CN108362596A - Elevator brake friction material friction and wear behavior evaluation experimental machine - Google Patents
Elevator brake friction material friction and wear behavior evaluation experimental machine Download PDFInfo
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- CN108362596A CN108362596A CN201810102564.4A CN201810102564A CN108362596A CN 108362596 A CN108362596 A CN 108362596A CN 201810102564 A CN201810102564 A CN 201810102564A CN 108362596 A CN108362596 A CN 108362596A
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- Prior art keywords
- brake
- friction material
- friction
- elevator
- sensor
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
Abstract
The present invention relates to a kind of elevator brake friction material friction and wear behavior evaluation experimental machines.The decelerating motor (1) of the experimental machine is connect by shaft coupling with clutch (2), clutch (2) other end is connect with brake axle (3), brake axle (3) other end connects flying wheel (7) by shaft coupling, and flying wheel (7) end is sequentially connected torque sensor (9), rotary angle transmitter (10) by shaft coupling.The brake arm I, II (18,18 ') of loading device (4) is hinged in rack (11), and the loading device (4) is mounted in seal box (5).The data line of data collecting system (12) is connected with each sensor.The present invention can be with the actual condition of simulant elevator, to friction and wear behavior of the accurate evaluation elevator brake friction material under actual condition.To seek different operating modes, experimental basis is provided using the selection and improvement of friction material under varying environment, while experimental result can be used for the failure analysis of elevator friction material and life prediction.
Description
Technical field
The invention belongs to elevator industry technical fields, and in particular to a kind of elevator brake friction material friction and wear behavior
Evaluation experimental machine.
Background technology
Important component of the elevator brake as elevator, braking ability, stability, reliability directly affect elevator
Safe operation and service life.The operation principle of elevator brake is：When elevator remains static, brake shoe holds braking tightly
Wheel ensures that braked wheel does not rotate.When the elevator is run, brake shoe opens, and is completely disengaged with braked wheel.Needed for being reached when lift car
When stopping, electromagnet power-off, brake arm drives brake shoe again to embrace brake axle under the action of tripping spring, and elevator stops work
Make.Therefore, the friction and wear behavior of friction material determines the performance of elevator in brake, the selection of friction material and its
Friction and wear behavior evaluation is most important for the design of elevator brake.However, conventional friction and wear tester can only be into
The continuous frictional wear experiment of row is unable to the actual condition of simulant elevator frequent starting/braking repeatedly, to evaluate friction material
Expect the friction and wear behavior under elevator actual condition, is badly in need of a kind of for evaluating elevator brake friction material repeatedly frequent
Friction and wear behavior evaluation experimental machine under startup/damped condition.Specially for elevator brake Performance Evaluation experimental machine such as China
A kind of elevator brake device for detecting performance and detection method disclosed in sharp (CN104089764 A)》It is a kind of elevator brake
Device for detecting performance, can declutch to elevator brake the property such as gap, spring force, actuation/release current, actuation/release time
It can carry out on-line checking.A kind of elevator brake brake block loss detection device disclosed in Chinese patent (206000911 U of CN)
It is a kind of elevator brake brake block loss detection device, sensor, feedback signal and system is installed in the brake block of brake
Dynamic device control signal series connection, leaks out, then feedback signal provides, and prompting needs replacing brake block when brake block wears up to sensor.
Above-mentioned technology can not simulant elevator actual condition, and only elevator brake overall performance is detected, and whether need
Replace friction material, can not system evaluation actual condition under friction material friction and wear behavior.
Invention content
In order to overcome above-mentioned deficiency existing in the prior art, the present invention to provide a kind of elevator brake friction material friction
Polishing machine evaluation experimental machine, to evaluate the friction and wear behavior of friction material under elevator brake actual condition.
The technical solution adopted by the present invention to solve the technical problems is：A kind of elevator brake friction material fretting wear
Henchnmrk test machine.The decelerating motor of the experimental machine is connect by shaft coupling with clutch, the clutch other end and braking
Axis connection, the brake axle other end connect flying wheel by shaft coupling, and flying wheel end is sequentially connected torque sensing by shaft coupling
Device, rotary angle transmitter.The brake axle is supported by brake axle rack, and the flying wheel is supported by flying wheel rack, loading device
It is hinged in rack by brake arm I, II, the loading device is mounted in seal box, and the data line of data collecting system connects
Connect torque sensor, rotary angle transmitter, pressure sensor, displacement sensor and temperature sensor.
