CN100427375C - Speed regulator for elevator - Google Patents
Speed regulator for elevator Download PDFInfo
- Publication number
- CN100427375C CN100427375C CNB2005100884249A CN200510088424A CN100427375C CN 100427375 C CN100427375 C CN 100427375C CN B2005100884249 A CNB2005100884249 A CN B2005100884249A CN 200510088424 A CN200510088424 A CN 200510088424A CN 100427375 C CN100427375 C CN 100427375C
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- China
- Prior art keywords
- lift car
- governor weight
- claw
- rope
- action
- 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.)
- Expired - Fee Related
Links
- 210000000078 claw Anatomy 0.000 claims abstract description 38
- 238000012423 maintenance Methods 0.000 claims abstract description 30
- 210000000707 wrist Anatomy 0.000 claims description 25
- 230000000630 rising effect Effects 0.000 claims description 22
- 238000006073 displacement reaction Methods 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 230000003028 elevating effect Effects 0.000 abstract 2
- 241000269799 Perca fluviatilis Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
To provide a governor for an elevator possible to be accurately operated with simple structure and capable of preventing wrong operation of an inspecting part. This governor for an elevator is provided with an operation body 21 pivotally supported on the same shaft as a sheave 11 and having lock parts 24A to 24C, governor weights 15A and 15B provided with claw parts 18A and 18B on a side to be displaced to the outer diameter side by centrifugal force, a car stop switch 20 to be brought in contact with the claw part of the governor weight when elevating speed of a car 3 reaches a first set value, holding means 26, 27, 28, 30 and 31 for holding a governor rope when elevating speed reaches a second set value and the claw part of the governor weight is engaged with the lock part, an engaging means 33 provided in a peripheral position of the governor weight to be held in a waiting position in usual and to be displaced to an operation body side when performing maintenance work, and a lock means 40 provided in the engaging means to hold the engaging means in the waiting position in usual.
Description
Technical field
The present invention relates to speed regulator for elevator, relate in particular to a kind of speed regulator for elevator as described below, in this speed regulator for elevator, when the rising or falling speed of lift car reached first setting value, lift car stopped to use switch connection, in the electric control mode actuating device of lift car was stopped, and, when the rising or falling speed of described lift car reaches second setting value, make the emergency braking apparatus action, lift car is stopped.
Background technology
As look-ahead technique, a kind of speed regulator for elevator is disclosed in patent documentation 1, in this speed regulator for elevator, when the rising or falling speed of lift car reaches first and second setting value, in the electric control mode actuating device of lift car is stopped, and make the emergency braking apparatus action, thereby lift car is stopped.
Patent documentation 1 spy opens the 2001-106454 communique
Above-mentioned look-ahead technique has adopted following structure, that is, when the rising or falling speed of lift car reached first setting value, the claw by governor weight made lift car stop to use switch connection towards the displacement of external diameter side.; be used for when the rising or falling speed of lift car reaches second setting value, making the combining mechanism of the device action of braking speed controller rope, be configured to be arranged on and connect lift car and stop the structure that another claw with the claw opposition side end of switch combines by one.So, when the rising or falling speed of lift car reaches second setting value, can only utilize the small displacement towards internal side diameter of described another claw, the device of braking speed controller rope is braked accurately.Its result must guarantee that the combining mechanism that combines with described another claw of governor weight has accurate making precision and assembly precision, otherwise occur misoperation easily, in addition, also has the problem of the debugging operational difficulty of this combining mechanism.And, in traditional governor, though be provided with the maintenance examination that is used for maintenance examination with bar and be used for this maintenance examination with the remote operated maintenance examination steel rope of bar, but just how not prevent that this maintenance examination from making consideration with the aspect that misoperation appears in bar, so the occasion that might appear at beyond the maintenance examination causes the situation that elevator can not normal operation because of maintenance examination with the bar misoperation.
Summary of the invention
The object of the present invention is to provide a kind of speed regulator for elevator, this speed regulator for elevator is not only simple in structure, and action is accurate, and can prevent that maintenance examination from the position misoperation taking place.
