CN207853686U - A kind of overspeed protection mechanism - Google Patents
A kind of overspeed protection mechanism Download PDFInfo
- Publication number
- CN207853686U CN207853686U CN201820132601.1U CN201820132601U CN207853686U CN 207853686 U CN207853686 U CN 207853686U CN 201820132601 U CN201820132601 U CN 201820132601U CN 207853686 U CN207853686 U CN 207853686U
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- Prior art keywords
- overrunning
- rocking arm
- mounting plate
- wheel
- microswitch
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Abstract
The utility model is related to a kind of overspeed protection mechanisms,Including shaft,It overruns gear,It overruns driving wheel,It overruns stopping wheel,Microswitch,Rocking arm,It overruns and starts head,Dynamic clamping head and quiet clamping head,Mounting plate and rack,It overruns and locking groove is set on stopping wheel,Protrusion is stirred in setting on driving wheel of overrunning,Microswitch is connected electrically on motor feed circuit,Wheel and rack of overrunning engages,Microswitch is installed on a mounting board,The middle part rotational installation of rocking arm is on a mounting board,It overruns and starts one end that head is mounted on rocking arm,Dynamic clamping head and quiet clamping head is mounted between rocking arm and mounting plate,The other end of rocking arm is provided with clamp,When rocking arm swing makes clamp be caught in locking groove,Rocking arm touches microswitch contact to block the power supply circuit of motor,Braking is realized in the cooperation of brake tooth wheel and rack,Braking is rapider,More directly,It is more economical,Improve service life,Motor is set to power off using the cooperation and microswitch of clamp and locking groove,Form double brake,Braking effect is more preferably more reliable.
Description
Technical field
The utility model belongs to brake apparatus technical field, more particularly to a kind of overspeed protection mechanism.
Background technology
In the modern life, it is often necessary to which carrying or mobile object, with the reach of science, motor can as one kind
The power source for converting electrical energy into kinetic energy is often used when carrying and mobile object.And in order to ensure safety, it will usually
Brake apparatus is used, when motor rotations are more than defined maximum speed namely when object speed is more than specified value, to be used for
So that motor is powered off and is stopped operating, to reduce the speed of article movement or be allowed to static.
The prior art can be switched by the normally-closed contact on overdrive makes motor power off, and so that motor is stopped to cut off the power
Rotation stop is dynamic, meanwhile, the mechanical stop component on overdrive can push down track, and generate friction with track makes machine by frictional force
It is out of service.However prior art mechanical protection braking model is unstable, braking is unreliable, and is easily damaged track and the guarantor that overruns
Brake component on protection unit, service life is low, there are security risk, once mechanical protection component failure, then braking effect lose
It loses.
Utility model content
The utility model provides a kind of overspeed protection mechanism, is realized to motive objects by the cooperation for wheel and rack of overrunning
Braking of the body relative to track improves the efficiency in terms of mechanical braking, keeps braking rapider, more direct, more economical durable, and energy
The service life of track and the utility model is improved, and by theory of mechanics in the way of being electrically combined, realizes dual system
It is dynamic, so that the utility model is in the case where the effect of braking is more preferable even mechanical or electrical one-sided failure, this
Utility model still has braking function, braking more reliable.
The utility model is achieved through the following technical solutions：A kind of overspeed protection mechanism, it is characterised in that：Including shaft,
Overrun gear, driving wheel of overrunning, stopping wheel of overrunning, microswitch, rocking arm, overrun start head, dynamic clamping head and quiet clamping head, be mounted on movement
Mounting plate on object and the rack on mobile object traveling track are provided with stop on the stopping wheel of overrunning
Slot is provided on the driving wheel of overrunning and stirs protrusion, and the microswitch is connected electrically in the electricity that power is provided to mobile object
On the power supply circuit of machine；
It is described to overrun stopping wheel and the drive wheel group of overrunning is turned at trigger assembly and with the gear of overrunning by described
Axis is rotated synchronously mounted on the both sides of the mounting plate, and the gear of overrunning is engaged with the rack；
The microswitch and the rocking arm be installed on the mounting plate and with the trigger assembly homonymy, it is described to shake
The medium position of arm is rotatably installed in by rotational pin on the mounting plate, rocking arm setting the microswitch with it is described
Between trigger assembly, described overrun starts one end that head is mounted on the rocking arm, and the driving wheel rotation of overrunning can make described
It stirs protrusion and stirs the startup head of overrunning to drive the rocking arm to swing, the dynamic clamping head and quiet clamping head is mounted on the rocking arm and institute
The rocking arm reset swung with driving between mounting plate is stated, the other end of the rocking arm is provided with the card coordinated with the locking groove
Head, when rocking arm swing makes the clamp be caught in the locking groove, the rocking arm touches the microswitch contact to cut simultaneously
The power supply circuit of the disconnected motor.
