CN101531311A - Elevator system and main horseline break detection device thereof - Google Patents
Elevator system and main horseline break detection device thereof Download PDFInfo
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- CN101531311A CN101531311A CN200910118065A CN200910118065A CN101531311A CN 101531311 A CN101531311 A CN 101531311A CN 200910118065 A CN200910118065 A CN 200910118065A CN 200910118065 A CN200910118065 A CN 200910118065A CN 101531311 A CN101531311 A CN 101531311A
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Abstract
Provided is an elevator system, capable of detecting an abnormity of a main horseline of the elevator rapidly so as to ensure the safety of the elevator system, and a main horseline break detection device for the same. According to the present invention, the elevator system includes an elevator car; a balance counterweight linked with the car through the main horseline; and a tractor for drawing the main horseline. The tractor is connected with a control device for controlling the tractor; the control device is connected with a remote monitoring device. in addition, the control device is connected with a main horseline break detection device for detecting the abnormity of the main horseline. The main horseline break detection device contains a detection unit and a means unit, the detection unit having a annular part penetrated by the main horseline freely and a support part for supporting the annular part; the means unit having a fixed side contact and a movable side contact, the movable side contact opposites to the fixed side contact, and the support part is held between the movable side contact and the movable side contact freely by press.
Description
Technical field
The present invention relates to detect the unusual elevator device of main horseline of elevator and the main horseline break detection device of elevator device, guarantee the elevator device of safety of elevator device and the main horseline break detection device of elevator device thereby relate in particular to detect main horseline rapidly unusual.
Background technology
In the past, the elevator device of known bucket type, this elevator device comprises: lifting is arranged on the interior car of elevating road of elevator freely, via main horseline and this car link, with the car balance weight of lifting and the towing machine that main horseline carried out traction via rope sheave in elevating road accordingly.Wherein, main horseline be constitute at the steel core that constitutes by steel rope or by textile rope fibre core around the wire harness that constitutes by wire rod of twisted and constituting, be suspended on the counterweight pulley of the car pulley of rope sheave, car of towing machine and balance weight.Therefore, be accompanied by the car lifting, the main horseline alternating bending in addition, is rubbed from the rope sheave of towing machine, the car pulley of car and the counterweight pulley of balance weight.Thus, along with using a year number process, main horseline intensity slowly descends.
Therefore, carry out maintenance examination for the intensity of confirming main horseline.In this maintenance examination, general inspection is as the generation state (JIS A 4302) of the broken string number of the wire rod of the main horseline of the management project of JIS regulation, abrasion size, hoist ropes diameter, rust.Then, based on this check result, confirm the remaining intensity or the residual life of main horseline.
Yet because this main horseline spreads all over the tension integrally of elevating road, the total length of main horseline is elongated.Thus, in the scope of limited maintenance examination time, what be difficult to spread all over main horseline carries out high-precision inspection endlong.
In order to solve such problem, knownly in main horseline, produce D.C. magnetic field, confirm the magnetic fault detector (for example, with reference to patent documentation 1) of the leakage magnetic flux the mode whether part of main horseline is damaged by magnetizers such as permanent magnets.Use this magnetic fault detector, when the main horseline that produces damage to a part adds D.C. magnetic field, detect from the part of this damage magnetic flux by the Magnetic Sensor that constitutes by coil or magnetostriction element, can confirm that thus the part of main horseline produces damage to the main horseline external leaks.
Patent documentation 1: the spy opens the 2005-162379 communique
In addition, in general, when main horseline under common environment for use when using benchmark suitably to use, the intensity of main horseline can not descend sharp owing to be subjected to mechanical fatigue or wearing and tearing etc., intensity slowly descends.Thereby in above-mentioned maintenance examination, arrive when changing benchmark, change this main horseline in the strength degradation that is judged as main horseline.This replacing benchmark is set to full intensity, even when the intensity of main horseline arrives the replacing benchmark, also can guarantee the safety of elevator device.Therefore, in general, the intensity of main horseline is guaranteed fully that always the safety of elevator device is guaranteed.
