CN106115407A - The novel unidirectional Self-resetting limiter of speed that there is speed monitoring, can automatically trigger - Google Patents
The novel unidirectional Self-resetting limiter of speed that there is speed monitoring, can automatically trigger Download PDFInfo
- Publication number
- CN106115407A CN106115407A CN201610491844.XA CN201610491844A CN106115407A CN 106115407 A CN106115407 A CN 106115407A CN 201610491844 A CN201610491844 A CN 201610491844A CN 106115407 A CN106115407 A CN 106115407A
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- China
- Prior art keywords
- rope sheave
- friction pulley
- location structure
- wheel
- little friction
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/26—Positively-acting devices, e.g. latches, knives
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses and a kind of novel there is speed monitoring, the unidirectional Self-resetting limiter of speed that can automatically trigger, its base rotation is equipped with big friction wheel, little friction pulley it is rotatably equipped with on rope sheave, little friction pulley is rotated by the fixed part extended on its outer peripheral face and is assemblied on rope sheave, rope sheave rotates in little friction pulley and is equipped with location structure, the location torsion spring making location structure turn to fixed part it is provided with between location structure and rope sheave, location structure makes little friction pulley away from big friction wheel with the follower head elastic top press-fit of fixed part, triggering end it is convexly equipped with on location structure, it is hinged with on big friction wheel when big friction wheel engages with little friction pulley and pulls brake press plate to make it compress the connecting rod of rope sheave, connecting rod gap is located on brake press plate, connecting rod is the most spacing with the both sides of brake press plate to be coordinated, lifting release link it is convexly equipped with on little friction pulley.The braking of the present invention uses big friction wheel and little friction pulley, and once hypervelocity occurs in rope sheave, and two friction pulleys can moment occlusion.
Description
Technical field
The present invention relates to a kind of New Speed Limiter being used in elevator device, particularly relate to a kind of unidirectional limiter of speed, belong to
A kind of elevator component.
Background technology
Limiter of speed is the critical component of elevator safety, and of the prior art have a kind of such limiter of speed, including base, the end
Being equipped with rope sheave and ratchet by main axis on Zuo, the two ends of main shaft are arranged on base by bearing, and rope sheave spline is assembled
On main shaft, main shaft drives rope sheave to rotate, and is arranged with steel wire rope on rope sheave.The diameter of ratchet is less than the diameter of rope sheave, at rope
Being rotatably equipped with ratchet on the wheel face of wheel, be provided with torsion spring between ratchet and rope sheave, torsion spring is to Pawl Torsion so that pawl rotation
All the time having the trend of draw-in groove snap-fit with ratchet, ratchet is in free state when, ratchet and ratchet can be in clamping
State, on rope sheave also rotate be provided with location structure, location structure have one top pressure side, this pressure side top, top is pressed in ratchet
On so that ratchet is in the normal condition decontroling ratchet, has torsion spring between location structure and rope sheave, and torsion spring is that location structure carries
For compressing the power of ratchet, make ratchet overcome torsion spring power thereon, keep the state separated with ratchet, rope sheave is also rotatably equipped with
Two gravity drop hammers, ratchet and location structure be in the side of rope sheave, and two gravity drop hammers are in the other side of rope sheave.Two gravity
Hammer set-up mode on rope sheave is centrosymmetric mode, and the center of rotation of gravity drop hammer is not located at two ends, one end of gravity drop hammer
Quality more greatly tup end, other end quality is less for hammer handle end, is provided with pressure between hammer handle end and the rope sheave of a gravity drop hammer
Spring device, compression-spring device makes the tup end of gravity drop hammer be in the centre of rope sheave, the tup portion of this gravity drop hammer and another
Connecting between the hammer handle portion of individual gravity drop hammer and have pull bar, the two ends of pull bar are hinged with two gravity drop hammers respectively, in rope sheave normal rotation
Time, under the effect of compression-spring device, the tup portion of two gravity drop hammers is at the centre of rope sheave.At rope sheave overspeed operation
Time, under the influence of centrifugal force, two gravity drop hammers can overcome the spring force of compression-spring device to open, and two tups all can turn to rope sheave
Edge, two hammer handles turn to the center of rope sheave.Location structure has the triggering end through rope sheave, at the hammer of gravity drop hammer
