CN106995173B - The restored method of restraint device, the elevator for having restraint device and restraint device - Google Patents

The restored method of restraint device, the elevator for having restraint device and restraint device Download PDF

Info

Publication number
CN106995173B
CN106995173B CN201610920096.2A CN201610920096A CN106995173B CN 106995173 B CN106995173 B CN 106995173B CN 201610920096 A CN201610920096 A CN 201610920096A CN 106995173 B CN106995173 B CN 106995173B
Authority
CN
China
Prior art keywords
shell
restraint device
compensation
belt wheel
bar
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.)
Active
Application number
CN201610920096.2A
Other languages
Chinese (zh)
Other versions
CN106995173A (en
Inventor
中山彻也
平野薰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of CN106995173A publication Critical patent/CN106995173A/en
Application granted granted Critical
Publication of CN106995173B publication Critical patent/CN106995173B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16Braking 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 can safely make restraint device restore without using larger tool.Shell (16) is with for being set to compensation belt wheel frame (13) and having the first bar (17) the perforative through hole (20) of thread (17a) in periphery, it is also equipped with fixture structural unit (19), the fixture structural unit (19) is screwed togather with the first thread (17a), it clips shell (16) and configures in the side opposite with compensation belt wheel frame (13), in the case where rotating the fixture structural unit (19) with the first bar (17) in horizontal profile for axis, at least there is region that will not be Chong Die with through hole (20) under arbitrarily rotation angle in a part, first thread (17a) is set to following position: when shell (16) is constrained in constraint guide rail (15) by limiting mechanism (A), make fixture structural unit (19) and shell and tightening fixture structural unit (19) (16) position that can be contacted.