Further, further include bearing in order to preferably realize the utility model, the shaft is rotated by the bearing
It is plugged on the mounting plate.
Further, in order to preferably realize the utility model, axle sleeve, the axle sleeve set are provided on the gear of overrunning
It is connected in the shaft and by locking pin locked.
Further, in order to be better achieved the utility model, it is described overrun driving wheel and the stopping wheel of overrunning it is equal
It is connected in the shaft by flat key and is compressed by housing screw and compress gasket.
Further, described to overrun that start head include idler wheel and screw pin in order to be better achieved the utility model, it is described
Idler wheel is rotatably installed in by the screw pin on the rocking arm.
Further, in order to which the utility model is better achieved, the dynamic clamping head and quiet clamping head is tension spring, one end of the tension spring
It wears and is connected on the tension spring screw being bolted on the rocking arm, the other end of the tension spring is worn to be connected on and is bolted on the mounting plate
On tension spring screw.
Further, further include switch fixinig plate in order to which the utility model is better achieved, the microswitch passes through spiral shell
Silk is mounted on the switch fixinig plate, and the switch fixinig plate is mounted on by switching fixinig plate screw on the mounting plate,
The tension spring screw being bolted on the mounting plate passes through the switch fixinig plate.
Further, in order to which the utility model is better achieved, the side of the mounting plate is provided with countersunk screw hole, institute
The other side for stating mounting plate is provided with via, and the via is waist-shaped hole.
Further, in order to which the utility model is better achieved, the cross sectional shape of the driving wheel of overrunning substantially is in positive five
Side shape, each edge of the regular pentagon are substantially in wave, and the vertex of the regular pentagon, which is formed, described stirs protrusion.
Further, in order to the utility model, the arc-shaped wave crest shape in each vertex of the regular pentagon is better achieved
And with the equal rounding off in adjacent both sides.
The utility model has the advantages that compared to the prior art：
(1) the utility model by shaft will overrun driving wheel and stopping wheel of overrunning composition trigger assembly and overrun tooth
Wheel rotates synchronously installation on a mounting board, and gear of overrunning is engaged with the rack being installed on mobile object traveling track, above-mentioned peace
Loading board is mounted on mobile object, and when mobile object is advanced along track, gear of overrunning rotates on rack, to band
Dynamic overrun stopping wheel and driving wheel of overrunning synchronous rotation, are arranged on driving wheel of overrunning and stir protrusion, when driving wheel rotation of overrunning
When, the overrunning startup head on rocking arm can be stirred by stirring protrusion, and the medium position of above-mentioned rocking arm passes through rotational pin
Rotational installation on a mounting board, and is also equipped with the power supply circuit with the motor for providing power to mobile object on a mounting board
The microswitch of electrical connection is provided with locking groove on above-mentioned stopping wheel of overrunning, and the other end of above-mentioned rocking arm is provided with clamp,
And dynamic clamping head and quiet clamping head is provided between mounting plate and rocking arm, when the speed that object is advanced along track be in a setting value it
When lower, the rotating speed of above-mentioned driving wheel of overrunning is moderate, and above-mentioned protrusion of stirring stirs the overrun torque for starting head and above-mentioned elasticity
The elastic force of return unit resets after driving rocking arm to swing certain angle, when object is more than setting value, mistake along the speed that track is advanced
The rotating speed of fast driving wheel is excessive, elastic force of the torque more than dynamic clamping head and quiet clamping head that protrusion stirs startup head of overrunning is stirred, at this point, above-mentioned
Clamp will be stuck in above-mentioned locking groove, using mechanical system so that overrunning stopping wheel and gear of overrunning no longer rotates, and
Rocking arm will touch microswitch and motor feed circuit is powered off, motor stalling, using the cooperation for wheel and rack of overrunning with
And the mode of disconnection motor feed circuit realizes that braking effect is more preferably more reliable to the double brake of mobile object, service life