The loading device is symmetrical structure, and the centre position of the brake arm II is fixed on connection using adjusting nut II
One end of screw rod II, the other end of connecting screw II and the middle part of brake shoe are hinged, fix brake shoe backing plate on brake shoe, on brake shoe backing plate
(or riveting, embedded etc.) friction material is pasted, arc panel identical with brake shoe radian, displacement sensor peace are housed on the brake shoe
On the arc panel, and it is furnished with cooling water pipe in the surface of the brake axle, the brake shoe, for controlling friction
The temperature of material.For optical axis in the brake arm I, II mounting hole, tripping spring and adjusting nut are installed in both ends respectively
I, pressure sensor is installed on the optical axis between the outside and tripping spring of brake arm I, II, electromagnet shaft is pacified by fixing nut
On brake arm I, II.Electromagnet is mounted on the intermediate position of electromagnet shaft.
Torque sensor, the rotary angle transmitter of the data collecting system are mounted in flying wheel end by shaft coupling, are used for
Detection brake force, braking torque, braking distance in real time；Pressure sensor is loaded between tripping spring and brake arm I, II, is used for
The pressure of detection tripping spring in real time；Displacement sensor detects the wear extent of friction material by change in displacement in real time；Temperature passes
Sensor passes through the hole on brake shoe and brake shoe backing plate to be contacted with friction material, the temperature for detecting friction material in real time.
It is cooperation between the optical axis and the mounting hole of the brake arm I, II.
Beneficial effects of the present invention：The invention not only can with the actual condition of the multiple frequent starting/braking of simulant elevator, and
And the cooling water in brake shoe can reduce the temperature of friction material, eliminate influence of the accumulation to operating mode of frictional heat, in reality
Now while multiple frequent starting/braking, shorten the time interval of braking, improves conventional efficient.Data collecting system can be real
When detection brake force, the critical datas such as wear extent, friction coefficient, the temperature of braking torque, braking distance and friction material, to
For analyzing the correlation between different parameters, seal box can be with the different operating environment (sand and dust, salt fog etc.) of simulant elevator.
Description of the drawings
Fig. 1 is elevator brake friction material friction and wear behavior evaluation experimental machine structural schematic diagram；
Fig. 2 is loading device structural schematic diagram；
Fig. 3 is partial enlarged view at A；
Fig. 4 is sectional view at brake shoe B；
Fig. 5 is partial enlarged view at C；
Fig. 6 is sectional view at hinged D.
In above-mentioned attached drawing, 1- decelerating motors, 2- clutches, 3- brake axles, 4- loading devices, 5- seal boxs, 6- brakings
Bracing strut, 7- flying wheels, 8- inertia wheel supports, 9- torque sensors, 10- rotary angle transmitters, 11- racks, 12- data acquisition system
System, 13- connecting screws I, 13 '-connecting screws II, 14- optical axises, 15- tripping springs, 16- adjusting nuts I, 17- pressure sensings
Device, 18- brake arms I, 18 '-brake arms II, 19- electromagnet shafts, 20- electromagnet, 21- displacement sensors, 22- brake shoes, 23- are solid
Determine nut, 24- cooling water pipes, 25- temperature sensors, 26- brake shoe backing plates, 27- adjusting nuts II, 28- friction materials, 29- pins
Axis, 30- arc panels.
Specific implementation mode
Fig. 1~6 are elevator brake friction material friction and wear behavior evaluation experimental machine structural representations disclosed by the invention
Figure, the experimental machine by simulant elevator practical work process, can under accurate evaluation difference operating mode friction material friction mill
Damage performance.
The friction and wear behavior evaluation experimental machine of the elevator brake friction material, including decelerating motor 1, clutch 2,
Brake axle 3, loading device 4 and flying wheel 7 are connected by shaft coupling between each component.7 end of flying wheel even connects torsion successively
Square sensor 9, rotary angle transmitter 10.The brake axle 3 is supported by brake axle rack 6, and the flying wheel 7 is by flying wheel rack 8
Support, the diameter and manufacture material of the brake axle 3 are identical as the brake roller of elevator brake.The brake arm I of loading device 4,
II (18,18 ') are hinged in rack 11, and loading device 4 is mounted within seal box 5, and the data line of data collecting system 12 connects
Connect torque sensor 9, rotary angle transmitter 10, pressure sensor 17, displacement sensor 21 and temperature sensor 25.
The loading device 4 of the experimental machine be symmetrical structure, wherein the connecting screw II 13 ' one end using adjust
Nut II 27 be fixed on brake arm II 18 ' intermediate position, connecting screw II 13 ' the middle part of the other end and brake shoe 22 pass through pin
Axis 29 is hinged, and brake shoe backing plate 26 is fixed on brake shoe 22 and rivets friction material 28, equipped with identical with brake shoe radian on brake shoe 22
Arc panel 29, displacement sensor 21 are mounted on the arc panel 29, and perpendicular to the surface of the brake axle 3.The braking
Optical axis 14 is installed, tripping spring 15 and adjusting nut 16, brake arm I are installed in both ends respectively in arm I, II (18,18 ') mounting hole
Pressure sensor 17 is housed, electromagnet shaft 19 is pacified by fixing nut 23 on the optical axis 14 between 18 outside and tripping spring 15
Electromagnet 20 is installed at top mounted in brake arm I, II (18,18 '), 19 intermediate position of the electromagnet shaft.In the brake shoe 22
It is furnished with cooling water pipe 24, the temperature for controlling friction material 28.
