CN107290276A - Turn round frictional testing machine - Google Patents
Turn round frictional testing machine Download PDFInfo
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- CN107290276A CN107290276A CN201710448205.XA CN201710448205A CN107290276A CN 107290276 A CN107290276 A CN 107290276A CN 201710448205 A CN201710448205 A CN 201710448205A CN 107290276 A CN107290276 A CN 107290276A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
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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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/34—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- Automation & Control Theory (AREA)
- Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
Turn round frictional testing machine, including support base, external tooth type pivoting support, rub ring flat-plate, support frame, multiple loading devices and gear, pivoting support inner ring is fixed in support base, each gear shaft is connected in support base, each gear is meshed with pivoting support external tooth, the ring flat-plate that rubs is arranged on pivoting support outer ring, support frame is arranged on support base, each loading device is arranged on support frame, each loading device is uniformly distributed around drag ring plate axis, the loading device includes the mounting bracket being fixed on support frame, two groups of scroll boxs are set in mounting bracket, one piece of top plate two ends is withstood on two groups of scroll boxs respectively from bottom to top, the friction force sensor for detecting top plate horizontal direction thrust is installed in mounting bracket side, pipe sleeve is provided with top plate, it is sequentially provided with pressurization part from top to bottom in pipe sleeve, pressure sensor and clamping part, clamping part is used for fixed friction piece, pressurization part promotes clamping part that friction plate is resisted against on friction ring flat-plate by pressure sensor.
Description
Technical field
The present invention relates to revolution frictional testing machine, machine is used to test friction plate.
Background technology
Existing linear reciprocating frictional testing machine only supports that a friction plate is tested, and test efficiency is not high；Made
Bidirection press sensor accuracy and less stable, push away direction and draw the coefficient of friction difference measured by direction larger, examination
Test that data are inaccurate, the housing rigidity of testing machine is not enough, when normal pressure reaches more than 200kN, and complete machine deformation is more apparent, influence
The accuracy of test data；Existing linear reciprocating frictional testing machine uses hydraulic-driven, uses the servo valve of degree of precision
To realize friction velocity control and direction transformation, drive system is more complicated, and reliability is relatively low, and involves great expense.
The content of the invention
Present invention solves the technical problem that being to provide a kind of revolution frictional testing machine, multiple friction plates can be carried out simultaneously
Experiment, is measured the normal pressure and frictional force of each piece of friction plate, the coefficient of friction of each friction plate is drawn with this.
In order to solve the above-mentioned technical problem, the technical scheme is that：Revolution frictional testing machine, including support base,
External tooth type pivoting support, friction ring flat-plate, support frame, multiple loading devices and reductor, pivoting support inner ring are fixed on support bottom
On seat, each reductor is connected in support base, and each gear is meshed with pivoting support external tooth, and friction ring flat-plate is arranged on revolution
In supporting outer ring, support frame is arranged on support base, and each loading device is arranged on support frame, and each loading device is around drag ring
Plate axis is uniformly distributed；
The loading device includes setting two groups of scroll boxs, one piece of top plate two ends in the mounting bracket being fixed on support frame, mounting bracket
Withstand on respectively from bottom to top on two groups of scroll boxs, the friction for detecting top plate horizontal direction thrust is installed in mounting bracket side
Force snesor, cylinder sleeve is provided with top plate, pressurization part, pressure sensor and clamping is sequentially provided with from top to bottom in cylinder sleeve
Portion, clamping part is used for fixed friction piece, and pressurization part promotes clamping part that friction plate is resisted against into drag ring by pressure sensor
On plate.
Also include cooling component, the cooling component includes closing ring flat-plate, the collecting ring being arranged on the inside of friction ring flat-plate, opened
If a plurality of snakelike tank and the multigroup paddle hole being opened in friction ring flat-plate on friction ring flat-plate lower surface；
Each group paddle hole is corresponding with each bar snakelike tank, and the paddle hole includes inlet opening and apopore, snakelike tank two ends
It is respectively communicated with inlet opening one end and apopore one end；
Along collecting ring circumferencial direction, a plurality of grooving, grooving and friction ring flat-plate internal face structure are offered in collecting ring outside wall surface
Circularize cavity, include water inlet cavity and water outlet cavity in each toroidal cavity, be provided with collecting ring internal face it is multiple with
Water supply connector and multiple water out adapters being connected with water outlet cavity that water inlet cavity is connected；
The inlet opening is connected away from snakelike tank one end with water inlet cavity, and apopore connects away from snakelike tank one end and water outlet cavity
Logical, closing ring flat-plate is sealingly mounted on each snakelike tank, by each snakelike tank and closed-loop plate shape into a serpentine channel.
Pivoting support inner ring is installed in support base by many set screws, is pressed between set screw and pivoting support
Tightly there is locating shim, locating shim one end is fixedly connected on collecting ring internal face.
The support base includes installing plate and bottom plate, is connected between installing plate and bottom plate by many supporting plates, in peace
Fixed core cylinder in plate is filled, support frame, reductor and pivoting support are respectively mounted on a mounting board, core cylinder upper end protrudes from installing plate.
The mounting bracket includes two positioning seats, and the positioning seat includes being fixed with transverse slat, transverse slat one end on underframe, underframe
Underframe is protruded from, one piece of riser is fixed with transverse slat, is fixed between riser and transverse slat by a plurality of link of boards, two positioning
Seat in two pieces of risers by many pull bar detachable connections, two underframe sides by one piece of upper frame detachable connection,
Top plate is placed between two pieces of underframe, and two groups of scroll boxs are separately positioned on the two ends of top plate, by top plate from bottom to top by two groups of rollings
Motion block top pressure protrudes from one end of underframe in two pieces of transverse slats, and the friction force sensor is located between upper frame and top plate.
Two mounting holes, two spiral shells are offered back on being provided with upper frame one side on a piece of catch, catch in each underframe
Nail is worn two mounting holes and is connected with underframe, and catch one end can slide into the gap between two underframe along mounting hole..
The pressurization part includes the end cap of cylinder sleeve upper end is fixedly mounted, and loading bolt is threaded with the middle part of end cap, plus
Carry bolt lower end to be rotatably coupled in a contiguous block, pressure sensor is by many screw connections under contiguous block
End.
The clamping part includes multi-diameter shaft and by screw connection in the cylinder sleeve of cylinder sleeve lower end, and cylinder sleeve is interior to be provided with piston, lives
Fill in lower end to be located at outside cylinder sleeve, offer the groove for accommodating friction plate in piston, blind hole is offered in piston upper end,
Dished spring assembly is provided with blind hole, the thinner one end of multi-diameter shaft is inserted in dished spring assembly, and the thicker one end of multi-diameter shaft is pressed in dished spring assembly
On, pressure sensor is pressed on multi-diameter shaft.
It is a kind of to turn round the method that frictional testing machine carries out friction test, comprise the following steps：
Before experiment, each pressure sensor and each friction force sensor are connected with computer, by computer record and display malleation
Data detected by force snesor and friction force sensor；Cooling component is poured into cooling water.
The first step：Each friction plate is installed on each loading device, and allows each friction plate to be attached on friction ring flat-plate；
Second step：The experiment opened on computer, operation computer shows software, and pressure sensor transfers data to electricity in real time
Brain, computer start recording test data；
3rd step：Friction plate is loaded；
4th step：After time and humiture when record experiment is opened, firing test machine rotates friction ring flat-plate, and computer is real-time
Record the data of pressure sensor and friction force sensor；
5th step：To after the stipulated time, testing machine stops, and calculates friction coefficient μ, and the computational methods of friction coefficient μ are：μ is equal to
Ff divided by Fn；Fn is the experiment normal pressure measured by pressure sensor；Ff is the experiment friction measured by friction force sensor
Power.
Beneficial effects of the present invention are：
1st, multi-disc friction piece can simultaneously be pressed on friction ring flat-plate and carry out friction test by multiple loading devices, it is allowed to try simultaneously
Each friction plate specification tested is different from normal pressure, and compared with existing linear reciprocating frictional testing machine, examination is greatly improved
Test ability and efficiency；
2nd, according to the handling characteristics of rotation test machine, a kind of friction element of overall floating structure is devised, according to level side
To force balance principle, the additional torque brought using the unequal autobalance frictional force of support force on vertical direction is ingenious
Ground has extracted frictional force from complicated power system.
3rd, while driving external tooth type pivoting support to rotate using multiple reductors, the output of frequency converter regulation motor has been shared
Moment of torsion, makes the load that little gear and pinion shaft are undertaken significantly reduce, and reduces the requirement to its intensity.
4th, cooling component can cool to friction ring flat-plate, it is ensured that effective stable operation of equipment, is in addition drag ring
Plate cooling is poured water simultaneously into each serpentine channel using water inlet cavity, expands the contact area with water, it is ensured that pour water
Validity and improve cooling effect.
5th, core cylinder simplifies support base structure, water supply hose and delivery hose can be inserted into by core cylinder water supply connector and
On water out adapter, the understructure of optimization is convenient to enter assembling to it.
6th, this patent devises the rigidity of both sides positioning seat using the method for finite element simulation so that two positioning seat during experiment
Deflection keeps basically identical, it is to avoid loading device two ends cause friction plate unbalance loading because deformation is inconsistent.
7th, two positioning seats are attached by this patent using pull bar, and two positioning seats are combined into an entirety, in pressurization
When portion pushes friction plate, can avoid two positioning seats because of cantilever support excessive deformation.
8th, normal pressure load is kept using dished spring assembly, when friction disc wear, it is true that dished spring assembly can compensate for wear extent
Normal pressure during guarantor's experiment is all the time in prescribed limit.
9th, carried out error analysis, recognize and analyze original reason error and structural member size and rigidity caused by error,
The deformation figureofmerit and dimensional accuracy of structural member are assigned with, the error span of the testing machine is about 2.5%, and measurement accuracy is more existing
Linear reciprocating frictional testing machine is greatly improved.
10th, signal acquisition and processing system energy real-time synchronization gather the signal of each sensor, it is ensured that the standard of result of the test
True property, can be with defined form output test data after analysis and processing.
11st, testing machine electric control system possesses the function of adjusting and maintain friction linear velocity, while being capable of monitoring test
Running status, if any one motor breaks down, complete machine power supply can be closed immediately, it is to avoid testing machine is damaged.
Brief description of the drawings
The present invention is described further below in conjunction with the accompanying drawings：
Fig. 1 is dimensional structure diagram of the invention,
Fig. 2 is front view of the invention,
Fig. 3 is top view of the invention,
Dimensional structure diagrams of the Fig. 4 for the present invention on loading device,
Main structure diagrams of the Fig. 5 for the present invention on loading device,
Cross section structure diagrams of the Fig. 6 for the present invention on loading device,
Fig. 7 is cross-sectional view of the invention,
Fig. 8 is the partial enlargement structural representation at B in Fig. 7,
Fig. 9 is the cross-sectional view at A-A in Fig. 3,
Part section structural representations of the Figure 10 for the present invention on cooling component,
Figure 11 is the overlooking the structure diagram of the present invention, is hidden closing ring flat-plate in figure,
Figure 12 is the present invention on loading device measuring principle schematic diagram.
In figure：Support base 1, support frame 2, loading device 3, friction ring flat-plate 4, reductor 5, roller scroll box 7, friction plate
8th, cooling component 9, external tooth type pivoting support 10, installing plate 11, bottom plate 12, supporting plate 13, core cylinder 14, underframe 31, transverse slat 32, vertical
Plate 33, pull bar 34, top plate 35, catch 37, cylinder sleeve 38, mounting hole 39, friction force sensor 61, pressurization part 62, normal pressure sensing
Device 63, clamping part 64, collecting ring 91, grooving 911, snakelike tank 913, locating shim 914, sealing ring 915, closing ring flat-plate 916, enter
Water swivel 921, water out adapter 922, inlet opening 931, apopore 932, loading bolt 621, end cap 622, fastening screw nut 623, company
Connect block 624, cylinder sleeve 641, piston 642, multi-diameter shaft 643, dished spring assembly 644.
Embodiment
As shown in Fig. 1 to 11, frictional testing machine, including support base 1, external tooth type pivoting support 10, friction ring flat-plate are turned round
4th, support frame 2, multiple loading devices 3 and reductor 5, the inner ring of pivoting support 10 are fixed in support base 1, and each reductor 5 connects
It is connected in support base 1, each reductor 5 is meshed with the external tooth of pivoting support 10, friction ring flat-plate 4 is arranged on outside pivoting support 10
On circle, support frame 2 is arranged on support base 1, and each loading device 3 is arranged on support frame 2, and each loading device 3 is around drag ring
The axis of plate 4 is uniformly distributed；
As shown in Figures 4 and 5, the loading device 3 includes setting two groups of rollers in the mounting bracket being fixed on support frame 2, mounting bracket
Scroll box 7, one piece of two ends of top plate 35 are withstood on two groups of scroll boxs 7 respectively from bottom to top, are provided with mounting bracket side for examining
The friction force sensor 61 of the horizontal direction thrust of top plate 35 is surveyed, cylinder sleeve 38 is provided with top plate 35, in cylinder sleeve 38 from top to bottom
Pressurization part 62, pressure sensor 63 and clamping part 64 are sequentially provided with, clamping part 64 is used for fixed friction piece 8, and pressurization part 62 is led to
Crossing pressure sensor 63 promotes clamping part 64 that friction plate 8 is resisted against on friction ring flat-plate 4.
During operating, the motor on the identical reductor 5 of a Frequency Converter Control four, the output gear of each reductor is synchronous
The rotation of the outer ring of pivoting support 10 is driven, allows friction ring flat-plate 4 to be resisted against on each friction plate 8 and rotates, form relative slide therewith.Rubbing
The axis direction of pad 8 and the tangential of the present position of friction plate 8 are measured suffered by friction plate 8 simultaneously using a pressure sensor respectively
The normal pressure and frictional force arrived, finally draws the coefficient of friction of friction plate 8.The output speed of external tooth type pivoting support 10 can pass through
The working frequency of frequency converter regulation motor come control, it is necessary to when can adjust different friction linear velocities.
When measuring frictional force, the coefficient of friction of roller scroll box 7 is 0.002 or so, and mounting bracket and top plate 35 are applied to
Frictional force on ball scroll box 7 can be ignored, and frictional force sensing is pressed to when friction ring flat-plate 4 drags top plate 35 by friction plate 8
During device 61, friction force sensor 61 detects the frictional force that pressure is just friction plate 8.
As shown in FIG. 10 and 11, in addition to cooling component 9, it is described cooling component 9 include closing ring flat-plate 916, be arranged on and rub
The collecting ring 91 of the inner side of ring flat-plate 4 is wiped, a plurality of snakelike tank 913 on friction ring flat-plate 4 lower surface is opened up and is opened in friction ring flat-plate 4
Multigroup paddle hole；
Each group paddle hole is corresponding with each bar snakelike tank 913, and the paddle hole includes inlet opening 931 and apopore 932, snake
The two ends of shape groove 913 are respectively communicated with the one end of inlet opening 931 and the one end of apopore 932；
Along the circumferencial direction of collecting ring 91, five groovings 911, grooving 911 and drag ring are offered in the outside wall surface of collecting ring 91
The internal face of plate 4 constitutes toroidal cavity, and it is water inlet cavity to include second toroidal cavity from top to bottom in five toroidal cavities, the
Four toroidal cavities are water outlet cavity, sealing ring are provided with other cavitys, sealing ring is used for will water inlet cavity and water outlet sky
Chamber is closed at both ends, prevents space of the water between collecting ring 91 and friction ring flat-plate 4 from flowing out；It is provided with the internal face of collecting ring 91
Multiple water supply connectors 921 being connected with water inlet cavity and multiple water out adapters 922 being connected with water outlet cavity；
The inlet opening 931 connect away from the one end of snakelike tank 913 with water inlet cavity, apopore 932 away from the one end of snakelike tank 913 and
Water outlet cavity is connected, and closing ring flat-plate 916 is sealingly mounted on each snakelike tank 913, by each snakelike tank 913 and the closing shape of ring flat-plate 916
Into a serpentine channel.
In use, many water supply hoses that will intake connect each water supply connector 921, many delivery hoses connect water out adapter
922, water is circulated into water cavity, the water in water inlet cavity is entered in serpentine channel by inlet opening 931, is flowed snakelike
Water in passage will take away the heat of friction ring flat-plate 4, and water is then drained into water outlet cavity by apopore 932, finally by water outlet
Pipe is soft to drain, to take away the heat that friction is produced, it is ensured that the difference of the friction temperature of ring flat-plate 4 and environment temperature is no more than test determination
Scope, it is ensured that the stable operation of testing machine.Water leakage is considered to avoid cooling water from influenceing other parts, during design to draw
Lead and reclaim function.