Longer, more economical durable, in the case of even mechanical or electrical one-sided failure, the utility model still has braking
Function, braking are more reliable；
(2) shaft in the utility model rotates grafting on a mounting board by bearing, so that above-mentioned shaft, overrunning
Gear, the rotation of overrun stopping wheel and driving wheel of overrunning are more flexible；
(3) parts in the utility model are linked together by pin or screw, be easily installed dismounting with
And repair and replacement；
(4) overrunning in the utility model starts head and is made of idler wheel and screw pin, when speed is moderate, idler wheel energy
Enough external peripheral surfaces along driving wheel of overrunning roll, and to enhance stationarity when the use of the new type normal use, reduce it
The probability of failure；
(5) side of the mounting plate in the utility model is provided with countersunk screw hole, and the other side is provided with via, limits
Hole is waist-shaped hole, in this way, adjusting installation site of the use of the new type on mobile object convenient for user, easily facilitates installation.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of the overspeed protection mechanism in the utility model；
Fig. 2 is the explosive view of overspeed protection mechanism shown in FIG. 1；
Fig. 3 is structural schematic diagram when overspeed protection mechanism in the utility model is in arrested state；
Fig. 4 is the mounting structure schematic diagram of the gear of overrunning in the utility model；
Fig. 5 is the mounting structure schematic diagram of the driving head of overrunning in the utility model；
Fig. 6 is the structural schematic diagram of the mounting plate in the utility model；
Fig. 7 is the structural schematic diagram of the driving wheel of overrunning in the utility model；
Fig. 8 is the structural schematic diagram of the rocking arm in the utility model；
Fig. 9 is the structural schematic diagram of the stopping wheel of overrunning in the utility model.
1- shafts in figure；2- overruns gear；201- axle sleeves；3- overruns driving wheel；301- stirs protrusion；4- overruns stop
Wheel；401- locking grooves；5- rocking arms；501- clamps；6- microswitches；7- idler wheels；8- screw pins；9- dynamic clamping head and quiet clamping heads；10- is installed
Plate；11- rotational pins；12- bearings；14- locking pins；15- flat keys；16- switchs fixinig plate.
Specific implementation mode
It, below will be to the technology of the utility model to keep the purpose of this utility model, technical solution and advantage clearer
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
Embodiment 1：
In the present embodiment, a kind of overspeed protection mechanism, including shaft 1, gear 2 of overrunning, driving wheel 3 of overrunning, stop of overrunning
Wheel 4, Rocker arm 5, microswitch 6, overrunning starts head, dynamic clamping head and quiet clamping head 9, mounting plate 10 and rack (being not drawn into figure).
Above-mentioned mounting plate 10 is mounted on mobile object, and specifically, the side of the mounting plate 10 is provided with countersunk screw hole,
The other side is provided with via, limits the via as waist-shaped hole, user can utilize sunk screw to pass through countersunk screw hole that will pacify
The side of loading board 10 is mounted on mobile object, is then mounted on the other side of mounting plate 10 across via using plain screw
On mobile object, the setting of waist-shaped hole, can convenient for users to 10 installation site of mounting plate is micro-adjusted as needed, with
Easily facilitate installation.
Above-mentioned rack is mounted on mobile object traveling track, and above-mentioned gear 2 of overrunning is rotatably installed in above-mentioned by shaft 1
10 centre position of mounting plate is simultaneously engaged with above-mentioned rack, in this way, when mobile object is advanced in orbit, gear 2 of overrunning
It will be rolled on above-mentioned rack and shaft 1 is driven to rotate synchronously.In the present embodiment, by above-mentioned driving wheel 3 and the short stopping excessively of overrunning
Driving wheel 4 is coaxially mounted to be located at two sides of mounting plate 10 in above-mentioned shaft 1 and with above-mentioned gear 2 of overrunning, preferably, by upper
The position that stopping wheel 4 of overrunning is arranged close to mounting plate 10 is stated, in this way, above-mentioned shaft 1 will drive above-mentioned 3 He of driving wheel of overrunning
Stopping wheel 4 of overrunning is rotated synchronously with gear 2 of overrunning.The triggering group of above-mentioned overrun driving wheel 3 and the composition stop of stopping wheel 4 of overrunning
Part.In the present embodiment, locking groove 401 is provided on above-mentioned stopping wheel 4 of overrunning.