But when bad sustaining damage was installed, when perhaps main horseline was subjected to corroding owing to use under corrosive environment, if the tension force of inappropriate adjustment main horseline, then load was concentrated on the part of main horseline at main horseline.At this moment, it is contemplated that: the strength degradation of main horseline is sharply carried out, and the part broken string of the wire rod of the wire harness of formation main horseline is placed like this up to the maintenance examination of carrying out next time.At this moment, also it is contemplated that following problems: the broken string of this wire rod part contacts with other equipment in being arranged at elevating road, makes this equipment breakage.
Summary of the invention
The present invention considers this point and finishes, thus its purpose is to provide a kind of main horseline that can detect elevator rapidly the elevator device of the unusual safety of guaranteeing elevator device and the main horseline break detection device of elevator device.
The present invention is an elevator device, it is characterized in that, comprising: car, its lifting are arranged in the elevating road of elevator freely; Balance weight, it links via main horseline and this car, with car lifting in elevating road accordingly; Towing machine, it carries out traction via rope sheave to main horseline; Control setup, it is connected with this towing machine, the control towing machine; Long-Range Surveillance Unit, it is connected with this control setup, the state of telemonitoring elevator; With at least one main horseline break detection device, it is connected with control setup, detects the unusual of main horseline; Wherein, main horseline break detection device comprises detecting unit and apparatus body, and this detecting unit comprises the support portion that main horseline connects annulus freely and supports this annulus; This apparatus body comprises fixed side contact and movable side contact, and this movable side contact and this fixed side contact relatively are provided with, and pushes clamping support portion freely between itself and fixed side contact.
The present invention is a kind of elevator device, it is characterized in that: on the movable side contact of apparatus body, linking has the unit of pushing of pushing movable side contact with respect to fixed side contact.
The present invention is a kind of elevator device, it is characterized in that: the movable side contact of apparatus body is made of elastomeric material.
The present invention is a kind of elevator device, it is characterized in that: the annulus of detecting unit has than the external diameter of main horseline larger about 10% internal diameter.
The present invention is a kind of elevator device, it is characterized in that: detecting unit is made of resin material.
The present invention is a kind of elevator device, it is characterized in that: car has the car pulley that is hung with main horseline, and balance weight has the counterweight pulley that is hung with main horseline; Main horseline break detection device is configured at least one position near near near counterweight pulley of and balance weight of car pulley of, car of rope sheave of towing machine.
The present invention is a kind of elevator device, it is characterized in that: when main horseline break detection device detected main horseline unusual, control setup stopped car based on the abnormal signal control towing machine from main horseline break detection device.
The present invention is a kind of elevator device, it is characterized in that: when main horseline break detection device detects main horseline unusual, control setup is based on from the abnormal signal of main horseline break detection device control towing machine, makes car be parked in nearest floor and car is stopped.
The present invention is a kind of elevator device, it is characterized in that: when main horseline break detection device detects main horseline unusual, control setup sends the abnormal signal of main horseline based on the abnormal signal from main horseline break detection device to Long-Range Surveillance Unit.
The present invention is a kind of elevator device, it is characterized in that: Long-Range Surveillance Unit has display unit, when this display unit receives the abnormal signal of main horseline at Long-Range Surveillance Unit, at least a information in the specification information that place information and this main horseline are set of the unusual elevator device of demonstration generation main horseline.
The present invention is a kind of main horseline break detection device of elevator device, the main horseline break detection device of this elevator device detects the unusual of main horseline, the interior lifting of elevating road car and the balance weight freely that this main horseline will be provided in elevator links, it is characterized in that, comprise: detecting unit, it comprises the support portion that main horseline connects annulus freely and supports this annulus; And apparatus body, it comprises fixed side contact and movable side contact, and this movable side contact and this fixed side contact relatively are provided with, and push clamping support portion freely between itself and fixed side contact.
According to the present invention, when thereby the main horseline of elevator produces the part broken string of unusual main horseline, the part of this broken string is outstanding laterally from the periphery of main horseline, is hooked on the annulus of detecting unit of the main horseline break detection device that is through with main horseline.At this moment, be accompanied by main horseline is carried out traction, also this detecting unit is carried out traction, the support portion of detecting unit breaks away between the fixed side contact of apparatus body and movable side contact.Thus, movable side contact is pressed towards fixed side contact, and movable side contact contacts with fixed side contact, can detect to have produced on main horseline unusually.Therefore, can promptly detect the unusual of main horseline, guarantee the safety of elevator device reliably.
