CN106995173A - The restored method of restraint device, the elevator for possessing restraint device and restraint device - Google Patents
The restored method of restraint device, the elevator for possessing restraint device and restraint device Download PDFInfo
- Publication number
- CN106995173A CN106995173A CN201610920096.2A CN201610920096A CN106995173A CN 106995173 A CN106995173 A CN 106995173A CN 201610920096 A CN201610920096 A CN 201610920096A CN 106995173 A CN106995173 A CN 106995173A
- Authority
- CN
- China
- Prior art keywords
- housing
- restraint device
- compensation
- bar
- belt wheel
- 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.)
- Granted
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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
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The present invention provides a kind of restraint device and elevator that restore can just safely restraint device without using larger instrument.Housing (16) has for located at compensation belt wheel frame (13) and the through hole (20) that there is the first bar (17) of ridge (17a) to run through in periphery, it is also equipped with fixture structural unit (19), the fixture structural unit (19) is screwed togather with the first ridge (17a), clip housing (16) and configure in the side opposite with compensation belt wheel frame (13), in the case of making the fixture structural unit (19) rotation with the first bar (17) for axle in horizontal profile, at least there is region that also will not be overlapping with through hole (20) under the arbitrary anglec of rotation in a part, first ridge (17a) is set to following location：When housing (16) is constrained in constraint guide rail (15) by limiting mechanism (A), pass through the position tightened fixture structural unit (19) and make fixture structural unit (19) to be contacted with housing (16).
Description
Technical field
The present invention relates to the recovery of constraint (tie down) device, the elevator and restraint device that possess the restraint device
Method.
Background technology
There is following situation in elevator：Hung to compensate produced in the lifting of lift car and balance weight, master
The lift car side of rope and the deviation of the weight of balance heavy side, the compensation for possessing the bottom for linking lift car and balance weight are hung
Rope.Provided with compensation belt wheel and restraint device in such elevator, the compensation belt wheel is used to guide compensation hoist cable and it is given
Tension force, to avoid the compensation hoist cable in lift car and balance weight lifting from tampering and touched with other parts in liftway
Hit, restraint device limitation compensates takeofing for belt wheel, to avoid following situation：When elevator emergency stops, because of the deceleration of moment
Spend and balance weight is flown up, main hoist cable is departed from the rope sheave of hoist engine；Or because making compensation band compensating the pull-up of hoist cable
Wheel takeoffs.In addition, elevator emergency stop and after restraint device acted, in the case where confirming after safety, it is necessary to by
Attendant restores restraint device.It is used as the fixture for restoring restraint device, it is known to such as (Japanese Unexamined Patent Publication of patent document 1
2000-118913)。
Following content has been recorded in patent document 1：" dashed forward respectively relative in the lower section of multiple wedges in body frame
Go out to be provided with wedge-shaped high-strength bolt and via these wedge-shaped high-strength bolts that the wedge is elastic force-applying multiple downward
By the restraint device of the elevator of pressing spring, it is configured to possess pressing bolt and supporting member, the pressing bolt has in upper end
It can be used in and discharge the snap fastener that the wedge release clip of the wedge engages with the bottom of the wedge-shaped high-strength bolt, should
Supporting member is using union body the bottom of the pressing bolt will to be kept to screw togather body and the body frame is mounted in screw togather state
On top bearing member link ".
Citation
Patent document 1：Japanese Unexamined Patent Publication 2000-118913 publications
Restraint device described in patent document 1 is bound rail guidance to move along the vertical direction, and positioned at benefit
Repay the top of belt wheel.In addition, generally, compensation belt wheel rotatably supported by compensation belt wheel frame, compensation belt wheel frame be provided with to
The guide rod of top extension, the guide rod (bar) runs through restraint device.In addition, in such restraint device, in restraint device
Housing and compensation belt wheel frame between provided be directed rod guiding buffer spring (constraint spring), by make compensation belt wheel frame with
The distance of restraint device is close and is compressed.
But, in the case where restraint device is acted in the state of elevator emergency stopping, compensation hoist cable are pulled up, when
Attendant is using when making the fixture that restraint device restores, the elastic force that buffer spring is accumulated is released described in patent document 1
Put, restraint device takeoffs and larger danger is caused to attendant.Thus, the restraint device in the state of compensation hoist cable is pulled up
In the case of being acted, it has to while suppressing the takeofing while filling constraint of restraint device using chain block, jack
Recovery is put, to avoid the restraint device in the comeback job of restraint device from takeofing, so as to expend more workload.
The content of the invention
The present invention uses following structure in order to solve above-mentioned problem,
Restraint device possesses：Housing；First bar, it is located at compensation belt wheel frame and through the housing, the compensation belt wheel
Frame will guide the compensation belt wheel for compensating hoist cable to rotatably support, and the compensation hoist cable is connected between lift car and balance weight
And the deviation of the weight of the main hoist cable of compensation；Buffer spring, it is guided by first bar, and in the housing and the compensation band
Stretched between wheel frame；And limiting mechanism, its elevator emergency stop and the housing by power upward when, will be described
Housing limits and is constrained in the guide portion of the constraint guide rail of the movement for the above-below direction for guiding the housing, it is characterised in that institute
Stating housing has the through hole for supplying the first bar insertion, and first bar has the first ridge, the constraint dress in periphery
Put and be also equipped with fixture structural unit, first ridge of the fixture structural unit and first bar is screwed togather, and clip the housing and
Configure in the side opposite with the compensation belt wheel frame, make the fixture structural unit using first bar as axle in horizontal profile
In the case of rotation, at least there is region that also will not be overlapping with the through hole under the arbitrary anglec of rotation in a part,
First ridge is set to following location, i.e. be constrained in the constraint guide rail by the limiting mechanism in the housing
The guide portion in the case of, by tightening the fixture structural unit fixture structural unit can be made to be contacted with the housing.
Invention effect
According to the present invention, without that just safely can restore restraint device using larger utensil as in the past.
Brief description of the drawings
Fig. 1 is the brief configuration figure of the elevator using the present invention.
Fig. 2 be illustrate the present invention usual operating when restraint device and surrounding member annexation front view.
Fig. 3 be illustrate the present invention emergent stopping when restraint device and surrounding member annexation front view.
Fig. 4 is to illustrate to prevent the front view of the state takeoff of restraint device in the restrained condition releasing of restraint device.
Fig. 5 is the side view of the structure of the limiting mechanism and cancel system that illustrate restraint device.
Fig. 6 is the side view for representing to relieve the state of the restrained condition based on limiting mechanism using cancel system
Description of reference numerals：
6 compensation hoist cables
7 compensation belt wheels
8 restraint devices
13 compensation belt wheel frames
15 constraint guide rails
15a guide portions
16 housings
16a tops
In the middle part of 16b
16c bottoms
17 first bars
The ridges of 17a first
19 fixture structural units
20 through holes
A limiting mechanisms
B cancel systems
Embodiment
Hereinafter, embodiment is illustrated using accompanying drawing.
[embodiment]
Fig. 1 represents the summary of the elevator provided with restraint device.The elevator of the present invention possesses：Utilize the cunning for being wound in hoist engine
Take turns the main hoist cable 3 of 1 and deflector sheave 2 and suspend the lift car 4 and balance weight 5 for hanging like in midair；With lift car 4 and flat
Weight 5 links and compensated the compensation hoist cable 6 of the deviation of the weight of main hoist cable 3；Guiding compensation hoist cable 6 and the compensation band for giving tension force
Wheel 7；Give tension force to compensation hoist cable 6 when in usual operating, in emergent stopping when compensation belt wheel 7 is takeoff in the way of carry out
The restraint device 8 of position limitation；Guide the constraint guide rail 15 of the movement of the up and down motion of restraint device 8；Detecting elevator car
Lift car 4 is constrained in the lift car emergency braking apparatus of car guide rail 9 by the lifting speed in railway carriage or compartment 4 when exceeding setting
10；And it is tight with balance weight that balance weight 5 is synchronously constrained in counter-weight guide rails 11 by the action of lift car brake hard 10
Anxious brake apparatus 12.It should be noted that eliminating compensation belt wheel frame 13 in Fig. 1.
The annexation of restraint device and peripheral device when Fig. 2 represents generally to operate.Restraint device 8 is located at constraint dress
The deadweight holding unit 14 of the top for putting 8 and the deadweight for supporting restraint device 8 is held in the guide portion 15a of constraint guide rail 15.
Here, the deadweight holding unit 14 in the present embodiment includes：In the way of clamping guide portion 15a arranged opposite two
Individual retainer body 14a；Configure the friction boots 14b in the face opposed with retainer body 14a guide portion 15a；One end is with a side's
Retainer body 14a connections and through the opposing party retainer body 14a and there is the (not shown) of spring-loaded portion in the other end
Guide rod；The holding for configuring and being guided by guide rod (not shown) between the retainer body 14a and spring-loaded portion of the opposing party
Spring 14c.Thus, in the case where the power of the deadweight above of restraint device 8 applies to deadweight holding unit 14, deadweight keeps single
Member 14 moves up and down along guide portion 15a in the lump with restraint device 8.In addition, compensation belt wheel 7 (not shown) is rotatably supported
In compensation belt wheel frame 13.
In addition, restraint device 8 includes：The housing 16 being made up of top 16a, middle part 16b, bottom 16c；Located at compensation belt wheel
Frame 13 and upward extension simultaneously have the first ridge 17a the first bar 17 through restraint device and in periphery；Through housing 16
Bottom 16c and compensation belt wheel frame 13 top and housing 16 top 16a between stretch buffer spring 18；And with
One bar 17 screws togather and configures the fixture structural unit 19 in the outside of housing 16.In addition, being provided with the top 16a of housing 16 is used for
For the first bar 17 through hole 20 protruding to the outside.It should be noted that in the present embodiment, fixture structural unit 19 is set into axle
Ring is but it is also possible to be nut.
Here, fixture structural unit 19 makes fixture structural unit 19 with the first bar 17 in the horizontal profile of restraint device 8 for axle
In the case of rotation, even if at least there is area that also will not be overlapping with through hole 20 under the arbitrary anglec of rotation in a part
Domain.
Housing 16 is constrained when housing 16 is by power upward in addition, being provided with the housing 16 of restraint device 8
In the guide portion 15a of constraint guide rail 15 limiting mechanism A (saving the record slightly towards Fig. 2).It should be noted that limiting mechanism A
Concrete structure see below.
Next, for possessing the action of the restraint device during stopping of the elevator emergency for the restraint device that the above is constituted like that
Illustrate.
For example, when lift car emergency braking apparatus 10 is acted in the decline of lift car 4, balance weight 5 is inertially
Takeoff, compensation hoist cable 6 is pulled up.When compensation hoist cable 6 is pulled up, the compensation belt wheel frame 13 supported for compensation hoist cable 6 is pulled up,
Make the housing 16 of restraint device 8 by the power in upper direction via buffer spring 18.Due to being set on the housing 16 of restraint device 8
There is the limiting mechanism A acted when upward by power, therefore housing 16 is constrained in by constraint guide rail by limiting mechanism A
15 guide portion 15a.
Here, compensation belt wheel 7 is obtained the kinetic energy of ascent direction by the pull-up of compensation hoist cable 6 and continues to rise, but constraint dress
Put 8 to be bound after the constraint of guide rail 15, the compensation belt wheel 7 for continuing to rise compresses buffer spring 18 and absorbed kinetic energy, and
From the elastic force of the rising hindered of buffer spring 18, therefore stop it.Thus, restraint device 8 can limit compensation hoist cable 6 with
And compensate takeofing (rising) for belt wheel 7.
It should be noted that can also be by the way that there is gap between buffer spring 18 and housing 16 in usual operating
Mode configures buffer spring 18, to avoid making limiting mechanism A delay work because of earthquake etc..
The annexation of restraint device and surrounding member when Fig. 3 represents emergent stopping.The balance weight 5 takeoff by inertia
It is balanced weight emergency braking apparatus 12 and is constrained in counter-weight guide rails 11, so as to does not fall out.Thus, compensation hoist cable 6, which turns into, to be drawn
The state risen, restraint device 8 is bound guide rail 15 and constrained, therefore in emergent stopping, between housing 16 and compensation belt wheel frame 13
Buffer spring 13 turn into the state compressed, as accumulating springy state.
In addition, the other examples stopped as elevator emergency, enumerate balance weight 5 and the buffering located at the bottom of liftway
The situation that device (not shown) collides.In this case, the drive device of elevator stops, but until lift car is promptly made
During dynamic device 10 is acted, lift car 4 is set to increase because of inertia, therefore compensation hoist cable 6 turns into the state being pulled up,
Buffer spring 13 between housing 16 and compensation belt wheel frame 13 turns into the state compressed, as the springy state of accumulation.
Next, being illustrated for possessing the recovery of the elevator of the restraint device constituted as the present invention.
After emergent stopping, promptly made when confirming safe, it is necessary to release lift car emergency braking apparatus 10, balance weight
Dynamic device 12, the limiting mechanism A of restraint device 8 restrained condition.Lift car emergency braking apparatus 10 and balance weight are urgent
Brake apparatus 12 compensates the upper of hoist cable 6 by temporarily lifting and constraint relief state upward, but because restraint device 8 is limited
Rise, therefore, it is necessary first to the mechanism that lifts restrictions A restrained condition.But, due to be maintained in buffer spring 18 accumulate it is elastic
State, therefore when the restrained condition for the mechanism A that directly lifts restrictions, the elastic force of buffer spring 18 is released and makes restraint device
8 takeoff.
Fig. 4 represents to prevent the state takeoff of restraint device in the restrained condition releasing of restraint device.
As shown in figure 4, will be set to located at the first ridge 17a of the first bar 17, until by by fixture structural unit 19 to
The lower position that rotates (fastening) and can be contacted with the top 16a of housing 16.By so making fixture structural unit 19 be connect with housing 16
Touch, the elastic force between compensation belt wheel frame 13 and fixture structural unit 19 with buffer spring 18 can be made.In this manual, will be locking
Component is tightened and is defined as Contact operation with the process that housing 16 is contacted.
Thus, even if the restrained condition for the mechanism A that lifts restrictions, because the elastic force of buffer spring 18 is maintained at compensation belt wheel
Between frame 13 and fixture structural unit 19, therefore restraint device 8 will not takeoff, the restrained condition for the mechanism A that can safely lift restrictions.
It should be noted that in this manual, the process of the restrained condition for the mechanism that lifts restrictions is defined as to release process.
After the releasing process, by the way that fixture structural unit 19 is rotated up into (loosening), buffering elastic can be gently discharged
The elastic force of spring 18.Here, in this manual, fixture structural unit 19 to be unscrewed to and gently discharged the work of the elastic force of buffer spring 18
Sequence is defined as release process.
Fig. 5 represents the limiting mechanism of restraint device.Limiting mechanism A includes：Located at housing 16 middle part 16b and clip constraint
The guide portion 15a of guide rail 15 is opposed and in the acclivitous inclined plane 21 in side upward away from guide portion 15a；And configuration
Wedge 22 (friction fastened component) between inclined plane 21 and guide portion 15a.
By such structure, when housing 16 upward by power when, housing 16 is moved upward, and wedge 22 is relative to shell
Body 16 is relatively moved downward.Here, located at housing 16 inclined plane 21 turn into downward and close to constraint guide rail
15 guide portion 15a inclination, therefore pressed wedge 22 to guide portion 15a by inclined plane 21, wedge 22 turns into guide portion 15a
Rub fastening state.As described above, restraint device 8 turns into the state for being bound the constraint of guide rail 15.
In addition, restraint device 8 possesses the cancel system B for releasing the restrained condition based on limiting mechanism A.Cancel system B bags
Include：Located at the top 16a of housing 16 otch 24；Second bar 23 its located at the top of wedge 22 and upward extension and from otch 24
The second ridge 23a is provided with towards the protruding outside of housing 16, and in periphery；And rotating member 25, itself and the second ridge 23a
Screw togather, and in horizontal profile with the second bar 23 for axle make its rotate in the case of, at least a part have arbitrary
Region that also will not be overlapping with otch 24 in the anglec of rotation.In the present embodiment, rotating member 25 is set to nut, but it is also possible to
It is collar.
By such structure, rotating member 25 is tightened downward in the state of wedge 22 is constrained in guide portion 15a, by
This is contacted with the top 16a of housing 16, is further tightened, and wedge 22 is relatively moved upward thus relative to housing 16, base
Wedge 22 is released towards the guide portion 15a power pressed in the inclined plane 21 of housing 16, between wedge 22 and guide portion 15a
Friction fastening state is released from.Thus, it is possible to release the restrained condition (reference picture based on limiting mechanism A using cancel system B
6)。
In the case of such cancel system B, in release process, by the elastic force of buffer spring 18 make housing 16 by
To power upward, but due to relatively can not downward be moved relative to housing 16 in the presence of nut 25 using wedge 22
Structure, therefore will not using inclined plane 21 by wedge 22 to guide portion 15a press.Thus, it is possible to prevent in release process again
It is secondary to act limiting mechanism A.
As described above, according to the restraint device of the present invention, without using chain block, jack as in the past,
Just it safely can restore restraint device.
It should be noted that the invention is not restricted to the embodiments described, including various modifications example.In the above embodiments,
It is described in detail for the ease of understanding the explanation present invention, but is not limited to possess illustrated entire infrastructure.
Claims (6)
1. a kind of restraint device, it possesses：
Housing；
First bar, it is located at compensation belt wheel frame and through the housing, and the compensation belt wheel frame compensates the compensation of hoist cable by guiding
Belt wheel is rotatably supported, and the compensation hoist cable is connected between lift car and balance weight and the weight of the main hoist cable of compensation
Deviation；
Buffer spring, it is guided by first bar, and is stretched between the housing and the compensation belt wheel frame；And
Limiting mechanism, its elevator emergency stop and the housing by power upward when, the housing is limited and about
Beam in the guide portion of the constraint guide rail of the movement for the above-below direction for guiding the housing,
Characterized in that,
The housing has the through hole for the first bar insertion,
First bar has the first ridge in periphery,
The restraint device is also equipped with fixture structural unit, and first ridge of the fixture structural unit and first bar is screwed togather, and
Clip the housing and configure in the side opposite with the compensation belt wheel frame, by axle of first bar in horizontal profile
Make in the case that the fixture structural unit rotates, the fixture structural unit at least has under the arbitrary anglec of rotation also not in a part
The meeting region overlapping with the through hole,
First ridge is set to following location：The constraint guide rail is constrained in by the limiting mechanism in the housing
The guide portion in the case of, enable what the fixture structural unit was contacted with the housing by tightening the fixture structural unit
Position.
2. restraint device according to claim 1, it is characterised in that
The buffer spring is not contacted in usual operating with the housing.
3. restraint device according to claim 1, it is characterised in that
The restraint device is also equipped with cancel system, and the cancel system releases about pencil of the limiting mechanism to the housing
State.
4. restraint device according to claim 3, it is characterised in that
The limiting mechanism includes：It is located at the housing and opposed with the guide portion of the constraint guide rail and to direction
Top and away from the guide portion the inclined inclined plane in direction；And configure between the inclined plane and the guide portion
Rub fastened component,
The cancel system includes：
Second bar, it is located at the friction fastened component and extends upward, and has the second ridge in periphery；
Otch, it is located at the housing and for supplying second bar to the outside prominent of the housing；And
Rotating member, it screws togather and configured in the outside of the housing, in water with second ridge in second bar
In the case of making the rotating member rotation by axle of second bar in flat cutting faces, the rotating member is at least in a part
With region that also will not be overlapping with the otch under the arbitrary anglec of rotation.
5. a kind of elevator, it is characterised in that
The elevator possesses the lift car, the balance weight, the compensation hoist cable, the compensation belt wheel, the compensation band
Take turns the restraint device any one of frame, the constraint guide rail and Claims 1-4.