To achieve these goals, speed regulator for elevator of the present invention is configured to, the action body with rope sheave with axle bearing, this action body is provided with locking part, the outside diameter of the governor weight that is shifted to the external diameter side under the action of centrifugal force that produces in described rope sheave rotation is provided with claw, lift car stops to be arranged on such position with switch, promptly, when the rising or falling speed of lift car reaches first setting value, rely on centnifugal force to stop to contact with described lift car, thereby be used in the detent action of the actuating device that drives described lift car lifting with switch to the claw of the described governor weight of external diameter side displacement; And, described action body is configured to, when the rising or falling speed of described lift car reaches second setting value, combine with locking part and be shifted to the claw of the described governor weight of external diameter side displacement, rely on this displacement and the enclasp device that will hold speed controller rope tightly is urged to and holds the position tightly; The circumferential position of described governor weight is provided with combining device, this combining device is maintained at the spare space usually, and when maintenance, be shifted towards described action side, when maintenance, by described combining device, the claw of described governor weight combines with described action body, and, have blocking device on described combining device, at ordinary times, this blocking device makes described combining device remain on the spare space.
(invention effect)
As mentioned above, the locking part that when the external diameter side is shifted, carries out combination by the claw that governor weight is set on the body in action, can utilize the significantly displacement of the claw of governor weight, the device of braking speed controller rope is braked exactly, and its result can access a kind of speed regulator for elevator, this speed regulator for elevator does not need the structure of high precision, do not need the assembling operation of high precision yet, not only simple in structure, and also action is accurately.In addition, the combining device that when governor carries out maintenance, is shifted, remaining on the spare space by blocking device at ordinary times, thus the occasion generation misoperation of combining device beyond maintenance can be prevented, thus can prevent effectively that the situation that can not turn round from appearring in elevator.
Description of drawings
Fig. 1 is the front view of expression speed regulator for elevator one embodiment of the present invention.
Fig. 2 is for removing the front view behind the action body among Fig. 1.
The front view of the state when Fig. 3 is the maintenance of presentation graphs 1.
Fig. 4 has used the scheme drawing of the elevator of speed regulator for elevator of the present invention for expression.
Among the figure: 1-building, 2-hoist trunk, 3-lift car, 8-emergency braking apparatus, the 9-throw rod, 10-speed controller rope, 11-rope sheave, 12-governor, 15A, 15B-governor weight, 18A, 18B-claw, the 20-lift car stops to use switch, and 21-moves body, 22A～22C-wrist, wrist is used in the 23-maintenance, 24A～24C-locking part, 26-holds wrist tightly, the 27-rope is held spring tightly, 28-spring shaft, 30-brake shoe, the 31-pipe link, 33-action movie, 40-pin.
The specific embodiment
Following according to Fig. 1 to Fig. 4, a form of implementation of speed regulator for elevator of the present invention is described.
As shown in Figure 4, elevator generally has the lift car 3 of lifting in the hoist trunk 2 that is arranged in the building 1, one side is suspended described lift car 3 in midair and opposite side and counterbalanced weight 4 bonded assembly master hoist cables 5, the traction sheave 6 of this main hoist cable 5 is used to reel, be used to the drive division (not shown) that drives this traction sheave 6 and have brake equipment, be used to guide the guide rail 7 of described lift car 3 liftings, be arranged in the described lift car 3 and be used for when emergency situation takes place, holding tightly the emergency braking apparatus 8 of described guide rail 7, be used to drive this emergency braking apparatus 8 and by the throw rod 9 of axle bearing in described lift car 3 sides, link and spread all over the speed controller rope 10 of the ring-type that the lifting travel of the whole lift car in the hoist trunk 2 is provided with this throw rod 9, and by axle bearing at the top of hoist trunk 2 and have a governor 12 of the rope sheave 11 of the described speed controller rope 10 that is used to reel.
Described governor 12 for example has the pedestal 13 that is fixed on described guide rail 7 tops, and the pivot shaft 14 that rotatably supports described rope sheave 11 is fixed on this pedestal 13.