Above-mentioned microswitch 6 and Rocker arm 5 be installed on above-mentioned mounting plate 10 and with above-mentioned trigger assembly homonymy, Er Qieshang
State Rocker arm 5 be arranged between trigger assembly and microswitch 6, limit the microswitch 6 be connected electrically in movement to mobile object carry
For in the power supply circuit of the motor of power.Specifically, the centre position of above-mentioned Rocker arm 5 is rotatably installed in above-mentioned by rotational pin 11
On mounting plate 10, above-mentioned overrun starts one end that head is mounted on above-mentioned Rocker arm 5, is provided in the other end of Rocker arm 5 and stops with above-mentioned
The clamp 501 of clamping braking is realized in the dynamic cooperation of slot 401.
In this implementation, it is provided on above-mentioned driving wheel 3 of overrunning and stirs protrusion 301, when object is advanced along track
It waits, above-mentioned gear 2 of overrunning rolls on rack and drives the rotation of driving wheel 3 of overrunning, during driving wheel 3 of overrunning rotates,
It overruns stirring protrusion 301 and will stir above-mentioned overrun and start head on driving wheel 3 so that above-mentioned Rocker arm 5 is swung.The present embodiment
In, above-mentioned dynamic clamping head and quiet clamping head 9 is mounted between above-mentioned Rocker arm 5 and mounting plate 10.
If Rocker arm 5 swing amplitude it is moderate (namely driving wheel 3 of overrunning stir protrusion 301 be applied on Rocker arm 5 dial
Power is moderate, namely overrun driving wheel 3 and gear 2 of overrunning the speed that rotating speed is moderate namely mobile object moves in orbit
Degree is less than preset value), after Rocker arm 5 swings certain angle, above-mentioned dynamic clamping head and quiet clamping head 9 will drive Rocker arm 5 to reset；If moved
The speed that animal body is advanced in orbit is greater than the set value, overrun at this time gear 2 and 3 rotating speed of driving wheel of overrunning it is excessive, stir convex
Rise 301 be applied to the active force overrun and started on head will be excessive, the even reply force effect of dynamic clamping head and quiet clamping head 9, Rocker arm 5 pendulum
Dynamic amplitude also will be very big, so that so that above-mentioned clamp 501 is caught in the locking groove 401 overrun on stopping wheel 4, utilize machinery
Principle applies resistance and by the cooperation of above-mentioned overrun gear 2 and rack to drive movement to the rotation of above-mentioned stopping wheel 4 of overrunning
Object is braked on traveling track.And the Rocker arm 5 can also touch 6 contact of above-mentioned microswitch to block electricity at this moment
The power supply circuit of machine, motor stalls.It is worth noting that, the contact in microswitch 6 in the present embodiment is normally closed touches
Head will be switched off when touching.
Using the above structure, the utility model can utilize theory of mechanics (cooperation of clamp 501 and locking groove 401) simultaneously
And electrical principle (motor feed circuit is disconnected by microswitch 6), the movement in orbit to mobile object is braked,
Braking effect is more preferable, even machinery or it is electrical in some failure, the utility model can still realize rotation, braking
It is relatively reliable.And braked using rack-and-pinion so that the braking effect of the utility model is more preferable, it is faster, more pass through
Help durable, and its service life is longer.
As a kind of specific implementation mode of the present embodiment, in the present embodiment, user can according to direction of travel and
The steering of rotating speed is selected in certain side of mounting plate 10 installation Rocker arm 5, overrunning starts head, dynamic clamping head and quiet clamping head 9 and microswitch
6.
