CN206095904U - Skin -friction resistance coefficient testing arrangement - Google Patents
Skin -friction resistance coefficient testing arrangement Download PDFInfo
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- CN206095904U CN206095904U CN201621088839.6U CN201621088839U CN206095904U CN 206095904 U CN206095904 U CN 206095904U CN 201621088839 U CN201621088839 U CN 201621088839U CN 206095904 U CN206095904 U CN 206095904U
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- 238000012360 testing method Methods 0.000 title claims abstract description 238
- 230000008878 coupling Effects 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 32
- 210000004907 gland Anatomy 0.000 claims description 21
- 210000000078 claw Anatomy 0.000 claims description 10
- 230000008685 targeting Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims 2
- 229920001971 elastomer Polymers 0.000 abstract description 3
- 239000000806 elastomer Substances 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 230000009467 reduction Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The utility model provides a skin -friction resistance coefficient testing arrangement, is including being used for testing pressure test device, specimen clamping device, torque testing device and the power device of the normal pressure that the test piece receives, pressure test device, specimen clamping device, torque testing device and power device be fixed in total base through fixing device on, the pressure test device with total base sliding connection, power device power output shaft with torque testing device's power input rigid coupling, torque testing device power take off end with specimen clamping device's power input rigid coupling. The beneficial effects of the utility model are that: simple structure, little, with low costs, the experimental convenient operation of area, low, the experimental test piece of noise are changed simply, not only can measure solid surface but also can measure the elastomer wall, and advantages such as convenient are dismantled in the installation to green, pollution -free.
Description
Technical field
The utility model is related to a kind of skin friction resistance coefficient testing device.
Background technology
Skin friction resistance is seen everywhere in practice in daily life and engineering, people when walking, between shoes and ground
Friction can prevent people from falling down, friction now is favorable friction.But under many circumstances, mantle friction performance for not
The one side of profit, shows as frictional resistance more.Such as the frictional resistance that steamer is subject in the process of moving, the row of ship is greatly have impact on
Speed is sailed, and because the increase of resistance causes corresponding energy consumption to increase, increased the burden of environment and the energy.The friction of aircraft
Resistance accounts for the 50% of drag overall, tries to reduce skin friction resistance, not only can improve energy utilization rate, alleviating energy crisis,
And may also operate as the effect of environmental protection.Therefore, domestic and international experts and scholars have been also carried out in-depth study for drag reduction, and
And make great progress.Various Drag reduction devices are suggested and are verified, and such as Drag Reduction With Additives, Friction Reduction by Micro-bubbles, imitate
Non-smooth surface drag reduction, coating drag reduction etc. are given birth to, and part drag reduction method has also been applied.The machine of most of drag reduction method
Reason is all shape, roughness, the version etc. for changing contact surface.So grinding for drag reduction method and its effect
Study carefully the situation that can be accurately obtained skin friction resistance that is heavily dependent on, the situation of skin friction resistance is mainly by table
Face coefficient of frictional resistance seems most important characterizing using experimental rig test surfaces coefficient of frictional resistance, and traditional
The test of skin friction resistance coefficient mostly be wind-tunnel or water tunnel test.Wind-tunnel and water tunnel test, process of the test is loaded down with trivial details, and invests
It is larger, especially wind tunnel test, the power-equipment of needs and the size in air channel it is relatively all larger.Therefore invent a kind of performance to put down
Surely, cost is little and test device of convenient test has great importance.Additionally, wind tunnel test takes test site greatly, easily
By boundary effect or the unappeasable impact of border interference, support interferences and similarity criterion, reduce result of the test accuracy.
The flatness of the uniformity and the water surface that the problem that water tunnel test is present is mainly current is not easy to meet wanting for criterion measure resistance
Ask.
The content of the invention
The utility model needs particular conduit system, installing/dismounting complexity, behaviour for current skin resistance test device
Make it is loaded down with trivial details and measure it is inaccurate the problems such as, it is proposed that a kind of simple structure, floor space are little, low cost, test operation side
Just, noise is low, test test specimen changes simple, not only can measure the surface of solids and elastomer wall can be measured,
The advantages of easy installation and removal, and environmental protection, free of contamination skin friction resistance coefficient testing device.
