CN108799373A - Detection device and elevator for the braking pad wear for detecting electromagnetic brake - Google Patents
Detection device and elevator for the braking pad wear for detecting electromagnetic brake Download PDFInfo
- Publication number
- CN108799373A CN108799373A CN201710307178.4A CN201710307178A CN108799373A CN 108799373 A CN108799373 A CN 108799373A CN 201710307178 A CN201710307178 A CN 201710307178A CN 108799373 A CN108799373 A CN 108799373A
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- Prior art keywords
- sensing unit
- detection device
- displacement sensing
- brake
- electromagnetic brake
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- 238000001514 detection method Methods 0.000 title claims abstract description 41
- 238000006073 displacement reaction Methods 0.000 claims abstract description 54
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 230000005611 electricity Effects 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
- F16D66/028—Apparatus for indicating wear using electrical detection or indication means with non-electrical sensors or signal transmission, e.g. magnetic, optical
-
- 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
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0037—Performance analysers
-
- 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
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
- B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Braking Arrangements (AREA)
Abstract
The present invention relates to a kind of detection device and elevator for detecting the braking pad wear of electromagnetic brake, this kind of low cost and detection device of braking pad wear that can detect electromagnetic brake automatically includes：Electromagnetism displacement sensing unit and sensor block；The sensor block is arranged on quiet piece；The electromagnetism displacement sensing unit is arranged on motion block, and the electromagnetism displacement sensing unit is oppositely arranged with the sensor block；The electromagnetism displacement sensing unit senses the variation of the gap between the motion block and quiet piece, and when gap changing value is more than predetermined value, the electromagnetism displacement sensing unit generates alarm signal.Brake(-holder) block state of wear is detected by using hall displacement transducer, to replace in time, avoids causing safety accident since brake force is insufficient；And be only detected in brake dead electricity, accuracy of detection is substantially increased, the accident that detection signal causes elevator to close people when also preventing elevator work occurs.
Description
Technical field
The present invention relates to a kind of detection devices for detecting the abrasion of the brake(-holder) block of electromagnetic brake.In addition, of the invention
Further relate to it is a kind of include this kind of detection device elevator.
Background technology
With the development of China's economic society, high-storey building continues to bring out, and elevator is gradually gained popularity.Elevator to
While user brings convenience, security risk is also gradually taken seriously.Elevator brake has important in elevator safety protection
Status, the live part in brake is brake(-holder) block (brake block), and the abrasion of brake(-holder) block in long-term use will cause to brake
The safety problems such as noise becomes larger, and brake force is insufficient and then causes braking distance elongated, and braking is unreliable.
In terms of elevator brake abrasion, it is generally used detection band-type brake torque and reflects brake(-holder) block state of wear indirectly, such as
It is entitled《A kind of elevator internal contracting brake torque measuring method》Involved in by detect automatically the braking distance of starting and braking state car come
Detect brake force, but the influence factor of the braking distance involved by the technical solution is more, have be easy false alarm etc. it is unfavorable because
Element.In addition, a kind of entitled《A method of realizing brake sticking force detection of motor》Involved in using directly detection on-position get down from horse
Brake force is detected up to rotation, although testing result is reliable, needs maintenance personnel scene periodic detection, the degree of automation is not
It is high and higher using this is risen.Document is more in terms of automotive brake pads abrasion detection, is generally divided to two kinds：One is in brake block
Pre-buried sensor, it is such as entitled《A kind of energy detection and pre- antiwear brake block》In it is involved；Another kind is passed using optical fiber
Sensor directly detects brake(-holder) block thickness, such as《It is a kind of to utilize optical fiber sensing monitoring brake block wear condition》Technology, but these sides
There is complex process and the higher defects of cost for method.
The information for being disclosed in the background of invention technology segment is merely intended to deepen the reason of the general background technology to the present invention
Solution, and it is known to those skilled in the art existing to be not construed as recognizing or imply that the information is constituted in any form
Technology.
Invention content
The purpose of the present invention is provided aiming at said one present in existing elevator manufacturing field or multiple problems
A kind of detection device of braking pad wear inexpensive and that electromagnetic brake can be detected automatically.
The present invention relates to a kind of detection device for detecting the braking pad wear of electromagnetic brake, the brake includes
Braked wheel, motion block, quiet piece and the brake(-holder) block that is arranged between motion block and braked wheel, between having between the motion block and quiet piece
Gap, the detection device include：Electromagnetism displacement sensing unit and sensor block；The sensor block is arranged on quiet piece；The electromagnetism
Displacement sensing unit is arranged on motion block, and the electromagnetism displacement sensing unit is oppositely arranged with the sensor block；The electricity
Magnetic displacement sensing unit senses the variation of the gap between the motion block and quiet piece, described when gap changing value is more than predetermined value
Electromagnetism displacement sensing unit generates alarm signal.
Preferably, the detection device can also include alarm signal output unit, the electromagnetism displacement sensing unit with
It is serially connected with timer unit between alarm signal output unit；The timer unit with the predetermined time cycle constantly
After receiving the alarm signal from electromagnetism displacement sensing unit, alarm signal is sent to the alarm signal output unit.
Preferably, the timer unit may include having reset switch, which incudes with the electromagnetism displacement
The signal output end of the processor of unit is electrically connected, and when processor no signal exports, which is used for the timing
Timer in device unit is resetted.
Preferably, it can be serially connected with Signal-controlled switch between the electromagnetism displacement sensing unit and timer unit, it should
Signal-controlled switch is electrically connected with the brake signal of electromagnetic brake or standby signal input terminal, when the electromagnetic brake works
When, which disconnects.
Preferably, the electromagnetism displacement sensing unit can export linear, non-linear or phase step type signal.
Preferably, the electromagnetism displacement sensing unit can be arranged by first support on the motion block；The induction
Block can be arranged by second support on quiet piece.
Preferably, the electromagnetism displacement sensing unit may include hall sensing unit.
Preferably, the sensor block may include iron or magnet.
It is highly preferred that the hall sensing unit may include hall displacement transducer and/or alarm signal output
Unit may include alarm lamp or alarming horn.
The invention further relates to a kind of elevator, which includes the brake(-holder) block mill recited above for detecting electromagnetic brake
The detection device of damage.
The present invention takes above technical scheme, there is following advantageous effect：
It is avoided due to brake force by using hall displacement transducer detection brake(-holder) block state of wear to replace in time
It is insufficient and cause safety accident；And be only detected in brake dead electricity, accuracy of detection is substantially increased, elevator is also prevented
The accident that signal causes elevator to close people is detected when work to occur；
By timer confirmation signal validity can filter live shock and vibration, temperature fluctuation, brake remanent magnetism etc. with
False alarm caused by machine interferes；
Stent-type installation is convenient and efficient without changing brake inside structure, is easy universal；
In addition, hall displacement transducer and correlation module use it is universal and of low cost.
Description of the drawings
Exemplary embodiment of the present invention is described in more detail below in conjunction with attached drawing.For clarity, no
It is shown with identical label with identical component in attached drawing.It should be noted that attached drawing only plays the role of signal, not necessarily press
It is drawn according to ratio.In the drawings：
Fig. 1 is the structural schematic diagram of the detection device of the braking pad wear for detecting electromagnetic brake of the present invention；
Fig. 2 is the structure diagram of the electromagnetism displacement sensing unit of the present invention；
Fig. 3 be the present invention include Hall element electromagnetism displacement sensing unit fundamental diagram；
Fig. 4 is the structural schematic diagram braked before pad wear in the detection device of the detection braking pad wear of the present invention；
Fig. 5 is the structural schematic diagram after the braking pad wear in the detection device of the detection braking pad wear of the present invention.
Specific implementation mode
Exemplary embodiment of the present invention is described in detail below with reference to appended attached drawing.
As shown in Figure 1, a kind of detection device for detecting the braking pad wear of electromagnetic brake of the present invention, packet
It includes：Electromagnetism displacement sensing unit 1, first support 2, sensor block 3, second support 4, Signal-controlled switch 5, timer unit 6, report
Alert signal output unit 7, quiet piece 8, motion block 9, the brake(-holder) block 10 being arranged between motion block and braked wheel and braked wheel 11.Its
In, there is certain gap, the electromagnetism displacement sensing unit 1 to be mounted on system by first support 2 between motion block 9 and quiet piece 8
On the motion block 9 of dynamic device, sensor block 3 is mounted on by second support 4 on quiet piece 8 of brake, the electromagnetism displacement sensing unit 1
Including hall sensing unit and processor, the hall sensing unit is oppositely arranged with sensor block 3, is thus not necessarily to change braking
Device internal structure, and it is easy for installation.In addition, the first support 2 and second support 4 are respectively L-type metallic support, using this
Kind structure not only consolidates but also lighter in weight, saves cost.
Alarm signal output unit 7 is electrically connected with the signal output end of processor, in the electromagnetism displacement sensing unit 1
Hall sensing unit can sense the variation of the gap between the motion block 9 and quiet piece 8.It is being handled when gap changing value is less than setting
When predetermined value in device, both gap width variation was little either unchanged as shown in figure 4, illustrating that brake(-holder) block does not wear or wears
It is not serious, then not output alarm signal (or low level of output 0V), when the gap changing value is more than setting in the processor
Predetermined value when, both gap changed greatly brake(-holder) block serious wear, as shown in figure 5, the processor then exported to alarm signal it is single
Member 7 sends alarm signal so that alarm signal output unit 7 exports warning message.It is both, after brake(-holder) block 10 wears thinning,
Since quiet piece 8 remains stationary as, the displacement between the sensor block 3 and electromagnetism displacement sensing unit 1 that are mounted in first support 2 becomes
Greatly.When abrasion reaches the preset value of setting in the processor, electromagnetism displacement sensing unit 1 is anti-by output signal of processor
Turn, directly can also can send alarm signal indirectly to alarm signal output unit 7 via timing module 6 as described below
(such as piezoelectric signal of 24V).
As shown in Fig. 2, the electromagnetism displacement sensing unit 1 of the present invention can include hall sensing unit 13 and processor 14,
The processor 14 may include signal processing unit and storage unit.13 output signal of hall sensing unit can be linear
, can also be nonlinear or phase step type.The signal processing unit can be microcontroller, DSP or general processor, be somebody's turn to do
Signal processing unit can be integrated with storage unit and separated can also be independently arranged.The storage unit can be used
In the relevant information of storage, such as changing the predetermined value being compared with above-mentioned gap, which can be：It is read-only
Memory (ROM), programming ROM, erasable programmable ROM, electrically erasable programmable ROM (EEPROM) or flash memory etc..
Preferably, the electromagnetism displacement sensing unit 1 includes hall sensing unit, and the sensor block 3 includes iron or magnet.
Here it can also be magnet that sensor block, which can be iron, because the Hall device of the preferred embodiment as sensing unit can within
Embedding magnet can not also embed magnet, and when embedded magnet, sensing device can be iron, and when its not embedded magnet,
The sensing device is exactly magnet.Below by taking the Hall device of not embedded magnet as an example, the sensing device is magnet.The place
It manages device 14 and self study is first carried out according to the relative installation of electromagnetism displacement sensing unit 1 and magnet, then according to default abrasion
Amount initialization output signal inverts threshold values.As shown in figure 3, the basic functional principle of hall displacement transducer is：When electromagnetism displacement
When hall sensing unit (Hall sensor) in sensing unit 1 is placed in the magnetic field B of the directions Z+, if passing through electric current in the Y direction
A then just will produce Hall voltage u in X-direction, and size is directly proportional to magnetic field intensity B.When magnetic field B is provided by one block of magnet,
Displacement between magnet and hall device will cause magnetic field intensity B to change and then can be showed by Hall voltage.Therefore,
Ohject displacement can accurately be measured using this kind of hall displacement transducer, and cheap, technology maturation.
Referring again to FIGS. 1, can be serially connected between the electromagnetism displacement sensing unit 1 and alarm signal output unit 7
Timer unit 6, the timer unit 6 constantly receive come processor period warning information regular hour in it
Afterwards, warning message is just sent to the alarm signal output unit 7.It is both, only the output of electromagnetism displacement sensing unit 1 abrasion
Abrasion alarm signal after signal exports certain time (preset time cycle in timer unit 6), then after will confirm that
Output, is given to elevator control system, can filter the random disturbances such as live shock and vibration, temperature fluctuation, brake remanent magnetism and cause
False alarm.Preferably, the scheduled time cycle can be 20 seconds.
In addition, the timer unit 6 further includes having reset switch RST, the letter of reset switch RST and the processor
The electrical connection of number output end, when processor no signal export, the reset switch is for by the timer in the timer unit 6
It automatically resets.
It is serially connected with Signal-controlled switch 5 between the electromagnetism displacement sensing unit 1 and timer unit 6, signal control
Switch is electrically connected with the brake signal of electromagnetic brake or standby signal input terminal, when the electromagnetic brake works, the letter
Number control switch 5 disconnects, and when the electromagnetic brake does not work, which connects, and is braked with starting detection
The abrasion condition of piece.Only the Signal-controlled switch 5 is connected, i.e., is just detected when brake dead electricity is closed, prevents brake
Self-field interferes Hall sensor when obtaining electric, while user can also be avoided to be stranded because braking pad wear alarm due to.
The alarm signal output unit 7 may include alarm lamp or alarming horn, can by warning message with bright light or
Form of sound exports, and the output unit can also be connect with output equipments such as display or printers in addition, with image or text
The form of shelves exports abrasion condition.
Moreover, it relates to a kind of elevator (not shown), which includes recited above for detecting electromagnetic system
The detection device of the braking pad wear of dynamic device, due to other structures and the elevator in the prior art of the elevator described here being related to
Structure is same or like, is no longer described in greater detail here.
The description that the specific illustrative embodiment of the present invention is presented in front is for the purpose of illustration and description.Front
Description be not intended to become without missing, be not intended to limit the invention to disclosed precise forms, it is clear that root
All it is possible according to many change and variations of above-mentioned introduction.The exemplary embodiment was chosen and described for the sake of explain this hair
Bright certain principles and practical application, so that others skilled in the art can realize and utilize each of the present invention
Kind illustrative embodiments and its various selection forms and modification.The scope of the present invention be intended to by the appended claims and
Its equivalents is limited.
Claims (10)
1. it is a kind of for detect electromagnetic brake braking pad wear detection device, the brake include braked wheel (11),
Motion block (9), quiet piece (8) and the brake(-holder) block (10) being arranged between motion block and braked wheel, the motion block (9) and quiet piece (8) it
Between there is gap, which is characterized in that the detection device includes：Electromagnetism displacement sensing unit (1) and sensor block (3)；
The sensor block (3) is arranged on quiet piece (8)；
The electromagnetism displacement sensing unit (1) is arranged on motion block (9), and the electromagnetism displacement sensing unit (1) with it is described
Sensor block (3) is oppositely arranged；
The electromagnetism displacement sensing unit (1) senses the gap between the motion block (9) and quiet piece (8) and changes, when gap changes
When value is more than predetermined value, the electromagnetism displacement sensing unit (1) generates alarm signal.
2. the detection device according to claim 1 for detecting the braking pad wear of electromagnetic brake, it is characterised in that：
The detection device further includes alarm signal output unit (7), and the electromagnetism displacement sensing unit (1) and alarm signal output are single
It is serially connected with timer unit (6) between first (7)；
The timer unit (6) constantly receives interior with the predetermined time cycle from electromagnetism displacement sensing unit (1)
After alarm signal, alarm signal is sent to the alarm signal output unit (7).
3. the detection device according to claim 2 for detecting the braking pad wear of electromagnetic brake, it is characterised in that：
The timer unit (6) includes reset switch, the letter of the reset switch and the processor of the electromagnetism displacement sensing unit
The electrical connection of number output end, when processor no signal export, the reset switch is for by the timing in the timer unit (6)
Device is resetted.
4. the detection device according to claim 2 for detecting the braking pad wear of electromagnetic brake, it is characterised in that：
Signal-controlled switch (6) is serially connected between the electromagnetism displacement sensing unit (1) and timer unit (6), signal control is opened
Pass is electrically connected with the brake signal of electromagnetic brake or standby signal input terminal, when the electromagnetic brake works, the signal
Control switch (6) disconnects.
5. the detection device according to claim 1 or 2 for detecting the braking pad wear of electromagnetic brake, feature exists
In：The electromagnetism displacement sensing unit (1) exports linear, non-linear or phase step type signal.
6. the detection device according to claim 1 or 2 for detecting the braking pad wear of electromagnetic brake, feature exists
In：The electromagnetism displacement sensing unit (1) is arranged by first support (2) on the motion block (9)；The sensor block (3) is logical
Second support (4) is crossed to be arranged on quiet piece (8).
7. the detection device according to claim 2 for detecting the braking pad wear of electromagnetic brake, it is characterised in that：
The electromagnetism displacement sensing unit (1) includes hall sensing unit.
8. the detection device according to claim 7 for detecting the braking pad wear of electromagnetic brake, it is characterised in that：
The sensor block (3) includes iron or magnet.
9. the detection device according to claim 7 for detecting the braking pad wear of electromagnetic brake, it is characterised in that：
The hall sensing unit includes hall displacement transducer and/or the alarm signal output unit (7) includes alarm lamp or report
Alert loudspeaker.
10. a kind of elevator, it is characterised in that：The elevator includes described in any one of claim 1 to 9 for detecting electromagnetism
The detection device of the braking pad wear of brake.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307178.4A CN108799373A (en) | 2017-05-04 | 2017-05-04 | Detection device and elevator for the braking pad wear for detecting electromagnetic brake |
| PCT/EP2018/061281 WO2018202745A1 (en) | 2017-05-04 | 2018-05-03 | Detection device for detecting brake pad wear of an electromagnetic brake and an elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307178.4A CN108799373A (en) | 2017-05-04 | 2017-05-04 | Detection device and elevator for the braking pad wear for detecting electromagnetic brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108799373A true CN108799373A (en) | 2018-11-13 |
Family
ID=62116860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710307178.4A Pending CN108799373A (en) | 2017-05-04 | 2017-05-04 | Detection device and elevator for the braking pad wear for detecting electromagnetic brake |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108799373A (en) |
| WO (1) | WO2018202745A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109029233A (en) * | 2018-08-31 | 2018-12-18 | 中国联合网络通信集团有限公司 | Brake block thickness detecting system and vehicle |
| CN109682519A (en) * | 2018-12-29 | 2019-04-26 | 四川陆通检测科技有限公司 | Detecting and the system and method for stablizing effective prestress under intermediate plate displacement method test anchor |
| CN111606165A (en) * | 2019-02-26 | 2020-09-01 | 肯德隆（菲林根）有限公司 | Electromagnetic brake or clutch |
| CN111824884A (en) * | 2019-04-15 | 2020-10-27 | 奥的斯电梯公司 | Brake lining monitoring system |
| CN112179275A (en) * | 2019-07-01 | 2021-01-05 | 欧姆龙(上海)有限公司 | Grating scale sensor and detection method |
| CN112408175A (en) * | 2020-11-20 | 2021-02-26 | 日立电梯（广州）自动扶梯有限公司 | Abrasion detection structure and escalator or moving sidewalk |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117142287A (en) * | 2022-05-24 | 2023-12-01 | 奥的斯电梯公司 | Self-detection device and method for braking device and elevator system |
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Cited By (9)
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| CN109029233A (en) * | 2018-08-31 | 2018-12-18 | 中国联合网络通信集团有限公司 | Brake block thickness detecting system and vehicle |
| CN109029233B (en) * | 2018-08-31 | 2020-06-26 | 中国联合网络通信集团有限公司 | Brake block thickness detection system and vehicle |
| CN109682519A (en) * | 2018-12-29 | 2019-04-26 | 四川陆通检测科技有限公司 | Detecting and the system and method for stablizing effective prestress under intermediate plate displacement method test anchor |
| CN111606165A (en) * | 2019-02-26 | 2020-09-01 | 肯德隆（菲林根）有限公司 | Electromagnetic brake or clutch |
| CN111824884A (en) * | 2019-04-15 | 2020-10-27 | 奥的斯电梯公司 | Brake lining monitoring system |
| CN111824884B (en) * | 2019-04-15 | 2023-10-10 | 奥的斯电梯公司 | Brake lining monitoring system |
| CN112179275A (en) * | 2019-07-01 | 2021-01-05 | 欧姆龙(上海)有限公司 | Grating scale sensor and detection method |
| CN112179275B (en) * | 2019-07-01 | 2022-06-03 | 欧姆龙(上海)有限公司 | Grating scale sensor and detection method |
| CN112408175A (en) * | 2020-11-20 | 2021-02-26 | 日立电梯（广州）自动扶梯有限公司 | Abrasion detection structure and escalator or moving sidewalk |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018202745A1 (en) | 2018-11-08 |
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Address after: 201602 No.2 Xunye Road, Sheshan District, Songjiang Industrial Zone, Songjiang District, Shanghai Applicant after: Tisheng elevator (Shanghai) Co.,Ltd. Address before: 201602 No.2 Xunye Road, Sheshan District, Songjiang Industrial Zone, Songjiang District, Shanghai Applicant before: ThyssenKrupp Elevator (Shanghai) Co.,Ltd. |
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