CN112611558B - Clutch working condition simulation device for friction testing machine - Google Patents
Clutch working condition simulation device for friction testing machine Download PDFInfo
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- CN112611558B CN112611558B CN202011625844.7A CN202011625844A CN112611558B CN 112611558 B CN112611558 B CN 112611558B CN 202011625844 A CN202011625844 A CN 202011625844A CN 112611558 B CN112611558 B CN 112611558B
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- 238000012360 testing method Methods 0.000 title claims abstract description 11
- 238000004088 simulation Methods 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 11
- 230000008859 change Effects 0.000 claims abstract description 4
- 238000012546 transfer Methods 0.000 claims abstract description 3
- 239000013307 optical fiber Substances 0.000 claims description 23
- 238000012545 processing Methods 0.000 claims description 15
- 238000009826 distribution Methods 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000013500 data storage Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims 1
- 238000012938 design process Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/022—Power-transmitting couplings or clutches
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention relates to a clutch working condition simulation device for a friction testing machine, which uses a plurality of friction elements with equal proportion reduced to replace pins and discs, adopts a microminiature temperature sensing sensor and collector ring data acquisition system arrangement scheme, and can measure the internal temperature change state of the friction elements in real time. Multiple friction elements can be installed to simulate the actual clutch use condition of the vehicle, so that the friction elements can conduct heat rapidly in the normal direction to transfer friction heat in the rotating friction process, and the thin sheet can effectively reflect the friction interface temperature state in the normal direction. The device has higher guiding significance and practical value in the design process of vehicles using the dry clutch transmission device and the wet clutch transmission device.
Description
Technical Field
The invention relates to the field of friction test equipment, in particular to a clutch working condition simulation device for a friction test machine.
Background
With the progress of modern science and technology, the fields of advanced manufacturing, transportation, aerospace and the like are rapidly developed. In mechanical systems, friction elements are an important component of the power execution link, and the friction and wear properties directly affect the performance of the system: on the one hand, friction brings about unnecessary energy loss and unavoidable abrasion, thereby affecting the working performance and the service life of the system, and about half of the world energy is consumed by one or more forms of friction according to investigation; on the other hand, reasonable utilization of friction can improve the performance of the mechanical system. In the design of a vehicle transmission system, friction elements, such as clutches, bearings, brakes, etc., can perform the functions of starting and stopping the vehicle, transmitting power, changing output torque, etc., and are an indispensable component of the transmission system. However, during the operation of the friction element, the mechanical energy is inevitably converted into internal energy, so that the friction pair material expands thermally due to the temperature rise, which makes the friction element often operate in a severe working environment with high temperature and high pressure, and the friction element is easy to reduce its own performance, such as heat decay of friction coefficient at high temperature, ablation of the friction material caused by over high surface temperature, friction noise and vibration caused by instability, and these problems will lead to the overall performance reduction and even failure of the vehicle transmission system. At present, optimizing the design, use and improving the reliability and durability of the friction element has become one of the important challenges facing research and designers, and revealing friction and wear mechanisms and influencing factors of the friction element has become a hot spot and difficulty in urgent research.
The traditional pin-disc friction sensor can only measure the ambient temperature in a thermostatic chamber, and cannot effectively measure the real-time temperature at the contact point of the friction plate and the distribution state of hot spots generated by friction. In addition, the traditional sensor can only test the concentrated force in the friction rotation process and has a larger difference from the middle surface binding force of the friction elements such as the clutch in the working process, so that the influence caused by the factors such as temperature, warping and the like in the working process of the clutch cannot be effectively disclosed.
Disclosure of Invention
The invention aims to provide a clutch working condition simulation device for a friction testing machine, which effectively overcomes the defect that an empirical calculation formula of friction torque cannot reflect the influence of temperature, hot spot, warping and other influence factors under the working condition of the existing clutch, and improves the calculation precision of the friction torque.
In order to achieve the above object, the present invention provides the following solutions:
a clutch operating condition simulation device for a friction testing machine, the simulation device comprising:
the device comprises a first clutch friction plate, a second clutch friction plate, a friction sheet, a temperature sensing optical fiber sensor, a guide ring, a temperature signal processing unit and a rotary transmission shaft;
the first clutch friction plate, the friction sheet and the second clutch friction plate are sequentially arranged on the rotary transmission shaft;
the friction sheet is provided with the temperature sensing optical fiber sensor;
the temperature signal processing unit is arranged in the circumferential direction of the friction sheet;
the guide ring is respectively connected with the temperature sensing optical fiber sensor and the temperature signal processing unit and is used for transmitting the temperature signal to the temperature signal processing unit.