In addition, by supporting pin 16A, 16B, a pair of governor weight 15A, 15B are installed in the sidepiece of described rope sheave 11 free to rotately, and this is linked and be constrained to by union lever 17 governor weight 15A, 15B and carries out identical action.This to the governor weight 15A among governor weight 15A, the 15B on, described union lever 17 links with the small size end a that is positioned at supporting pin 16A one side, and the large scale end b that is positioned at supporting pin 16A opposite side is formed with claw 18A.And on governor weight 15B, an end of balance spring 19 links with the small size end a that is positioned at supporting pin 16B one side, and the large scale end b that is positioned at supporting pin 16B opposite side is formed with claw 18B.In addition, the other end of described balance spring 19 contacts with the hub portion of rope sheave 11, thereby governor weight 15A, 15B are remained on certain position.
Lift car stops to be supported on the vertical component 13V of described pedestal 13 with switch 20, when the rising or falling speed of described lift car 3 reaches first setting value, this lift car stops to make with switch 20 the detent action of not shown actuating device, wherein, switch lever 20L is side-prominent towards described governor weight 15A, 15B.
In addition, action body 21 via not shown bearing and described rope sheave 11 coaxially static state be supported near the sidepiece of the governor weight 15A, the 15B that are used to support described rope sheave 11.On this action body 21, a plurality of wrist 22A～22C are extension radially with equal angles, and maintenance is extended from pivot shaft 14 sides towards the external diameter direction with wrist 23.The leading section of each wrist 22A～22C of this action body 21 has identical radius, and is bent into the peripheral part of described governor weight 15A, 15B overlapping and form locking part 24A～24C.This locking part 24A～24C be arranged on the claw 18A of described governor weight 15A, 15B, position that 18B combines on, wherein, when the rising or falling speed of lift car 3 reached second setting value, claw 18A, the 18B of described governor weight 15A, 15B relied on centnifugal force to be shifted towards the external diameter side.
An end of holding wrist 26 tightly is supported on the described pedestal 13 by supporting pin 25.This other end of holding wrist 26 tightly is formed with spring perch 26E, and the spring shaft 28 that the installation rope is held spring 27 tightly runs through spring perch 26E from the outside diameter of rope sheave 11 along internal side diameter ground in fact.And the outside diameter of spring shaft 28 is provided with and is used to bear the spring perch 27B that rope is held the end of spring 27 tightly.In addition, being used to push the brake shoe 30 that is wound on the speed controller rope 10 on the described rope sheave 11 is supported on by connecting pin 29 and holds wrist 26 tightly.
Described spring shaft 28 interior distolateral links via the pin 32 of pipe link 31 with described action body 21 wrist 22B.By these hold wrist 26 tightly, rope is held the enclasp device that spring 27, spring shaft 28, brake shoe 30 and pipe link 31 etc. are configured for holding tightly speed controller rope 10 tightly, and, by hold wrist 26 tightly, rope is held spring 27, spring shaft 28 and pipe link 31 etc. tightly and is constituted connecting device.
Below, the action of governor 12 with said structure is described.Carry out synchronous circulation by speed controller rope 10 with the lifting of lift car 3 and move, and make rope sheave 11 rotations.At this moment, with the corresponding centnifugal force of the rotative speed of rope sheave 11, just with the corresponding centrifugal action of the rising or falling speed of lift car 3 on the governor weight 15A, the 15B that together rotate with rope sheave 11.And when the rising or falling speed of lift car 3 surpassed specified value, governor weight 15A, 15B overcame the elastic force of balance spring 19 and are that rotate at the center with supporting pin 16A, 16B, and claw 18A, 18B are shifted towards the external diameter side thus.
And, the rising or falling speed of lift car 3 because of certain reason surpass first setting value, when for example reaching 1.3 times of command speed, under action of centrifugal force, the elastic force that the claw 18A of governor weight 15A, 15B, 18B side overcome balance spring 19 is shifted significantly towards the external diameter direction, cause described claw 18A, 18B to contact and make lift car stop usefulness switch 20 moving with switch lever 20L, when cut-out is used to drive the power supply of actuating device of lift car 3, make the detent action, thereby make lift car stop lifting in the electric control mode.