Description of drawings
Fig. 1 is the figure of the main horseline break detection device in the expression embodiments of the present invention.
Fig. 2 is the figure that expression is configured in the main horseline break detection device in the embodiments of the present invention state on a plurality of main horselines.
Fig. 3 is the figure of state that expression is configured in the main horseline break detection device in the embodiments of the present invention at a plurality of positions of elevator device.
Fig. 4 is that expression is connected in the control setup of the main horseline break detection device in the embodiments of the present invention and the figure of Long-Range Surveillance Unit.
Fig. 5 is the integrally-built figure of expression elevator device.
The specific embodiment
The working of an invention mode
Below, with reference to accompanying drawing, embodiments of the present invention are described.Here, Fig. 1 to Fig. 5 is the figure of the elevator device in representing according to the embodiment of the present invention.Wherein, Fig. 1 is the figure of the main horseline break detection device in the expression embodiments of the present invention, Fig. 2 is that expression is configured in the figure of the state on a plurality of main horselines with the main horseline break detection device in the embodiments of the present invention, and Fig. 3 is the figure of the state at expression a plurality of positions of the main horseline break detection device in the embodiments of the present invention being configured in elevator device.In addition, Fig. 4 is that expression is connected in the control setup of the main horseline break detection device in the embodiments of the present invention and the figure of Long-Range Surveillance Unit, and Fig. 5 is the integrally-built figure of expression elevator device.
At first, by Fig. 5 the integral structure of elevator device 8 is described.As shown in Figure 5, elevator device 8 comprises: lifting is arranged on the car 2 in the elevating road 7 of elevator freely, via main horseline 4 and this car 2 link, with the balance weight 3 of car 2 lifting in elevating road 7 accordingly and the towing machine 1 that main horseline 4 is carried out traction via rope sheave 1a.Wherein, car 2 has the car pulley 5 that is hung with main horseline 4, and balance weight 3 has the counterweight pulley 6 that is hung with main horseline 4.In addition, main horseline 4 the steel core that constitutes by steel rope (not shown) or by textile rope constitute fibre core (not shown) around twisted constitute by a plurality of wire harness 4a that wire rod 4b constitutes.
In addition, as shown in Figure 4, on towing machine 1, be connected with the control setup 15 of control towing machine 1.On this control setup 15, be connected with telemonitoring elevator device 8 state, have the Long-Range Surveillance Unit 16 of display unit 16a, this display unit 16a shows the place information that is provided with of the unusual elevator that produces main horseline 4 and the specification information of this main horseline 4 when producing the abnormal signal of main horseline 4.
Next, for the main horseline break detection device 14 of elevator device 8 according to the present invention, use Fig. 1 to describe.Here, main horseline break detection device 14 is used to detect the unusual of main horseline 4.
As shown in Figure 1, main horseline break detection device 14 comprises detecting unit 10 and apparatus body 18, this detecting unit 10 comprises the support portion 10b that main horseline 4 connects annulus 10a freely and supports this annulus 10a, this apparatus body 18 comprises fixed side contact 11a and movable side contact 11b, this movable side contact 11b and this fixed side contact 11a relatively are provided with, and push clamping support portion 10b freely between itself and fixed side contact 11a.In addition, the support portion 10b of detecting unit 10 is clamped between fixed side contact 11a and the movable side contact 11b.That is, apparatus body 18 has framework 18a, and fixed side contact 11a and movable side contact 11b are kept by this framework 18a.In addition, fixed side contact 11a is formed by mutual conductive material with movable side contact 11b.
In addition, between the framework 18a and movable side contact 11b of apparatus body 18, linking has the spring (pushing the unit) 12 of pushing movable side contact 11b with respect to fixed side contact 11a.
In addition, the annulus 10a of detecting unit 10 has than the external diameter (nominal diameter) of main horseline 4 larger about 10% internal diameter.
In addition, detecting unit 10 is made of resin material.Thus, the support portion 10b of detecting unit 10 is between fixed side contact 10a that is held in apparatus body 18 and movable side contact 10b the time, can fixed side contact 10a with movably insulate between the 10b of side contact.
In addition, on fixed side contact 11a and movable side contact 11b, be connected with lead-out terminal 13, on this lead-out terminal 13, be connected with control setup 15.