6. a kind of restored method of restraint device,
The restraint device possesses：
Housing；
First bar, it is located at compensation belt wheel frame and through the housing, and the compensation belt wheel frame compensates the compensation of hoist cable by guiding
Belt wheel is rotatably supported, and the compensation hoist cable is connected between lift car and balance weight and the weight of the main hoist cable of compensation
Deviation；
Buffer spring, it is guided by first bar, and is stretched between the housing and the compensation belt wheel frame；And
Limiting mechanism, its elevator emergency stop and the housing by power upward when, the housing is limited and about
Beam in the guide portion of the constraint guide rail of the movement for the above-below direction for guiding the housing,
Characterized in that,
The restored method of the restraint device includes：
Contact operation,, will when the restraint device is constrained in the guide portion by the limiting mechanism in the Contact operation
Clip the housing and the fixture structural unit in the opposite side of the compensation belt wheel frame and the first bar screw threads for fastening be screwed to
The housing contact；
Process is released, it is after the Contact operation, in the releasing process, release the restrained condition of the limiting mechanism；
And
Release process, it in the release process, unscrews the fixture structural unit after the releasing process.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016010228A JP6476142B2 (en) | 2016-01-22 | 2016-01-22 | Tie-down device, elevator equipped with tie-down device, and return method of tie-down device |
| JP2016-010228 | 2016-01-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106995173A true CN106995173A (en) | 2017-08-01 |
| CN106995173B CN106995173B (en) | 2019-03-15 |
Family
ID=59395320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610920096.2A Active CN106995173B (en) | 2016-01-22 | 2016-10-21 | The restored method of restraint device, the elevator for having restraint device and restraint device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6476142B2 (en) |
| CN (1) | CN106995173B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751277A (en) * | 2022-04-19 | 2022-07-15 | 日立电梯（中国）有限公司 | Balanced rescue system of elevator and elevator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113001159B (en) * | 2021-02-01 | 2022-10-21 | 江门星火减震器有限公司 | Spring recovery device of spring shock absorber |
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| CN201186424Y (en) * | 2008-04-03 | 2009-01-28 | 江西铜业集团公司 | Spring brake dismounting tool |
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| CN203071459U (en) * | 2012-12-18 | 2013-07-17 | 新密市供电公司 | Spring adjusting tool |
| CN103567973A (en) * | 2013-11-22 | 2014-02-12 | 南车戚墅堰机车有限公司 | Specialized maintenance device for spindle knife locking belleville spring |
| CN104143483A (en) * | 2013-09-26 | 2014-11-12 | 国家电网公司 | Tool for dismounting break-brake spring |
| WO2015015632A1 (en) * | 2013-08-02 | 2015-02-05 | 株式会社日立製作所 | Elevator device |
| WO2015121940A1 (en) * | 2014-02-13 | 2015-08-20 | 株式会社日立製作所 | Tie-down device |
| CN204662521U (en) * | 2015-04-30 | 2015-09-23 | 中国电建集团贵阳勘测设计研究院有限公司 | Damping type pre-tensioning device for joint meter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017043467A (en) * | 2015-08-27 | 2017-03-02 | 株式会社日立ビルシステム | Opening device for tie-down device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201186424Y (en) * | 2008-04-03 | 2009-01-28 | 江西铜业集团公司 | Spring brake dismounting tool |
| CN201285746Y (en) * | 2008-10-28 | 2009-08-05 | 山东电力集团公司超高压输变电分公司 | Voltage mutual inductor built-in replacer special for high voltage fuse |
| CN203071459U (en) * | 2012-12-18 | 2013-07-17 | 新密市供电公司 | Spring adjusting tool |
| WO2015015632A1 (en) * | 2013-08-02 | 2015-02-05 | 株式会社日立製作所 | Elevator device |
| CN104143483A (en) * | 2013-09-26 | 2014-11-12 | 国家电网公司 | Tool for dismounting break-brake spring |
| CN103567973A (en) * | 2013-11-22 | 2014-02-12 | 南车戚墅堰机车有限公司 | Specialized maintenance device for spindle knife locking belleville spring |
| WO2015121940A1 (en) * | 2014-02-13 | 2015-08-20 | 株式会社日立製作所 | Tie-down device |
| CN204662521U (en) * | 2015-04-30 | 2015-09-23 | 中国电建集团贵阳勘测设计研究院有限公司 | Damping type pre-tensioning device for joint meter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751277A (en) * | 2022-04-19 | 2022-07-15 | 日立电梯（中国）有限公司 | Balanced rescue system of elevator and elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017128430A (en) | 2017-07-27 |
| JP6476142B2 (en) | 2019-02-27 |
| CN106995173B (en) | 2019-03-15 |
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