In addition, for example cause lift car 3 to descend when being cut off because of main hoist cable 5, the descending speed of lift car 3 surpasses second setting value, when for example reaching 1.4 times of command speed, with the caused action of centrifugal force of the corresponding rotation of this speed by rope sheave 11 under, governor weight 15A, the claw 18A of 15B, significantly displacement further takes place towards the external diameter direction in the 18B side, because this displacement, claw 18A, 18B combines with the locking part 24A～24C of each wrist 22A～22C front end of action body 21, and action body 21 is rotated towards the direction identical with rope sheave 11 hand of rotation.By the rotation of this action body 21, the pipe link 31 that links with wrist 22B is spurred towards rotation direction, and the wrist 26 of holding tightly that runs through spring shaft 28 is that the center is towards anticlockwise motion with supporting pin 25.Because this holds the rotation of wrist 26 tightly, brake shoe 30 pushings are wound on the speed controller rope 10 on the rope sheave 11, so that speed controller rope 10 stops to move.
Because this speed controller rope 10 stops and lift car 3 further descends, the throw rod 9 of lift car 3 sides is up promoted, after throw rod 9 is up promoted, be arranged on emergency braking apparatus 8 actions on the lift car 3, hold guide rail 7 tightly with powerful power, thereby lift car 3 is stopped.
More than Shuo Ming action is when lift car 3 normal operations and the action of rising or falling speed when reaching first and second setting value, below just check governor 12 whether the action when the maintenance of normal operation describe.
At first, with the maintenance of the action body 21 of pedestal 13 position relative with wrist 23 on be provided with action movie 33 as combining device, at ordinary times, this action movie 33 be maintained at not with the claw 18A of governor weight 15A, 15B, spare space that 18B combines on, and in when maintenance, 33 of this action movies towards described maintenance with the displacement of wrist 23 sides.The operation tool that this action movie 33 is configured to by steel rope 34 grades operates on it from the ceiling of elevator lobby and lift car 33 etc., and the hand of rotation displacement of rope sheave 11 that can be when lift car 3 descends.And, on action movie 33, be formed with and at ordinary times this action movie 33 remained on the blocking device of spare space, this blocking device for example is a pin 40, and this pin inserts in the not shown through hole that is formed on this action movie 33 and combines with the slot part 23a in the wrist 23 with being formed on to keep in repair.
When maintenance examination, the pin 40 that the operating personnel at first will have said structure takes out, to remove action movie 33 and to keep in repair with combining between the wrist 23.Then, as shown in Figure 3, action movie 33 with said structure is risen to when the maintenance examination and the claw 18A of governor weight 15A, 15B, the position that 18B combines with wrist 23 along maintenance.Under this state, lift car 3 is descended at a slow speed, claw 18A, the 18B of governor weight 15A, 15B combines with action movie 33, and after lift car 3 further descended, action movie 33 combined with wrist 23 with maintenance, thereby action body 21 is rotated.Rotation by action body 21, drive pipe link 31 and hold wrist 26 tightly, thereby the speed controller rope 10 that brake shoe 30 is pressed be wound on the rope sheave 11, make this speed controller rope 10 stop to move, after speed controller rope 10 stops to move, as mentioned above, make emergency braking apparatus 8 actions, thereby lift car 33 is stopped.
And, set the gap between brake shoe 30 and the speed controller rope 10 greater than the locking part 24B of action body 21 and the gap between the switch lever 20L, make under the effect of rotation of action body 21, before brake shoe 30 will be pressed against on the speed controller rope 10 that is wound on the rope sheave 11 at once, the locking part 24B of the wrist 22B of action body 21 combines with switch lever 20L, and lift car is stopped with switch 20 actions.