Optionally, the temperature sensing optical fiber sensor is a plurality of, sets up according to the demand of measurement station in the relevant position of friction thin slice.
Optionally, the temperature sensing optical fiber sensor comprises a data storage module and a wireless transmitting module.
Optionally, the friction sheets are a plurality of, and the friction sheets are an integral body and are arranged between the first clutch friction sheet and the second clutch friction sheet.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: the invention replaces the pin and the disk with a plurality of friction elements with equal proportion reduction, and adopts the arrangement scheme of the microminiature temperature-sensing sensor and the collector ring data acquisition system, so that the temperature change state in the friction elements can be measured in real time. Multiple friction elements can be installed to simulate the use condition of a real clutch of a vehicle, and reflect the environmental conditions such as hot spot propagation, warping, heat dissipation and the like. The device has higher guiding significance and practical value in the design process of vehicles using the dry clutch transmission device and the wet clutch transmission device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a clutch operating mode simulator for a friction tester according to the present invention;
symbol description: 1-a first clutch friction plate; 2-a second clutch friction plate; 3-friction sheet; 4-a guide ring; a 5-temperature signal processing unit; 6-rotating the transmission shaft.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a clutch working condition simulation device for a friction testing machine, so as to improve the friction torque calculation accuracy.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
FIG. 1 is a schematic diagram of a clutch operating mode simulator for a friction tester according to the present invention, the simulator comprising:
the device comprises a first clutch friction plate 1, a second clutch friction plate 2, a friction sheet 3, a temperature sensing optical fiber sensor, a guide ring 4, a temperature signal processing unit 5 and a rotary transmission shaft 6.
The first clutch friction plate 1, the friction plate 3 and the second clutch friction plate 2 are arranged on a rotary transmission shaft 6 in sequence.
The friction sheet 3 is provided with a plurality of temperature-sensing optical fiber sensors. Because of the embedding of the microminiature temperature-sensing optical fiber sensor, the friction driving and driven parts can be in a rotating state.
The temperature signal processing unit 5 is provided in the circumferential direction of the friction sheet 3.
The guide ring 4 is respectively connected with the temperature sensing optical fiber sensor and the temperature signal processing unit 5 and is used for transmitting the temperature signal to the temperature signal processing unit. The microminiature temperature sensor and collector ring data acquisition system arrangement scheme is characterized in that a high-response temperature sensing optical fiber sensor with multiple measuring points is integrated in a friction sheet, the optical fiber sensor is connected with a temperature signal processing unit by adopting a collector ring, and the signal derivation problem under the working condition that friction driving and driven parts all have rotating speeds but are not stationary is solved.
The temperature sensing optical fiber sensors are multiple and are arranged at corresponding positions of the friction thin sheet 3 according to the requirements of the measuring points.
The temperature sensing optical fiber sensor comprises a data storage module and a wireless transmitting module, and can be used for measuring in real time with high precision and effectively observing working states such as contact hot spot distribution, temperature change trend and the like in the sliding and rubbing process of the friction element.
The friction plates 3 are plural, and the plurality of friction plates 3 are integrally provided between the first clutch plate 1 and the second clutch plate 2. By reasonably arranging the single friction sheet and the plurality of friction sheets into a whole, the warping phenomenon of the clutch in the actual use process can be effectively simulated, the actual force transmission characteristic in the warping state can be effectively measured, and the hot spot temperature, the distribution state and the like in the surface contact process can be effectively measured.
