CN110329872A - Centrifugal elevator governor - Google Patents
Centrifugal elevator governor Download PDFInfo
- Publication number
- CN110329872A CN110329872A CN201910732240.3A CN201910732240A CN110329872A CN 110329872 A CN110329872 A CN 110329872A CN 201910732240 A CN201910732240 A CN 201910732240A CN 110329872 A CN110329872 A CN 110329872A
- Authority
- CN
- China
- Prior art keywords
- centrifugal
- pawl
- ratchet
- rope sheave
- elevator governor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001360 synchronised effect Effects 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims abstract description 4
- 238000005119 centrifugation Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 4
- 210000000078 claw Anatomy 0.000 description 16
- 206010057071 Rectal tenesmus Diseases 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 208000012271 tenesmus Diseases 0.000 description 3
- 206010013786 Dry skin Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- 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
Abstract
The invention discloses a kind of centrifugal elevator governors, including base, the electric switch being fixedly arranged on base, the rope sheave being rotationally connected on base by sheave shaft, the ratchet being rotationally connected on sheave shaft, on rope sheave by pawl shaft be rotatably connected to ratchet cooperation pawl and with the centrifugal block for clutch use component of pawl synchronous hunting, it is equipped between pawl and centrifugal block for clutch use component for guaranteeing that the limiter of speed limiting device that ratchet and pawl is staggered in normal work, the groove for winding wire ropes that rope sheave is circumferentially arranged are nicked V-shaped groove；The limit gear shaft protruded into each card hole and for limiting ratchet wheel angle is installed in the card hole of rope sheave circumferentially extending arc, base at least provided with a length on ratchet；Switch is installed on ratchet to re-pack.Operation of the present invention is easy, stable and reliable for performance, installation footprint is small, long service life, safety coefficient are high, and the elevator governor for having computer room of 2.5m/s is less than or equal to suitable for all normal speeds.
Description
Technical field
The invention belongs to elevators fields, are related to a kind of elevator governor, specifically a kind of centrifugal elevator governor.
Background technique
Elevator governor is one of the safety con-trol part in elevator safety protection system, elevator because non-normal working certain
Kind of reason declines elevator overspeed, and when decrease speed reaches preset limit value, elevator governor movement or elevator governor
It links with safety tongs, makes lift car stop.
A kind of elevator governor exists in the prior art, when the speed of lift car is more than preset speed, centrifugal drying
Block is swung under the influence of centrifugal force, is triggered the frizzen on electric switch, is powered off elevator device, if the carriage limit exceeds the speed limit
When operation, limiter of speed mechanical action, rope clamping block clamping steel wire rope generates stable lifting power in clamping device, triggers safety system
Dynamic device action, after limiter of speed machine work triggers safety tongs movement, wirerope needs to skid, and contacts in clamping device with wirerope
Rope clamping block it is easy to wear, therefore need periodic inspection, adjustment or replacement, meanwhile, the chucking power of clamping device be not easy it is excessive, otherwise
It will cause limiter of speed or brake apparatus damage.
Above-mentioned limiter of speed needs to be adjusted using lifting power of the dedicated test equipment to limiter of speed to meet before factory
Actual use demand, it is complicated for operation, it wastes time, and structure is complicated for such limiter of speed, increases production cost, due to folder
The setting for holding mechanism, occupied space is larger when making its installation；And such limiter of speed is used to limit the limit of ratchet wheel angle
Part is provided only with one, when the carriage of elevator rapidly drops, by the engagement of ratchet and pawl come when realizing emergency stop, and ratchet and pawl
The torsion that engagement generates is transmitted on base by locating part, and after long-time use, the position that base is equipped with locating part occurs
Deformation, leads to that the performance of limiter of speed is unstable, safety coefficient reduces, and shortens the service life of elevator governor.