A kind of skin friction resistance coefficient testing device described in the utility model, including for testing malleation suffered by test specimen
The pressure test device of power, specimen holder device, torsion-testing apparatus and power set, it is characterised in that：Described pressure is surveyed
Trial assembly is put, specimen holder device, torsion-testing apparatus and power set are fixed on total base by fixing device, described pressure
Force test device is slidably connected with described total base；The power output shaft of described power set and described torque measuring trial assembly
The power intake put is affixed, and the clutch end of described torsion-testing apparatus is defeated with the power of described specimen holder device
Enter and hold affixed；
Described pressure test device include supporting table, corner chassis, rotating cylinder, lower stud, test board, gland and
Upper stud, described supporting table is fixed on total base, and described corner chassis is slided with described supporting table by slide block and connected
Connect；The rotating cylinder bottom is connected with corner chassis top, and the revolving drum body sidewall is provided with for limiting test board
Along the vertical bar hole that rotating cylinder is axially moved up and down；The upper stud top is by the screwed hole on gland and gland spiral shell
Connect, revolving drum body cavity internal pressure is goed deep into tightly from the test board that vertical bar hole inserts rotating cylinder inner chamber in the lower end of the upper stud
End face；Described lower stud is spirally connected by the screwed hole that corner chassis center of top is opened with corner chassis, on the lower stud
End is against the test board lower surface for stretching into rotating cylinder inner chamber, for limiting moving radially for test board；Described test board
It is exposed at the end outside rotating cylinder and is furnished with measuring head for being pressed against test block surface and for reading measuring head stress
Strain force snesor；
Described torsion-testing apparatus include torque sensor supporting table, torque sensor, shaft coupling, connecting shaft, cylinder,
Axle for the axle triangle board support of fixed cylinder, the bearing for supporting connecting shaft and for limiting connecting shaft axial movement
Socket end lid, the bottom of described torque tester is affixed with described torque tester supporting table, described axle triangle board support
It is installed on described total bottom with described torque tester supporting table；The two ends of described torque tester are by corresponding
Elastic dowel pin shaft coupling is connected respectively with power set, connecting shaft, and wherein power set are arranged on torque tester input one
Side, connecting shaft is arranged on torque tester output end side；The other end of described connecting shaft is along cylinder axis through whole
Cylinder, and by being encapsulated in the bearings at cylinder two ends in cylinder, cylinder both ends of the surface are fixed with bearing (ball) cover；
Described power set include motor and motor supporting table, and described motor supporting table is affixed with total supporting table, institute
The motor stated is arranged on described motor supporting table, and the output shaft of described motor is by positioned at torque tester input
Elastic dowel pin shaft coupling is connected with described torque tester, and output shaft, the center of torque tester of described motor
The center overlapping of axles of the test block of axle, the central shaft of described pressure test device and specimen holder device.
The positioner for limiting slide position, described positioning are provided between described slide block and described supporting table
Device includes cuboid iron core, the coil being wrapped in outside cuboid iron core and the control for the sense of current in control coil
Circuit, the described upper and lower two-layer of supporting table point, upper strata is provided with the lower concave slide groove for coordinating with slide block, and lower floor is hollow housing,
The slot that described cuboid iron core is provided with from supporting table side is filled in lower floor's hollow housing, and described coil is along perpendicular
Nogata to being wound on cuboid iron core outside, and after coil end line is drawn by hole that hollow shell body sidewall is opened with the control of outside
Circuit is connected, and the cuboid iron core of wound around coil forms electromagnet；Slide block is that magnet is used for and electromagnet effect.
Described specimen holder device is scroll chuck, including disk body, scroll chuck gland, parcel, umbrella tooth, the first plank
Head, the second plank head and three claws, the targeting part of three claws is stuck in the corresponding radially-directed groove of disk body, and
And the targeting part of three claws is provided with the screw thread for being meshed with the flat thread of umbrella rear flank, three activities are realized
Claw is radially moved back and forth along disk body；The first described plank head is affixed with the second described plank overhead, forms rotation hand
Insert in the square hole of umbrella flank four handle, the second described plank head end.
Described test board includes the first cylinder being placed in inside rotating cylinder and falls rectangular outside rotating cylinder
Body, the first described cylinder is coaxially placed in the inner chamber of described rotating cylinder, while described cuboid passes through rotating cylinder
The vertical bar hole of right side wall, and cuboid end be equipped with measuring head, wherein described measuring head include cylindricality measuring head and
Arc measuring head.
It is furnished with the second cylinder at the top of described lower stud, the second described cylinder coaxially loads the interior of rotating cylinder
Portion and be against test board the first cylinder lower surface, the end of described lower stud is equipped with rotational pin.
What the utility model was realized in：During test, by torsion-testing apparatus the torsion suffered by test specimen can be measured
The size of square, according to the relation between moment of torsion and frictional resistance, can obtain the friction suffered by test specimen by the size of moment of torsion
The size of resistance.Pressure test device is used for testing the size of the normal pressure suffered by test specimen, according to frictional resistance, mantle friction
Relation between three physical quantitys of resistance coefficient and normal pressure, by calculating the skin friction resistance that part to be tested is obtained
The size of coefficient.