But main horseline 4 spreads all over its total length and is set side by side with many, is provided with main horseline break detection device 14 with respect to each main horseline 4.At this moment, as shown in Figure 2, the detecting unit 10 of a main horseline break detection device 14 is configured to misplace on the axis direction of main horseline 4 with respect to the detecting unit 10 of other adjacent main horseline detecting devices 14, thereby is installed on each main horseline 4.Thus, can shorten the distance between each main horseline 4, reduce main horseline 4 single-pieces the space is set.In addition, by on each main horseline 4, main horseline break detection device 14 being set like this, can detect reliably each main horseline 4 produce unusual, at each main horseline 4, because the degree difference of suffered damage during the different or installation of the tension force of each main horseline 4, the possibility of unusual generation is also different.
In addition, as shown in Figure 3, main horseline break detection device 14 is configured near near near each position (with reference to Fig. 2) of counterweight pulley 6 of and balance weight 3 of car pulley 5 of, car 2 of the rope sheave 1a of towing machine 1 as mentioned above with respect to the many main horselines 4 that are set up in parallel.Thus, can promptly detect the car pulley 5 of rope sheave 1 at the higher towing machine 1 of the unusual possibility that produces main horseline 4, car 2 and balance weight 3 counterweight pulley 6 near main horseline 4 unusual of generation.
Next, the effect to the present embodiment that is made of such structure describes.
At first, as Fig. 1 and shown in Figure 3, when on main horseline 4, not producing when unusual, main horseline 4 connect main horseline break detection devices 14 detecting unit 10 annulus 10a and by towing machine 1 traction, car 2 is moved usually.At this moment, constitute the wire rod 4b broken string not of the wire harness 4a of main horseline 4, larger about 10%, main horseline 4 can not be hooked on the annulus 10a of detecting unit 10 internal diameter of the annulus 10a of detecting unit 10 than the external diameter of main horseline 4.
But, during car 2 is moved usually in, it is contemplated that for a certain reason, the wire rod 4b of the wire harness 4a of main horseline 4 broken string, outstanding laterally from the periphery of main horseline 4.At this moment, at first, be accompanied by main horseline 4 by towing machine 1 traction, the broken string of its wire rod partly moves.Next, this disconnection portion is divided any place near near near counterweight pulley 6 of and balance weight 3 of car pulley 5 of, car 2 of the rope sheave 1a that arrives towing machine 1, is hooked on the annulus 10a of detecting unit 10.Next, if under this state, further main horseline 4 is carried out traction, annulus 10a be hooked in detecting unit 10 on this broken string part with main horseline 4 by traction.Meanwhile, the support portion 10b of detecting unit 10 breaks away between the fixed side contact 10a of apparatus body 18 and movable side contact 10b.
Next, movable side contact 10b is pushed to fixed side contact 10a by spring, and movable side contact 10b contacts with fixed side contact 10a, detects to have produced on main horseline 4 unusually.At this moment, fixed side contact 10a sends to control setup 15 via lead-out terminal 13 with movable side contact 10b conducting, abnormal signal.
Next, by control setup 15, based on the abnormal signal from main horseline break detection device 14, control towing machine 1 stops car 2.In addition, at this moment, control setup 15 also can be by producing the special operational mode control towing machine 1 when unusual on main horseline 4.
Control towing machine 1 stops car 2, simultaneously by control setup 15, based on the abnormal signal from main horseline break detection device 14, sends the abnormal signal of main horseline 4 to Long-Range Surveillance Unit 16.
Next, by the display unit 16a of Long-Range Surveillance Unit 16, show the place information that is provided with of the unusual elevator that produces main horseline 4 and the specification information of this main horseline 4 (rope length, rope footpath, rope material etc.).Thus, behind the broken string of the wire rod 4b of the wire harness 4a that detects main horseline 4,, can promptly report to have produced the unusual of main horseline 4 and take the recovery activity at the servicing center that is provided with Long-Range Surveillance Unit 16.Therefore, main horseline 4 can be promptly changed, the time that the operation of the car 2 of elevator stops can be to shorten.