When head turns to the outer rim of rope sheave, top pressure is triggered the triggering end of projection on end by gravity drop hammer so that location structure overcomes its torsion spring
Power rotates, and location structure compresses ratchet so that ratchet continues to rotate to the direction away from ratchet, along with the increase of rotation distance,
Location structure can decontrol ratchet, and ratchet is stuck with ratchet under the effect of its torsion spring, after location structure decontrols ratchet, and spine
Pawl will be crossed location structure and keep off location structure in turn so that location structure can not reset, and at this moment, location structure is at torsion spring
Pressure ratchet in top under the effect of power so that ratchet is in and the state of ratchet buckle reliably, in this state, if moving spine
Pawl makes it persistently rotate to the direction rotation away from ratchet, and ratchet will separate with location structure, and location structure is at its torsion spring
The lower return of effect.On base, the side in rope sheave is rotatably equipped with brake press plate, sets between side and the wheel face of brake press plate
Being equipped with connecting rod, one end of connecting rod is hinged at brake press plate, and the other end of connecting rod is hinged with the wheel face of ratchet, ratchet with
After ratchet is fastened togather, ratchet is followed rope sheave and is rotated, and ratchet drives brake press plate to press to rope sheave when rotating by connecting rod, from
And realize the braking of rope sheave.The limiter of speed being suitable in prior art is typically all such limiter of speed, this limiter of speed
Ratchet needs to forward the position stuck with ratchet to after falling could realize braking, needs the regular hour, it is impossible to brake at any time, tool
There is certain limitation.
Summary of the invention
It is an object of the invention to provide a kind of novel unidirectional Self-resetting limiter of speed that there is speed monitoring, can automatically trigger,
To provide a kind of novel unidirectional limiter of speed.
In order to realize object above, the present invention adopts the following technical scheme that a kind of novel have speed monitoring, can automatically touch
The unidirectional Self-resetting limiter of speed sent out, including base, base is provided with rope sheave by main axis, and rope sheave side wheel face is arranged
Having gravity drop hammer, the side of base rotates the brake press plate being provided with rope sheave, and base is fixedly installed top ballast power after powered up
Hammer makes the electric magnet that gravity drop hammer opens, and base is also rotatably equipped with the big friction wheel coaxial with rope sheave, rope sheave opposite side table
Being rotatably equipped with little friction pulley on face, little friction pulley is rotated by the fixed part extended on its outer peripheral face and is assemblied on rope sheave, little
It is provided with between friction pulley and rope sheave and makes little friction pulley turn to big friction wheel the torsion spring being pressed on big friction wheel, at the wheel of rope sheave
Also it is rotatably equipped with location structure in the top of little friction pulley on face, is provided with between location structure and rope sheave and makes location structure turn
To the location torsion spring of fixed part, location structure and the follower head elastic top press-fit of fixed part make little friction pulley away from big friction
Wheel, location structure is convexly equipped with and makes location structure when the tup of gravity drop hammer turns to the outer rim of rope sheave with gravity drop hammer press-fit
The triggering end overcoming location torsion spring power to disengage with fixed part, triggers end and is passed by the space on rope sheave wheel face, big friction wheel cuts with scissors
Being connected to when big friction wheel engages with little friction pulley pull brake press plate to make it compress the connecting rod of rope sheave, connecting rod gap is located in system
On dynamic pressure plate, connecting rod is the most spacing with the both sides of brake press plate to be coordinated, and big friction wheel sets away from coaxial fixing on the wheel face of gravity drop hammer
Being equipped with disc, the outer rim position of disc is laid with self-resetting switch, and each self-resetting switch be in disc one is concentrically ringed
On circumference, the lever of each self-resetting switch stretches to inner side, and the free end of each lever is in one group of concentrically ringed circle of disc respectively
Zhou Shang, gravity drop hammer touches each self-resetting switch during opening successively, and little friction pulley is convexly equipped with the hammer handle at gravity drop hammer
Press with the hammer handle top of gravity drop hammer when turning to the wheel rim of rope sheave and little friction pulley is separated with big friction wheel and makes location structure multiple
The lifting release link of position.
Rectangular channel is offered, the bearing of trend of rectangular channel and axial the one of big friction wheel on the wheel face of described big friction wheel
Cause.
