CN108275532A - A kind of elevator governor - Google Patents
A kind of elevator governor Download PDFInfo
- Publication number
- CN108275532A CN108275532A CN201810180157.5A CN201810180157A CN108275532A CN 108275532 A CN108275532 A CN 108275532A CN 201810180157 A CN201810180157 A CN 201810180157A CN 108275532 A CN108275532 A CN 108275532A
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- CN
- China
- Prior art keywords
- hypophysis
- component
- brake
- holder
- spring
- 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.)
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Classifications
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
- B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Abstract
The invention discloses a kind of elevator governors,Including holder,Frame upper is equipped with governor switch,It is provided with rope wheel component in the holder,The rope wheel component side is provided with brake assemblies,The brake assemblies include compressed spring,The lower end of the compressed spring is fixed on bottom plate,The upper end of the compressed spring is equipped with pawl,It further include brake scotch,Brake scotch axis and brake axle,The pawl is mounted on brake axle,The brake scotch is mounted on brake scotch axis and brake axle,It further include the stops component being hinged on side wall,It is additionally provided with hypophysis component in the rope sheave mechanism,Tripping spring is designed as vertical structure by the brake assemblies in this limiter of speed,And by by tripping spring,The linkage of brake scotch axis and pawl designs,So that braking action to rope wheel component can be realized in the small space that brake structure need to only occupy rope wheel component side,To substantially reduce the occupied space of elevator governor,So that this elevator governor adapts to the use in small space.
Description
Technical field
The present invention relates to a kind of limiter of speed for elevator, more particularly to a kind of elevator governor.
Background technology
Elevator governor is one of the safety con-trol part in elevator safety protection system, when elevator in operation no matter
Which kind of reason makes car exceed the speed limit, or even the danger fallen, and the inoperative feelings of every other safety guard
Under condition, then linkage action occurs for limiter of speed and safety tongs, and lift car is made to stop, and used currently on the market is Chinese patent
201210552798.1 a kind of disclosed elevator governor, structure are as follows：Including engine base, rope sheave, centrifugal hammer, ratchet, spine
Pawl, brake apparatus and manual initiating device, the engine base are U-shaped structure, and the rope sheave is articulated in by sheave shaft on engine base, steel
Cord bypasses rope sheave, and one end is connect with lift car, and the centrifugal hammer symmetrically, is rotationally articulated in rope sheave by centrifugal hammer axis
On, it is also equipped with electric switch on engine base, is equipped with and re-packs on electric switch, being provided with electric switch on the centrifugal hammer hits
Needle, the pawl rotationally and with centrifugal hammer are coaxially mounted on rope sheave, and the pawl keeps promoting by screw and centrifugal hammer
It is dynamic, and the pawl in reseting elastic element actuates the trend for remaining and being staggered with ratchet；Described brake apparatus one end pivot
It is connected on ratchet, the other end is articulated on engine base.Brake apparatus include brake block, brake axle, pressure rope support, pressure rope support axis,
Tripping spring, switch triggering handle, pressure rope support is by pressing rope support axis to be installed in rotation on engine base, on pressure rope support
Brake block is installed by brake axle, switch triggering handle one end is articulated on ratchet, and the other end passes through on pressure rope support far from machine
It is stretched out behind the hole of seat one end, extension installs tripping spring by nut, and tripping spring one end is contacted with pressure rope support, another
End is contacted with the nut of switch triggering handle, and the brake apparatus in such limiter of speed is angularly disposed by tripping spring, complicated,
Occupied space is big so that needs to reserve one piece of much room when installing limiter of speed, therefore when lift space is inadequate, it may appear that
The case where limiter of speed can not be installed.
Invention content
It is good that the technical problem to be solved by the present invention is to provide a kind of performances, the small elevator governor of structure essence.
