on the brake disc.
The parameter of monolithic butterfly piece is as follows:Thickness is 0.6mm；Precompressed stroke is 2mm, the i.e. maximum shape of Elastic Steel butterfly piece
Time-varying amplitude is 2mm；The length D of first horizontal segment1For 21mm；Barycenter quality G is 2.08g, and so-called barycenter refers to butterfly here
The position of centre of gravity of piece, theoretical barycenter radius R1For 24.9mm；Barycenter arm of force L1For 3.5mm；Survey pre-pressing force F1For 50N；Brake
Friction coefficient between piece and brake disc is that f is 0.2；Circle diameter D where frictional force2For 62mm.Theoretical drag square is (also referred to as most
Big static friction torque) be
T1=(F1·D2F)/1000=(50620.2)/1000=0.62Nm, actual measurement moment of resistance T2For
0.79N·m。
As shown in the picture, due to the shape design of butterfly piece so that when butterfly piece is in rotation, will produce slanting centrifugation
Power, the centrifugal force is while driving entire butterfly piece towards away from the movement of spider direction, moreover it is possible to provide and export to butterfly piece
The homoaxial active force of axis (active force is equivalent to the component of centrifugal force), the component of centrifugal force can drive butterfly piece along output shaft
It moves up, when the component of the centrifugal force is equal to quality of butterfly piece itself, butterfly piece can be made to progressively disengage brake disc,
The momentary status that centrifugal force component is equal to butterfly tablet quality is referred to as critical condition.When the quality of butterfly piece is 2.08g, experiment
Personnel have carried out measuring and calculating sampling to each item data of the critical condition, and it is as follows to obtain critical condition parameter：
The critical voltage of motor is 145V, and the critical current of motor is 30.2A, and the critical speed of motor is 12180 turns every
Minute, it is 1.89 Ns of rice thus to calculate critical condition motor output torque, according to transient equilibrium principle, monolithic under critical condition
Butterfly piece centrifugal force F2For
F2=[(N1·(D2- D1)]/(2·L16)=48.8N
According to above formula, the anti-theoretical rotational speed for pushing away motor is 9275r/min, it can be seen that, it tests the motor speed measured and wants
Much larger than its theoretical rotational speed, this shows that the design parameter of the butterfly brake disc meets operation item of the motor under extremity
Part, structure design safe clearance are larger.According to the use environment of motor:Even if the rotating blade that motor is driven encounters very
Big resistance, when load is very big, motor speed is relatively low, brake block remains able to be detached from brake disc without extra duty operating.
And the specific connection relation of motor and external agency is as shown in the picture, is connected to bearing 10 on outer wall on the shell,
Shell is entirely supported on bearing.Output shaft passes through head cover to extend in the outside of shell, and the portion outside shell is extended in output shaft
It is arranged speed reducer 11 on point, described speed reducer one end is connected with the output shaft, and the other end is connected to drive shaft 12, effect
It is that the too fast rotating speed of motor output shaft is converted into the slower rotating speed of drive shaft, principle is also relatively simple, is arranged in speed reducer
Gear wheel and pinion gear, motor output shaft are connected to the center of pinion gear, and drive shaft is connected to the center of gear wheel, pinion gear
It is engaged with gear wheel, the gear ratio and radius ratio of pinion gear and gear wheel are set according to actual needs, but total deceleration principle is
When pinion gear rotation N circles under output shaft drive, the gear ratio of pinion gear and gear wheel is set as X, then gear wheel is same
NX circles are only had rotated in the sample time, this completes moderating processes.Driving wheel is connected to by synchronous belt 15 in the drive shaft
13, in the driving wheel centrally through 14 fixed rotating blade 16 of wheel shaft.
Pass through stop nut and dished brake itself bullet between brake block and brake disc when motor remains static
There are pretightning forces for property.When artificially stirring rotor, to overcome due to frictional force caused by pretightning force, it appears especially painstaking.
After electrical power starts and reaches certain rotating speed, prodigious centrifugal force can be all generated per a piece of " petal " on brake block；When from
When mental and physical efforts overcome stiction and its own gravity between brake block and brake disc enough, brake block will be detached from vertical direction
Brake disc, at this time frictional force no longer do work.When motor is cut off the power, with the reduction of motor speed, the component of centrifugal force is small
In pretightning force, brake block returns to initial position again, and frictional force will produce huge resistance at this time, prevents rotor due to used
Property power generate remain in operation.Frictional force overcomes inertia force to do work, and a large amount of thermal energy is generated between brake disc and brake block, is made
It obtains motor speed and is rapidly reduced to 0, frictional force becomes brake force at this time.Due to the presence of brake force, greatly reduces motor and stop
The time of vehicle braking.Under normal circumstances, undamped down time is 6-8s, when increasing after the braking mechanism parking needed for motor
Between can reach 1-2s, comply fully with the regulation of safety standard.