Specimen holder device adopts scroll chuck；Power set provide power using motor.Motor is fixed on motor
On support platform, torque tester is fixed in torque tester supporting table, and cylinder is fixed on axle triangle board support, and three supports
Platform is all fixed on total base, for the accuracy of test result, it is to avoid is axially misaligned and is caused measurement error larger, because
This must assure that motor, torque sensor, the axis of cylinder overlap.Torque tester side passes through spring column pin shaft coupling
Device is connected with motor, and opposite side is connected by elastic dowel pin shaft coupling and connecting shaft, and connecting shaft is by tubular axis from cylinder
Central authorities pass through, and axle is fixed in cylinder with bearings, and both sides are fixed with bearing (ball) cover, axle is entered around tubular axis
Row is rotated, without moving in the axial direction.Scroll chuck flange is fixed on the other end of axle, and scroll chuck passes through scroll chuck method
Orchid connection, scroll chuck is used for clamping test test specimen.During test, motor imparts power to whole torsion-testing apparatus, turns round
Torque test device is rotated around common axis, and test specimen rotates under the clamping of scroll chuck also with scroll chuck, now
The size of moment of torsion suffered by test specimen is then measured by torque sensor, is obtained now by the relation between moment of torsion and frictional force
The size of frictional resistance.
The horizontal direction of pressure test device test board axial direction is axial consistent with torsion-testing apparatus, whole pressure test
Device can be moved along horizontal direction, and can not be moved in vertical direction.Whole pressure test device is by propping up
Support platform and slide block are fixed on total base so as to can in the horizontal direction be moved along supporting table, therefore the length of supporting table
It must is fulfilled for the requirement length tested.Supporting table is made up of upper and lower two-layer, and supporting table lower floor is the housing of inner hollow, and iron core is
The very thin cuboid in thick middle both sides, the thin cuboid in iron core both sides is fixed in housing by the hole opened on shell wall side
Centre, coil is wound in from top to bottom iron core outside, and the end line of coil is drawn from the aperture that housing sidewall is opened, and accesses external electrical
Road, coil electricity can magnetize iron core, be passed through sense of current difference, and the magnetic pole after iron core magnetization also will be conversely, can lead to
Cross the sense of current of input coil to change the pole orientation of iron core；Supporting table upper strata is provided with trapezoidal conduit, for fixed cunning
Block makes slide block to slide along horizontal direction.Whole pressure test device is fixed together by screw with slide block, and slide block leads to
Conduit is filled at the opening for crossing conduit one end, so that pressure test device can be as slide block be together along conduit in level side
Enter line slip upwards.Slide block is by made by magnet, in test process, because pressure test device is subject to very big horizontal direction
The effect of power, to prevent it from departing from conduit in the presence of power in the horizontal direction, is magnetized iron core by being passed through electric current to coil, is made
The magnetic pole of iron core upper surface and the magnetic pole of slide block lower surface conversely, be securely seated between under the action of a magnetic force in supporting table,
It is set not to be moved in the horizontal direction.Need to remove test specimen in off-test, or needed to change examination according to test requirements document
When part, change hot-wire coil in sense of current, then now the magnetic pole of iron core upper surface then with the magnetic pole of slide block lower surface
Conversely, under the action of a magnetic force, now both show as repulsion, due to the effect of repulsion, can be very when mobile slide block
It is laborsaving, slide block is easily moved, pressure test device is made away from test specimen, easily load and unload and more so as to leave sufficiently large space
Change test specimen.Corner chassis is fixed by screws on slide block, and corner chassis crown center is provided with screwed hole, and rotating cylinder passes through spiral shell
Nail is connected with corner chassis, and lower stud top is placed in cylinder for thin cylinder, and cylinder radius are more slightly smaller than cylinder radius.With
It is thin cylinder in the test board left side of pressure test, right side is cuboid, and the right side barrel of cylinder is opened along vertical direction
If bar hole, the width of the cuboid cross section of the width ratio test board of bar hole is slightly wide, and test board is opened by cylinder upper end
Mouthful, thin column is just placed in cylinder inner radial and suffers restraints, while cuboid is just passed through the bar hole of side wall, it is whole to survey
Test plate (panel) suffers restraints in radial direction, therefore can only move up and down along cylinder.The central authorities on corner chassis are connected to lower stud, under
Stud is equipped with pin near bottom, makes lower stud by screwed hole by twisting pin, and the axis along cylinder is moved up and down, so as to band
Dynamic test board is moved up and down so as to test test specimen can be good contact.The end of cuboid is provided with strain-type pressure biography
Sensor, connects afterwards cylindricality measuring head to test the pressure size of test specimen, and strain-type pressure is also equipped with the downside of cuboid end
Sensor and arc measuring head are testing the size of the pressure of test specimen.The downside of test board is supported by lower stud, in order to anti-
Only test board is subject to the effect of power and turns on one's side, and the upper surface of test board is compressed by upper stud.Cylinder gland passes through spiral shell
Nail links together with cylinder, and cylinder gland is also provided with screwed hole along axis direction, and upper stud is then by screwed hole and cylinder
Gland is connected, and upper stud is provided with pin-and-hole near top, pin is passed through into pin-and-hole, by rotating clockwise or counterclockwise pin, Ke Yishi
Existing upper stud is moved down or upper shifting, and in test process, the lower surface of upper stud will all the time compress the upper surface of test board, make test board
Also suffer restraints going up in the axial direction, it is impossible to be moved.When regulation test board is moved up and down, while adjusting upper and lower
Stud, test board upper and lower surface is constrained without turning on one's side simultaneously.