The inner ring of pivoting support 10 is installed in support base 1 by many set screws, in set screw and pivoting support 10
Between compress have locating shim 914, the one end of locating shim 914 is fixedly connected on the internal face of collecting ring 91.
After the inner ring of pivoting support 10 is installed in support base 1 by many set screws, unclamp relative with locating shim 914
The set screw answered, then friction the inner ring of ring flat-plate 4 in coating butter, collecting ring 91 is inserted into friction the inner ring of ring flat-plate 4 in,
And the positioning hole on each locating shim 914 is corresponding with vacant screw hole out on pivoting support 10, fetching souththern pine
Locating shim 914 is fixed on pivoting support 10 by the set screw opened, and realizes the fixation to collecting ring 91, it is to avoid friction ring flat-plate
4 during rotation collecting ring 91 vibrate.
The support base 1 includes installing plate 11 and bottom plate 12, passes through many supporting plates between installing plate 11 and bottom plate 12
13 connections, the fixed core cylinder in installing plate 11, support frame 2, reductor 5 and pivoting support 10 are installed on installing plate 11, core
Cylinder upper end protrudes from installing plate 11.
As shown in figure 4, the mounting bracket includes two positioning seats, the positioning seat includes fixed on underframe 31, underframe 31
There is transverse slat 32, the one end of transverse slat 32 protrudes from underframe 31, one piece of riser 33 is fixed with transverse slat 32, between riser 33 and transverse slat 32
Fixed by a plurality of link of boards, two pieces of risers 33 in two positioning seats pass through many detachable connections of pull bar 34, two
The side of underframe 31 is by one piece of upper frame detachable connection, and top plate 35 is placed between two pieces of underframe 31, and two groups of scroll boxs 7 are distinguished
The two ends of top plate 35 are arranged on, two groups of top pressures of scroll box 7 are protruded from by underframe 31 in two pieces of transverse slats 32 by top plate 35 from bottom to top
One end, the friction force sensor 61 is located between upper frame and top plate 35.
Pull bar 34 is double threaded screw, and the two ends of pull bar 34 are respectively inserted on two pieces of risers 33, then by nut to pull bar
34 are fixed, its role is to：Two positioning seats are combined into an entirety, top plate 35 passes through two groups of scroll boxs from bottom to top
7 when pushing riser 33, ensure that the synchronous stress of two pieces of risers 33, it is to avoid two locating pieces are led because of unilateral stress or unbalance stress
Cause the deflection of riser 33.
Two horizontal kidney-shapeds are offered back on being provided with upper frame one side on a piece of catch 37, catch 37 in each underframe 31
Hole 39, two screws are worn two mounting holes 39 and are connected with underframe 31, and the one end of catch 37 can slide into two underframe 31 along mounting hole 39
Between gap in..
This structure, which can facilitate, to be split out top plate 35 or installs from mounting bracket, and friction plate 8 is replaced and right to facilitate
Each part in cylinder sleeve 38 is repaired, and its demolishing process is to unclamp screw, pull bar 34 and the pressurization part on each catch 37 first
62, then the gap between two underframe 31 is opened, at this moment can along mounting hole 39 to the Slideslip of mounting bracket two by catch 37
So that top plate 35 and scroll box 7 to be extracted out from the space between two underframe 31, to be replaced and friction plate 8 in cylinder sleeve 38
Each part is repaired.
The pressurization part 62 includes the end cap 622 of the upper end of cylinder sleeve 38 is fixedly mounted, and is threaded with and adds at the middle part of end cap 622
Bolt 621 is carried, the lower end of loading bolt 621 is rotatably coupled in a contiguous block 624, and pressure sensor 63 passes through many
Screw connection is in the lower end of contiguous block 624.
Fastening screw nut 623 can be installed on loading bolt 621, during loading, loading bolt 621 can be rotated, aligned
Pressure sensor 63 is loaded, when pressure sensor 63, which is detected, is loaded onto preset pressure, is stopped loading, is then used
And tight bolt is fixed loading bolt 621.
The clamping part 64 includes multi-diameter shaft 643 and by screw connection in the cylinder sleeve 641 of the lower end of cylinder sleeve 38, cylinder sleeve 641
Interior to be provided with piston 642, the lower end of piston 642 is located at outside cylinder sleeve 641, offered in the lower end of piston 642 for accommodating the recessed of friction plate 8
Groove, blind hole is offered in the upper end of piston 642, dished spring assembly 644 is provided with blind hole, the thinner one end of multi-diameter shaft 643 is inserted in dish
In spring component 644, the thicker one end of multi-diameter shaft 643 is pressed on dished spring assembly 644, and pressure sensor 63 is pressed on multi-diameter shaft 643.
As shown in figures 6 and 12, according to the handling characteristics of rotation test machine, devise a kind of floating type loading device, its
Suffered normal pressure is undertaken by both sides roller scroll box 7 on vertical direction, due to additional torque M=A*Ff effect, both sides roller
Scroll box 7 is to the reaction of bearing Fn1 and Fn2 of clamping part 64 and unequal, and in such as Figure 12, Fn1 is more than or equal to Fn2, both differences
The torque brought can balance additional torque M just.In the horizontal direction, rolling of the roller scroll box 7 on top plate 35 rubs
Wipe coefficient very little（About 0.002）, therefore realistic frictional forces Ff is approximately equal to measurement frictional force Ff1.
In fig. 12：Ff is realistic frictional forces, and Ff1 measures frictional force, and Fn1 and Fn2 is malleation reaction of bearing, and Fn is malleation
Power, A is the distance between Ff1 and Ff.
The method tested using this revolution frictional testing machine to multigroup friction plate 8 is comprised the following steps：
Before experiment, each pressure sensor 63 and each friction force sensor 61 are connected with computer, by computer record and display
Data detected by pressure sensor 63 and friction force sensor 61；Cooling component 9 is poured into cooling water.
The first step：Each friction plate 8 is installed on each loading device 3, and allows each friction plate 8 to be attached on friction ring flat-plate 4；
With the rubbing surface of all experiment friction plates 8 of sand paper polishing, to remove cutter trade, then experiment friction plate 8 is carried on the back
Face and piston 642 are cleaned out（Note recording the sequence number on friction plate）, then with double faced adhesive tape friction plate 8 is adhered to piston 642
In interior groove, then piston 642 and friction plate 8 be assembled in loading device 3 together, when assembling in addition, should when as far as possible
Friction plate is set to be uniformly distributed around the friction axis of ring flat-plate 4.
Second step：The experiment opened on computer, operation computer shows software, and pressure sensor is transferred data in real time
Computer, computer start recording test data；
Second step：Loading bolt 621 is rotated using torque wrench, torque wrench applies 115~125kN malleation to friction plate
Whether power, at the same time observes the positive pressure value transmitted by pressure sensor 63, see with being shown just on torque wrench
Pressure value is identical, and the quality of pressure sensor 63 is detected with this, then stops loading, then and tight bolt is to loading bolt
621 are fixed；
3rd step：Time and humiture when record experiment is opened in test data sheet sheet, first whether just to determine cooling water circulation
Often operation, then presses testing machine start button and carries out friction test.
Test requirements document：
1）During friction test, environment temperature and braking vane temperature gap must not exceed 2 DEG C；
2）After stable friction factor, the testing time at least continues 2 hours；
3）During friction test, every 20 minutes, check that each trial curve of friction plate 8 and testing equipment have without exception
4th step：After off-test, testing machine is closed, time, humiture in test data sheet sheet during record off-test.Take
Lower friction plate 8 is simultaneously cleaned out, and is carried out and is loaded parts kit after mark, and on parts kit and does corresponding mark on friction plate 8；
The computational methods of wherein friction coefficient μ are：μ is equal to Ff divided by Fn；Experiments of the Fn measured by pressure sensor 63 is just
Pressure；Ff is the experiment frictional force measured by friction force sensor 61.
Claims (9)
1. turn round frictional testing machine, it is characterised in that：Including support base（1）, external tooth type pivoting support（10）, friction ring flat-plate
（4）, support frame（2）, multiple loading devices（3）And reductor（5）, pivoting support（10）Inner ring is fixed on support base（1）On,
Each reductor（5）It is connected to support base（1）On, each reductor（5）And pivoting support（10）External tooth is meshed, and rub ring flat-plate
（4）Installed in pivoting support（10）On outer ring, support frame（2）Installed in support base（1）, each loading device（3）Installed in branch
Support（2）On, each loading device（3）Around friction ring flat-plate（4）Axis is uniformly distributed；
The loading device（3）Including being fixed on support frame（2）On mounting bracket, set two groups of scroll boxs in mounting bracket（7）, one piece
Top plate（35）Two ends withstand on two groups of scroll boxs respectively from bottom to top（7）On, it is provided with mounting bracket side for detecting top plate
（35）The friction force sensor of horizontal direction thrust（61）, in top plate（35）It is provided with cylinder sleeve（38）, in cylinder sleeve（38）It is interior by upper
Pressurization part is sequentially provided with（62）, pressure sensor（63）And clamping part（64）, clamping part（64）For fixed friction piece
（8）, pressurization part（62）Pass through pressure sensor（63）Promote clamping part（64）By friction plate（8）It is resisted against friction ring flat-plate（4）
On.
2. revolution frictional testing machine according to claim 1, it is characterised in that：Also include cooling component（9）, the cooling
Component（9）Including closing ring flat-plate（916）, be arranged on friction ring flat-plate（4）The collecting ring of inner side（91）, open up friction ring flat-plate（4）Under
A plurality of snakelike tank on end face（913）Be opened in friction ring flat-plate（4）Interior multigroup paddle hole；
Each group paddle hole and each bar snakelike tank（913）Corresponding, the paddle hole includes inlet opening（931）And apopore
（932）, snakelike tank（913）Two ends are respectively communicated with inlet opening（931）One end and apopore（932）One end；
Along collecting ring（91）Circumferencial direction, in collecting ring（91）A plurality of grooving is offered in outside wall surface（911）, grooving（911）
With friction ring flat-plate（4）Internal face constitutes toroidal cavity, includes water inlet cavity and water outlet cavity in each toroidal cavity, in collecting ring
（91）Multiple water supply connectors being connected with water inlet cavity are installed on internal face（921）It is connected with multiple with water outlet cavity
Water out adapter（922）；
The inlet opening（931）Away from snakelike tank（913）One end is connected with water inlet cavity, apopore（932）Away from snakelike tank
（913）One end is connected with water outlet cavity, closes ring flat-plate（916）It is sealingly mounted at each snakelike tank（913）On, by each snakelike tank
（913）With closing ring flat-plate（916）Form a serpentine channel.
3. revolution frictional testing machine according to claim 2, it is characterised in that：Pivoting support（10）Inner ring is fixed by many
Position screw installs support base（1）On, in set screw and pivoting support（10）Between compress have locating shim（914）, positioning
Pad（914）One end is fixedly connected on collecting ring（91）On internal face.
4. revolution frictional testing machine according to claim 1, it is characterised in that：The support base（1）Including installing plate
（11）And bottom plate（12）, installing plate（11）And bottom plate（12）Between pass through many supporting plates（13）Connection, in installing plate（11）It is interior
Fixed core cylinder, support frame（2）, reductor（5）And pivoting support（10）It is installed in installing plate（11）On, core cylinder upper end is protruded from
Installing plate（11）.
5. revolution frictional testing machine according to claim 1, it is characterised in that：The mounting bracket includes two positioning seats,
The positioning seat includes underframe（31）, underframe（31）On be fixed with transverse slat（32）, transverse slat（32）One end protrudes from underframe（31）,
Transverse slat（32）On be fixed with one piece of riser（33）, riser（33）With transverse slat（32）Between fixed by a plurality of link of boards, two
Two pieces of risers in positioning seat（33）Pass through many pull bars（34）Detachable connection, two underframe（31）Side passes through one piece of top
Frame detachable connection, top plate（35）It is placed in two pieces of underframe（31）Between, two groups of scroll boxs（7）It is separately positioned on top plate（35）
Two ends, by top plate（35）From bottom to top by two groups of scroll boxs（7）Top pressure is in two pieces of transverse slats（32）Protrude from underframe（31）One
End, the friction force sensor（61）It is located at upper frame and top plate（35）Between.
6. revolution frictional testing machine according to claim 5, it is characterised in that：In each underframe（31）Back on upper frame side
Face is provided with a piece of catch（37）, catch（37）On offer two mounting holes（39）, two screws wear two mounting holes（39）With
Underframe（31）Connection, catch（37）One end can be along mounting hole（39）Slide into two underframe（31）Between gap in.
