CN107561002A - The measurement apparatus of plate coefficient of friction - Google Patents
The measurement apparatus of plate coefficient of friction Download PDFInfo
- Publication number
- CN107561002A CN107561002A CN201710589440.9A CN201710589440A CN107561002A CN 107561002 A CN107561002 A CN 107561002A CN 201710589440 A CN201710589440 A CN 201710589440A CN 107561002 A CN107561002 A CN 107561002A
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- China
- Prior art keywords
- plate
- driving cylinder
- pedestal
- guide rail
- cylinder
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Abstract
The invention discloses a kind of measurement apparatus of plate coefficient of friction, including pedestal, plate and protractor, the first driving cylinder is provided with the top of the pedestal, the cylinder body portion of first driving cylinder is fixedly connected with the pedestal, the cylinder rod portion of first driving cylinder is connected with the first sucker, support frame is provided with the top of the pedestal, the other end of support frame as described above is connected with laser induced switch, the laser induced switch is electrically connected with the controller that can receive the laser induced switch output signal, the controller electrically connects with first driving cylinder, to control the motion of first driving cylinder to stop after laser induced switch is triggered by the standard slider.The present invention can effectively improve plate friction coefficient measurement process operating efficiency.
Description
Technical field
The invention belongs to teaching aid technical field, and in particular to a kind of measurement apparatus of plate coefficient of friction.
Background technology
Coefficient of friction (μ) refers to the ratio of the frictional force and the vertical force acted in surface thereof between two surfaces, and it is
It is relevant with the roughness on surface, and it is unrelated with the size of contact area.
By the measuring method for collecting and surveying conventional coefficient of friction, it has been found that it has triviality, i.e., conventional friction
Often efficiency is low in experimentation for the measuring method and measurement apparatus of coefficient.
The content of the invention
The present invention proposes a kind of energy for the low technical problem of the measuring method operating efficiency of existing plate coefficient of friction
Enough effectively improve the measurement apparatus of the plate coefficient of friction of plate friction coefficient measurement process operating efficiency.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of measurement apparatus of plate coefficient of friction, including pedestal, plate and protractor, the top of the pedestal is level
Face, the plate are arranged at the top of the pedestal, and the plate is inclined upwardly setting from the pedestal, the end of the plate
It is hinged with the top of the pedestal, the protractor is semicircle, and the protractor is vertically set, the protractor
Arc end is face-up, and the bottom of the protractor is bonded and is fixedly connected with the top of the pedestal, the center of circle of the protractor
To be overlapped with the center of rotation of the plate and the pedestal hinged place, the plate face of the protractor is vertical with the plate, institute
State and standard slider is placed with the upper face of plate, the standard slider is located at the plate along inclined direction and away from the amount
The end of angle device, the bottom of the standard slider are bonded with the plate face of the plate, and the first drive is provided with the top of the pedestal
Dynamic cylinder, first driving cylinder are vertically set, and the cylinder body portion of first driving cylinder is fixedly connected with the pedestal, institute
The cylinder rod portion for stating the first driving cylinder is connected with the first sucker, one end of first sucker and the cylinder rod portion of first driving cylinder
Be hinged, the other end of first sucker adsorbs with the plate face of the plate；Support frame is provided with the top of the pedestal, it is described
Support frame is vertically set, one end of support frame as described above with being fixedly connected at the top of the pedestal, support frame as described above it is another
One end is connected with laser induced switch, and the laser induced switch is fixedly connected with support frame as described above, the laser induced switch
Positioned at the top of the plate and the standard slider, the laser induced switch is vertical with the plate face of the plate, described to swash
Light sensation inductive switch corresponds to the standard slider and set along the plate incline direction and close to the end face of the protractor, so that
The laser beam sent and the standard slider end face are tangent；It is described it is laser induced switch be electrically connected with can receive it is described laser induced
The controller of switch output signal, the controller electrically connect with first driving cylinder, with when it is laser induced switch it is described
The motion of first driving cylinder is controlled to stop after standard slider triggering.
Preferably, the first sucker posture can be limited by being connected between first sucker and first driving cylinder
The first torque spring, first torque spring is fixedly installed on the be hinged of first sucker and first driving cylinder
Place.
Preferably, the second driving cylinder is provided between first driving cylinder and the protractor, second driving
Cylinder is vertically set, and the cylinder body portion of second driving cylinder is arranged on the pedestal, the cylinder rod of second driving cylinder
Portion is connected with the second sucker, and one end of second sucker and the cylinder rod portion of second driving cylinder are hinged, second sucker
The plate face of the other end and the plate adsorb, the controller electrically connects with second driving cylinder, to control described second
The power output of driving cylinder clutch end.
Preferably, opening up fluted at the top of the pedestal, the groove is horizontally extending, the bottom of the groove
Portion is fixedly installed guide rail, and the guide rail is horizontally disposed, and being connected with the top of the guide rail can be along the guide rail straight line
Reciprocating sliding block, the overhead height of the sliding block less than the height at the top of the pedestal, the top of the sliding block with it is described
The cylinder body portion of second driving cylinder is fixedly connected, and the sliding block is connected with the actuator that can drive the sliding block linear reciprocating motion,
The controller electrically connects with the actuator, to control the power output of the actuator clutch end.
Preferably, the guide rail is linear slide cylinder guide rail, the guide rail is slidably connected with the sliding block, the drive
Moving part is air pump, and the actuator is connected with the guide rail by gas circuit.
Preferably, the guide rail is linear slide oil cylinder guide rail, the guide rail is slidably connected with the sliding block, the drive
Moving part is hydraulic pump, and the actuator is connected with the guide rail by oil circuit.
Preferably, the guide rail is ball-screw guide rail, the guide rail is connected with the sliding block by lead screw pair, described
Actuator is motor, and the clutch end of the actuator is fixedly connected with the leading screw portion of the guide rail.
Preferably, the actuator is servomotor or stepper motor.
Preferably, the second sucker posture can be limited by being connected between second sucker and second driving cylinder
The second torque spring, second torque spring is fixedly installed on the be hinged of second sucker and second driving cylinder
Place.
Preferably, first driving cylinder is cylinder or hydraulic cylinder.
Present invention has the advantages that:
The measurement apparatus of plate coefficient of friction of the present invention is by setting the first driving cylinder, the first sucker, laser induced switch
And controller, on the one hand realize the plate in measurement process with the top of the pedestal between angle automatically adjust, with
And realize automatic connection between first driving cylinder and the plate, that is, improve to the plate friction coefficient measurement
Automaticity, on the other hand, improve the standard slider relative to the plate move after, first driving cylinder
Response speed, so as to improve the accuracy to angle measurement between the plate and pedestal top；Therefore plate of the present invention
The measurement apparatus of coefficient of friction can effectively improve the operating efficiency of plate friction coefficient measurement process.
Brief description of the drawings
The content expressed by this specification accompanying drawing and the mark in figure are briefly described below：
Fig. 1 is the overall structure diagram of the embodiment of the present invention；
Fig. 2 is the partial enlargement structural representation of part A in Fig. 1；
Fig. 3 is the partial enlargement structural representation of part B in Fig. 1；
Fig. 4 is the overlooking the structure diagram of pedestal in the embodiment of the present invention；
1, pedestal in figure；2nd, plate；3rd, protractor；4th, the first driving cylinder；5th, the first sucker；6th, support frame；7th, laser sense
Inductive switch；8th, standard slider；9th, the second driving cylinder；10th, the second sucker；11st, guide rail；12nd, sliding block；13rd, actuator.
Embodiment
Below against accompanying drawing, by the description to embodiment, for example involved each component of embodiment of the invention
Shape, construction, the mutual alignment and annexation between each several part, the effect of each several part and operation principle, manufacturing process and
Operate with method etc., is described in further detail, to help those skilled in the art to inventive concept of the invention, technology
Scheme has more complete, accurate and deep understanding.
In the description of the invention, it is necessary to explanation, term " interior ", " outer ", " on ", " under ", " level side ", " vertically
The orientation or position relationship of the instructions such as direction " are position relationship shown in based on accompanying drawing 1, be for only for ease of the description present invention and
Simplify description, rather than the device or element of instruction or hint meaning there must be specific orientation, with specific azimuth configuration
And operation, therefore be not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd " are only used for describing mesh
, and it is not intended that instruction or hint relative importance.
Referring to Fig. 1 and Fig. 2, Fig. 1 is the overall structure diagram of the embodiment of the present invention, and Fig. 2 is the part of part A in Fig. 1
Mplifying structure schematic diagram.As depicted in figs. 1 and 2, a kind of measurement apparatus of plate coefficient of friction, including pedestal 1, plate 2 and amount
Angle device 3, the top of the pedestal 1 (extend, and vertical with vertical direction shown in Fig. 1 for horizontal plane along horizontal direction shown in Fig. 1
Plane), the plate 2 is arranged at the top of the pedestal 1, and the plate 2 is inclined upwardly setting from the pedestal 1, described
The end of plate 2 and the top of the pedestal 1 are hinged, and the protractor 3 is semicircle, and the protractor 3 is vertically set
Put, the arc end of the protractor 3 is face-up, and the bottom of the protractor 3 is bonded with the top of the pedestal 1 and fixed company
Connect, the center of circle of the protractor 3 is overlaps with the center of rotation of the plate 2 and the hinged place of the pedestal 1, the protractor 3
Plate face it is vertical with the plate 2, the protractor 3 is used to measure the folder between the plate face of blackboard eraser 2 and the top of the pedestal 1
Angle；Be placed with standard slider 8 on the upper face of the plate 2, the standard slider 8 be located at the plate 2 along inclined direction and
End away from the protractor 3, the bottom of the standard slider 8 are bonded with the plate face of the plate 2, the standard slider 8
For as the object of reference for measuring the coefficient of friction of plate 2；
Further as depicted in figs. 1 and 2, the top of the pedestal 1 is provided with the first driving cylinder 4, first driving cylinder 4
Vertically set, the cylinder body portion of first driving cylinder 4 is fixedly connected with the pedestal 1, the cylinder of first driving cylinder 4
Bar portion is connected with the first sucker 5, and one end of first sucker 5 and the cylinder rod portion of first driving cylinder 4 are hinged, and described first
The plate face of the other end of sucker 5 and the plate 2 is adsorbed, and the one side of the first sucker 5 is easy to first driving cylinder 4 and institute
State being detachably connected between plate 2, and then be advantageous to the replacing to the plate 2, on the other hand by with the plate 2
Plate face air adsorption, the plate 2 can be avoided to sustain damage, while ensure that stabilization of the plate 2 in measurement process
Property；
Further as depicted in figs. 1 and 2, the top of the pedestal 1 is provided with support frame 6, and support frame as described above 6 is along vertical side
To setting, one end of support frame as described above 6 is fixedly connected with the top of the pedestal 1, and the other end of support frame as described above 6 is connected with sharp
Light sensation inductive switch 7, the laser induced switch 7 are fixedly connected with support frame as described above 6, and the laser induced switch 7 is positioned at described
The top of plate 2 and the standard slider 8,7, the laser senses vertical with the plate face of the plate 2 of the laser induced switch
Inductive switch 7 corresponds to the standard slider 8 and set along the incline direction of plate 2 and close to the end face of the protractor 3, so that
The laser beam sent and the end face of standard slider 8 are tangent, and the laser induced switch 7 is used for relatively described in the plate 2
During pedestal 1 rotates, constantly monitor whether the standard slider 8 moves relative to the plate 2；
Further as depicted in figs. 1 and 2, the laser induced switch 7, which is electrically connected with, can receive the laser induced switch 7
The controller of output signal, the controller electrically connect with first driving cylinder 4, with when laser induced switch 7 is by the mark
Quasi- sliding block 8 controls the motion of first driving cylinder 4 to stop after triggering, and the controller can improve the phase of standard slider 8
After being moved for the plate 2, the response speed of first driving cylinder 4, and then improve to the plate 2 and the pedestal 1
The accuracy that angle measures between top.
The measurement apparatus of plate coefficient of friction of the present invention is by setting the first driving cylinder 4, the first sucker 5, laser induced opening
Pass and controller, on the one hand realize the automatic tune of the plate 2 angle between the top of pedestal 1 in measurement process
Section, and realize the automatic connection between first driving cylinder 4 and the plate 2, that is, improve and the plate 2 is rubbed
The automaticity of coefficient measurement, on the other hand, improve after the standard slider 8 moves relative to the plate 2, described the
The response speed of one driving cylinder 4, so as to improve the accuracy to angle measurement between the plate 2 and the top of the pedestal 1；Cause
The measurement apparatus of this plate coefficient of friction of the present invention can effectively improve the operating efficiency of plate friction coefficient measurement process.
Further, in order to ensure the efficiency connected between first sucker 5 and the plate 2, first sucker 5 with
The first torque spring of the posture of the first sucker 5 can be limited by being connected between first driving cylinder 4, the first torsion bullet
Spring is fixedly installed on the hinged place of first sucker 5 and first driving cylinder 4, and the present invention is by setting first torsion
Spring can keep the posture of first sucker 5, so that first sucker 5 is all the time towards the plate 2, so as to keep away
Exempt from first sucker 5 needs hand because being deflected during being adsorbed with the plate 2 on first driving cylinder 4
The phenomenon of dynamic regulation occurs, and then can effectively ensure that the efficiency connected between first sucker 5 and the plate 2, and then
Improve the operating efficiency during plate friction coefficient measurement.
Referring to Fig. 3, Fig. 3 is the partial enlargement structural representation of part B in Fig. 1.As shown in Figure 1 to Figure 3, described first drive
Dynamic that the second driving cylinder 9 is provided between cylinder 4 and the protractor 3, second driving cylinder 9 is vertically set, and described the
The cylinder body portion of two driving cylinders 9 is arranged on the pedestal 1, and the cylinder rod portion of second driving cylinder 9 is connected with the second sucker 10, institute
The one end and the cylinder rod portion of second driving cylinder 9 for stating the second sucker 10 are hinged, the other end of second sucker 10 with it is described
The plate face absorption of plate 2, the controller electrically connects with second driving cylinder 9, to control the power of the second driving cylinder 9 defeated
Go out the power output at end, the present invention is realized and coordinated with first driving cylinder 4 to the plate by setting the second driving cylinder 9
Angle is adjusted between part 2 and the top of the pedestal 1, so as on the one hand improve the friction coefficient measurement mistake of plate 2
The stability moved in journey, angular adjustment is accurate between on the other hand can effectively improving at the top of plate 2 and the pedestal 1
Degree.
Referring to Fig. 4, Fig. 4 is the overlooking the structure diagram of pedestal in the embodiment of the present invention.As shown in Figures 1 to 4, the base
The top of seat 1 opens up fluted, and the groove is horizontally extending, and the bottom of the groove is fixedly installed guide rail 11, institute
State that guide rail 11 is horizontally disposed, the top of the guide rail 11 is connected with can be along the sliding block of the guide rail straight reciprocating motion
12, less than the height at the top of pedestal 1, the top of the sliding block 12 drives the overhead height of the sliding block 12 with described second
The cylinder body portion of cylinder 9 is fixedly connected, and the sliding block 12 is connected with the actuator that can drive the linear reciprocating motion of sliding block 12, described
Controller electrically connects with the actuator 13, to control the power output of the clutch end of actuator 13.The present invention passes through
The guide rail 11 is set, the regulation to second driving cylinder 9 position in the horizontal direction can be realized, that is, realized to described second
The regulation of distance between driving cylinder 9 and first driving cylinder 4, so as to suitable for being rubbed to the various sizes of plate 2
The measurement operation of coefficient is wiped, and then improves versatility.
For the structure of above-mentioned guide rail, concretely：As shown in Figure 1 and Figure 4, the guide rail 11 is ball-screw guide rail,
The guide rail 11 is connected with the sliding block 12 by lead screw pair, and the actuator 13 is motor, and the power of the actuator 13 is defeated
Go out end to be fixedly connected with the leading screw portion of the guide rail 11.
In addition, the structure of the guide rail 11 can also be：The guide rail 11 is linear slide cylinder guide rail, the guide rail 11
It is slidably connected with the sliding block 12, the actuator 13 is air pump, and the actuator 13 is connected with the guide rail 11 by gas circuit.
In addition, the structure of the guide rail 11 can also be：The guide rail 11 is linear slide oil cylinder guide rail, the guide rail 11
It is slidably connected with the sliding block 12, the actuator 13 is hydraulic pump, and the actuator 13 is connected with the guide rail 11 by oil circuit
Connect.
As preferable, the actuator 13 is servomotor or stepper motor.
As preferable, described second can be limited by, which being connected between second sucker 10 and second driving cylinder 9, inhales
Second torque spring of the posture of disk 10, second torque spring are fixedly installed on second sucker 10 and the described second driving
The hinged place of cylinder 9.
In addition, first driving cylinder 4 is cylinder or hydraulic cylinder.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that present invention specific implementation is not by aforesaid way
Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is employed, or without changing
Enter and the design of the present invention and technical scheme are directly applied into other occasions, within protection scope of the present invention.This hair
Bright protection domain should be determined by the scope of protection defined in the claims.
Claims (10)
1. a kind of measurement apparatus of plate coefficient of friction, including pedestal (1), plate (2) and protractor (3), the pedestal (1)
Top is horizontal plane, and the plate (2) is arranged at the top of the pedestal (1), and the plate (2) is upward from the pedestal (1)
It is obliquely installed, the end and the top of the pedestal (1) of the plate (2) are hinged, and the protractor (3) is semicircle, described
Protractor (3) is vertically set, and the arc end of the protractor (3) is face-up, the bottom of the protractor (3) with it is described
The top fitting of pedestal (1) and it is fixedly connected, the center of circle of the protractor (3) is and the plate (2) and the pedestal (1) hinge
The center of rotation for meeting place overlaps, and the plate face of the protractor (3) is vertical with the plate (2), on the upper face of the plate (2)
Standard slider (8) is placed with, the standard slider (8) is located at the plate (2) along inclined direction and away from the protractor (3)
End, the bottom of the standard slider (8) is bonded with the plate face of the plate (2), it is characterised in that：
The first driving cylinder (4) is provided with the top of the pedestal (1), first driving cylinder (4) is vertically set, described
The cylinder body portion of first driving cylinder (4) is fixedly connected with the pedestal (1), and the cylinder rod portion of first driving cylinder (4) is connected with
One sucker (5), one end of first sucker (5) and the cylinder rod portion of first driving cylinder (4) are hinged, first sucker
(5) plate face of the other end and the plate (2) is adsorbed；
Support frame (6) is provided with the top of the pedestal (1), support frame as described above (6) is vertically set, support frame as described above
(6) with being fixedly connected at the top of the pedestal (1), the other end of support frame as described above (6) is connected with laser induced switch for one end
(7), the laser induced switch (7) is fixedly connected with support frame as described above (6), and the laser induced switch (7) is located at the plate
The top of part (2) and the standard slider (8), the laser induced switch (7) is vertical with the plate face of the plate (2), described
Laser induced switch (7) corresponds to the standard slider (8) along the plate (2) incline direction and close to the protractor (3)
End face set so that the laser beam sent and the standard slider (8) end face are tangent；
The laser induced switch (7) is electrically connected with the controller that can receive described laser induced switch (7) output signal, described
Controller electrically connects with first driving cylinder (4), to be controlled after laser induced switch (7) is triggered by the standard slider (8)
The motion for making first driving cylinder (4) stops.
2. the measurement apparatus of plate coefficient of friction according to claim 1, it is characterised in that：First sucker (5) with
The first torque spring of the first sucker (5) posture can be limited by being connected between first driving cylinder (4), and described first turns round
Power spring is fixedly installed on the hinged place of first sucker (5) and first driving cylinder (4).
3. the measurement apparatus of plate coefficient of friction according to claim 1, it is characterised in that：First driving cylinder (4)
The second driving cylinder (9) is provided between the protractor (3), second driving cylinder (9) is vertically set, and described
The cylinder body portion of two driving cylinders (9) is arranged on the pedestal (1), and the cylinder rod portion of second driving cylinder (9) is connected with the second suction
Disk (10), one end of second sucker (10) and the cylinder rod portion of second driving cylinder (9) are hinged, second sucker (10)
The plate face of the other end and the plate (2) adsorb, the controller electrically connects with second driving cylinder (9), to control
State the power output of the second driving cylinder (9) clutch end.
4. the measurement apparatus of plate coefficient of friction according to claim 3, it is characterised in that：The top of the pedestal (1)
Open up fluted, the groove is horizontally extending, and the bottom of the groove is fixedly installed guide rail (11), the guide rail
(11) horizontally disposed, being connected with the top of the guide rail (11) can be along the sliding block of the guide rail straight reciprocating motion
(12), the overhead height of the sliding block (12) is less than the height at the top of the pedestal (1), the top of the sliding block (12) with it is described
The cylinder body portion of second driving cylinder (9) is fixedly connected, and the sliding block (12), which is connected with, can drive the sliding block (12) reciprocating linear to transport
Dynamic actuator (13), the controller electrically connect with the actuator (13), to control the actuator (13) power output
The power output at end.
5. the measurement apparatus of plate coefficient of friction according to claim 4, it is characterised in that：The guide rail (11) is straight line
Sliding cylinder guide rail, the guide rail (11) are slidably connected with the sliding block (12), and the actuator (13) is air pump, the driving
Part (13) is connected with the guide rail (11) by gas circuit.
6. the measurement apparatus of plate coefficient of friction according to claim 4, it is characterised in that：The guide rail (11) is straight line
Sliding oil cylinder guide rail, the guide rail (11) are slidably connected with the sliding block (12), and the actuator (13) is hydraulic pump, the drive
Moving part (13) is connected with the guide rail (11) by oil circuit.
7. the measurement apparatus of plate coefficient of friction according to claim 4, it is characterised in that：The guide rail (11) is ball
Lead screw guide rails, the guide rail (11) are connected with the sliding block (12) by lead screw pair, and the actuator (13) is motor, the drive
The clutch end of moving part (13) is fixedly connected with the leading screw portion of the guide rail (11).
8. the measurement apparatus of plate coefficient of friction according to claim 7, it is characterised in that：The actuator (13) is to watch
Take motor or stepper motor.
9. the measurement apparatus of plate coefficient of friction according to claim 3, it is characterised in that：Second sucker (10) with
The second torque spring of the second sucker (10) posture can be limited by being connected between second driving cylinder (9), and described second
Torque spring is fixedly installed on the hinged place of second sucker (10) and second driving cylinder (9).
10. the measurement apparatus of the plate coefficient of friction according to any one of claim 1-9, it is characterised in that：Described
One driving cylinder (4) is cylinder or hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710589440.9A CN107561002A (en) | 2017-07-19 | 2017-07-19 | The measurement apparatus of plate coefficient of friction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710589440.9A CN107561002A (en) | 2017-07-19 | 2017-07-19 | The measurement apparatus of plate coefficient of friction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107561002A true CN107561002A (en) | 2018-01-09 |
Family
ID=60973678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710589440.9A Pending CN107561002A (en) | 2017-07-19 | 2017-07-19 | The measurement apparatus of plate coefficient of friction |
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|---|---|
| CN (1) | CN107561002A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085116A (en) * | 2018-11-08 | 2018-12-25 | 河北科技大学 | Friction coefficient tester and measuring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL150990B2 (en) * | 1988-04-21 | 1990-07-31 | Politechnika Krakowska | Device for determining static and kinetic friction factors |
| CN202057575U (en) * | 2011-03-08 | 2011-11-30 | 宁波大学 | Measuring device for friction factor of materials |
| CN204990894U (en) * | 2015-07-10 | 2016-01-20 | 新余学院 | Physical teaching is with demonstration utensil |
| CN106157760A (en) * | 2015-03-23 | 2016-11-23 | 李素敏 | A kind of frictional force experimental teaching unit |
| CN206021688U (en) * | 2016-08-09 | 2017-03-15 | 赵宇琛 | Physics inclined-plane motion simulation demonstrating apparatus |
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2017
- 2017-07-19 CN CN201710589440.9A patent/CN107561002A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL150990B2 (en) * | 1988-04-21 | 1990-07-31 | Politechnika Krakowska | Device for determining static and kinetic friction factors |
| CN202057575U (en) * | 2011-03-08 | 2011-11-30 | 宁波大学 | Measuring device for friction factor of materials |
| CN106157760A (en) * | 2015-03-23 | 2016-11-23 | 李素敏 | A kind of frictional force experimental teaching unit |
| CN204990894U (en) * | 2015-07-10 | 2016-01-20 | 新余学院 | Physical teaching is with demonstration utensil |
| CN206021688U (en) * | 2016-08-09 | 2017-03-15 | 赵宇琛 | Physics inclined-plane motion simulation demonstrating apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085116A (en) * | 2018-11-08 | 2018-12-25 | 河北科技大学 | Friction coefficient tester and measuring method |
| CN109085116B (en) * | 2018-11-08 | 2020-11-06 | 河北科技大学 | Method for measuring friction coefficient |
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Application publication date: 20180109 |
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| RJ01 | Rejection of invention patent application after publication |