As mentioned above, according to present embodiment, can obtain a kind of speed regulator for elevator, in this speed regulator for elevator, locking part 24A～the 24C of action body 21 is set at than governor weight 15A, the claw 18A of 15B, 18B is more by on the position of outside diameter, so can make the governor weight 15A that is shifted by centnifugal force, the claw 18A of 15B, the shift amount of 18B increases, utilize the displacement significantly after this increase, can make 21 pairs of speed controller ropes 10 of action body carry out braking maneuver accurately, its result, this speed regulator for elevator does not need the structure and the assembling operation of high precision, and it is not only simple in structure, and action accurately.In addition, the action movie 33 that when governor carries out maintenance, is shifted, because it is remained on the spare space by the pin 40 as blocking device at ordinary times, so can prevent the occasion generation misoperation of action movie 33 beyond maintenance, thereby can prevent effectively that the situation that can not turn round from appearring in elevator.
Claims (2)
1. speed regulator for elevator, this speed regulator for elevator possesses:
Speed controller rope, this speed controller rope is driven by the lift car of lifting in the hoist trunk in being arranged at building;
Rope sheave, this rope sheave be used to reel speed controller rope and by axle bearing at described building;
Governor weight, this governor weight rely on the centnifugal force that is produced by the rotation of this rope sheave to be shifted towards the external diameter side;
Balance spring, this balance spring promotes this governor weight towards the direction opposite with described centnifugal force;
Lift car stops to use switch, and when the rising or falling speed of described lift car reached first setting value, this lift car stopped to be used in switch the detent action of the actuating device that drives described lift car lifting; And
Enclasp device, when the rising or falling speed of described lift car reached second setting value, this enclasp device was held described speed controller rope tightly, it is characterized in that:
Be coaxially installed with the action body with described rope sheave, this action body has locking part, outside diameter at described governor weight is provided with claw, described lift car stops to be arranged on such position with switch, promptly, when the rising or falling speed of described lift car reaches first setting value, rely on centnifugal force to stop to contact and making its connection with switch to the claw of the described governor weight of external diameter side displacement and described lift car; And, described action body is configured to, when the rising or falling speed of described lift car reaches second setting value, rely on centnifugal force to combine with locking part and be shifted to the claw of the described governor weight of external diameter side displacement, hold the position tightly thereby described enclasp device is urged to; The circumferential position of described governor weight is provided with combining device, this combining device is maintained at the spare space usually, and when maintenance, be shifted towards described action side, when maintenance, by described combining device, the claw of described governor weight combines with described action body, and, described combining device has blocking device, and at ordinary times, this blocking device remains on the spare space with described combining device.
2. speed regulator for elevator, this speed regulator for elevator possesses:
Speed controller rope, this speed controller rope is driven by the lift car of lifting in the hoist trunk in being arranged at building;
Be arranged on the pedestal in the hoist trunk;
Rope sheave, but this rope sheave is supported on this pedestal the speed controller rope that is used to reel emergency braking apparatus is moved with free rotation mode by axle;
A pair of governor weight, this is installed in rotation on this rope sheave governor weight, and the centnifugal force that relies on the rotation because of described rope sheave to produce is shifted;
Be used to union lever that this is linked mutually to governor weight;
Balance spring, this balance spring promotes described governor weight towards the direction opposite with described centnifugal force;
Lift car stops to use switch, and when the rising or falling speed of the described lift car that moves in described hoist trunk reached first specified value, this lift car stopped to be used in switch the detent action of the actuating device that drives described lift car lifting;