Embodiment 2：
A kind of specific implementation mode of the present embodiment as embodiment 1 further includes bearing 12 in the present embodiment, in restriction
It states shaft 1 and rotates the centre position for being plugged on above-mentioned mounting plate 10 by above-mentioned bearing 12, in this way, can make shaft 1, overrun
Gear 2, the rotation of overrun driving wheel 3 and stopping wheel 4 of overrunning are more flexible.
Embodiment 3：
A kind of specific implementation mode of the present embodiment as above-described embodiment in the present embodiment, is overrun above-mentioned on gear 2
It is provided with axle sleeve 201, when installation, axle sleeve 201 is plugged in above-mentioned shaft 1, and is locked by locking pin 14, with this side
Formula, the gear 2 that will overrun are mounted in shaft 1, in order to which user assembles.
In the present embodiment, above-mentioned driving wheel 3 and the stopping wheel 4 of overrunning of overrunning is connected to above-mentioned shaft 1 by flat key 15
It is upper and compressed by housing screw mounted on 1 end of shaft and compress gasket, using this mounting means, in order to
User installs as needed replaces above-mentioned driving wheel 3 and the stopping wheel 4 of overrunning of overrunning.
In the present embodiment, it is tension spring to limit above-mentioned dynamic clamping head and quiet clamping head 9, and one end of the tension spring is worn to be connected on and is bolted on Rocker arm 5
Tension spring screw on, the other end of tension spring, which is worn, to be connected on the tension spring screw being bolted on mounting plate 10, by this method, easy to use
Person assembles and replaces tension spring.
Further include switch fixinig plate 16 in the present embodiment, above-mentioned microswitch 6 is installed on above-mentioned switch by screw compression
On fixinig plate 16, then the switch fixinig plate 16 is mounted on by switching fixinig plate screw on above-mentioned mounting plate 10, and it is above-mentioned
The tension spring screw being bolted on mounting plate 10 passes through switch fixinig plate 16.Mode successively so that microswitch 6 can consolidate and square
Just while being mounted on mounting plate 10 so that the structure of the utility model is compacter.
Embodiment 4：
The present embodiment is further qualified on the basis of the above embodiments, in the present embodiment, limits above-mentioned startup of overrunning
Head includes idler wheel 7 and screw pin 8, which is rotatably installed in by the screw pin 8 on Rocker arm 5.In this way, the drive that above-mentioned ought overrun
Driving wheel 3 rotate and drive stir protrusion 301 stir overrun start head when will directly with idler wheel 7 act on, due to overrun drive
The rotation of driving wheel 3 and the rotation of idler wheel 7 are in approximately the same plane in either two parallel planes, in this way, idler wheel 7 can reduce
Its surface and stir protrusion 301 and 3 circumferential surface of driving wheel of overrunning between frictional force, enhance the stabilization of the utility model
Property, extend its service life.
Embodiment 5：
A kind of specific implementation mode of the present embodiment as above-described embodiment in the present embodiment, limits above-mentioned driving of overrunning
The cross sectional shape of wheel 3 is substantially in regular pentagon, and each edge for limiting the regular pentagon is in wave, in this way, working as speed
When moderate, above-mentioned rollers 7 will be along the outer of driving wheel 3 of overrunning in the case where stirring the collective effect of protrusion 301 and tension spring
Circumferential surface rolls, in this way so that the operation that the utility model can more be stablized.And the vertex of above-mentioned regular pentagon will shape
Protrusion 301 is stirred at above-mentioned, preferably, each vertex (namely stirring protrusion 301) for limiting above-mentioned regular pentagon is arc-shaped
Wave crest shape and with the equal arc transition in adjacent both sides, further such that idler wheel 7 overrunning 3 external peripheral surface of driving wheel roll more
Steadily.
Certainly, driving wheel 3 of overrunning can also be other shapes, be opened as long as can stir above-mentioned overrun during realizing rotation
Dynamic head.
Rocker arm 5 in the present embodiment is substantially in crescent shape, one tip forms above-mentioned clamp 501, certainly above-mentioned to shake
Arm 5 may be set to be other shapes, as long as the function that can be realized above-mentioned swing, touch and block.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with the power
Subject to the protection domain that profit requires.
Claims (10)
1. a kind of overspeed protection mechanism, it is characterised in that：Including shaft, gear of overrunning, driving wheel of overrunning, stopping wheel of overrunning, micro-
Dynamic switch, rocking arm, overrunning starts head, dynamic clamping head and quiet clamping head, the mounting plate on mobile object and is mounted on mobile object
Rack on traveling track is provided with locking groove on the stopping wheel of overrunning, is provided on the driving wheel of overrunning and stirs protrusion,
The microswitch is connected electrically on the power supply circuit for the motor for providing power to mobile object；
It is described overrun stopping wheel and the drive wheel group of overrunning it is at trigger assembly and same by the shaft with the gear of overrunning
Step is rotatably installed in the both sides of the mounting plate, and the gear of overrunning is engaged with the rack；
The microswitch and the rocking arm be installed on the mounting plate and with the trigger assembly homonymy, the rocking arm
Medium position is rotatably installed in by rotational pin on the mounting plate, and the rocking arm is arranged in the microswitch and the triggering
Between component, described overrun starts one end that head is mounted on the rocking arm, and the driving wheel rotation of overrunning can make described stir
Protrusion stirs described overrun and starts head to drive the rocking arm to swing, and the dynamic clamping head and quiet clamping head is mounted on the rocking arm and the peace
It being resetted with the rocking arm that driving is swung between loading board, the other end of the rocking arm is provided with the clamp coordinated with the locking groove, when
When rocking arm swing makes the clamp be caught in the locking groove, it is described to block that the rocking arm touches the microswitch contact simultaneously
The power supply circuit of motor.
2. a kind of overspeed protection mechanism according to claim 1, it is characterised in that：Further include bearing, the shaft passes through
The bearing rotation is plugged on the mounting plate.
3. a kind of overspeed protection mechanism according to claim 2, it is characterised in that：It is provided with axis on the gear of overrunning
Set, the axle sleeve are socketed in the shaft and by locking pin locked.
4. a kind of overspeed protection mechanism according to claim 3, it is characterised in that：Driving wheel and the mistake of overrunning
Short stopping driving wheel is connected in the shaft by flat key and is compressed by housing screw and compress gasket.
5. a kind of overspeed protection mechanism according to any one of claim 1-4, it is characterised in that：The startup of overrunning
Head includes idler wheel and screw pin, and the idler wheel is rotatably installed in by the screw pin on the rocking arm.
6. a kind of overspeed protection mechanism according to any one of claim 1-4, it is characterised in that：The elastic reset
Part is tension spring, and one end of the tension spring, which is worn, to be connected on the tension spring screw being bolted on the rocking arm, and the other end of the tension spring is worn
It is connected on the tension spring screw being bolted on the mounting plate.
7. a kind of overspeed protection mechanism according to any one of claim 1-4, it is characterised in that：Further include that switch is solid
Stator, the microswitch are mounted on by screw on the switch fixinig plate, and the switch fixinig plate is by switching fixinig plate
Screw is mounted on the mounting plate, and the tension spring screw being bolted on the mounting plate passes through the switch fixinig plate.
8. a kind of overspeed protection mechanism according to any one of claim 1-4, it is characterised in that：The mounting plate
Side is provided with countersunk screw hole, and the other side of the mounting plate is provided with via, and the via is waist-shaped hole.
9. a kind of overspeed protection mechanism according to claim 1, it is characterised in that：The cross sectional shape of the driving wheel of overrunning
Substantially it is in regular pentagon, each edge of the regular pentagon is substantially in wave, and the vertex of the regular pentagon forms described dial
Dynamic protrusion.
10. a kind of overspeed protection mechanism according to claim 9, it is characterised in that：Each vertex of the regular pentagon
Arc-shaped wave crest shape and with the equal rounding off in adjacent both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820132601.1U CN207853686U (en) | 2018-01-25 | 2018-01-25 | A kind of overspeed protection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820132601.1U CN207853686U (en) | 2018-01-25 | 2018-01-25 | A kind of overspeed protection mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207853686U true CN207853686U (en) | 2018-09-11 |
Family
ID=63412624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820132601.1U Active CN207853686U (en) | 2018-01-25 | 2018-01-25 | A kind of overspeed protection mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207853686U (en) |
-
2018
- 2018-01-25 CN CN201820132601.1U patent/CN207853686U/en active Active
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