During test, adjusting the position of pressure test device slide block makes whole pressure test device reach in the horizontal direction
Suitable position, is now passed through electric current in coil, makes the magnetic pole of magnetic pole and slide block lower surface of the upper surface of iron core conversely, root
The principle attracted each other according to synonyms pole, under the action of a magnetic force slide block tightly inhaled in supporting table, make whole pressure
Test device is fixedly secured on total base, cannot be moved so as to pressure test device suffers restraints in the horizontal direction
It is dynamic.By adjusting the stud up and down on cylinder gland and corner chassis, move up and down test board, in the vertical direction
Positioned at suitable position.Suitable position is in a vertical and horizontal direction by adjusting measuring head, and it is good with test specimen
Contact and compress test specimen.After motor operation, test specimen rotates under the drive of scroll chuck around axis, is passed by moment of torsion
Sensor can measure the size of the moment of torsion suffered by test specimen.Measuring head on test board can be with by strain pressure sensor
Measure the size of the normal pressure that test specimen is subject to.Can be table by torque according to the relation between moment of torsion and skin friction resistance
Face frictional resistance, by the relation between frictional resistance, coefficient of frictional resistance and normal pressure, by the data for measuring by pass through
It is calculated the skin friction resistance coefficient of test specimen to be measured.
The beneficial effects of the utility model are：Change traditional utilization wind-tunnel and water hole test surfaces friction coefficient
Method, overcomes wind tunnel test and takes test site greatly, invests larger, is easily subject to boundary effect or border interference, support dry
Disturb and the unappeasable impact of similarity criterion shortcoming, and the uniformity of water tunnel experiment current and the flatness of the water surface be not easy
Meet the shortcoming that criterion determines the requirement of resistance, and the size in the air channel required for wind tunnel test is larger, water tunnel experiment requires have
Higher sealing property.The utility model simple structure, whole test device only includes pressure test device and torque measuring trial assembly
Put two parts；Due to constitute test device parts size it is all relatively small, it is not necessary to pipe-line system, thus take up an area face
Product is little, can save test site, and experimentation cost is low, test operation is convenient, noise is low.Whole pressure test device passes through conduit
With the system of slide block composition, the effect of magnetic field force is make use of, according to the original that the mutually exclusive synonyms pole of magnetic pole of the same name attracts each other
Reason, not only facilitate carries out horizontal location to pressure test device, makes the handling of test test specimen, changes simple, and can be with laborsaving.No
The surface of solids can only be measured and elastomer wall can be measured, the advantages of easy installation and removal, and green ring
Protect, it is pollution-free.The high precision of strain pressure sensor and torque sensor used in test, therefore the accuracy tested
It is good, high precision.
Description of the drawings
Fig. 1 is test device flow chart of the present utility model；
Fig. 2 is structure chart of the present utility model；
Fig. 3 is pressure test device structure chart of the present utility model；
Fig. 4 is the side view of pressure test device of the present utility model；
Fig. 5 is test board drawing of the present utility model；
Fig. 6 is test board top view of the present utility model；
Fig. 7 is corner chassis of the present utility model detail drawing；
Fig. 8 is the top view on corner chassis of the present utility model；
Fig. 9 is clamping device structure chart of the present utility model；
Figure 10 is body structure figure of the present utility model；
Figure 11 is torsion-testing apparatus figure of the present utility model；
Figure 12 is power set figure of the present utility model.