Summary of the invention
It is existing in the prior art above insufficient to solve, the present invention is intended to provide a kind of centrifugal elevator governor, with
Reach that structure is simple, safety coefficient is high, purpose with long service life.
To achieve the above object, the technical solution adopted in the present invention is as follows: a kind of centrifugal elevator governor, including machine
Seat, the rope sheave being rotationally connected on base by sheave shaft, is rotationally connected on sheave shaft the electric switch being fixedly arranged on base
Ratchet, the centrifugal drying with the pawl of ratchet cooperation and with pawl synchronous hunting is rotatably connected to by pawl shaft on the rope sheave
Block assembly, equipped with ratchet and pawl is staggered in normal work for guaranteeing limiter of speed between the pawl and centrifugal block for clutch use component
Limiting device, the groove for winding wire ropes that the rope sheave is circumferentially arranged be nicked V-shaped groove；The ratchet up to
It is equipped with the card hole that a length circumferentially extends arc along rope sheave less, is installed with and is protruded into each card hole and for limiting along the base
The limit gear shaft of ratchet wheel angle processed；The switch that the frizzen movement for controlling electric switch is installed on the ratchet is beaten
Plate.
As limitation of the invention: there are two the card hole is set, and being symmetrically set in the two sides of sheave shaft, the card hole is
With concentric arc-shaped of rope sheave.
As limitation of the invention further: the position that the base is equipped with limit gear shaft is installed with stiffening plate.
As to further restriction of the invention: the centrifugal block for clutch use component includes two and is rotationally connected on rope sheave
Centrifugal block for clutch use and the pull rod that two centrifugal block for clutch use are connected to realization linkage, one of centrifugal block for clutch use are rotationally connected with pawl
On axis, it is installed with limiting device with one end of the centrifugal block for clutch use of pawl axis connection, one end is installed with for setting centrifugal speed
Speed-limiting device.
As to further restriction of the invention: the speed-limiting device includes screw rod, the set that one end is fixedly arranged on rope sheave
The spring that is connected on screw rod, be fixedly arranged on centrifugal block for clutch use and be socketed on screw rod it is not connected have rope sheave one end and guiding risen to screw rod make
Axle bed, the one end of the spring far from rope sheave limit the length of spring-compressed by nut.
As to a kind of restriction of the invention: the one end for being not provided with speed-limiting device with the centrifugal block for clutch use of pawl axis connection is fixed
There is the trigger member for controlling electric switch movement.
Limit as to another kind of the invention: the centrifugal elevator governor further includes that one end is fixedly arranged on ratchet,
One end is fixedly arranged on the reset spring on base for resetting ratchet.
As to still another restriction of the invention: the centrifugal elevator governor further includes that one end is fixedly arranged on pawl
On, one end is fixedly arranged on rope sheave for tensing the tension spring of pawl
By adopting the above-described technical solution, compared with prior art, the present invention acquired beneficial effect is:
(1) rope sheave slot structure of the invention is nicked V-shaped groove, passes through the friction between two bevel edges of wirerope and rope sheave slot
Traction generates stable lifting power, to trigger safety catch movement, eliminates complicated wirerope clamping device,
Structure is simple, has effectively saved production cost, and reduce installation space, due to using traction, when limiter of speed machinery touches
Wirerope allows to skid after hair safety tongs movement, protects limiter of speed and safety device；
(2) limit gear shaft is equipped with two by the present invention, has effectively dispersed the limit of limiter of speed stop moment after increasing limit gear shaft
The impact force that gear shaft and base junction are subject to, meanwhile, it is equipped with stiffening plate in limit gear shaft and base junction, improves speed limit
The integral strength of device base deforms after preventing limiter of speed base to be hit, and improves the service life of product；
(3) it is set on rope sheave of the invention there are two centrifugal block for clutch use, is installed with speed-limiting device on one of centrifugal block for clutch use, passes through tune
The decrement of spring in whole speed-limiting device to limit the amplitude of centrifugal block for clutch use swing, and then limits lift car tenesmus and reaches more
When big speed, ratchet and pawl engagement, and two centrifugal block for clutch use realize linkage by pull rod, save another centrifugal block for clutch use
Speed-limiting device is installed, the volume of elevator governor is reduced；
(4) ratchet of the invention is equipped with the spring for reset, improves the degree of automation of elevator governor.