Torque sensor 9, the rotary angle transmitter 10 of the data collecting system 12 are last mounted in flying wheel 7 by shaft coupling
End, for detecting brake force, braking torque, braking distance in real time.Pressure sensor 17 is loaded on tripping spring 15 and brake arm I 18
Between, the pressure for detecting tripping spring 15 in real time.Displacement sensor 21 detects friction material 28 by change in displacement in real time
Wear extent；Temperature sensor 25 passes through the hole on brake shoe 22 and brake shoe backing plate 26 to be contacted with friction material 28, for examining in real time
Survey the temperature of friction material.It is cooperation between optical axis 14 and the brake arm I, II (18,18 ') mounting hole.
Illustrate the principle of this elevator brake friction material friction and wear behavior evaluation experimental machine below by specific experiment.
Before experiment：
Friction material 28 is riveted on brake shoe backing plate 26 first, and brake shoe backing plate 26 is fixed on brake shoe 22.Then
Adjustment adjusting nut II 27 makes friction material 28 be contacted with brake axle 3, and adjusting tripping spring 15 by adjusting nut I 16 brakes
Power.Brake clearance is adjusted finally by fixing nut 23.Open cooling water pipe 24.
In experiment：
Control system parameter is set：Rotating speed n, twice trial interval time t, experiment number z, wear extent maximum value h；It opens
Decelerating motor 1, electromagnet 20 are powered, and clutch 2 is closed, and starts to test.When rotating speed reaches setting value n, clutch 2 disconnects,
Subsequent electromagnet 20 powers off, and brake shoe 22 brakes brake axle 3, and braked wheel 3 generates phase under the effect of flying wheel 7 with friction material 28
Primary experiment is completed to the braking process of simulant elevator to sliding.By interval time t, electromagnet 20 is powered, clutch 2
It is again switched off, carries out second and test, repeat this process, the experiment number z until completing setting, electromagnet 20 powers off, clutch
Device 2 is closed, and decelerating motor 1 is closed.Data, analysis brake force, braking torque, braking distance are recorded by data collecting system 12
And the relationship between the critical datas such as wear extent, friction coefficient, temperature of friction material, predict friction material friction and abrasion
Energy.
After experiment：
Cooling water pipe 22 is closed, adjusting nut II 27 is adjusted, takes out brake shoe backing plate 26 and friction material 28, analyzes friction material
The wear form of material.
Seal box 5 can simulate is tested under the environment such as sand and dust, salt fog.
The present invention can be with the actual condition of simulant elevator, to which accurate evaluation elevator brake friction material is in actual condition
Under friction and wear behavior, selection and improvement to seek friction material under different operating modes, use environment provide experimental basis, together
When experimental result can be used for the failure analysis of elevator friction material and life prediction.
Claims (4)
1. a kind of elevator brake friction material friction and wear behavior evaluation experimental machine, it is characterized in that：Decelerating motor (1) passes through connection
Axis device is connect with clutch (2), and clutch (2) other end is connect with brake axle (3), the other end of the brake axle (3)
It is connect with flying wheel (7) by shaft coupling, flying wheel (7) end is sequentially connected torque sensor (9) by shaft coupling, corner passes
Sensor (10)；The brake axle (3) is supported by brake axle rack (6), and the flying wheel (7) is supported by flying wheel rack (8), is added
It carries and sets the brake arm I, II (18,18 ') of (4) and be hinged in rack (11), the loading device (4) is mounted on seal box (5)
Within, the data line of data collecting system (12) is connected with each sensor.
2. elevator brake friction material friction and wear behavior evaluation experimental machine according to claim 1, it is characterized in that：Institute
It is symmetrical structure to state loading device (4), wherein system is fixed in one end of connecting screw II (13 ') using adjusting nut II (27)
The intermediate position of swing arm II (18 '), the other end of connecting screw II (13 ') are cut with scissors with the middle part of brake shoe (22) by axis pin (29)
It connects, brake shoe backing plate (26) is fixed on brake shoe (22), pastes friction material (28), the brake shoe (22) on the brake shoe backing plate (26)
On have an arc panel (30) identical with brake shoe radian, cooling water pipe (24), displacement sensor (21) installation are housed in brake shoe (22)
On the arc panel (30), and perpendicular to the surface of the brake axle (3)；In the brake arm I, II (18,18 ') mounting hole
Optical axis (14) is installed, tripping spring (15) and adjusting nut I (16), the outside of brake arm I (18) and system are installed in both ends respectively
Pressure sensor (17) is housed on the optical axis (14) moved between spring (15)；Electromagnet shaft (19) is installed by fixing nut (23)
Top in brake arm I, II (18,18 '), the intermediate position installation electromagnet (20) of the electromagnet shaft (19).
3. elevator brake friction material friction and wear behavior evaluation experimental machine according to claim 1 or 2, feature
It is：Torque sensor (9), the rotary angle transmitter (10) of the data collecting system (12) are mounted in flying wheel (7) by shaft coupling
End, in real time detect brake force, braking torque, braking distance；Pressure sensor (17) loaded on tripping spring (15) with
Between brake arm I (18), the pressure for detecting tripping spring (15) in real time；Displacement sensor (21) is real-time by change in displacement
Detect the wear extent of friction material (28)；Temperature sensor (25) passes through brake shoe (22) and the hole on brake shoe backing plate (26) and friction
Material (28) contacts, the temperature for detecting friction material in real time.
4. elevator brake friction material friction and wear behavior evaluation experimental machine according to claim 2, it is characterized in that：Institute
It states and is cooperation between optical axis (14) and the mounting hole of the brake arm I, II (18,18 ').
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102564.4A CN108362596A (en) | 2018-02-01 | 2018-02-01 | Elevator brake friction material friction and wear behavior evaluation experimental machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102564.4A CN108362596A (en) | 2018-02-01 | 2018-02-01 | Elevator brake friction material friction and wear behavior evaluation experimental machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108362596A true CN108362596A (en) | 2018-08-03 |
Family
ID=63004240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810102564.4A Pending CN108362596A (en) | 2018-02-01 | 2018-02-01 | Elevator brake friction material friction and wear behavior evaluation experimental machine |
Country Status (1)
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| CN (1) | CN108362596A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109733970A (en) * | 2019-02-26 | 2019-05-10 | 广州广日电梯工业有限公司 | A kind of safety tongs friction Temperature Rise test device and its control method |
| CN109900457A (en) * | 2017-12-11 | 2019-06-18 | 日立楼宇技术（广州）有限公司 | A kind of test platform of traction machine brake dynamic life time |
| CN110116948A (en) * | 2019-06-17 | 2019-08-13 | 福建省特种设备检验研究院 | A kind of brake troubles monitoring device and its monitoring method |
| CN110987697A (en) * | 2019-11-15 | 2020-04-10 | 华东交通大学 | Double-drive stepless speed regulation wheel rail rolling contact fatigue test device and method |
| CN112326263A (en) * | 2020-10-28 | 2021-02-05 | 江苏徐工工程机械研究院有限公司 | Wet brake life estimation system and method |
| CN115342762A (en) * | 2022-07-26 | 2022-11-15 | 盐城川洋机械制造有限公司 | Durability detection mechanism of gear shaft |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900457A (en) * | 2017-12-11 | 2019-06-18 | 日立楼宇技术（广州）有限公司 | A kind of test platform of traction machine brake dynamic life time |
| CN109733970A (en) * | 2019-02-26 | 2019-05-10 | 广州广日电梯工业有限公司 | A kind of safety tongs friction Temperature Rise test device and its control method |
| CN110116948A (en) * | 2019-06-17 | 2019-08-13 | 福建省特种设备检验研究院 | A kind of brake troubles monitoring device and its monitoring method |
| CN110116948B (en) * | 2019-06-17 | 2024-03-26 | 福建省特种设备检验研究院 | Brake fault monitoring device and monitoring method thereof |
| CN110987697A (en) * | 2019-11-15 | 2020-04-10 | 华东交通大学 | Double-drive stepless speed regulation wheel rail rolling contact fatigue test device and method |
| CN110987697B (en) * | 2019-11-15 | 2022-03-15 | 华东交通大学 | Double-drive stepless speed regulation wheel rail rolling contact fatigue test device and method |
| CN112326263A (en) * | 2020-10-28 | 2021-02-05 | 江苏徐工工程机械研究院有限公司 | Wet brake life estimation system and method |
| CN115342762A (en) * | 2022-07-26 | 2022-11-15 | 盐城川洋机械制造有限公司 | Durability detection mechanism of gear shaft |
| CN115342762B (en) * | 2022-07-26 | 2023-09-29 | 盐城川洋机械制造有限公司 | Durability detection mechanism of gear shaft |
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Application publication date: 20180803 |