Specific embodiment
The utility model is further illustrated below in conjunction with the accompanying drawings
Referring to the drawings：
Embodiment 1 combines accompanying drawing 1, a kind of skin friction resistance coefficient testing device described in the utility model, including uses
In the pressure test device 1 of normal pressure, specimen holder device 2, torsion-testing apparatus 3 and power set 4, institute suffered by test test specimen
Pressure test device 1, specimen holder device 2, torsion-testing apparatus 3 and the power set 4 stated are fixed on always by fixing device
On base 5, described pressure test device 1 is slidably connected with described total base 5；The power output of described power set 4
Axle is affixed with the power intake of described torsion-testing apparatus 3, the clutch end of described torsion-testing apparatus 3 with it is described
Specimen holder device 2 power intake it is affixed；
The composition of pressure test device 1 is illustrated with reference to accompanying drawing 2, accompanying drawing 3, accompanying drawing 4 and accompanying drawing 8.Pressure test device 1 from
On be down followed successively by upper stud 107, gland 108, the vertical rotating cylinder 109 of arrangement, test board 110, corner chassis 103, under
Stud 111, slide block 102 and supporting table 101.Supporting table 101 is connected by screw with total base 5, and the upside of supporting table 101 is provided with groove
Road, fills in conduit at the one end open that slide block 102 passes through conduit, corner chassis 103 is connected by screw with slide block 102, lower spiral shell
The screwed hole that post 111 is opened by the center of top of corner chassis 103 is connected with corner chassis 103, rotating cylinder 109 and corner bottom
Disk 103 is connected by screw, and test board 110 is placed in rotating cylinder 109, and upside is compressed by upper stud 107, upper stud 107
It is connected with gland 108 by the screwed hole on gland 108, the bottom of upper stud 107 is goed deep in the chamber of rotating cylinder 109 compressing survey
Test plate (panel) 110.Gland 108 is then attached with rotating cylinder 109 by screw.For the needs of test, whole pressure test dress
Putting should move along horizontal direction, to adjust its position in the horizontal direction, using supporting table 101 and slide block 102
The system of composition is meeting the function.Two-layer about 101 points of supporting table, lower floor is the housing of inner hollow, the side of supporting table 101
Slot is provided with, the very thin cuboid iron core 112 in both sides is filled in the hole of both sides by thick middle, by coil along vertical side
To cuboid outside is wound on, draw at the hole that coil end line is opened by housing sidewall, access external circuit, imitated by the magnetic of electric current
The iron core 112 of coiling should be magnetized, the magnetic pole of iron core 112 depends on being passed through the flow direction of electric current in coil, electric current
Flow direction is different, then the pole orientation after corresponding iron core is magnetized also conversely, according to need to change current direction during test come
To the pole orientation for meeting condition.The upside of supporting table 101 is provided with trapezoidal lower concave slide groove, for fixing slide block 102 so as to only
Can move along horizontal direction, whole pressure test device is fixed on slide block 102 by screw, slide block 102 is by conduit
Lower concave slide groove is filled at the opening of one end, pressure test device will be moved along horizontal direction under the drive of slide block 102.
Slide block 102 is by made by magnet.During test, pressure test device will be subjected to significant forces in the horizontal direction, in order to the power is put down
Weighing apparatus falls, and prevents pressure test device from departing from lower concave slide groove, and the interaction for needing slide block 102 and the iron core 112 after magnetization comes real
It is existing.It is passed through electric current in coil to be magnetized iron core 112, it is ensured that the now magnetic pole of the upper surface of iron core 112 and the following table of slide block 102
The magnetic pole in face is conversely, the principle attracted each other according to synonyms pole, slide block 102 is firmly inhaled under the action of a magnetic force to be propped up
On support platform 101, because magnetic field force is in great function so that even if the effect that test device receives horizontal force also will not be along under
Concave slide groove is moved.At the end of test, need to remove test specimen 6, or when needing to change test specimen 6 according to test requirements document,
Sense of current in by changing coil, the magnetic pole that can make coiling iron core 112 occurs reversely, now the upper surface of iron core 112
Magnetic pole it is then identical with the magnetic pole of slide block lower surface, under the action of a magnetic force, both show as repulsion, due to the work of repulsion
With, can also be very laborsaving when mobile slide block 102, slide block 102 is easily moved, pressure test device is made away from test specimen 6, from
And leave sufficiently large space and easily load and unload and change test specimen 6.Corner chassis 103 is fixed by screws on slide block 102, and four
The crown center of angle chassis 103 is provided with screwed hole, and rotating cylinder 109 is connected by screw with corner chassis 103, and lower stud 111 is pushed up