Description

The restored method of restraint device, the elevator for having restraint device and restraint device
Technical field
The present invention relates to the recoveries of constraint (tie down) device, the elevator and restraint device that have the restraint device Method.
Background technique
There are following situations in elevator: hanging in order to compensate for generate in the lifting of lift car and balance weight, master The deviation of the weight of the lift car side and balance heavy side of rope, the compensation of the lower part and balance weight that have connection lift car are hung Rope.Compensation belt wheel and restraint device are equipped in such elevator, the compensation belt wheel is for guiding compensation hoist cable and giving to it Tension, to avoid in lift car and balance weight lifting compensation hoist cable tamper in liftway and touched with other components It hits, restraint device limitation compensation belt wheel takeoffs, to avoid following situation: when elevator emergency stops, because of the deceleration of moment It spends and balance weight is made to fly up, main hoist cable is thus made to be detached from the rope sheave of hoist engine;Or make to compensate band because of the pull-up of compensation hoist cable Wheel takeoffs.In addition, elevator emergency stop and after restraint device acted, in the case where confirming after safety, need by Maintenance personnel restores restraint device.As the fixture for restoring restraint device, it is known to such as 1 (Japanese Unexamined Patent Publication of patent document 2000-118913)。
Following content is recorded in patent document 1: " being dashed forward respectively relative in the lower section for the multiple wedges being set in body frame It is provided with wedge-shaped high-strength bolt and via these wedge-shaped high-strength bolts that the wedge is elastic force-applying multiple downward out By the restraint device of the elevator of pressing spring, be configured to have pressing bolt and supporting member, the pressing bolt has in upper end It is able to use the clamping mechanism engaged in the wedge release clip for discharging the wedge with the lower end of the wedge-shaped high-strength bolt, it should Supporting member is using union body the lower part of the pressing bolt will to be kept to screw togather body and be mounted in the body frame to screw togather state On top bearing member link ".
Citation
Patent document 1: Japanese Unexamined Patent Publication 2000-118913 bulletin
It is that can move along the vertical direction, and be located at and mend that restraint device documented by patent document 1, which is bound rail guidance, Repay the top of belt wheel.In addition, in general, compensation belt wheel rotatably supported by compensation belt wheel frame, compensation belt wheel frame be equipped with to The guide rod that top extends, the guide rod (bar) run through restraint device.In addition, in such restraint device, in restraint device Shell and compensation belt wheel frame between be equipped with the buffer spring (constraint spring) for being guided stick guidance, by make to compensate belt wheel frame with The distance of restraint device is close and is compressed.
But in the case that restraint device is acted in the state that elevator emergency stops, compensation hoist cable is pulled up, when When maintenance personnel is using the fixture for restoring restraint device documented by patent document 1, the elastic force that buffer spring is accumulated is released It puts, restraint device takeoffs and causes larger danger to maintenance personnel.Thus, restraint device in the state of compensating hoist cable and being pulled up In the case where being acted, it has on one side inhibited using chain block, jack restraint device make while takeofing constraint fill Set recovery, to avoid in the comeback job of restraint device restraint device takeoff, to expend more workload.
Summary of the invention
The present invention uses such as flowering structure in order to solve the above problems,
Restraint device has: shell;First bar is set to compensation belt wheel frame and runs through the shell, the compensation belt wheel Frame rotatably supports the compensation belt wheel of guidance compensation hoist cable, which is connected between lift car and balance weight And the deviation of the weight of the main hoist cable of compensation;Buffer spring is guided by first bar, and in the shell and the compensation band It takes turns and stretches between frame;And limiting mechanism, elevator emergency stop and the shell by power upward when, will be described Shell limits and is constrained in the guide portion of the constraint guide rail of the movement for the up and down direction for guiding the shell, which is characterized in that institute Stating shell has the through hole penetrated through for first bar, and first bar has the first thread, the constraint dress in periphery Set and be also equipped with fixture structural unit, first thread of the fixture structural unit and first bar screws togather, and clip the shell and It configures in the side opposite with the compensation belt wheel frame, the fixture structural unit is made as axis using first bar in horizontal profile In the case where rotation, at least there is region that will not be Chong Die with the through hole under arbitrarily rotation angle in a part, First thread is set to following position, that is, is constrained in the constraint guide rail by the limiting mechanism in the shell The guide portion in the case where, the fixture structural unit can be made to contact with the shell and tightening the fixture structural unit.
Invention effect
According to the present invention, without that safely restraint device can be made to restore using biggish utensil as previous.
Detailed description of the invention
Fig. 1 is the brief configuration figure using elevator of the invention.