Brake shoe, this brake shoe and described speed controller rope moving contact are also carried out braking to it;
Movement device, when the rising or falling speed of described lift car reached second specified value, this movement device made described brake shoe be displaced to braking position by connecting device, it is characterized in that:
Described movement device has: be arranged on the claw on the described governor weight; Be arranged on the framework in the described governor weight outside, this framework is by described axle bearing, and links with described connecting device, but also has a plurality of wrists; And the outside diameter that is separately positioned on described wrist, the locking part that can contact with described claw;
When the rising or falling speed of described lift car reaches first specified value, described claw is connected described lift car towards the displacement of external diameter side and is stopped to use switch, when the rising or falling speed of described lift car reaches second specified value, described claw contacts with described locking part towards the displacement of external diameter side, via described connecting device described brake shoe is shifted towards braking position;
Described movement device also is provided with: action movie, this action movie is set at described framework bottom, move up along described framework, be displaced to the contacted maintenance of described claw position with described governor weight, on this maintenance position, swing according to situation about contacting, and combine with described framework with described claw; The steel rope that one end is connected with described action movie, the other end extends towards outer side; And the blocking device that at ordinary times described action movie is remained on the spare space.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004274326A JP4456967B2 (en) | 2004-09-22 | 2004-09-22 | Elevator governor |
| JP2004-274326 | 2004-09-22 | ||
| JP2004274326 | 2004-09-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1751981A CN1751981A (en) | 2006-03-29 |
| CN100427375C true CN100427375C (en) | 2008-10-22 |
Family
ID=36230514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100884249A Expired - Fee Related CN100427375C (en) | 2004-09-22 | 2005-07-28 | Speed regulator for elevator |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4456967B2 (en) |
| CN (1) | CN100427375C (en) |
| HK (1) | HK1088881A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5153863B2 (en) * | 2007-04-13 | 2013-02-27 | オーチス エレベータ カンパニー | Governor sheave with overlapping flyweight system |
| JP4974372B2 (en) * | 2007-11-07 | 2012-07-11 | 株式会社日立製作所 | Elevator governor |
| JP4589424B2 (en) * | 2008-06-18 | 2010-12-01 | 株式会社日立製作所 | Inspection system and inspection method for elevator safety device |
| JP5678111B2 (en) * | 2013-03-01 | 2015-02-25 | 株式会社日立製作所 | Elevator equipment |
| JP6296973B2 (en) * | 2014-12-24 | 2018-03-20 | 株式会社日立製作所 | Speed governor and elevator device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2038269A (en) * | 1978-12-28 | 1980-07-23 | Wyseplant Ltd | Safety braking assembly |
| US4556155A (en) * | 1983-04-13 | 1985-12-03 | Otis Elevator Company | Elevator governor |
| US5310022A (en) * | 1992-03-20 | 1994-05-10 | Otis Elevator Company | Mechanical overspeed safety device |
| CN1053633C (en) * | 1994-10-20 | 2000-06-21 | 三菱电机株式会社 | Elevator governor |
| JP2001106454A (en) * | 1999-10-05 | 2001-04-17 | Mitsubishi Electric Corp | Speed governor for elevator |
| CN1401554A (en) * | 2001-08-03 | 2003-03-12 | 东芝电梯株式会社 | Governor and lifter using same |
-
2004
- 2004-09-22 JP JP2004274326A patent/JP4456967B2/en not_active Expired - Fee Related
-
2005
- 2005-07-28 CN CNB2005100884249A patent/CN100427375C/en not_active Expired - Fee Related
-
2006
- 2006-09-26 HK HK06110694.2A patent/HK1088881A1/en not_active IP Right Cessation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2038269A (en) * | 1978-12-28 | 1980-07-23 | Wyseplant Ltd | Safety braking assembly |
| US4556155A (en) * | 1983-04-13 | 1985-12-03 | Otis Elevator Company | Elevator governor |
| US5310022A (en) * | 1992-03-20 | 1994-05-10 | Otis Elevator Company | Mechanical overspeed safety device |
| CN1053633C (en) * | 1994-10-20 | 2000-06-21 | 三菱电机株式会社 | Elevator governor |
| JP2001106454A (en) * | 1999-10-05 | 2001-04-17 | Mitsubishi Electric Corp | Speed governor for elevator |
| CN1401554A (en) * | 2001-08-03 | 2003-03-12 | 东芝电梯株式会社 | Governor and lifter using same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006089174A (en) | 2006-04-06 |
| JP4456967B2 (en) | 2010-04-28 |
| HK1088881A1 (en) | 2006-11-17 |
| CN1751981A (en) | 2006-03-29 |
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