In conclusion structure of the invention deft design, easy to operate, stable and reliable for performance, installation footprint is small, use
Service life is long, safety coefficient is high, and the elevator governor for having computer room of 2.5m/s is less than or equal to suitable for all normal speeds.
Detailed description of the invention
With reference to the accompanying drawing and specific embodiment makees more detailed description to the present invention.
Fig. 1 is the schematic view of the front view of the embodiment of the present invention；
Fig. 2 is the schematic view of the front view of the 1 inside elevator governor of base of Fig. 1；
Fig. 3 is the backsight structural representation of the 1 inside elevator governor of base of Fig. 1；
Fig. 4 is the structural schematic diagram of 4 groove profile of rope sheave.
In figure: 1- base, 2- electric switch, 3- frizzen, 4- rope sheave, 5- ratchet, 6- pawl, 7- centrifugal block for clutch use component,
71- centrifugal block for clutch use, 72- pull rod, 8- stiffening plate, 9- limit gear shaft, 10- card hole, and 11- switch re-packs, 12- trigger member, 13- limit
Device, 131- torsional spring, 132- claw axis, 133- claw, 134- holding screw, 14- speed-limiting device, 141- axle bed, 142- screw rod,
143- spring, 15- reset spring, 16- tension spring.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.It should be appreciated that described herein centrifugal
Elevator governor is preferred embodiment, is merely to illustrate and explain the present invention, and is not construed as limiting the invention.
The centrifugal elevator governor of embodiment
The present embodiment is as shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of centrifugal elevator governor, including base 1, is fixedly arranged on base 1
On electric switch 2, the rope sheave 4 being rotationally connected on base 1 by sheave shaft, the ratchet 5 that is rotationally connected on sheave shaft, institute
State the frizzen 3 being installed on electric switch 2 for powering off elevator device；Spoke there are four being set on the rope sheave 4, the rope
The groove for winding wire ropes that wheel 4 is circumferentially arranged is nicked V-shaped groove, connects the wirerope of lift car around rope
V-shaped groove on wheel 4, friction traction of two of the V-shaped groove between bevel edge and wirerope generate stable lifting power, because
This can save clamping device in the prior art, reduce the volume of elevator governor, save production cost.
The pawl 6 and synchronous with pawl 6 cooperated with ratchet 5 is rotatably connected to by pawl shaft on the spoke of the rope sheave 4
The centrifugal block for clutch use component 7 of swing, the centrifugal block for clutch use component 7 include two centrifugal dryings being rotationally connected on the spoke of rope sheave 4
The middle part of block 71 and pull rod 72, one of centrifugal block for clutch use 71 is rotationally connected in pawl shaft, in another centrifugal block for clutch use 71
Portion is rotationally connected on the spoke of rope sheave 4 by pin shaft, and two centrifugal block for clutch use 71 are symmetrically arranged, i.e. rotation 180 degree
After be overlapped, two centrifugal block for clutch use 71 realize linkage by the pull rod 72 that is rotationally connected on centrifugal block for clutch use 71, the pull rod 72
Both ends are rotationally connected with respectively on two centrifugal block for clutch use 71, keep the swing state of two centrifugal block for clutch use 71 consistent, are connected with pawl shaft
One end of the centrifugal block for clutch use 71 connect is installed with for guaranteeing that the limiter of speed limit that pawl 6 and ratchet 5 are staggered in normal work fills
13 are set, the other end is installed with the speed-limiting device 14 for setting centrifugal speed.