Different from the traditional friction pin disc sensing equipment, the clutch element for the vehicle is reasonably calculated and reduced to a certain degree according to the equivalent principle, so that the clutch element can conduct heat rapidly in the normal direction to transfer friction heat in the rotating friction process, and the sheet can effectively reflect the temperature state of a friction interface in the normal direction.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (3)
1. A clutch operating mode simulator for a friction tester, the simulator comprising:
the device comprises a first clutch friction plate, a second clutch friction plate, a friction sheet, a temperature sensing optical fiber sensor, a guide ring, a temperature signal processing unit and a rotary transmission shaft;
the first clutch friction plate, the friction sheet and the second clutch friction plate are sequentially arranged on the rotary transmission shaft;
the friction sheet is provided with the temperature sensing optical fiber sensor; the temperature sensing optical fiber sensor is embedded on the friction sheet; because of the embedding of the microminiature temperature-sensing optical fiber sensor, the friction driving and driven parts can be in a rotating state;
the temperature signal processing unit is arranged in the circumferential direction of the friction sheet;
the guide ring is respectively connected with the temperature sensing optical fiber sensor and the temperature signal processing unit and is used for transmitting a temperature signal to the temperature signal processing unit; the microminiature temperature sensor and the collector ring data acquisition system arrangement scheme is characterized in that a high-response temperature sensing optical fiber sensor with multiple measuring points is integrated in a friction sheet, the optical fiber sensor is connected with a temperature signal processing unit by adopting a collector ring, and the signal guiding problem under the working condition that friction driving and driven parts have rotating speeds instead of static is solved;
the temperature sensing optical fiber sensor comprises a data storage module and a wireless transmitting module, and is used for measuring in real time with high precision and effectively observing the distribution of contact hot spots and the temperature change trend in the sliding and rubbing process of the friction element;
the friction sheets are a plurality of and are integrated and arranged between the first clutch friction sheet and the second clutch friction sheet; by reasonably arranging a single friction sheet and a plurality of friction sheets into a whole, the warping phenomenon of the clutch in the actual use process is effectively simulated, the actual force transmission characteristic in the warping state is effectively measured, and the hot spot temperature and the distribution state in the surface contact are effectively measured;
the clutch element for the vehicle is reduced to a certain degree through reasonable calculation according to an equivalent principle, so that the clutch element can conduct heat rapidly in the normal direction to transfer friction heat in the rotating friction process, and the sheet effectively reflects the friction interface temperature state in the normal direction.
2. The clutch operating mode simulation device for the friction testing machine according to claim 1, wherein the plurality of temperature sensing optical fiber sensors are arranged at corresponding positions of the friction thin sheet according to the requirements of measuring points.
3. The clutch operating mode simulation device for a friction testing machine according to claim 1, wherein the temperature-sensing optical fiber sensor comprises a data storage module and a wireless transmitting module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011625844.7A CN112611558B (en) | 2020-12-31 | 2020-12-31 | Clutch working condition simulation device for friction testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011625844.7A CN112611558B (en) | 2020-12-31 | 2020-12-31 | Clutch working condition simulation device for friction testing machine |
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| CN112611558A CN112611558A (en) | 2021-04-06 |
| CN112611558B true CN112611558B (en) | 2023-06-23 |
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| CN202011625844.7A Active CN112611558B (en) | 2020-12-31 | 2020-12-31 | Clutch working condition simulation device for friction testing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114048699B (en) * | 2021-11-22 | 2024-04-26 | 深圳技术大学 | Method for establishing and calculating electrothermal and electromagnetic transient simulation model of comprehensive energy system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269678A (en) * | 2011-05-13 | 2011-12-07 | 重庆市蓝黛实业有限公司 | Testing device for temperature measurement of wet multi-plate clutch friction steel disc |
| CN102865929A (en) * | 2012-10-26 | 2013-01-09 | 重庆理工大学 | Measurement and test device for transient surface temperature of friction plate of dry clutch |
| CN104155020A (en) * | 2014-08-15 | 2014-11-19 | 中国北方车辆研究所 | Friction pair temperature testing method |
| CN109916810A (en) * | 2018-12-28 | 2019-06-21 | 中国矿业大学(北京) | The simulation of dry type sliding friction pair interface transient temperature and test macro and disk disk module |
| CN211262698U (en) * | 2019-12-28 | 2020-08-14 | 中国第一汽车股份有限公司 | Wet clutch temperature model detection device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7299701B2 (en) * | 2005-09-23 | 2007-11-27 | General Motors Corporation | Compressive fatigue and energy test apparatus and method for testing clutch plate friction materials |
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2020
- 2020-12-31 CN CN202011625844.7A patent/CN112611558B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269678A (en) * | 2011-05-13 | 2011-12-07 | 重庆市蓝黛实业有限公司 | Testing device for temperature measurement of wet multi-plate clutch friction steel disc |
| CN102865929A (en) * | 2012-10-26 | 2013-01-09 | 重庆理工大学 | Measurement and test device for transient surface temperature of friction plate of dry clutch |
| CN104155020A (en) * | 2014-08-15 | 2014-11-19 | 中国北方车辆研究所 | Friction pair temperature testing method |
| CN109916810A (en) * | 2018-12-28 | 2019-06-21 | 中国矿业大学(北京) | The simulation of dry type sliding friction pair interface transient temperature and test macro and disk disk module |
| CN211262698U (en) * | 2019-12-28 | 2020-08-14 | 中国第一汽车股份有限公司 | Wet clutch temperature model detection device |
Non-Patent Citations (1)
| Title |
|---|
| 基于分布式光纤测温的离合器摩擦表面温度场测量;席军强等;《中国公路学报》;20200831(第08期);全文 * |
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