CN109632628A - A kind of device and method for testing tubing coefficient of friction - Google Patents
A kind of device and method for testing tubing coefficient of friction Download PDFInfo
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- CN109632628A CN109632628A CN201811573198.7A CN201811573198A CN109632628A CN 109632628 A CN109632628 A CN 109632628A CN 201811573198 A CN201811573198 A CN 201811573198A CN 109632628 A CN109632628 A CN 109632628A
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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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Abstract
The present invention provides a kind of for testing the device of tubing coefficient of friction, the device includes testboard, first stepper motor, first fixture, second fixture, second stepper motor, photosensitive sensor, test stick and its guard block, angular transducer, first stepper motor is arranged in below the table top of testboard, the angle of the tubing to be measured on table top for being seated in the testboard, first fixture is used to fix the angle of cable under test, second fixture is used to the tubing to be measured of predetermined angular being fixed on testing stand, the second stepper motor is used to adjust the angle of the table top of testboard, the outer diameter of the experiment stick is less than the internal diameter of tubing to be measured, whether the photosensitive sensor skids off for test experience stick from tubing to be measured, the angular transducer is arranged on the table top of testboard, detect the table top of testboard Angle.By means of the invention it is possible to realize automatic measurement, and it can guarantee the accuracy and effective acquisition of measurement data.
Description
Technical field
The present invention relates to the field of test technology more particularly to a kind of device and method for testing tubing coefficient of friction.
Background technique
According to the confficient of static friction test method in tubing testing standard YD/T841.1, the confficient of static friction test of tubing
Mode is that the measured tube of length 500mm is placed on test surfaces, the bus and inclined-plane (by side) centerline parallel of measured tube
And fastened with test surfaces, standard coupon is placed in measured tube, length direction is parallel with measured tube axis, and coupon exposes measured tube
Distance be about 20mm.Inclined-plane is slowly risen with lifting device, typical rate 10mm/min, until coupon slide downward is
Only, angle is recorded, the Tan value of angle, the as confficient of static friction of tubing are calculated.So test 8 times altogether, it every time should will be by
Test tube rotates about 45 °, takes 8 arithmetic mean of instantaneous values as test result.
Existing test equipment is made of roll bar, the test surfaces of 500mm, capstan winch, gear, air-bubble level and protractor.
Equipment rotates its band moving gear, to obtain test surfaces and horizontal folder in use, manual manipulation roll bar is needed to control capstan winch
Angle.The value of the Tan of the angle is the coefficient of static friction values of tubing.
During the test, it shakes rocking bar by observation air-bubble level first and adjusts test surfaces to horizontal position, it will
Tested tubing is placed on hand steered fixation on test surfaces.Then coupon is put into tested tubing, coupon exposes the distance of measured tube
About 20mm.It slowly shakes roll bar again to make by side horizontal by existing angle, until artificial observation coupon slides.Finally read
Take the numerical value on protractor, the value of the Tan of the manual calculations angle, the confficient of static friction of as 1 time tubing.Measured tube is rotated
It about 45 °, measures again, is so repeated 8 times completion test.
The rotation angle that the existing mechanical test equipment of traditional manual can not accurately set test rate, measure sample
Degree, while the electronic document that cannot achieve test data retains.The all tester's manual operations of the operation of traditional equipment, draw
The uncertainty for having entered personnel not can guarantee repeatability, the consistency of test, and it is cumbersome cause test consume when
Between it is very long.
Summary of the invention
In view of the above problems, the confficient of static friction of tubing how is automatically carried out according to the method for YD/T841.1 standard
Test, and be problem to be solved by test result digitlization, it is said toward higher level, construction Development of intelligent laboratory is it is also proposed that understand
The certainly requirement of this problem.
The present invention can overcome the above problem or at least be partially solved the above problem.One aspect of the present invention mentions
Supply a kind of for testing the device of tubing coefficient of friction, which includes testboard, the first stepper motor, the first fixture,
Two fixtures, second stepper motor, photosensitive sensor, experiment stick and its guard block, angular transducer, first stepper motor
It is arranged in below the table top of testboard, it is described for adjusting the angle of the tubing to be measured on the table top for being seated in the testboard
First fixture is used to fix the angle of cable under test, and second fixture is used to the tubing to be measured of predetermined angular being fixed on test
On table top, the second stepper motor is used to adjust the angle of the table top of testboard, and the outer diameter of the experiment stick is less than to test tube
Whether the internal diameter of material, the photosensitive sensor skid off for test experience stick from tubing to be measured, the angular transducer setting
On the table top of testboard, the angle of the table top of testboard is detected.
Optionally, the table top of the testboard has groove, for placing cable to be measured.
Optionally, which further includes level meter, for detecting testboard table-surface level state.
Optionally, which further includes horizontal limiting stopper, is mounted on the lower section of testboard table top, the horizontal limiting stopper packet
Two positive stop ends are included, the line of two positive stop ends is in the horizontal plane of testboard table top.
Optionally, which further includes gear, and first stepper motor adjusts the angle of tubing to be measured by the gear
Degree.
Optionally, first fixture is annular, and annular annular distance is passed through for tubing to be measured.
Optionally, second fixture be electromagnet fixture comprising fixing end and electromagnet contact jaw and have one
Determine the card slot of internal diameter.
Optionally, the experiment stick and its guard block include that experiment stick, motor and line wheel, described experiment stick one end pass through
Line is associated with line wheel.
The present invention also provides a kind of tubing friction coefficient testing methods based on device noted earlier, this method comprises:
S1. testboard table top is adjusted into horizontality, and angular transducer is made to be zeroed；
S2. experiment coupon is inserted into tubing to be measured, and tests tight connection between coupon and its protective device, front end
Expose tubing predetermined length, to cover photosensitive sensor；
S3. tight connection between control experiment coupon and its protective device；
S4. by control second stepper motor, make testboard plane uniform rotation；
S5. when photosensitive sensor detects coupon slide downward, tubing angle with horizontal plane angle to be measured is recorded；
S6. step S1 is repeated, tubing to be measured is then adjusted by first stepper motor and rotates 45 degree, is repeated described
Step S2-S5 is rotated by 360 ° until tubing to be measured is accumulative.
Optionally, this method comprises:
When testboard table top is when in a horizontal state, the work of the first stepper motor, when testboard table top be not at it is horizontal
When state, the second fixture work.
The technical solution provided in the embodiment of the present application, tubing can be guaranteed by having at least the following technical effects or advantages:
It is parallel with test surfaces；It can guarantee that test surfaces uniform speed slow rotates, and the speed of rotation of controllable test surfaces；Guarantee that tubing is automatic
Accurate rotation, realizes the measurement of the coefficient of friction of the tubing within the scope of one week, and automatically records test result, and test result is quasi-
Really, the result of test is read data automatically by computer and calculated, so that data have trackability.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 shows the structure chart of the test device proposed according to the present invention；
Fig. 2 shows the gears of the first stepper motor in test device to engage figure with the gear of the first fixture；
Fig. 3 shows the main view of the first fixture；
Fig. 4 shows the top view of the first fixture；
Fig. 5 shows the structural schematic diagram of second stepper motor；
Fig. 6 shows the structural schematic diagram of the second fixture；
Fig. 7 shows the positive setting figure of testing stand；
Fig. 8 shows the setting figure at the testing stand back side.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
One aspect of the present invention, provide it is a kind of for testing the device of tubing coefficient of friction, as shown in Figure 1, the dress
It sets including testboard 1, the first stepper motor 2, the first fixture 3, the second fixture 4, second stepper motor 5, photosensitive sensor 6, reality
Stick 7 and its guard block 8, angular transducer 9 are tested, first stepper motor 2 is arranged in below the table top of testboard 1, is used for
The angle for the tubing to be measured being seated on the table top of the testboard is adjusted, first fixture 3 is for fixing cable under test
Angle, second fixture 4 are used to the tubing to be measured of predetermined angular being fixed on testing stand, the second stepper motor 5
For adjusting the angle of the table top of testboard, the outer diameter of the experiment stick 7 is less than the internal diameter of tubing to be measured, the photosensitive sensor
Whether 6 skid off for test experience stick from tubing to be measured, and the angular transducer 9 is arranged on the table top of testboard, detection
The angle of the table top of testboard.
First stepper motor is mounted on lower end on the left of test surfaces, tilts with test angle, and guarantee every group of number
After the completion of test, tubing angle will rotate 45 ° automatically.First stepper motor needs to cooperate set of gears 10, and above-mentioned first
Fixture needs to be arranged set of gears 11, and first stepper motor is assisted to drive tubing rotation.Gear is as shown in Fig. 2, work as the first step
Into when motor rotation, band moving gear rotates that top cog is driven to rotate, and can rotate to tubing.It is fixed in front of gear
Pipe clamp such as Fig. 3 shows that the slot position that the fixed device of the tubing inside for fixture is adjusted is contained in the top of fixture, with six
Angle spanner rotates slot position hole, can move down the fixed device of tubing, to fix the tubing of different model.The top view in slot position hole is such as
Shown in Fig. 4.