The one end for being not provided with speed-limiting device 14 with the centrifugal block for clutch use 71 of pawl axis connection is installed with for controlling electric switch 2
The trigger member 12 of movement, the trigger member 12 are the bolt or screw rod being bolted on centrifugal block for clutch use 71, when rope sheave 4 exceeds the speed limit, from
The heart gets rid of block 71 and swings, and trigger member 12 is contacted with the frizzen 3 on electric switch 2, and elevator device power-off, lift car stops
Operation；Ratchet 5 and pawl 6 is needed to cooperate limiter of speed mechanical action, triggering safety when elevator still overspeed after electrical triggering
Brake apparatus, stop elevator carriage.
The limiting device 13 includes the claw 133 being rotationally connected on 4 spoke of rope sheave by claw axis 132 and is socketed on
Torsional spring 131 on claw axis 132 for being kept in contact claw 133 and pawl 6, one end and the pawl 6 of the claw 133 connect
Touching, the other end are contacted by the holding screw 134 being fixedly arranged on claw 133 with centrifugal block for clutch use 71, a torsion of the torsional spring 131
Arm is fixedly arranged on rope sheave 4, another torque arm is fixedly arranged on claw 133, and the claw 133 begins under the twisting force of torsional spring 131
Keep eventually with the contact of pawl 6, make pawl 6 and ratchet 5 trend that holding is staggered when elevator works normally；When 4 revolving speed of rope sheave
When breaking speed limits, the centrifugal block for clutch use 71 is swung, due to the centrifugal block for clutch use 71 and claw 133 with pawl axis connection
It is in contact, therefore claw 133, with the swaying direction rotation of centrifugal block for clutch use 71, claw 133 and pawl 6 are detached from, release pawl 6,
Again because being connected with the tension spring 16 for tensing pawl 6 between pawl 6 and rope sheave 4, the tension spring 16 is released post-tensioning in pawl 6
Pawl 6 cooperates pawl 6 and ratchet 5, is installed with what the frizzen 3 for controlling electric switch 2 acted on the ratchet 5
Switch re-packs 11, ratchet 5 after cooperating with pawl 6 with the rotation of rope sheave 4 and rotate, meanwhile, be fixedly arranged on opening on ratchet 5
Pass re-packs 11 to be contacted with the frizzen 3 of electric switch 2, powers off elevator, and ratchet 5 and the cooperation of pawl 6, makes rope sheave 4 no longer
Rotation forces elevator to stop tenesmus.
The speed-limiting device 14 includes the screw rod 142 that one end is fixedly arranged on 4 spoke of rope sheave, the bullet being socketed on screw rod 142
Spring 143, the axle bed 141 being fixedly arranged on centrifugal block for clutch use 71, the centre of the axle bed 141 are equipped with through-hole, and the screw rod 142 is not connected
There is one end of rope sheave 4 to protrude into the through-hole of axle bed 141 to move up and down with the swing of centrifugal block for clutch use 71,141 pairs of silks of the axle bed
Bar 142 play the guiding role；Described 143 one end of spring is fixedly arranged on the spoke of rope sheave 4, and one end is by being bolted on screw rod 142
Nut limits the length that spring 143 compresses, and when compression of the nut to spring 143 is bigger, the amplitude that centrifugal block for clutch use 71 is swung is got over
Greatly, that is, the centrifugal speed limited is bigger, conversely, the centrifugal speed limited is smaller.