Fig. 2 is the main view of the connection relationship of the restraint device and surrounding member when illustrating usual operating of the invention.
Fig. 3 is the main view of the connection relationship of the restraint device and surrounding member when illustrating emergent stopping of the invention.
Fig. 4 is the main view for illustrating to prevent the state of restraint device takeoff when the restrained condition of restraint device releases.
Fig. 5 is the side view of the limiting mechanism for illustrating restraint device and the structure of releasing mechanism.
Fig. 6 is the side view for indicating to relieve the state of the restrained condition based on limiting mechanism using releasing mechanism
Description of symbols:
6 compensation hoist cables
7 compensation belt wheels
8 restraint devices
13 compensation belt wheel frames
15 constraint guide rails
15a guide portion
16 shells
The top 16a
In the middle part of 16b
The lower part 16c
17 first bars
The first thread of 17a
19 fixture structural units
20 through holes
A limiting mechanism
B releasing mechanism
Specific embodiment
Hereinafter, being illustrated using attached drawing to embodiment.
[embodiment]
Fig. 1 shows the summaries for the elevator for being equipped with restraint device.Elevator of the invention has: utilizing the cunning for being wound in hoist engine It takes turns the main hoist cable 3 of 1 and deflector sheave 2 and suspends the lift car 4 and balance weight 5 for hanging like in midair;With lift car 4 and flat Weight 5 links and compensates the compensation hoist cable 6 of the deviation of the weight of main hoist cable 3;Guidance compensation hoist cable 6 and the compensation band for giving tension Wheel 7;To give tension to compensation hoist cable 6 in usual operating, in emergent stopping when do not make to compensate in a manner of belt wheel 7 takeoffs and 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 compartment 4 when being more than specified value 10;And it is tight with balance weight that balance weight 5 is synchronously constrained in counter-weight guide rails 11 by the movement of lift car emergency braking 10 Anxious brake apparatus 12.It should be noted that compensation belt wheel frame 13 is omitted in Fig. 1.
Fig. 2 indicates the connection relationship of restraint device and peripheral device when usually operating.Restraint device 8 is located at constraint dress It sets 8 top and the self weight holding unit 14 of the self weight of restraint device 8 is supported to be held in the guide portion 15a for fettering guide rail 15.
Here, the self weight holding unit 14 in the present embodiment includes: in a manner of clamping guide portion 15a arranged opposite two A retainer body 14a;Configure the friction boots 14b in the face opposed with the guide portion 15a of retainer body 14a;One end is with a side's Retainer body 14a connection and through another party retainer body 14a and the other end have spring-loaded portion it is (not shown) Guide rod;The holding for configuring between the retainer body 14a and spring-loaded portion of another party and being guided by guide rod (not shown) Spring 14c.Thus, in the case that the power more than the self weight of restraint device 8 applies to self weight holding unit 14, self weight keeps single Member 14 moves up and down along guide portion 15a together with restraint device 8.In addition, compensation belt wheel 7 (not shown) rotatably freely supports In compensation belt wheel frame 13.
In addition, restraint device 8 includes: the shell 16 being made of top 16a, middle part 16b, lower part 16c;Set on compensation belt wheel Frame 13 and upwards extension simultaneously have the first bar 17 of the first thread 17a through restraint device and in periphery;Through shell 16 Lower part 16c and compensation belt wheel frame 13 top and shell 16 top 16a between stretch buffer spring 18;And with The fixture structural unit 19 in outside that one bar 17 is screwed togather and configured in shell 16.In addition to this, it is equipped with and is used in the top 16a of shell 16 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 as axis 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 axis In the case where rotation, even if at least there is area that will not be Chong Die with through hole 20 under arbitrarily rotation angle in a part Domain.
In addition, shell 16 is constrained when shell 16 is by power upward being equipped on the shell 16 of restraint device 8 In the limiting mechanism A (saving the record slightly towards Fig. 2) of the guide portion 15a of constraint guide rail 15.It should be noted that limiting mechanism A Specific structure see below.
Next, the movement of restraint device when stopping for the elevator emergency for having the above restraint device constituted like that It is illustrated.
For example, balance weight 5 is inertially when lift car emergency braking apparatus 10 is acted in the decline of lift car 4 It takeoffs, 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 power of the shell 16 of restraint device 8 by upper direction via buffer spring 18.Due to being set on the shell 16 of restraint device 8 There is the limiting mechanism A acted when upward by power, therefore shell 16 is constrained in by constraint guide rail by limiting mechanism A 15 guide portion 15a.
Here, compensation belt wheel 7 obtains the kinetic energy of ascent direction by 6 pull-up of compensation hoist cable and continues to rise, but fetter dress It sets 8 to be bound after the constraint of guide rail 15, continues the compensation belt wheel 7 risen and compress buffer spring 18 and be absorbed kinetic energy, and It is hindered the elastic force of rising from buffer spring 18, therefore makes its stopping.Thus, restraint device 8 can limit compensation hoist cable 6 with And compensation belt wheel 7 takeoffs (rising).