As mentioned above, according to present embodiment, when the wire rod 4b broken string of the wire harness 4a of the main horseline 4 of elevator, the broken string of this wire rod 4b part is outstanding laterally from the periphery of main horseline 4, and the broken string of this wire rod 4b partly is hooked on the annulus 10a of detecting unit 10 of the main horseline break detection device 14 that is through with main horseline 4.At this moment, be accompanied by main horseline 4 is carried out traction, also this detecting unit 10 is carried out traction, the support portion 10b of detecting unit 10 breaks away between the fixed side contact 11a of apparatus body 18 and movable side contact 11b.Thus, movable side contact 11b is pressed towards fixed side contact 11a, and movable side contact 11b contacts with fixed side contact 11a, can detect to have produced on main horseline 4 unusually.Therefore, can promptly detect the unusual of main horseline 4, guarantee the safety of elevator device 8 reliably.
In addition, according to present embodiment, as mentioned above, when the annulus 10a of the detecting unit 10 of main horseline break detection device 14 is hooked on the broken string part of this wire rod, be accompanied by moving of main horseline 4, the support portion 10b of detecting unit 10 from the fixed side contact 11a of apparatus body 18 with movably break away between the 11b of side contact.Can prevent from the apparatus body 18 of main horseline detecting device 14, to apply excessive power.
In addition, according to present embodiment, it is contemplated that: annulus 10a be hooked in detecting unit 10 on the broken string part of wire rod with main horseline 4 by traction, this detecting unit 10 is involved near, the car pulley 5 of car 2 of rope sheave 1a of towing machine 1 or the counterweight pulley 6 of balance weight 3.But as mentioned above, detecting unit 10 is made of resin material, so can prevent the damage of near, car pulley 5 and the counterweight pulley 6 of rope sheave 1a.In addition, can suppress main horseline 4 damages that contacted with adjacent main horseline 4 by the detecting unit 10 of traction and produce noise and make contact with main horseline 4.
In addition, in the present embodiment, as mentioned above, on the movable side contact 11b of apparatus body 18, linking has the spring (pushing the unit) 12 of pushing movable side contact 11b with respect to fixed side contact 11a.But, be not limited in binding spring 12 on movable side contact 11b, for example also can not use spring 12, and use the movable side contact 11b that constitutes by elastomeric material.
In addition, in the present embodiment, as mentioned above, when main horseline break detection device 14 detected main horseline 4 unusual, control setup 15 stopped car 2 based on the abnormal signal control towing machine 1 from main horseline break detection device 14.But, being not limited thereto, control setup 15 also can be based on from the abnormal signal of main horseline break detection device 14 control towing machine 1, makes car 2 be parked in nearest floor and car 2 is stopped.Thus, can when detecting main horseline 4 unusual, make the user who rides in the elevator in the car 2 descend elevator rapidly, guarantee user's safety.
Claims (11)
1. an elevator device is characterized in that, comprising:
Car, its lifting are arranged in the elevating road of elevator freely;
Balance weight, it links via main horseline and this car, with car lifting in elevating road accordingly;
Towing machine, it carries out traction via rope sheave to main horseline;
Control setup, it is connected with this towing machine, the control towing machine;
Long-Range Surveillance Unit, it is connected with this control setup, the state of telemonitoring elevator; With
At least one main horseline break detection device, it is connected with control setup, detects the unusual of main horseline;
Wherein, main horseline break detection device comprises detecting unit and apparatus body, and this detecting unit comprises the support portion that main horseline connects annulus freely and supports this annulus; This apparatus body comprises fixed side contact and movable side contact, and this movable side contact and this fixed side contact relatively are provided with, and pushes clamping support portion freely between itself and fixed side contact.
2. elevator device as claimed in claim 1 is characterized in that: on the movable side contact of apparatus body, linking has the unit of pushing of pushing movable side contact with respect to fixed side contact.
3. elevator device as claimed in claim 1 is characterized in that: the movable side contact of apparatus body is made of elastomeric material.
4. elevator device as claimed in claim 1 is characterized in that: the annulus of detecting unit has than the external diameter of main horseline larger about 10% internal diameter.
5. elevator device as claimed in claim 1, it is characterized in that: detecting unit is made of resin material.
6. elevator device as claimed in claim 1 is characterized in that:
Car has the car pulley that is hung with main horseline, and balance weight has the counterweight pulley that is hung with main horseline;
Main horseline break detection device is configured at least one position near near near counterweight pulley of and balance weight of car pulley of, car of rope sheave of towing machine.