Set that there are two length on the ratchet 5 and circumferentially extend along rope sheave 4 card hole 10 of arc, the card hole 10 is and rope sheave
4 is concentric arc-shaped, and left and right (Fig. 2 or so) is symmetrically set in the two sides of sheave shaft, is installed on the base 1 and protrudes into each card
Limit gear shaft 9 in hole 10 and for limiting 5 rotational angle of ratchet, makes the rotation of ratchet 5 be only limitted to the arc length of card hole 10,
The limit gear shaft 9 is fixedly arranged on base 1 by nut, and the position that the base 1 is equipped with limit gear shaft 9 is installed with stiffening plate
8, since ratchet 5 needs to prevent the rope sheave 4 of quick rotation to rotate, when ratchet 5 and the cooperation of pawl 6, can generate powerful
Impact force, and be transmitted on base 1 by sheave shaft and limit gear shaft 9, the setting of stiffening plate 8 can effectively prevent the change of base 1
Shape；The centrifugal elevator governor further includes that one end is fixedly arranged on one end on ratchet 5 and is fixedly arranged on base 1 for answering ratchet 5
The reset spring 15 of position.
When using the present embodiment, nut on 14 screw rod 142 of turn speed-limiting device, by adjusting the decrement of spring 143,
The limit velocity of rope sheave 4 is set, when the speed of rope sheave 4 breaks speed limits, the centrifugal force that centrifugal block for clutch use 71 is subject to is greater than
The elastic force of adjustment spring 143, centrifugal block for clutch use 71 are swung, the trigger member 12 on centrifugal block for clutch use 71 and the touching on electric switch 2
It sends out bar 3 to contact, elevator device power-off, when electric braking failure, centrifugal block for clutch use 71 continues to swing, and contradicts tight on claw 133
Determine screw 134, while contradicting claw 133, be detached from pawl 6 and claw 133, the pawl 6 under the action of tension spring 16 with spine
5 cooperation of wheel, the ratchet 5 and rope sheave 4 rotate coaxially, the frizzen that the switch on the ratchet 5 re-packs on 11 and electric switch 2
3 contacts, elevator device power-off, since ratchet 5 is only able to rotate certain angle, after ratchet 5 and the cooperation of pawl 6, ratchet 5
It stops operating after rotating certain angle, rope sheave 4 is connected on ratchet 5 and also stops operating, and last lift car stops tenesmus.
Claims (8)
1. a kind of centrifugal elevator governor is rotatablely connected including base, the electric switch being fixedly arranged on base, by sheave shaft
In being rotatably connected on the rope sheave on base, the ratchet that is rotationally connected on sheave shaft, the rope sheave by pawl shaft and ratchet
The pawl of cooperation and centrifugal block for clutch use component with pawl synchronous hunting are equipped between the pawl and centrifugal block for clutch use component for protecting
Demonstrate,prove the limiter of speed limiting device that ratchet and pawl is staggered in normal work, it is characterised in that: the use that the rope sheave is circumferentially arranged
In winding wire ropes groove be nicked V-shaped groove；Arc is circumferentially extended along rope sheave at least provided with a length on the ratchet
The card hole of shape is installed with the limit gear shaft protruded into each card hole and for limiting ratchet wheel angle on the base；It is described
The switch that the frizzen movement for controlling electric switch is installed on ratchet re-packs.
2. centrifugal elevator governor according to claim 1, it is characterised in that: there are two the card hole is set, and it is symmetrical
Set on the two sides of sheave shaft, the card hole is and concentric arc-shaped of rope sheave.
3. centrifugal elevator governor according to claim 2, it is characterised in that: the base is equipped with limit gear shaft
Position is installed with stiffening plate.
4. centrifugal elevator governor described in any one of -3 according to claim 1, it is characterised in that: the centrifugal block for clutch use
Component includes two centrifugal block for clutch use being rotationally connected on rope sheave and two centrifugal block for clutch use is connected to the pull rod of realization linkage,
One of centrifugal block for clutch use is rotationally connected in pawl shaft, is installed with limit dress with one end of the centrifugal block for clutch use of pawl axis connection
It sets, one end is installed with the speed-limiting device for setting centrifugal speed.
5. centrifugal elevator governor according to claim 4, it is characterised in that: the speed-limiting device includes that one end is fixed
In on rope sheave screw rod, be socketed on screw rod spring, be fixedly arranged on centrifugal block for clutch use and be socketed on that screw rod is not connected rope sheave one
The length held and nut restriction spring-compressed is passed through to the axle bed that screw rod play the guiding role, the described one end of spring far from rope sheave.