Portion is thin cylinder, and cylinder radius are more slightly smaller than cylinder radius, can be placed in rotating cylinder 109.For pressure test
The left side of test board 110 is thin cylinder, and right side is cuboid, and the right side barrel of rotating cylinder 109 is opened up along axis direction
Vertical bar hole, the width of the cuboid cross section on the right side of width ratio test board 110 of vertical bar hole is slightly wide, test board 110
By the opening of the upper end of cylinder 109, left side thin column is just placed in cylinder 109, is suffered restraints in radial direction, will not be moved
Dynamic, while the cuboid on right side is just passed through the vertical bar hole of side wall, whole test board 110 suffers restraints in radial direction, therefore
Can only move up and down along rotating cylinder 109, so just can adjust the position of the vertical direction of test board 110.Corner
Chassis 103 is connected to lower stud 111 by screwed hole, and lower stud 111 is equipped with pin, by rotational pin lower stud is made near bottom end
111 move up and down along cylinder 109, so as to drive test board 110 to move up and down, make to be located on the right side cuboid of test board 110
Cylindricality measuring head 104 with test test specimen 6 can be good contact.The end of cuboid is provided with strain pressure transducer
105, cylindricality measuring head 104 is connected afterwards to test the pressure size of test specimen, cuboid is also equipped with strain on the downside of right-hand member
Formula pressure sensor and arc measuring head 106 are testing the size of the pressure of test specimen.The lower surface of test board 110 is by lower spiral shell
Post 111 is turned on one's side supporting to prevent test board 110 to be subject to the effect of power, and the upper surface of test board 110 is by upper spiral shell
Post 107 is compressing.Cylinder gland 108 is linked together by screw with cylinder 109, and cylinder gland 108 is along axis direction
Screwed hole is provided with, upper stud 107 is then connected by screwed hole with cylinder gland 108, and upper stud 107 is provided with pin-and-hole near top,
Pin is passed through into pin-and-hole, by rotating clockwise or counterclockwise pin, it is possible to achieve upper stud 107 is moved down or upper shifting, in test process,
The lower surface of upper stud 107 will all the time compress the upper surface of test board 110.When regulation test board 110 is moved up and down, need
Upper stud 107 and lower stud 111 are adjusted simultaneously, and the upper and lower surface of test board 110 is constrained without turning on one's side simultaneously.
With reference to accompanying drawing 9, the composition of clamping device 2 is illustrated.Clamping device is scroll chuck 2.By disk body 201, three-jaw card
Disk gland 202, parcel 203, umbrella tooth 204, the first plank head 205, the second plank head 206 and claw 207.Three claws 207 are led
Have screw thread and the flat thread at the back side of umbrella tooth 204 to be meshed to below part, when with the second plank head 205 by four square holes turn
During dynamic umbrella tooth 204, the flat thread at the back side drives three claws 207 close to center or exits simultaneously, using being distributed on chuck
Three movable jaws 207 on disk body 201 move radially to clamp the test specimen of different-diameter.
The composition of torsion-testing apparatus 3 is illustrated with reference to accompanying drawing 2 and accompanying drawing 8,11.Torsion-testing apparatus 3 include torsion-testing
Device 308, connecting shaft 306, bearing (ball) cover 304, cylinder 303 and bearing 302.Torque tester 308 is by screw and torsion-testing
Device supporting table 309 is fixed together.The elastic dowel pin shaft coupling 307 that passes on left of torque tester 308 is connected with axle 306.Even
Spindle 306 is supported by cylinder 303, connecting shaft 306 along cylinder 303 axis pass through cylinder, bearing 302 from axle two
Side is enclosed within connecting shaft 306, is positioned by the shaft shoulder, then bearing (ball) cover 304 is enclosed within into connection from the both sides of connecting shaft 306
On axle 306.Sealed using sealing ring 305 between bearing (ball) cover 304 and connecting shaft 306.Simultaneously by bearing (ball) cover 302 and cylinder
It is connected with screw 301 between body 303.Cylinder 303 welds together with axle triangle board support 310, axle triangle board support 310
Then it is connected with total base 5 by screw.
The composition of power set 4 is illustrated with reference to accompanying drawing 2 and accompanying drawing 12.Power set 4 provide power, electricity using motor 401
Machine 401 is linked together by the first screw 402 with motor supporting table 403, and motor supporting table 403 passes through second with total base 5
Screw 404 is connected and fixed.
With reference to accompanying drawing 2, being connected by scroll chuck between accompanying drawing 11 and the clamping device 2 of accompanying drawing 12 and torsion-testing apparatus 3
Acting flange 8 is attached.Scroll chuck adpting flange 8 is fixed on the leftmost side of axle 306, scroll chuck adpting flange 8 and three-jaw
It is connected by screw 7 between chuck 2.Torsion-testing apparatus 3 adopt elastic dowel pin shaft coupling 9 by motor with power set 4
401 axles connect together with the right-hand axis of torque sensor 308 and carry out transmitting torque.Specimen holder device 2, torsion-testing apparatus 3 and
Power set 4 are fixed on total base 5 by respective supporting table, it is ensured that the axis of three overlaps.
During test, the slide block 102 of pressure test device 1 is adjusted, make slide block 102 away from specimen holder device 2, will be to be tested
Part 6 is fixedly clamped with scroll chuck 2.Then adjusting the position of the slide block 102 of pressure test device 1 makes whole pressure test device 1
Suitable position is reached in the horizontal direction, electric current is now passed through in coil, make the magnetic pole and cunning of the upper surface of iron core 112
The magnetic pole of the lower surface of block 102 is conversely, the principle attracted each other according to synonyms pole, under the action of a magnetic force slide block 102 is tight
Tightly inhale in supporting table 101, whole pressure test device 1 is fixedly secured on total base 5, so as to pressure test dress
Put 1 to suffer restraints in the horizontal direction and cannot be moved.It is located on cylinder gland 108 and corner chassis 103 by adjusting
Up and down stud, moves up and down test board 110, and in the vertical direction reaches suitable position, and now cylindricality measuring head 104 is perpendicular
It is in suitable position in straight and horizontal direction, and with the good contact of test specimen 6 and compresses test specimen 6.Start motor 401, examination
Part 6 rotates under the drive of scroll chuck 2 around axis, can be measured suffered by test specimen 110 by torque sensor 308
The size of moment of torsion.Cylindricality measuring head 104 on test board 110 can measure test specimen 110 by strain pressure sensor 105
The size of the normal pressure being subject to.Can be mantle friction resistance by torque according to the relation between moment of torsion and skin friction resistance
Power, by the relation between frictional resistance, coefficient of frictional resistance and normal pressure, by the data for measuring test specimen to be measured is can be calculated
6 skin friction resistance coefficient.Because pressure test device has cylindricality measuring head 104 and arc measuring head 106, therefore not only may be used
The size of the normal pressure when the surface of test specimen 6 is as arcwall face can be equally measured to measure pressure size when test specimen 6 is plane.
Content described in this specification embodiment is only enumerating for the way of realization to utility model design, and this practicality is new
The protection domain of type is not construed as being only limitted to the concrete form that embodiment is stated, protection domain of the present utility model is also wrapped
Include those skilled in the art according to the utility model design it is conceivable that equivalent technologies mean.
Claims (5)
1. a kind of skin friction resistance coefficient testing device, it is characterised in that：Including for testing the pressure of normal pressure suffered by test specimen
Force test device, specimen holder device, torsion-testing apparatus and power set, described pressure test device, specimen holder dress
Put, torsion-testing apparatus and power set are fixed on total base by fixing device, described pressure test device with it is described
Total base be slidably connected；The power output shaft of described power set is consolidated with the power intake of described torsion-testing apparatus
Connect, the clutch end of described torsion-testing apparatus is affixed with the power intake of described specimen holder device；
Described pressure test device includes supporting table, corner chassis, rotating cylinder, lower stud, test board, gland and upper spiral shell
Post, described supporting table is fixed on total base, and described corner chassis is slidably connected by slide block with described supporting table；Institute
State rotating cylinder bottom to be connected with corner chassis top, the revolving drum body sidewall is provided with for limiting test board along revolution
Drum shaft is to the vertical bar hole for moving up and down；The upper stud top is spirally connected by the screwed hole on gland and gland, described
The test board upper surface that revolving drum body cavity internal pressure tightly inserts rotating cylinder inner chamber from vertical bar hole is goed deep in the lower end of upper stud；Institute
The lower stud stated is spirally connected by the screwed hole that corner chassis center of top is opened with corner chassis, and the lower stud upper end is against
The test board lower surface of rotating cylinder inner chamber is stretched into, for limiting moving radially for test board；Described test board is exposed at revolution
It is furnished with the measuring head for being pressed against test block surface and the adaptability to changes for reading measuring head stress in end outside cylinder
Sensor；
Described torsion-testing apparatus include torque sensor supporting table, torque tester, shaft coupling, connecting shaft, cylinder, are used for
Axle triangle board support, the bearing for supporting connecting shaft and the bearing end for limiting connecting shaft axial movement of cylinder are installed
Lid, the bottom of described torque tester is affixed with described torque tester supporting table, described axle triangle board support and institute
The torque tester supporting table stated is installed on described total base, and the two ends of described torque tester pass through corresponding bullet
Property pin coupler is connected respectively with power set, connecting shaft, and wherein power set are arranged on torque tester input side,
Connecting shaft is arranged on torque tester output end side；The other end of described connecting shaft runs through whole cylinder along cylinder axis
Body, and by being encapsulated in the bearings at cylinder two ends in cylinder, cylinder both ends of the surface are fixed with bearing (ball) cover；
Described power set include motor and motor supporting table, and described motor supporting table is affixed with total supporting table, described
Motor is arranged on described motor supporting table, and the output shaft of described motor is by the elasticity positioned at torque tester input
Pin coupler is connected with described torque tester, and output shaft, the central shaft of torque tester, the institute of described motor
The center overlapping of axles of the central shaft of the pressure test device stated and the test block of specimen holder device.
2. a kind of skin friction resistance coefficient testing device as claimed in claim 1, it is characterised in that：Described slide block and institute
The positioner for limiting slide position is provided between the supporting table stated, described positioner includes cuboid iron block, twines
The coil being wound on outside cuboid iron block and the control circuit for the sense of current in control coil, in described supporting table point
Lower two-layer, upper strata is provided with the lower concave slide groove for coordinating with slide block, and lower floor is hollow housing, and described cuboid iron core is from support
The slot that platform side is provided with is filled in lower floor's hollow housing, and described coil is wound on outside cuboid iron core along vertical direction
Side, and coil end line is connected after hole that hollow shell body sidewall is opened is drawn with outside control circuit, the length of wound around coil
Cube iron core forms electromagnet；Slide block is magnet, for acting on electromagnet.
3. a kind of skin friction resistance coefficient testing device as claimed in claim 1, it is characterised in that：Described specimen holder
Device is scroll chuck, including disk body, scroll chuck gland, parcel, umbrella tooth, the first plank head, the second plank head and three
Claw, the targeting part of three claws is stuck in the corresponding radially-directed groove of disk body, and the guiding of three claws
Part is provided with the screw thread for being meshed with the flat thread of umbrella rear flank, realizes three movable jaws along disk body radially reciprocal shifting
It is dynamic；The first described plank head is affixed with the second described plank overhead, forms rotary handle, described the second plank head end
Insert in the square hole of umbrella flank four at end.
4. a kind of skin friction resistance coefficient testing device as claimed in claim 1, it is characterised in that：Described test board bag
The first cylinder being placed in inside rotating cylinder and the cuboid fallen outside rotating cylinder are included, the first described cylinder is coaxial
The inner chamber of described rotating cylinder is placed in, while vertical bar hole of the described cuboid through rotating cylinder right side wall, and
Cuboid end is equipped with measuring head, wherein described measuring head includes cylindricality measuring head and arc measuring head.
5. a kind of skin friction resistance coefficient testing device as claimed in claim 1, it is characterised in that：Described lower stud
Top is furnished with the second cylinder, and the second described cylinder coaxially loads the inside of rotating cylinder and is against the first circle of test board
The lower surface of cylinder, the end of described lower stud is equipped with rotational pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621088839.6U CN206095904U (en) | 2016-09-29 | 2016-09-29 | Skin -friction resistance coefficient testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621088839.6U CN206095904U (en) | 2016-09-29 | 2016-09-29 | Skin -friction resistance coefficient testing arrangement |
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| Publication Number | Publication Date |
|---|---|
| CN206095904U true CN206095904U (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621088839.6U Expired - Fee Related CN206095904U (en) | 2016-09-29 | 2016-09-29 | Skin -friction resistance coefficient testing arrangement |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644926A (en) * | 2016-09-29 | 2017-05-10 | 浙江工业大学 | Surface frictional resistance coefficient testing device |
| CN107218035A (en) * | 2017-06-13 | 2017-09-29 | 北京大学 | A kind of experimental provision of automatic change crack wall mill resistance and method of work and application |
| CN108731890A (en) * | 2018-04-27 | 2018-11-02 | 安徽工程大学 | Gear tooth mesh stiffness measures experimental rig and its test method |
| CN109632242A (en) * | 2018-12-17 | 2019-04-16 | 中国航天空气动力技术研究院 | Special material skin resistance measuring device in a kind of supersonic wind tunnel |
| CN111337424A (en) * | 2020-03-11 | 2020-06-26 | 中国科学院微小卫星创新研究院 | Device and method for measuring friction coefficient of lubricant |
-
2016
- 2016-09-29 CN CN201621088839.6U patent/CN206095904U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644926A (en) * | 2016-09-29 | 2017-05-10 | 浙江工业大学 | Surface frictional resistance coefficient testing device |
| CN106644926B (en) * | 2016-09-29 | 2023-10-20 | 浙江工业大学 | Surface friction resistance coefficient testing device |
| CN107218035A (en) * | 2017-06-13 | 2017-09-29 | 北京大学 | A kind of experimental provision of automatic change crack wall mill resistance and method of work and application |
| CN108731890A (en) * | 2018-04-27 | 2018-11-02 | 安徽工程大学 | Gear tooth mesh stiffness measures experimental rig and its test method |
| CN108731890B (en) * | 2018-04-27 | 2023-06-16 | 安徽工程大学 | Gear tooth meshing stiffness measurement test device and test method thereof |
| CN109632242A (en) * | 2018-12-17 | 2019-04-16 | 中国航天空气动力技术研究院 | Special material skin resistance measuring device in a kind of supersonic wind tunnel |
| CN109632242B (en) * | 2018-12-17 | 2020-11-20 | 中国航天空气动力技术研究院 | Material surface resistance measuring device in supersonic wind tunnel |
| CN111337424A (en) * | 2020-03-11 | 2020-06-26 | 中国科学院微小卫星创新研究院 | Device and method for measuring friction coefficient of lubricant |
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