7. elevator device as claimed in claim 1 is characterized in that: when main horseline break detection device detected main horseline unusual, control setup stopped car based on the abnormal signal control towing machine from main horseline break detection device.
8. elevator device as claimed in claim 1, it is characterized in that: when main horseline break detection device detects main horseline unusual, control setup is based on from the abnormal signal of main horseline break detection device control towing machine, makes car be parked in nearest floor and car is stopped.
9. elevator device as claimed in claim 1, it is characterized in that: when main horseline break detection device detects main horseline unusual, control setup sends the abnormal signal of main horseline based on the abnormal signal from main horseline break detection device to Long-Range Surveillance Unit.
10. elevator device as claimed in claim 9, it is characterized in that: Long-Range Surveillance Unit has display unit, when this display unit receives the abnormal signal of main horseline at Long-Range Surveillance Unit, at least a information in the specification information that place information and this main horseline are set of the unusual elevator device of demonstration generation main horseline.
11. the main horseline break detection device of an elevator device, the main horseline break detection device of this elevator device detects the unusual of main horseline, the interior lifting of elevating road car and the balance weight freely that this main horseline will be arranged in elevator links, and it is characterized in that, comprising:
Detecting unit, it comprises the support portion that main horseline connects annulus freely and supports this annulus; With
Apparatus body, it comprises fixed side contact and movable side contact, and this movable side contact and this fixed side contact relatively are provided with, and push clamping support portion freely between itself and fixed side contact.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP064384/2008 | 2008-03-13 | ||
| JP2008064384A JP2009220911A (en) | 2008-03-13 | 2008-03-13 | Elevator system and main rope disconnection detection device of elevator system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101531311A true CN101531311A (en) | 2009-09-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910118065A Pending CN101531311A (en) | 2008-03-13 | 2009-02-27 | Elevator system and main horseline break detection device thereof |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2009220911A (en) |
| CN (1) | CN101531311A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102448864A (en) * | 2010-06-16 | 2012-05-09 | Natac株式会社 | Method for monitoring damage to wire rope for elevator and device for monitoring damage to wire rope for elevator |
| CN106966258A (en) * | 2017-05-24 | 2017-07-21 | 住友富士电梯有限公司 | A kind of elevator maintenance method |
| CN111891873A (en) * | 2020-08-05 | 2020-11-06 | 夏鹏宇 | Elevator brake assembly |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022054314A1 (en) * | 2020-09-10 | 2022-03-17 | 株式会社島津製作所 | Wire rope inspection device, wire rope inspection system, and wire rope inspection method |
| CN117023321B (en) * | 2023-10-04 | 2024-01-09 | 辛格林电梯有限公司 | Active safety monitoring control elevator with host anti-toppling structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003060752A (en) * | 2001-08-09 | 2003-02-28 | Terufumi Tsukuda | Portable telephone set with alarm buzzer |
| JP4926613B2 (en) * | 2006-08-25 | 2012-05-09 | 新明和エンジニアリング株式会社 | Lifting device and wire rope damage detection device |
-
2008
- 2008-03-13 JP JP2008064384A patent/JP2009220911A/en active Pending
-
2009
- 2009-02-27 CN CN200910118065A patent/CN101531311A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102448864A (en) * | 2010-06-16 | 2012-05-09 | Natac株式会社 | Method for monitoring damage to wire rope for elevator and device for monitoring damage to wire rope for elevator |
| CN102448864B (en) * | 2010-06-16 | 2014-07-02 | Natac株式会社 | Method for monitoring damage to wire rope for elevator and device for monitoring damage to wire rope for elevator |
| CN106966258A (en) * | 2017-05-24 | 2017-07-21 | 住友富士电梯有限公司 | A kind of elevator maintenance method |
| CN111891873A (en) * | 2020-08-05 | 2020-11-06 | 夏鹏宇 | Elevator brake assembly |
| CN111891873B (en) * | 2020-08-05 | 2022-01-25 | 鹤山扬阳智能机械装备有限公司 | Elevator brake assembly |
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| Publication number | Publication date |
|---|---|
| JP2009220911A (en) | 2009-10-01 |
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Open date: 20090916 |