6. centrifugal elevator governor according to claim 5, it is characterised in that: not with the centrifugal block for clutch use of pawl axis connection
One end equipped with speed-limiting device is installed with the trigger member for controlling electric switch movement.
7. centrifugal elevator governor described in any one of -3,5,6 according to claim 1, it is characterised in that: the centrifugation
Formula elevator governor further includes that one end is fixedly arranged on ratchet, and one end is fixedly arranged on the reset spring on base for resetting ratchet.
8. centrifugal elevator governor according to claim 7, it is characterised in that: the centrifugal elevator governor also wraps
It includes one end to be fixedly arranged on pawl, one end is fixedly arranged on rope sheave for tensing the tension spring of pawl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910732240.3A CN110329872A (en) | 2019-08-09 | 2019-08-09 | Centrifugal elevator governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910732240.3A CN110329872A (en) | 2019-08-09 | 2019-08-09 | Centrifugal elevator governor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110329872A true CN110329872A (en) | 2019-10-15 |
Family
ID=68149042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910732240.3A Pending CN110329872A (en) | 2019-08-09 | 2019-08-09 | Centrifugal elevator governor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110329872A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114261865A (en) * | 2021-12-31 | 2022-04-01 | 海南大学 | Speed-limiting braking protection device and application thereof in elevator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06146946A (en) * | 1992-11-11 | 1994-05-27 | Nippondenso Co Ltd | Governor of fuel injection device |
| TW512808U (en) * | 2002-02-20 | 2002-12-01 | Yuan Feng Yi Industry Co Ltd | Improved structure for hand puller |
| CN2804028Y (en) * | 2005-06-01 | 2006-08-09 | 宁波申菱电梯配件有限公司 | Two-way speed limiter of elevator |
| CN102913360A (en) * | 2012-11-12 | 2013-02-06 | 白文广 | Air-cooled diesel engine starter |
| CN206307861U (en) * | 2016-11-08 | 2017-07-07 | 中国南方电网有限责任公司超高压输电公司广州局 | A kind of rolling-type bandage device |
| CN209143433U (en) * | 2018-03-15 | 2019-07-23 | 杭州沪宁电梯部件股份有限公司 | Rope sheave governor trigger mechanism |
| CN210505138U (en) * | 2019-08-09 | 2020-05-12 | 石家庄通安机械有限公司 | Centrifugal elevator speed limiter |
-
2019
- 2019-08-09 CN CN201910732240.3A patent/CN110329872A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06146946A (en) * | 1992-11-11 | 1994-05-27 | Nippondenso Co Ltd | Governor of fuel injection device |
| TW512808U (en) * | 2002-02-20 | 2002-12-01 | Yuan Feng Yi Industry Co Ltd | Improved structure for hand puller |
| CN2804028Y (en) * | 2005-06-01 | 2006-08-09 | 宁波申菱电梯配件有限公司 | Two-way speed limiter of elevator |
| CN102913360A (en) * | 2012-11-12 | 2013-02-06 | 白文广 | Air-cooled diesel engine starter |
| CN206307861U (en) * | 2016-11-08 | 2017-07-07 | 中国南方电网有限责任公司超高压输电公司广州局 | A kind of rolling-type bandage device |
| CN209143433U (en) * | 2018-03-15 | 2019-07-23 | 杭州沪宁电梯部件股份有限公司 | Rope sheave governor trigger mechanism |
| CN210505138U (en) * | 2019-08-09 | 2020-05-12 | 石家庄通安机械有限公司 | Centrifugal elevator speed limiter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114261865A (en) * | 2021-12-31 | 2022-04-01 | 海南大学 | Speed-limiting braking protection device and application thereof in elevator |
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