7. revolution frictional testing machine according to claim 1, it is characterised in that：The pressurization part（62）Including being fixedly mounted
Cylinder sleeve（38）The end cap of upper end（622）, in end cap（622）Middle part is threaded with loading bolt（621）, loading bolt（621）
Lower end is rotatably coupled to a contiguous block（624）It is interior, pressure sensor（63）By many screw connections in contiguous block
（624）Lower end.
8. revolution frictional testing machine according to claim 1, it is characterised in that：The clamping part（64）Including multi-diameter shaft
（643）With by screw connection in cylinder sleeve（38）The cylinder sleeve of lower end（641）, cylinder sleeve（641）It is interior to be provided with piston（642）, piston
（642）Lower end is located at cylinder sleeve（641）Outside, in piston（642）Lower end is offered for accommodating friction plate（8）Groove, in piston
（642）Upper end offers blind hole, and dished spring assembly is provided with blind hole（644）, multi-diameter shaft（643）Thinner one end is inserted in disc spring group
Part（644）It is interior, multi-diameter shaft（643）Thicker one end is pressed in dished spring assembly（644）On, pressure sensor（63）It is pressed in multi-diameter shaft
（643）On.
9. a kind of method tested using revolution frictional testing machine as claimed in claim 1, it is characterised in that：Including such as
Lower step：
Before experiment, each pressure sensor（63）With each friction force sensor（61）Be connected with computer, by computer record and
Show pressure sensor（63）And friction force sensor（61）Detected data；Cool down component（9）Poured into cooling water；
The first step：By each friction plate（8）It is installed to each loading device（3）On, and allow each friction plate（8）It is attached to friction ring flat-plate（4）
On；
Second step：The experiment opened on computer, operation computer shows software, pressure sensor（63）Transfer data in real time
Computer, computer start recording test data；
3rd step：To friction plate（8）Loaded；
4th step：After time and humiture when record experiment is opened, firing test machine makes friction ring flat-plate（4）Rotation, computer is real
Shi Jilu pressure sensors（63）And friction force sensor（61）Data；
5th step：To after the stipulated time, testing machine stops, and calculates friction coefficient μ, and the computational methods of friction coefficient μ are：μ is equal to
Ff divided by Fn；Fn is pressure sensor（63）Measured experiment normal pressure；Ff is friction force sensor（61）Measured
Test frictional force.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710448205.XA CN107290276B (en) | 2017-06-14 | 2017-06-14 | Rotary friction testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710448205.XA CN107290276B (en) | 2017-06-14 | 2017-06-14 | Rotary friction testing machine |
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| CN107290276B CN107290276B (en) | 2023-07-11 |
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| CN112345228A (en) * | 2020-11-10 | 2021-02-09 | 长春理工大学 | Testing machine for detecting dynamic friction torque of turret seat ring |
| RU2780690C1 (en) * | 2022-01-25 | 2022-09-29 | Акционерное общество "Научно-производственная корпорация "Уралвагонзавод" имени Ф.Э. Дзержинского" | Stand for checking the moment of resistance to rotation of turntables |
| CN116858536A (en) * | 2023-07-03 | 2023-10-10 | 徐州丰禾回转支承制造股份有限公司 | Slewing bearing performance test detection device |
| CN116990006A (en) * | 2023-09-26 | 2023-11-03 | 意特利（上海）科技有限公司 | Device and method for detecting service life of plastic-faced veneer |
| CN118010203A (en) * | 2024-04-08 | 2024-05-10 | 深圳市锐健电子有限公司 | Sliding force testing device of sliding table module |
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| CN116990006A (en) * | 2023-09-26 | 2023-11-03 | 意特利（上海）科技有限公司 | Device and method for detecting service life of plastic-faced veneer |
| CN116990006B (en) * | 2023-09-26 | 2023-12-12 | 意特利（上海）科技有限公司 | Device and method for detecting service life of plastic-faced veneer |
| CN118010203A (en) * | 2024-04-08 | 2024-05-10 | 深圳市锐健电子有限公司 | Sliding force testing device of sliding table module |
| CN118010203B (en) * | 2024-04-08 | 2024-06-04 | 深圳市锐健电子有限公司 | Sliding force testing device of sliding table module |
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