The above makes the preferred embodiment of the present invention, does not depart from this hair for those of ordinary skill in the art
Under the premise of bright principle, several variations and modifications can also be made, these also should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of motor of with brake mechanism, it is characterised in that：Include shell, head cover and bottom cover, the head cover and bottom cover divide
It Gai not be located at the top and bottom of the shell, the shell is a hollow shell, and inner hollow forms installation cavity, and by
The head cover and bottom cover seal the installation cavity, and motor is provided in the installation cavity, and the motor has output shaft, by
The motor driving output shaft rotation, has been arranged brake disc and brake block, the brake disc passes through screw on the output shaft
It is fixed on the motor, stop nut is arranged on the output shaft, the brake block is compressed on by the stop nut
On the brake disc, the brake block includes spider and butterfly piece, and the butterfly piece shares six, and six butterfly pieces are circumferentially
It is equidistantly connected on the spider, the angle formed between adjacent two panels butterfly piece is 60 °, is opened on the spider
Equipped with double flat formula holes, the output shaft is passed through by double flat formula holes, when the output shaft rotates, can drive the spider
Rotation, to drive six butterfly piece rotations, the butterfly piece includes first horizontal segment, tilting section and the second horizontal segment, institute
It states first horizontal segment and the second horizontal segment is mutually parallel and the first horizontal segment is located at the top of second horizontal segment, it is described
Beveled end one end is connected in the first horizontal segment, and the other end is connected on second horizontal segment, when the brake block pressure
It closes when braking panel surface, second horizontal segment is adjacent on the brake disc.
2. the motor of with brake mechanism according to claim 1, it is characterised in that：The brake block is made of spring steel,
Its own has elasticity.
3. the motor of with brake mechanism according to claim 1, it is characterised in that：Ring is formd on the stop nut
The mounting groove of shape, the fixed permanent magnet in the mounting groove.
4. the motor of with brake mechanism according to claim 1, it is characterised in that：It is connected on outer wall on the housing
Bearing, the outer casing supporting is on the bearing.
5. the motor of with brake mechanism according to claim 4, it is characterised in that：The output shaft is extended in across head cover
The outside of shell extends on the part outside shell in the output shaft and has been arranged speed reducer, described speed reducer one end with it is described
Output shaft is connected, and the other end is connected to drive shaft, and driving wheel is arranged in the drive shaft, in the driving wheel centrally through wheel
The fixed rotating blade of axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810522785.7A CN108683297A (en) | 2018-05-28 | 2018-05-28 | A kind of motor of with brake mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810522785.7A CN108683297A (en) | 2018-05-28 | 2018-05-28 | A kind of motor of with brake mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108683297A true CN108683297A (en) | 2018-10-19 |
Family
ID=63808623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810522785.7A Pending CN108683297A (en) | 2018-05-28 | 2018-05-28 | A kind of motor of with brake mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108683297A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122100A (en) * | 2022-07-07 | 2022-09-30 | 深圳市华创电机科技有限公司 | High-stability ripple type torque motor for turning and milling composite machine tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2904621Y (en) * | 2006-01-09 | 2007-05-30 | 苏州金莱克家用电器有限公司 | Lawn mower brake |
| CN104170590A (en) * | 2013-05-27 | 2014-12-03 | 苏州金莱克精密机械有限公司 | Electric tool with improved brake structure and electric motor of electric tool |
| CN105864322A (en) * | 2016-06-06 | 2016-08-17 | 苏州金莱克精密机械有限公司 | Centrifugal brake mechanism of motor |
| CN205946605U (en) * | 2016-08-30 | 2017-02-15 | 淮安荣宇机械有限公司 | Electric mower's drive mechanism |
| CN107683673A (en) * | 2017-08-31 | 2018-02-13 | 德清菁英信息科技有限公司 | A kind of novel herbicidal machinery |
-
2018
- 2018-05-28 CN CN201810522785.7A patent/CN108683297A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2904621Y (en) * | 2006-01-09 | 2007-05-30 | 苏州金莱克家用电器有限公司 | Lawn mower brake |
| CN104170590A (en) * | 2013-05-27 | 2014-12-03 | 苏州金莱克精密机械有限公司 | Electric tool with improved brake structure and electric motor of electric tool |
| CN105864322A (en) * | 2016-06-06 | 2016-08-17 | 苏州金莱克精密机械有限公司 | Centrifugal brake mechanism of motor |
| CN205946605U (en) * | 2016-08-30 | 2017-02-15 | 淮安荣宇机械有限公司 | Electric mower's drive mechanism |
| CN107683673A (en) * | 2017-08-31 | 2018-02-13 | 德清菁英信息科技有限公司 | A kind of novel herbicidal machinery |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122100A (en) * | 2022-07-07 | 2022-09-30 | 深圳市华创电机科技有限公司 | High-stability ripple type torque motor for turning and milling composite machine tool |
| CN115122100B (en) * | 2022-07-07 | 2023-12-12 | 深圳市华创电机科技有限公司 | High-stability ripple type torque motor for turning and milling composite machine tool |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181019 |
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