It should be noted that can also be by the way that there is gap between buffer spring 18 and shell 16 in usual operating Mode configures buffer spring 18, so that limiting mechanism A is delayed work to avoid because of earthquake etc..
The connection relationship of restraint device and surrounding member when Fig. 3 expression 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, to not fall out.Thus, compensation hoist cable 6, which becomes, to be drawn The state risen, restraint device 8 are bound the constraint of guide rail 15, therefore in emergent stopping, between shell 16 and compensation belt wheel frame 13 Buffer spring 13 become compressed state, become the springy state of accumulation.
In addition, enumerating the buffering of balance weight 5 with the lower part for being set to liftway as other examples that elevator emergency stops The case where device (not shown) collides.In this case, the driving device of elevator stops, but until lift car is promptly made During dynamic device 10 is acted, increase lift car 4, therefore compensate hoist cable 6 to become the state being pulled up, Buffer spring 13 between shell 16 and compensation belt wheel frame 13 becomes compressed state, becomes the springy state of accumulation.
Next, being illustrated for the recovery for the elevator for having the restraint device constituted as in the present invention.
After emergent stopping, when confirming safe, need to release lift car emergency braking apparatus 10, balance weight is promptly made Dynamic device 12, restraint device 8 limiting mechanism A 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 constraint relief state upwards, but since restraint device 8 limits It rises, therefore, it is necessary first to the restrained condition of the mechanism that lifts restrictions A.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 indicates the state takeoff that restraint device is prevented when the restrained condition of restraint device releases.
As shown in figure 4, by be set to the first bar 17 the first thread 17a be set as, until by by fixture structural unit 19 to The lower position that rotates (fastening) and can be contacted with the top 16a of shell 16.By connecing fixture structural unit 19 with shell 16 Touching can make to compensate the elastic force between belt wheel frame 13 and fixture structural unit 19 with buffer spring 18.It in the present specification, will be locking Component is tightened and the process contacted with shell 16 is defined as Contact operation.
Even if the restrained condition of the mechanism that lifts restrictions as a result, A, since 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 the present specification, 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 (loosening), buffering elastic can be gently discharged The elastic force of spring 18.Here, in the present specification, 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.
The limiting mechanism of Fig. 5 expression restraint device.Limiting mechanism A includes: the middle part 16b set on shell 16 and clips constraint The guide portion 15a of guide rail 15 is opposed and in the acclivitous inclined surface 21 in side upward far from guide portion 15a;And configuration Wedge 22 (friction fastened component) between inclined surface 21 and guide portion 15a.
Through this structure, when shell 16 upward by power when, shell 16 is moved upward, and wedge 22 is relative to shell Body 16 relatively moves downward.Here, be set to shell 16 inclined surface 21 become with downward and close to constraint guide rail The inclination of 15 guide portion 15a, therefore pressed wedge 22 to guide portion 15a by inclined surface 21, wedge 22 becomes with guide portion 15a Rub fastening state.As described above, restraint device 8 becomes the state for being bound the constraint of guide rail 15.
In addition, restraint device 8 has the releasing mechanism B for releasing the restrained condition based on limiting mechanism A.Releasing mechanism B packet It includes: set on the notch 24 of the top 16a of shell 16;Its top for being set to wedge 22 of second bar 23 and extend upwards and from notch 24 It is prominent towards the outside of shell 16, and the second thread 23a is equipped in periphery;And rotating member 25, with the second thread 23a In the case where screwing togather, and rotate it with the second bar 23 in horizontal profile for axis, at least have in a part arbitrary Rotate region that will not be Chong Die with notch 24 in angle.In the present embodiment, rotating member 25 is set as nut, but can also be with It is collar.
Through this structure, rotating member 25 is tightened downward in the state that wedge 22 is constrained in guide portion 15a, by This is contacted with the top 16a of shell 16, is further tightened, and moves wedge 22 relatively upward thus relative to shell 16, base In being released wedge 22 towards the power that guide portion 15a is pressed of the inclined surface of shell 16 21, between wedge 22 and guide portion 15a Friction fastening state is released from.Thus, it is possible to release the restrained condition based on limiting mechanism A using releasing mechanism B (referring to figure 6)。
In the case where such releasing mechanism B, in release process, by the elastic force of buffer spring 18 make shell 16 by To power upward, but due to can not relatively be moved downward relative to shell 16 under the action of nut 25 using wedge 22 Structure, therefore will not using inclined surface 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, restraint device according to the present invention, without using chain block, jack as previous, Safely restraint device can be made to restore.
It should be noted that the invention is not restricted to the embodiments described, including various modifications example.In the above embodiments, Illustrate the present invention in order to facilitate understanding and be described in detail, but is not limited to the entire infrastructure for having illustrated.