Described little friction pulley is oval, and a longitudinal end of little friction pulley stretches to big friction wheel.
Described connecting rod passes and is arranged with stage clip in the part of brake press plate, and one end of stage clip is pressed on brake press plate,
The other end is pressed on the termination of connecting rod on the top splenium arranged.
The braking of the present invention uses big friction wheel and little friction pulley, and once hypervelocity occurs in rope sheave, and gravity drop hammer will touch
Sending out location structure, little friction pulley will fall and be pressed on big friction wheel, and two friction pulleys can be engaged moment, has no time to prolong
Late, it addition, the present invention is a kind of brand-new structure, it is provided that a kind of new unidirectional limiter of speed.Base is additionally provided with and can push up
Opening the electric magnet of gravity drop hammer, elevator master control system can control electric magnet energising at any time so that action of the present invention, allows car stop
Only.
Accompanying drawing explanation
Fig. 1 is the structural representation after the embodiment of the present invention removes disc；
Fig. 2 is the rope sheave in Fig. 1, big friction wheel and the installation diagram of little friction pulley；
Fig. 3 is the rope sheave in Fig. 1, big friction wheel, little friction pulley and the installation diagram of disc；
Fig. 4 is the three-dimensional installation diagram of the rope sheave in Fig. 1, big friction wheel and little friction pulley.
Detailed description of the invention
A kind of embodiment of the unidirectional Self-resetting limiter of speed that novel there is speed monitoring, can automatically trigger, Fig. 1, Fig. 2,
In Fig. 3 and Fig. 4, its base 1 being equipped with rope sheave 2 and big friction wheel 3 by main axis, the two ends of main shaft are arranged by bearing
On base 1, rope sheave 2 spline is assemblied on main shaft, and main shaft drives rope sheave 2 to rotate, and is arranged with steel wire rope on rope sheave.Big friction
Wheel 3 is set on main shaft, and not with main axis, the diameter of big friction wheel 3 is less than the diameter of rope sheave 2, in the side of rope sheave 2
Surface pivots is equipped with little friction pulley 4, little friction pulley 4 be by be extended on its outer peripheral face fixed part rotate be contained in rope sheave
On 2, being provided with torsion spring between little friction pulley 4 and rope sheave 2, torsion spring gives little friction pulley 4 torsion so that little friction pulley 4 is all the time
There is the trend turning to big friction wheel 3, little friction pulley 4 is in free state when, under the effect of torsion spring, little friction pulley
4 can be pressed on big friction wheel 3, also rotate and be provided with location structure 5, in location structure here and prior art on rope sheave 2
Structure for the location structure of ratchet location is identical, and location structure 5 is on the termination of fixed part so that little friction pulley is in
Away from the normal condition of big friction wheel, also having torsion spring between location structure 5 and rope sheave 2, torsion spring provides for location structure 5 and compresses
The power of fixed part so that little friction pulley 4 overcomes torsion spring power thereon, keeps the normal condition separated with big friction wheel 3, rope sheave 2
On be also rotatably equipped with two gravity drop hammers 6, little friction pulley 4 and location structure 5 are in the side of rope sheave, and two gravity drop hammers 6 are in
The other side of rope sheave 2.Two gravity drop hammers 6 set-up mode on rope sheave is centrosymmetric mode, in the rotation of gravity drop hammer 6
The heart is not located at two ends, one end quality of gravity drop hammer 6 more greatly tup end, and other end quality is less for hammer handle end, a gravity drop hammer 6
Hammer handle end and rope sheave 2 between be provided with compression-spring device, compression-spring device makes the tup end of gravity drop hammer be in the central part of rope sheave
Position, is connected between the tup portion and the hammer handle portion of another gravity drop hammer of this gravity drop hammer and has pull bar, and the two ends of pull bar are respectively with two
Individual gravity drop hammer 6 is hinged, and when rope sheave 2 normal rotation, under the effect of compression-spring device, the tup portion of two gravity drop hammers 6 is at
The centre of rope sheave 2.When rope sheave 2 overspeed operation, under the influence of centrifugal force, two gravity drop hammers 6 can overcome compression-spring device
Spring force open, two tups all can turn to the edge of rope sheave 2, and two hammer handles turn to the center of rope sheave.On location structure 5
Being convexly equipped with triggering end, trigger end and pass rope sheave 2, when the tup of gravity drop hammer turns to the outer rim of rope sheave, top pressure is triggered by gravity drop hammer
End so that location structure overcomes the power of its torsion spring to rotate, and location structure 5 compresses little friction pulley 4 so that little friction pulley 4 continue to
Direction away from big friction wheel 3 rotates, and along with the increase of rotation distance, location structure 5 can decontrol little friction pulley 4, little friction pulley 4
Being pressed under the effect of its torsion spring on big friction wheel 3, after location structure 5 decontrols little friction pulley 4, little friction pulley 4 will be got over
Crossing location structure 5 and keep off location structure 5 in turn so that location structure 5 can not reset, at this moment, location structure 5 is in torsion spring power
Little friction pulley 4 is pressed on the lower top of effect so that little friction pulley 4 is in and the state of big friction wheel 3 buckle reliably, in this state
Under, make it persistently rotate to the direction rotation away from big friction wheel 3 if moving little friction pulley 4, little friction pulley 4 will be with location
Structure 5 separates, and location structure 5 is return under the effect of its torsion spring, decontrols little friction pulley 4, and location structure 5 will be with little friction pulley 4
Location.On base 1, the side in rope sheave 2 is rotatably equipped with brake press plate 7, the side of brake press plate 7 and the wheel of big friction wheel
Being provided with connecting rod 8 between face, the other end of connecting rod 8 is hinged with the wheel face of big friction wheel, and the other end of connecting rod 8 is by brake press plate 7
The slide opening offered of free end in pass, connecting rod 8 and slide opening matched in clearance, connecting rod 8 passes and is arranged with stage clip in the part of slide opening
9, the top, upper end of stage clip 9 is pressed on the top splenium 10 that the axis of guide is arranged, and the top, lower end of stage clip 9 is pressed on brake press plate 7.Due to even
Bar 8 and slide opening matched in clearance, so, can relatively rotate between connecting rod 8 and brake press plate 7.Here its actually plate of connecting rod 8
Shape, is round bar in the one end coordinated with brake press plate, connecting rod tabular partial width more than the diameter of round bar part, so both
Junction, plate portion just extends to outside the side face at round bar position, and, the hole that brake press plate coordinates with connecting rod straight
Footpath is also less than the width of plate portion, and so, plate portion has a spacing cooperation in side of brake press plate, and connecting rod
Termination and the opposite side of brake press plate coordinate by stage clip is spacing.
Base is additionally provided with electric magnet, pressure gravity drop hammer can be pushed up in electric magnet energising so that gravity drop hammer opens and backs down
Positioner so that little friction pulley engages with big friction wheel, limiter of speed action, elevator stops.
Offering rectangular channel on the wheel face of big friction wheel, the bearing of trend of rectangular channel is axial consistent with big friction wheel, square
The groove depth of shape groove is to be far smaller than the well width of rectangular channel, the existence of rectangular channel can increase big friction wheel and little friction pulley it
Between friction pulley make both occlusion relatively reliable.
Little friction pulley 4 is oval, and a longitudinal end of little friction pulley 4 is stretched to big friction wheel 3, so be can ensure that size
Friction pulley can mesh together reliably.
Being convexly equipped with lifting release link 11 on little friction pulley 4, lifting release link 11 is perpendicular to the wheel face of rope sheave 2, here
Rope sheave 2 fills for wheel hub, it is simply that has wheel rim, has core wheel, is linked to be an entirety, lifting release link by spoke between core wheel and wheel rim
11 are passed by between two spokes, offer functional hole 12 on the hammer handle of gravity drop hammer 6, lifting release link 11 by two spokes it
Between pass after passed by functional hole 12 again.The hammer handle of gravity drop hammer 6 is fixed by being located in helicitic texture in functional hole 12
There is top pinch roller 13, when gravity drop hammer 6 resets, namely when the hammer handle of gravity drop hammer 6 turns to the wheel rim of rope sheave 2, push up pinch roller 13 meeting
Top pressure lifting release link 11, namely drives little friction pulley 4 to make it persistently rotate to the direction away from big friction wheel 3, little friction
Wheel 4 will separate with location structure 5, and location structure 5 is return under the effect of its location torsion spring, at this moment decontrols little friction pulley 4, fixed
Bit architecture 5 will position with little friction pulley 4, and both are returned to original state, it is achieved automatically reseting of little friction pulley 4.
Owing to lifting release link 11 is functional hole 12 on the hammer handle of gravity drop hammer 6, in motor process, lifting release link 11
Can move relative to the hammer handle of gravity drop hammer 6, thus functional hole 12 need to have dodge lifting release link 11 dodge part, dodge
Part is so that lifting release link 11 moves freely relative to gravity drop hammer 6.
At big friction wheel 3 away from being coaxially fixedly installed disc 14 on the wheel face of gravity drop hammer 6, disc 14 is lamellar ring body,
Radially being laid with fixing calvus on the inner hole wall of disc 14, fixing calvus is fixed by screws on disc.The outer rim of disc 14
Being laid with connection sheet 16, connect sheet 16 and be wholely set with disc 14, and it is coplanar with disc 14 to connect sheet 16, each connects sheet 16
On be fixed with self-resetting switch 17, each self-resetting switch 17 is on a circumference, this circumference be one of disc 14 with
Heart circle, the lever 15 of each self-resetting switch 17 stretches to inner side, and the free end of each lever 15 is in one group of concentrically ringed circumference respectively
On, this group concentric circular is all the concentric circular of disc, and gravity drop hammer touches each self-resetting switch 17, thick stick during opening successively
First touching of bar length, touches after lever is short.
Big friction wheel in the present embodiment is columned, and little friction pulley is oval column, both friction pulleys, two
The occlusion of person is realized by frictional force, here, after little friction pulley is pressed on big friction wheel, if little friction pulley and rope
Torsion spring between wheel causes the little friction pulley to the pressure of big friction wheel to be: F；Coefficient of friction between big friction wheel and little friction pulley
For μ；Little friction pulley is respectively as follows: L1 relative to the center of rotation of rope sheave to the tangent line at the point of contact of size friction pulley and the distance of normal
And L2, then, the occlusion condition of big friction wheel and little friction pulley is: F μ L1 ＞ FL2, i.e. μ L1 ＞ L2, otherwise, and size friction pulley
Will be unable to engagement, then, when size friction pulley engages, it will be appreciated by those skilled in the art that needs meet a upper condition.
Differing only in spine between the individual event limiter of speed in the present embodiment and individual event limiter of speed of the prior art
Wheel, ratchet have changed big friction wheel and little friction pulley respectively into, and it is just the same with structure.
The present embodiment is according to illustrating of making the present invention, and is not limitation of the invention, need not attached
Belonging to the function in claim, corresponding structure can be not provided with in other embodiments.
Any technical characteristic to the present invention carries out the technical scheme obtained by equivalent and falls within present invention protection
Scope.
Claims (4)
1. the novel unidirectional Self-resetting limiter of speed having speed monitoring, automatically triggering, including base, by main on base
Axle rotates and is provided with rope sheave, and rope sheave side wheel face is provided with gravity drop hammer, and the side of base rotates the braking pressure being provided with rope sheave
Plate, base is fixedly installed the electric magnet that pressure gravity drop hammer in top makes gravity drop hammer open after powered up, it is characterised in that: on base
Also it is rotatably equipped with the big friction wheel coaxial with rope sheave, rope sheave opposite side surface is rotatably equipped with little friction pulley, little friction pulley
Rotated by the fixed part extended on its outer peripheral face and be assemblied on rope sheave, be provided with between little friction pulley and rope sheave and make little friction pulley
Turn to big friction wheel the torsion spring being pressed on big friction wheel, the wheel face of rope sheave is also rotatably equipped with above little friction pulley
Location structure, is provided with the location torsion spring making location structure turn to fixed part between location structure and rope sheave, location structure is with solid
The follower head elastic top press-fit determining portion makes little friction pulley away from big friction wheel, and location structure is convexly equipped with the tup at gravity drop hammer
Location structure is made to overcome the triggering that location torsion spring power disengages with fixed part with gravity drop hammer press-fit when turning to the outer rim of rope sheave
End, triggers end and is passed by the space on rope sheave wheel face, big friction wheel is hinged with and draws when big friction wheel engages with little friction pulley
Dynamic brake press plate makes it compress the connecting rod of rope sheave, and connecting rod gap is located on brake press plate, and connecting rod is equal with the both sides of brake press plate
Spacing cooperation, big friction wheel is away from being coaxially fixedly installed disc on the wheel face of gravity drop hammer, and the outer rim position of disc is laid with certainly
Reset switch, each self-resetting switch is on a concentrically ringed circumference of disc, in the lever of each self-resetting switch stretches to
Side, the free end of each lever is on one group of concentrically ringed circumference of disc respectively, and gravity drop hammer touches during opening successively
Each self-resetting switch, little friction pulley is convexly equipped with the hammer handle top with gravity drop hammer when the hammer handle of gravity drop hammer turns to the wheel rim of rope sheave
The lifting release link that pressure makes little friction pulley separate with big friction wheel and location structure is resetted.
The novel unidirectional Self-resetting limiter of speed that there is speed monitoring, can automatically trigger the most according to claim 1, its feature
Being: offer rectangular channel on the wheel face of described big friction wheel, the bearing of trend of rectangular channel is axial consistent with big friction wheel.
The novel unidirectional Self-resetting limiter of speed that there is speed monitoring, can automatically trigger the most according to claim 1 and 2, its
It is characterised by: described little friction pulley is ellipse, and a longitudinal end of little friction pulley stretches to big friction wheel.
The novel unidirectional Self-resetting limiter of speed that there is speed monitoring, can automatically trigger the most according to claim 3, its feature
It is: described connecting rod passes and is arranged with stage clip in the part of brake press plate, and one end of stage clip is pressed on brake press plate, another
End is pressed on the termination of connecting rod on the top splenium arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610491844.XA CN106115407A (en) | 2016-06-29 | 2016-06-29 | The novel unidirectional Self-resetting limiter of speed that there is speed monitoring, can automatically trigger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610491844.XA CN106115407A (en) | 2016-06-29 | 2016-06-29 | The novel unidirectional Self-resetting limiter of speed that there is speed monitoring, can automatically trigger |
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| Publication Number | Publication Date |
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| CN106115407A true CN106115407A (en) | 2016-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610491844.XA Pending CN106115407A (en) | 2016-06-29 | 2016-06-29 | The novel unidirectional Self-resetting limiter of speed that there is speed monitoring, can automatically trigger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11365091B2 (en) | 2018-12-04 | 2022-06-21 | Otis Elevator Company | Overspeed protection switch, overspeed governor assembly and elevator system |
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| CN2556178Y (en) * | 2002-07-10 | 2003-06-18 | 李春涛 | Elevator two-way overspeed protective device |
| CN201058780Y (en) * | 2007-07-10 | 2008-05-14 | 宁波申菱电梯配件有限公司 | Novel elevator over-speed governor |
| JP4745332B2 (en) * | 2005-02-24 | 2011-08-10 | 三菱電機株式会社 | Elevator governor |
| CN202440201U (en) * | 2012-02-08 | 2012-09-19 | 阳西县电梯配件有限公司 | Bidirectional speed limiter |
| CN104355197A (en) * | 2014-10-15 | 2015-02-18 | 苏州莱茵电梯制造有限公司 | Elevator speed limiter without safety rope |
| CN105217407A (en) * | 2015-10-23 | 2016-01-06 | 西继迅达（许昌）电梯有限公司 | Subtract stroke unidirectional automatic anti-running car speed limiting system |
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- 2016-06-29 CN CN201610491844.XA patent/CN106115407A/en active Pending
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|---|---|---|---|---|
| CN1319550A (en) * | 2000-04-14 | 2001-10-31 | 中国建筑科学研究院建筑机械化研究分院 | Bidirectional speed limiter for elevator |
| CN2556178Y (en) * | 2002-07-10 | 2003-06-18 | 李春涛 | Elevator two-way overspeed protective device |
| JP4745332B2 (en) * | 2005-02-24 | 2011-08-10 | 三菱電機株式会社 | Elevator governor |
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| CN104355197A (en) * | 2014-10-15 | 2015-02-18 | 苏州莱茵电梯制造有限公司 | Elevator speed limiter without safety rope |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11365091B2 (en) | 2018-12-04 | 2022-06-21 | Otis Elevator Company | Overspeed protection switch, overspeed governor assembly and elevator system |
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Application publication date: 20161116 |
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| RJ01 | Rejection of invention patent application after publication |