Gear and the first fixture are both designed as annular, if pipe length is too long, can be pierced by tubing from annular distance, due to by
Product limits till now, therefore annular distance size needs design >=160mm.
In tubing test process, need to test 8 times, rotating tubing angle every time is 45 °, in existing test equipment,
Artificial rotation tubing angle can only be leaned on, not can guarantee the accuracy of rotation, and in the present invention, it, can using the first stepper motor
Realize tubing 45 degree of accurate rotation every time.
Angular transducer is mounted on testboard table top, for recording angle when coupon sliding.When test, need to pass through
When coupon slide downward, the angular transducer record angle value is triggered, the value for calculating angle Tan obtains the static friction system of tubing
Number.
The second stepper motor is mounted on the lower section of testboard table top, adjusts test surfaces by test surfaces control arm 55
Angle, as shown in figure 5, second stepper motor assembly include motor 51, protractor 52, wheel disc 53, conveyer belt 54 constitute.Pass through
The uniform motion of second stepper motor drives table top uniform rotation by belt and horizontal by existing angle.Protractor is used for angle
It is artificial to read protractor numerical value when spending sensor degradation replacement, it is compared with the numerical value of angular transducer, checks angle sensor
Whether device proofreads success.Control test surfaces motor and test surfaces wheel disc is transmitted using the belt progress power that is connected and can be offset motor
The vibration generated when operating, the vibration that can prevent motor from generating cause test result inaccurate so that experiment stick downslide.
Provide that typical rate is 10mm/min in standard method, which should be uniform motion, and the present invention utilizes motor control
Test surfaces processed can be accurately realized the test surfaces of the control equipment according to the rate in standard at the uniform velocity.
Second fixture is preferably electromagnet fixture comprising fixing end and electromagnet contact jaw and strip, strip
The upper card slot with certain internal diameter.Artificial fixed tubing mode when middle testing stand rises compared with the prior art, not only not
It needs artificially to participate in, and vibration or mobile is less likely to occur tubing, ensure that the accuracy of measurement result.Above-mentioned first card
One end of testboard table top is arranged in tool, and the place on testboard table top far from the first fixture, institute is arranged in second fixture
The second fixture is stated as shown in fig. 6, being fixedly connected on the upside of one end and testing stand, the downside on the other end and testing stand is living
Dynamic connection, the preferred electromagnet connection of the mode of flexible connection, certainly can also be by other means.Have among second fixture
Slot, for fixing tubing to be measured.Second fixture can treat test tube material and realize that both ends are fixed, to keep tubing complete with test surfaces
Contact, to guarantee that tubing is parallel with test surfaces, to guarantee that test result is accurate.
Photosensitive sensor is mounted on the right side of test plane plate, protrudes 20mm to the right on panel.The sensor is for supervising
Control experiment stick whether slide downward, as a kind of specific embodiment, photo resistance is may be selected in photosensitive sensor.
Experiment stick and its guard block are mounted on the right of photosensitive sensor, and specific test bar and its guard block can be by realities
It tests stick and can protect the protection coupon hook composition of experiment stick.Coupon hook is protected, is made of small machine and line wheel.Coupon is protected
Protection unit wants that coupon cord can be tightened during installation, and when preventing on-test, all parts are from static to the wink to start running
Between the vibration that generates so that coupon slides the erroneous judgement for leading to result.But after experiment starts, need to guarantee that the cord for testing stick is in
Relaxed state.After ordinary test starts, coupon protective device rotates 180 ° counterclockwise, and the cord of coupon is adjusted to loosen shape
State, if, when test surfaces and horizontal presentation angle, cord protective device can draw examination because coupon is in tensioned state
Stick can not make coupon free-falling, cause result inaccurate.Experiment stick guard block can be realized the protection to experiment stick, keep away
Exempt from situation of colliding with, increases the service life of experiment stick.
Testboard is the main body of test equipment, and as shown in Figure 7,8, testboard table top needs to be formed with groove, prevents tubing from putting
Double swerve when setting in the plane can not be fixed.Need to reserve the installation slot position of above-mentioned each component on table top.Silicon is configured in groove
Rubber mat influences test result for offsetting the vibration generated between all parts.Some components are directly anchored to testing stand
On, or, one end of the gear protective cover setting testing stand of first stepper motor integrated with testing stand, Protection stick
Hook is arranged in the other end.
The device may also include test platform as a preferred method, and test platform is arranged below testboard table top,
Tester is facilitated to prevent sample too long the operation of equipment, since tubing and ground face contact limit when adjusting test surfaces angle
It can not continue to adjust the angle.
The device further includes having data-interface as a preferred implementation manner, and the interface is for making the device and calculating
Machine, laptop or other data processings/display equipment are connected, and control equipment by computer program and are operated,
And the original record of test result can be calculated automatically and be stored in data processing equipment or display equipment.
The device further includes level meter as a preferred implementation manner, for detecting testboard table-surface level state.It can
So that air-bubble level, air-bubble level is mounted on test surfaces surface plate.Can determine whether test surfaces are horizontal, if system
Original state test surfaces are that can calibrate to angular transducer on horizontal position.
As another preferred embodiment, which further includes horizontal limiting stopper, is mounted on the lower section of testboard table top,
The horizontal limiting stopper includes two positive stop ends, and the line of two positive stop ends is in the horizontal plane of testboard table top, level limit
Position device can have indicator light, have contact point on each positive stop end, and when test panel touches two contact points, indicator light is bright
It rises, indicates that testboard table top is in horizontality.If test panel only touches any one contact point, indicator light extinguishes, table
Show that testboard table top is in angled state.Utilize the horizontal limiting stopper, when can be avoided angular transducer damage, electromagnet
(the second fixture is electromagnet fixture) works at the same time with the first stepper motor, avoids equipment damage.
The present invention also provides a kind of tubing friction coefficient testing methods based on device noted earlier, this method comprises:
S1. testboard table top is adjusted into horizontality, and angular transducer is made to be zeroed；
S2. experiment coupon is inserted into tubing to be measured, and tests tight connection between coupon and its protective device, front end
Expose tubing predetermined length, to cover photosensitive sensor；
S3. tight connection between control experiment coupon and its protective device；
S4. by control second stepper motor, make testboard plane uniform rotation；
S5. when photosensitive sensor detects coupon slide downward, tubing angle with horizontal plane angle to be measured is recorded；
S6. step S1 is repeated, tubing to be measured is then adjusted by first stepper motor and rotates 45 degree, is repeated described
Step S2-S5 is rotated by 360 ° until tubing to be measured is accumulative.
In the present invention, detect that coupon slides based on photosensitive sensor, angular transducer automatically records testboard at that time
The angle in face and horizontal plane, compared with the prior art in artificial reading and manual calculations obtain a result, precision of the present invention it is high and
And it can be realized intelligence.Detect that coupon slides based on photosensitive sensor, testing stand stops further inclination, and the present invention is read
Number precision is high, it is entirely avoided artificial error in reading and calculating mistake, to guarantee the accuracy of test result.
In step s 4, when testboard table top is not at horizontality, the second fixture work, i.e. second fixture
Angular transducer not 0 °, the contact of any one limiter and indicator light off three conditions meet when just work.In step
In S6, just work under conditions of angular transducer is zeroed, both ends limiter contacts, indicator light lights, the first stepping
Motor just works, and tubing to be measured is made to rotate one 45 ° of angle.By above-mentioned technological means, the first stepper motor and the second card
Tool do not work at the same time, the present invention can intelligently realize the rotation of tubing, but can fix during the test well to
Test tube material.Working principle of the angular adjustment stepper motor (the first stepper motor) between assembly and electromagnet clamp device needs three
Can just work when a condition is all satisfied, first condition is whether angular transducer is zeroed, second condition be both ends limiter whether
It contacts, when the equal engaged test platform table top angle board of both ends limiter, then indicator light is bright, if any end limiter contacts
When testboard table top angle board, then indicator light extinguishes；If angular transducer is zeroed, both ends limiter is contacted, and indicator light is bright,
Then the first stepper motor works, and tubing is made to rotate 45 degree, if fruit angular transducer non-zero, the contact of any end limiter refers to
Show that lamp goes out, then the first stepper motor does not work, work of electromagnet, makes the second fixture clamping tubing to be measured.
As another specific embodiment, test method includes the following steps:
By test plane plate modulation level, until indicator light lights；Check air-bubble level whether modulation level, angle pass
Whether sensor numerical value is zeroed.
By tubing from, across being placed on test plane plate groove, right end, which is used, has magnet in angular adjustment stepper motor ring
Second fixture of property blocks tubing.Left end adjusts pipe clamp groove, and fixing device with tubing, that tubing is fixed on test is flat
On panel.
Coupon is placed in sample tubing, 20mm or so is exposed in front end, covers photosensitive sensor, triggers photosensitive biography
Sense device working.Test experiments nose is set in the line wheel of protection coupon with cord wound clockwise.
The motor of protection coupon rotates 180 ° counterclockwise, it is ensured that the cord of coupon is loosening state, by controlling test surfaces
Stepper motor at the uniform velocity controls test plane plate, makes it horizontal by existing angle.Coupon slide downward is perceived in photosensitive sensor
When, control test surfaces stepper motor stops working.Angular transducer records tubing angle with horizontal plane angle at this time.By with survey
The PC machine that connection is set in trial assembly calculates the value of angle Tan, to obtain a coefficient of static friction values of tubing, and automatically records this
Numerical value.
Test surfaces stepper motor re-modulates test plane plate horizontal after the test, passes through angular adjustment stepper motor
Tubing is rotated 45 ° by assembly, and the small machine in coupon protective device drives line wheel to rotate clockwise, and coupon is drawn again and sets tubing
Port and trigger photo resistance work after, small machine stops operating.Repeat above-mentioned test procedure.It is complete until rotation 7 times after 45 degree
Whole test process.
The present invention can guarantee that tubing is parallel with test surfaces by above embodiment；It can guarantee that test surfaces are at the uniform velocity slow
Slow rotation, and the speed of rotation of controllable test surfaces；Guarantee the rotation of tubing automatic and accurate, realizes rubbing for the tubing within the scope of one week
The measurement of coefficient is wiped, and automatically records test result, test result is accurate, and the result of test reads data by computer automatically
And calculate, so that data have trackability.
The present invention substitutes whole manual operations using motor and sensor, realizes being performed fully automatic for test.It prevents artificial
The condition for operating the influence experimental result introduced, avoids being unable to reach testing standard permissible accuracy.
The present invention only needs for spool to be measured to be placed on testboard, can be automatically performed entire test process, and test is quasi-
Really and efficiently, and the test device can directly be docked with the test data system of Development of intelligent laboratory.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be practiced without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of the various inventive aspects,
Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention: i.e. required to protect
Shield the present invention claims features more more than feature expressly recited in each claim.More precisely, as following
Claims reflect as, inventive aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, wherein each claim itself
All as a separate embodiment of the present invention.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and ability
Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between parentheses should not be configured to limitations on claims.
Claims (10)
1. a kind of for testing the device of tubing coefficient of friction, which is characterized in that the device includes testboard, the first stepping electricity
Machine, the first fixture, the second fixture, second stepper motor, photosensitive sensor, experiment stick and its guard block, angular transducer, institute
The first stepper motor is stated to be arranged in below the table top of testboard, for adjust on the table top for being seated in the testboard to test tube
The angle of material, first fixture are used to fix the angle of cable under test, and second fixture is used for the to be measured of predetermined angular
Tubing is fixed on testing stand, and the second stepper motor is used to adjust the angle of the table top of testboard, the experiment stick
Outer diameter is less than the internal diameter of tubing to be measured, and whether the photosensitive sensor skids off for test experience stick from tubing to be measured, described
Angular transducer is arranged on the table top of testboard, detects the angle of the table top of testboard.
2. the apparatus according to claim 1, it is further characterized in that, the table top of the testboard has groove, for placing
Cable to be measured.
3. device according to claim 1 or 2, it is further characterized in that, which further includes level meter, for detecting test
Platform table-surface level state.
4. device according to claim 1-3, it is further characterized in that, which further includes horizontal limiting stopper, peace
Mounted in the lower section of testboard table top, the horizontal limiting stopper includes two positive stop ends, and the line of two positive stop ends is in testboard
The horizontal plane of table top.
5. device according to claim 1-3, it is further characterized in that, which further includes gear, and described first
Stepper motor adjusts the angle of tubing to be measured by the gear.
6. device according to claim 1-5, it is further characterized in that, first fixture is annular, annular
Annular distance is passed through for tubing to be measured.
7. device according to claim 1-6, it is further characterized in that, second fixture is electromagnet fixture,
It includes fixing end and electromagnet contact jaw and the card slot with certain internal diameter.
8. device according to claim 1-7, it is further characterized in that, the experiment stick and its guard block include
Stick, motor and line wheel are tested, described experiment stick one end is associated with by line with line wheel.
9. the tubing friction coefficient testing method based on the described in any item devices of claim 1-8, which is characterized in that this method
Include:
S1. testboard table top is adjusted into horizontality, and angular transducer is made to be zeroed；
S2. experiment coupon is inserted into tubing to be measured, and tests tight connection between coupon and its protective device, front end is exposed
Tubing predetermined length, to cover photosensitive sensor；
S3. tight connection between control experiment coupon and its protective device；
S4. by control second stepper motor, make testboard plane uniform rotation；
S5. when photosensitive sensor detects coupon slide downward, tubing angle with horizontal plane angle to be measured is recorded；
S5. step S1 is repeated, tubing to be measured is then adjusted by first stepper motor and rotates 45 degree, repeats the step
S2-S5 is rotated by 360 ° until tubing to be measured is accumulative.
10. tubing friction coefficient testing method according to claim 9, it is further characterized in that, this method comprises:
When testboard table top is when in a horizontal state, the first stepper motor works, when testboard table top is not at horizontality,
The second fixture work.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811573198.7A CN109632628A (en) | 2018-12-21 | 2018-12-21 | A kind of device and method for testing tubing coefficient of friction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811573198.7A CN109632628A (en) | 2018-12-21 | 2018-12-21 | A kind of device and method for testing tubing coefficient of friction |
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| CN201811573198.7A Pending CN109632628A (en) | 2018-12-21 | 2018-12-21 | A kind of device and method for testing tubing coefficient of friction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411939A (en) * | 2019-07-25 | 2019-11-05 | 北京建筑材料检验研究院有限公司 | A kind of pipeline confficient of static friction test device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007292587A (en) * | 2006-04-25 | 2007-11-08 | Yokohama Rubber Co Ltd:The | Friction testing machine |
| CN205192900U (en) * | 2015-12-15 | 2016-04-27 | 贵州美嘉塑胶有限公司 | Plastic conduit wear resistance testing arrangement |
| CN206038499U (en) * | 2016-08-05 | 2017-03-22 | 吴江佳通光缆有限公司 | Silicon -core tube inner wall frictional coefficient measuring device |
| CN206523417U (en) * | 2017-03-09 | 2017-09-26 | 广东华路交通科技有限公司 | A kind of automatic precision static friction coefficient of communication pipeline tester |
| CN208155824U (en) * | 2018-05-22 | 2018-11-27 | 广东交科检测有限公司 | A kind of full-automatic accurate static friction coefficient of communication pipeline tester |
| CN210108922U (en) * | 2018-12-21 | 2020-02-21 | 中国信息通信研究院 | Device for testing friction coefficient of pipe |
-
2018
- 2018-12-21 CN CN201811573198.7A patent/CN109632628A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007292587A (en) * | 2006-04-25 | 2007-11-08 | Yokohama Rubber Co Ltd:The | Friction testing machine |
| CN205192900U (en) * | 2015-12-15 | 2016-04-27 | 贵州美嘉塑胶有限公司 | Plastic conduit wear resistance testing arrangement |
| CN206038499U (en) * | 2016-08-05 | 2017-03-22 | 吴江佳通光缆有限公司 | Silicon -core tube inner wall frictional coefficient measuring device |
| CN206523417U (en) * | 2017-03-09 | 2017-09-26 | 广东华路交通科技有限公司 | A kind of automatic precision static friction coefficient of communication pipeline tester |
| CN208155824U (en) * | 2018-05-22 | 2018-11-27 | 广东交科检测有限公司 | A kind of full-automatic accurate static friction coefficient of communication pipeline tester |
| CN210108922U (en) * | 2018-12-21 | 2020-02-21 | 中国信息通信研究院 | Device for testing friction coefficient of pipe |
Non-Patent Citations (1)
| Title |
|---|
| DEJIDAS, L.P. 等: "《YD/T 841.1-2016 地下通信管道用塑料管 第1部分：总则》", vol. 1, 31 October 2008, 印刷工业出版社, pages: 381 - 382 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411939A (en) * | 2019-07-25 | 2019-11-05 | 北京建筑材料检验研究院有限公司 | A kind of pipeline confficient of static friction test device and method |
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