The technical solution adopted by the present invention to solve the technical problems is：A kind of elevator governor, including holder, on holder
Portion is equipped with governor switch, and the holder includes bottom plate and side wall, and rope wheel component, the pulley set are provided in the holder
Part includes for the rope sheave mechanism and ratchet mechanism around steel wire rope, and the rope wheel component side is provided with brake assemblies, the system
Dynamic component includes vertically disposed compressed spring, and the lower end of the compressed spring is fixed on bottom plate, the compressed spring it is upper
End is equipped with the pawl that can be caught in ratchet mechanism, and the pawl lower part is provided with third through-hole, further includes brake scotch, the braking
Watt top is provided with the first kidney slot, and the brake scotch lower part is provided with third kidney slot, the side at brake assemblies
Wall is provided with superposed second through-hole and the second kidney slot positioned at lower part, further include across the second through-hole brake scotch axis with
Across the second kidney slot brake axle, the pawl is mounted on by third through-hole on brake axle, and the brake scotch passes through third waist
Shape hole is mounted on brake scotch axis, and first kidney slot passes through brake scotch axis, further includes being hinged on side wall to be used to trigger
Brake assemblies carry out the stops component of brake operating, are additionally provided in the rope sheave mechanism and provide trigger force to stops component
Hypophysis component.
It is further：The hypophysis component includes the first hypophysis component and the second hypophysis component, the first hypophysis group
Part includes the first hypophysis holder, and described first hypophysis holder one end is hinged with rope wheel component, the first hypophysis holder other end
First hypophysis is installed, first hypophysis side is provided with can be with first dozen of bar of stops component touch, first hypophysis
The other side is provided through the first couple axle of the first hypophysis holder；
The second hypophysis component includes the second hypophysis holder, and described second hypophysis holder one end is hinged with rope wheel component,
The second hypophysis holder other end is equipped with the second hypophysis, and second hypophysis side is provided with can be with stops component touch
Second dozen of bar, second hypophysis other side are provided through the second couple axle of the second hypophysis holder, the first hypophysis group
The coiling machine for controlling the first hypophysis component and the second hypophysis component movement radius is additionally provided on part and the second hypophysis component
Structure.
It is further：Further include connecting rod, is mounted in the middle part of rope wheel component by bearing in the middle part of the connecting rod and follows rope sheave
Component synchronization rotates, and the connecting rod two end is both provided with kidney-shaped limit hole, and described two kidney-shaped limit holes are respectively sleeved at first
On couple axle and the second couple axle.
It is further：Further include spring mechanism include screw rod, the second hypophysis holder is set close to the second hypophysis side
It is equipped with spring block, spring is provided in the spring block and passes through hole, described screw rod one end is mounted on the by fixed copper billet
One hypophysis holder and rope wheel component hinged place, the screw rod other end pass through spring that hole, the screw rod is passed through to pass through spring block
There are two spring retaining washer, the spring is set on screw rod and between two spring retaining washer for one end setting.
It is further：The stops component includes stops ontology, side walls hinged with holder in the middle part of the stops ontology,
Stops component one end is provided with the bead screw that blocking pawl is used for detent contact, the stops component other end setting
It is useful for receiving the holding screw of hypophysis component external rotary force.
The beneficial effects of the invention are as follows：Compressed spring is designed as vertically by the brake assemblies in the elevator governor of the present invention
Structure, and by designing the linkage of compressed spring, brake scotch axis and pawl so that brake structure need to only occupy rope wheel component one
The braking action to rope wheel component can be realized in the small space of side makes to substantially reduce the occupied space of elevator governor
Obtain the use that this elevator governor adapts to small space.
Description of the drawings
Fig. 1 is elevator governor schematic diagram.
Fig. 2 is elevator governor explosive view.
Fig. 3 is support schematic diagram.
Fig. 4 is rope sheave structural scheme of mechanism.
Fig. 5 is the first hypophysis component diagram.
Fig. 6 is the second hypophysis component diagram.
Fig. 7 is spring mechanism schematic diagram.
Block assembly schematic diagram until Fig. 8.
In figure label for：Holder 1, governor switch 2, rope sheave mechanism 3, ratchet mechanism 4, compressed spring 5, pawl 6, third
Through-hole 7, brake scotch 8, the first kidney slot 9, third kidney slot 10, the second through-hole 11, the second kidney slot 12, brake scotch axis 13, system
Moving axis 14, stops component 15, stops ontology 151, bead screw 152, holding screw 153, the first hypophysis component 16, the first hypophysis
Holder 161,162, first dozens of bars 163 of the first hypophysis, the first couple axle 164, the second hypophysis component 17, the second hypophysis holder 171,
Second bar 173 of hypophysis 172, second dozens, the second couple axle 174, spring block 175, spring mechanism 18, screw rod 181, fixed copper billet
182, spring retaining washer 183, spring 184, connecting rod 19, kidney-shaped limit hole 20.
Specific implementation mode
The present invention is further described with reference to the accompanying drawings and detailed description.
A kind of elevator governor as depicted in figs. 1 and 2, including holder 1,1 top of holder are equipped with governor switch 2,
The governor switch 2 is installed to by screw and nut on holder 1, and the holder 1 includes bottom plate and side wall, the holder 1
It is inside provided with rope wheel component, the rope wheel component includes for the rope sheave mechanism 3 and ratchet mechanism 4 around steel wire rope, the rope sheave
Component side is provided with brake assemblies, and the brake assemblies include vertically disposed compressed spring 5, under the compressed spring 5
End is fixed on by linking holder 1 on bottom plate, and the upper end of the compressed spring 5 is equipped with the pawl 6 that can be caught in ratchet mechanism 4,
6 lower part of the pawl is provided with third through-hole 7, further includes brake scotch 8,8 top of the brake scotch is angularly disposed the first kidney-shaped
Hole 9,8 lower part of the brake scotch are provided with third kidney slot 10, and the side wall at brake assemblies is provided with positioned at top
The second through-hole 11 and the second kidney slot 12 positioned at lower part, further include across the second through-hole 11 brake scotch axis 13 with across the
The brake axle 14 of two kidney slots 12, the pawl 6 are mounted on by third through-hole 7 on brake axle 14, and the brake scotch 8 passes through the
Three kidney slots 10 are mounted on brake scotch axis 13, and first kidney slot 9 passes through brake scotch axis 13, when brake scotch axis 13 is from the
During the lower motion of one kidney slot 9 to the top of the first kidney slot 9, the top of brake scotch axis 13 can be to rope sheave mechanism 3
Direction moves, and further includes the stops component 15 that brake operating is carried out for triggering brake assemblies being hinged on side wall, described
The hypophysis component that trigger force is provided to stops component 15, the operation principle of above-mentioned elevator governor are additionally provided in rope sheave mechanism 3
It is as follows：After elevator reaches the speed limit of limiter of speed, elevator decrease speed increases, so that the rotating speed of rope wheel component increases, i.e.,
The centrifugal force that hypophysis component is subject to increases, so that the moving radius of hypophysis component increases, hypophysis component bumps against speed limit first
Device switch 2, elevator power supply are cut off, and traction machine brake action, elevator stops；As traction machine brake acts not in time or loses
Effect, hypophysis component, which is rotated further, to be got on stops component 15 so that stops component 15 rotates, and stops component 15 loses to pawl 6
Barrier force, under the driving of compressed spring 5, pawl 6 is caught in ratchet mechanism 4, and ratchet mechanism 4 can still follow rope sheave machine at this time
Structure 3 continues to rotate down a distance so that pawl 6 drives compressed spring 5 to push, and drives brake axle 14 to transport simultaneously when pushing
It moves to the lower part of the second kidney slot 12 so that brake scotch 8 is mounted on by third kidney slot 10 on brake axle 14, so that system
Dynamic watt 8 of lower end, which follows, to be moved downward, so that under the limit of the first kidney slot 9, the top of brake scotch 8 is to rope wheel component
Direction moves, and blocks the steel wire rope in rope wheel component, plays braking action, and the brake assemblies in elevator governor of the invention will
Compressed spring 5 is designed as vertical structure, and by designing the linkage of compressed spring 184, brake scotch axis 13 and pawl 6 so that
Braking action to rope wheel component can be realized in the small space that brake structure need to only occupy rope wheel component side, to greatly reduce
The occupied space of elevator governor so that this elevator governor adapts to the use in small space.
On the basis of the above, as shown in Figures 4 to 6, the hypophysis component includes the first hypophysis component 16 and the second hypophysis
Component 17, the first hypophysis component 16 include the first hypophysis holder 161, described first hypophysis holder, 161 one end and pulley set
Part is hinged, and 161 other end of the first hypophysis holder is equipped with the first hypophysis 162, and 162 side of the first hypophysis is provided with can
The first dozen of bar 163 contacted with stops component 15,162 other side of the first hypophysis are provided through the first hypophysis holder 161
The first couple axle 164；The second hypophysis component 17 includes the second hypophysis holder 171, described second hypophysis holder, 171 one end
Hinged with rope wheel component, 171 other end of the second hypophysis holder is equipped with the second hypophysis 172,172 side of the second hypophysis
It is provided with the second dozen of bar 173 that can be contacted with stops component 15,172 other side of the second hypophysis is provided through the second hypophysis
Second couple axle 174 of holder 171 is additionally provided on the first hypophysis component 16 and the second hypophysis component 17 for controlling the
The spring mechanism 18 of 17 moving radius of one hypophysis component 16 and the second hypophysis component is normal in rope wheel component in specific works
When rotation, under the action of spring mechanism 18, the moving radius of the first hypophysis component 16 and the second hypophysis component 17 is small so that hangs down
For body component in rotation process, first dozen of bar 163 and second dozen of bar 173 will not get to stops component 15, to subsequent system
Dynamic component is triggered, and after elevator is more than the restriction speed of limiter of speed, cage descending speed increases so that rope wheel component rotating speed
Increase, so that the centrifugal force that the first hypophysis component 16 and the second hypophysis component 17 are subject to increases, so that the first hypophysis
Component 16 and the second hypophysis component 17 overcome the elastic force of elastic mechanism so that the first hypophysis component 16 and the second hypophysis component 17
Moving radius increase so that first dozen of bar 163 or second dozen of bar 173 can get to governor switch 2 and stops component 15,
To trigger elevator power supply be cut off and brake assemblies carry out brake operating, using such mechanical trigger mechanism can make triggering more
Accurately.
On the basis of the above, as shown in figure 4, further including connecting rod 19,19 middle part of the connecting rod is mounted on rope sheave by bearing
Rope wheel component is followed to rotate synchronously in the middle part of component, 19 both ends of the connecting rod are both provided with kidney-shaped limit hole 20, described two kidney-shapeds
Limit hole 20 is respectively sleeved on the first couple axle 164 and the second couple axle 174, and the setting of the connecting rod 19 can be to the first hypophysis
Component 16 and 17 moving radius of the second hypophysis component play position-limiting action so that when the first hypophysis component 16 and the second hypophysis component
It, also can only be within the scope of the restriction of kidney-shaped limit hole 20, to ensure in an overspeed situation, first after 17 moving radius increases
Making bar 163 or second dozen of bar 173 also can accurately get to governor switch 2 and stops component 15.
On the basis of the above, as shown in fig. 7, further including that spring mechanism 18 includes screw rod 181, the second hypophysis holder
171 are provided with spring block 175 close to 172 side of the second hypophysis, and spring is provided in the spring block 175 and passes through hole, institute
It states 181 one end of screw rod and the first hypophysis holder 161 and rope wheel component hinged place, the screw rod 181 is mounted on by fixed copper billet 182
The other end passes through spring that hole, the screw rod 181 is passed through to pass through spring retaining washer 183 there are two the settings of 175 one end of spring block,
The spring 184 is set on screw rod 181 and between two spring retaining washer 183, when in During regular rotation, the
It is acted on by 184 power of spring between one hypophysis holder 161 and the opposite end of the second hypophysis holder 171 so that first hangs down
Body support frame 161 and the second hypophysis holder 171 rotate in the movement radius of very little, when hypervelocity, the first hypophysis component 16
Overcoming 184 power of spring under the action of 17 increased centrifugal force of the second hypophysis component so that spring 184 compresses, so that the
The moving radius of the first hypophysis 162 and the second hypophysis 172 in one hypophysis component 16 and the second hypophysis component 17 increases, to make
Stops component 15 can be got to and play the role of driving brake assemblies by obtaining first dozen of bar 163 and second dozen of bar 173, so that braking
Component will not there is a situation where error startings.
On the basis of the above, as shown in figure 8, the stops component 15 includes stops ontology 151, the stops ontology 151
Middle part is side walls hinged with holder 1, and described 15 one end of stops component is provided with the bead contacted with pawl 6 for blocking pawl 6
Screw 152,15 other end of stops component are provided with the holding screw 153 for receiving hypophysis component external rotary force,
When reset condition, 152 end of bead screw of stops component 15 is mutually contradicted with pawl 6 so that pawl 6 will not be caught in ratchet mechanism
In 4, after the external force given by hypophysis component when 153 end of holding screw, stops ontology 151 can be rotated around hinge joint so that glass
Pearl screw 152 disappears to the conflict power of pawl 6, so that brake assemblies, which obtain triggering, carries out brake operating.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical solution and advantageous effect
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the present invention
Within the scope of shield.
Claims (5)
1. a kind of elevator governor, including holder (1), holder (1) top is equipped with governor switch (2), holder (1) packet
Bottom plate and side wall are included, is provided with rope wheel component in the holder (1), the rope wheel component includes for the rope sheave machine around steel wire rope
Structure (3) and ratchet mechanism (4), it is characterised in that：The rope wheel component side is provided with brake assemblies, and the brake assemblies include
The lower end of vertically disposed compressed spring (5), the compressed spring (5) is fixed on bottom plate, the upper end of the compressed spring (5)
The pawl (6) of ratchet mechanism (4) can be caught in by being equipped with, and pawl (6) lower part is provided with third through-hole (7), further include braking
Watt (8), brake scotch (8) top are provided with the first kidney slot (9), and brake scotch (8) lower part is provided with third kidney slot
(10), the side wall at brake assemblies is provided with superposed second through-hole (11) and the second kidney-shaped positioned at lower part
Hole (12), further include across the second through-hole (11) brake scotch axis (13) with across the second kidney slot (12) brake axle (14),
The pawl (6) is mounted on by third through-hole (7) on brake axle (14), and the brake scotch (8) passes through third kidney slot (10)
On brake scotch axis (13), first kidney slot (9) passes through brake scotch axis (13), further includes the use being hinged on side wall
The stops component (15) of brake operating is carried out in triggering brake assemblies, is additionally provided in the rope sheave mechanism (3) and gives stops group
Part (15) provides the hypophysis component of trigger force.
2. a kind of elevator governor as described in claim 1, it is characterised in that：The hypophysis component includes the first hypophysis component
(16) and the second hypophysis component (17), the first hypophysis component (16) include the first hypophysis holder (161), first hypophysis
Holder (161) one end is hinged with rope wheel component, and the first hypophysis holder (161) other end is equipped with the first hypophysis (162), institute
It states the first hypophysis (162) side and is provided with the first dozen of bar (163) that can be contacted with stops component (15), first hypophysis
(162) other side is provided through the first couple axle (164) of the first hypophysis holder (161)；
The second hypophysis component (17) includes the second hypophysis holder (171), the second hypophysis holder (171) one end and rope sheave
Member hinges, the second hypophysis holder (171) other end are equipped with the second hypophysis (172), the second hypophysis (172) side
It is provided with the second dozen of bar (173) that can be contacted with stops component (15), the second hypophysis (172) other side is provided through
It is also set on the second couple axle (174) of two hypophysis holders (171), the first hypophysis component (16) and the second hypophysis component (17)
It is equipped with the spring mechanism (18) for controlling the first hypophysis component (16) and second hypophysis component (17) moving radius.
3. a kind of elevator governor as claimed in claim 2, it is characterised in that：Further include connecting rod (19), the connecting rod (19)
Middle part, which is mounted on by bearing in the middle part of rope wheel component, follows rope wheel component to rotate synchronously, and connecting rod (19) both ends are both provided with waist
Shape limit hole (20), described two kidney-shaped limit holes (20) are respectively sleeved at the first couple axle (164) and the second couple axle (174)
On.
4. a kind of elevator governor as claimed in claim 3, it is characterised in that：Further include spring mechanism (18) include screw rod
(181), the second hypophysis holder (171) is provided with spring block (175), the spring close to the second hypophysis (172) side
Spring is provided in block (175) passes through hole, described screw rod (181) one end to be mounted on the first hypophysis by fixed copper billet (182)
Holder (161) and rope wheel component hinged place, screw rod (181) other end pass through spring that hole, the screw rod (181) is passed through to pass through
The setting of spring block (175) one end there are two spring retaining washer (183), the spring (184) be set on screw rod (181) and
Between two spring retaining washers (183).
5. a kind of elevator governor as described in claim 1, it is characterised in that：The stops component (15) includes stops ontology
(151), side walls hinged with holder (1) in the middle part of the stops ontology (151), described stops component (15) one end is provided with and spine
Bead screw (152) of pawl (6) contact for blocking pawl (6), stops component (15) other end are provided with for receiving
The holding screw (153) of hypophysis component external rotary force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810180157.5A CN108275532B (en) | 2018-03-05 | 2018-03-05 | Elevator speed limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810180157.5A CN108275532B (en) | 2018-03-05 | 2018-03-05 | Elevator speed limiter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108275532A true CN108275532A (en) | 2018-07-13 |
| CN108275532B CN108275532B (en) | 2023-06-30 |
Family
ID=62809103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810180157.5A Active CN108275532B (en) | 2018-03-05 | 2018-03-05 | Elevator speed limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108275532B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110203791A (en) * | 2019-07-09 | 2019-09-06 | 宁波元吉智能科技有限公司苏州分公司 | Limiter of speed |
| CN110217665A (en) * | 2019-07-09 | 2019-09-10 | 宁波元吉智能科技有限公司苏州分公司 | Link mechanism |
| CN110844737A (en) * | 2019-11-22 | 2020-02-28 | 宿州学院 | Elevator speed limiter |
| CN111498640A (en) * | 2020-06-02 | 2020-08-07 | 宁波元吉智能科技有限公司苏州分公司 | Braking device and elevator speed limiter comprising same |
| CN110844737B (en) * | 2019-11-22 | 2024-04-26 | 宿州学院 | Elevator speed limiter |
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| CN110844737A (en) * | 2019-11-22 | 2020-02-28 | 宿州学院 | Elevator speed limiter |
| CN110844737B (en) * | 2019-11-22 | 2024-04-26 | 宿州学院 | Elevator speed limiter |
| CN111498640A (en) * | 2020-06-02 | 2020-08-07 | 宁波元吉智能科技有限公司苏州分公司 | Braking device and elevator speed limiter comprising same |
| CN111498640B (en) * | 2020-06-02 | 2024-04-26 | 广东聚科源楼宇科技有限公司 | Braking device and elevator speed limiter comprising same |
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| CN108275532B (en) | 2023-06-30 |
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