Claims (6)

1. a kind of restraint device, has:
Shell;
First bar is set to compensation belt wheel frame and runs through the shell, and the compensation belt wheel frame will guide the compensation of compensation hoist cable Belt wheel rotatably supports, and the compensation hoist cable is connected to the weight between lift car and balance weight and compensating main hoist cable Deviation;
Buffer spring is guided by first bar, and is stretched between the shell and the compensation belt wheel frame;And
Limiting mechanism, elevator emergency stop and the shell by power upward when, the shell is limited and about Beam in the guide portion of the constraint guide rail of the movement for the up and down direction for guiding the shell,
It is characterized in that,
The shell has the through hole for first bar perforation,
First bar has the first thread in periphery,
The restraint device is also equipped with fixture structural unit, and first thread of the fixture structural unit and first bar screws togather, and Clip the shell and configure with the opposite side of the compensation belt wheel frame, in horizontal profile using first bar as axis and In the case where rotating the fixture structural unit, the fixture structural unit at least has under arbitrarily rotation angle also not in a part The meeting region Chong Die with the through hole,
First thread is set to following position: being constrained in the constraint guide rail by the limiting mechanism in the shell The guide portion in the case where, so that the fixture structural unit is contacted with the shell and tightening the fixture structural unit Position.
2. restraint device according to claim 1, which is characterized in that
The buffer spring is not contacted in usual operating with the shell.
3. restraint device according to claim 1, which is characterized in that
The restraint device is also equipped with releasing mechanism, which releases the limiting mechanism to the about pencil of the shell State.
4. restraint device according to claim 3, which is characterized in that
The limiting mechanism includes: set on the shell and opposed with the constraint guide portion of guide rail and to direction Top and far from the guide portion the inclined inclined surface in direction;And configuration is between the inclined surface and the guide portion Rub fastened component,
The releasing mechanism includes:
Second bar is set to the friction fastened component and extends upward, and has the second thread in periphery;
Notch is set to the shell and for prominent to the outside of the shell for second bar;And
The outside that second thread in rotating member, with second bar is screwed togather and configured in the shell, in water In the case where rotating the rotating member using second bar as axis in flat cutting faces, the rotating member is at least in a part With region that will not be Chong Die with the notch under arbitrarily rotation angle.
5. a kind of elevator, which is characterized in that
The elevator has lift car, balance weight, compensation hoist cable, compensation belt wheel, compensation belt wheel frame, constraint guide rail, Yi Jiquan Benefit require any one of 1 to 4 described in restraint device.
6. a kind of restored method of restraint device,
The restraint device has:
Shell;
First bar is set to compensation belt wheel frame and runs through the shell, and the compensation belt wheel frame will guide the compensation of compensation hoist cable Belt wheel rotatably supports, and the compensation hoist cable is connected to the weight between lift car and balance weight and compensating main hoist cable Deviation;
Buffer spring is guided by first bar, and is stretched between the shell and the compensation belt wheel frame;And
Limiting mechanism, elevator emergency stop and the shell by power upward when, the shell is limited and about Beam in the guide portion of the constraint guide rail of the movement for the up and down direction for guiding the shell,
It is 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 shell and the opposite side of the compensation belt wheel frame and the fixture structural unit of the first bar screw threads for fastening be screwed to The shell contact;
It releases process and in the releasing process, releases the restrained condition of the limiting mechanism after the Contact operation; And
Release process in the release process, unscrews the fixture structural unit after the releasing process.
CN201610920096.2A 2016-01-22 2016-10-21 The restored method of restraint device, the elevator for having restraint device and restraint device Active CN106995173B (en)

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 CN106995173A (en) 2017-08-01
CN106995173B true 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)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
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
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

Citations (6)

* Cited by examiner, † Cited by third party
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
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
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 A kind of joint meter damp type pretension fixing device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015015632A1 (en) * 2013-08-02 2015-02-05 株式会社日立製作所 Elevator device
CN105873845B (en) * 2014-02-13 2018-04-03 株式会社日立制作所 Clamp down on device
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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
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
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 A kind of joint meter damp type pretension fixing device

Also Published As

Publication number Publication date
JP2017128430A (en) 2017-07-27
JP6476142B2 (en) 2019-02-27
CN106995173A (en) 2017-08-01

Similar Documents

Publication Publication Date Title
CN102602772B (en) Anti-falling brake-buffer system for mining express elevator
CN102862893B (en) Lifting plier device of elevator car
EP2487128A1 (en) Tension pulley device for elevator
DE112014000308T5 (en) Special crash-safety buffer for a lift with flexible guidance
CN106430025B (en) A kind of disconnected rope type safety lock
CN105858399B (en) Safety tongs and device for preventing elevator from falling
CN106995173B (en) The restored method of restraint device, the elevator for having restraint device and restraint device
CN109693987B (en) Bidirectional safety brake device for elevator
CN204873338U (en) Prevent unexpected two -way rope ware device that presss from both sides that removes of elevator car
CN202729512U (en) Large-tonnage progressive elevator safety tongs
CN202379552U (en) Elevator safety protection device
CN110482094A (en) Loading platform and its method with novel anti-falling mechanism
CN105731211B (en) The disconnected rope safety guard of high rise elevator and method
US10807832B2 (en) Elevator device
CN105873845A (en) Tie-down device
CN201209078Y (en) Antislipping device for friction lifter
CN203212157U (en) Vibration damper for traction machine
CN205906858U (en) Anti -falling device for elevator
CN208790977U (en) A kind of automatic safety device when multi-rope friction hoisting machine pulleying, over-discharge
CN112794233A (en) Oblique transportation safety device
CN109132562A (en) A kind of explosion-proof piler arrestment mechanism and its braking method
CN205076744U (en) Elevator brake device
CN106794961B (en) Governor and lift appliance
CN203568634U (en) Steel wire rope tightening device for elevator speed governor
CN210340009U (en) Speed limiter steel wire rope limiting device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant