CN107578677A - A kind of frictional force experimental teaching unit - Google Patents
A kind of frictional force experimental teaching unit Download PDFInfo
- Publication number
- CN107578677A CN107578677A CN201710719093.7A CN201710719093A CN107578677A CN 107578677 A CN107578677 A CN 107578677A CN 201710719093 A CN201710719093 A CN 201710719093A CN 107578677 A CN107578677 A CN 107578677A
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- China
- Prior art keywords
- frictional force
- pressure
- turntable
- experimental teaching
- teaching unit
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Abstract
The invention discloses a kind of frictional force experimental teaching unit,Including experiment porch,Device for measuring force,Adjusting means and conversion equipment,Device for measuring force includes weight beam,Mobile base and pull bar,Adjusting means includes fixed station,Press seat and pressure gauge,Pressure gauge includes connecting plate,Pressure sensor,AT89C51 single-chip microcomputers,Bearing plate and display screen,Bearing plate is linked together by connecting plate and fixed station,Pressure seat is internally provided with groove,Linked together between fixed station and weight beam by metallic rod,Conversion equipment includes turntable and brassboard,Turntable uses polygonized structure,Brassboard is installed in the faceted pebble surface of turntable,Turntable is rotated by rotary shaft,The pressure size when device not only can freely adjust experiment,And it is easy to that student can be demonstrated by different rubbing surfaces the factor for influenceing frictional force,Student is facilitated to get information about frictional force,Reach good teaching efficiency.
Description
Technical field
The present invention relates to instructional technology field, specially a kind of frictional force experimental teaching unit.
Background technology
The power of relative motion of object (or relative motion trend) is hindered to be called frictional force.The direction of frictional force is relative with object
The in opposite direction of (or relative motion trend) is moved, frictional force is divided into stiction, rolling friction, three kinds, one of sliding friction
Object produces the friction for hindering their relative motions when another body surface slides between contact surface, referred to as slide and rub
Wipe；The size of force of sliding friction is relevant with the size and pressure size of the degree of roughness of contact surface.Pressure is bigger, object contact surface
More coarse, caused force of sliding friction is bigger；
Application No. 201510126809.3, patent name are a kind of frictional force experimental teaching unit.It includes bottom plate, institute
State bottom plate one end and be hinged with flap, the bottom plate is provided with groove, cylinder, the other end of the cylinder are hinged with the groove
The bottom surface of flap is hinged on, the cylinder is connected with aerating device, and fixed angled instruction disk, the angle refer on the flap
Show that Pan Yuandianchu sets hang with indicator.The aerating device is foot-operated or manual aerating device, the aerating device and cylinder it
Between be provided with switch.The flap is surrounded by baffle plate.The present invention can demonstrate the physical phenomenon of various angles, different to adapt to
Teaching request, it can prevent the test articles on flap from skidding off, improve demonstrating effect；
But the device to frictional force when testing, it is impossible to displaying influences the factor of frictional force well, and
And be not easy to adjust, do not possess good teaching efficiency.
The content of the invention
In order to overcome the shortcomings of prior art, the present invention provides a kind of frictional force experimental teaching unit, not only can be with
Pressure size when freely adjusting experiment, and be easy to that student can be demonstrated influence frictional force by different rubbing surfaces
Factor, facilitate student to get information about frictional force, reach good teaching efficiency.
The technical solution adopted for the present invention to solve the technical problems is：A kind of frictional force experimental teaching unit, including reality
Platform, device for measuring force, adjusting means and conversion equipment are tested, the device for measuring force includes weight beam, Mobile base and pull bar,
Described pull bar one end and Mobile base are linked together, and the pull bar other end is fixed by fixed seat, the movement
Seat bottom is provided with movable pulley, and the Mobile base is slided by movable pulley on experiment porch surface, and the adjusting means includes solid
Determine platform, pressure seat and pressure gauge, the fixed station is placed on experiment porch surface, and the pressure gauge includes connecting plate, pressure passes
Sensor, AT89C51 single-chip microcomputers, bearing plate and display screen, the bearing plate is linked together by connecting plate and fixed station, described
Pressure sensor is arranged on bearing plate interior surface, and the pressure seat is internally provided with groove, fixed station and the spring dynamometry
Linked together between meter by metallic rod, the conversion equipment includes turntable and brassboard, and the turntable is using polygon
Shape structure, the brassboard are installed in the faceted pebble surface of turntable, and the turntable is rotated by rotary shaft, described solid
Reservation is fixed on the middle opening both sides of experiment porch.
As a kind of preferable technical scheme of the present invention, the pull bar is driven using hydraulic stem.
As a kind of preferable technical scheme of the present invention, the pressure signal detected is transferred to by the pressure sensor
AT89C51 single-chip microcomputers, signal are shown on a display screen after the processing of AT89C51 single-chip microcomputers.
As a kind of preferable technical scheme of the present invention, the pressure gauge is powered by charged lithium cells..
As a kind of preferable technical scheme of the present invention, the experiment porch bottom is provided with support frame, support frame as described above
Bottom is connected with anti-skid rubber cushion.
As a kind of preferable technical scheme of the present invention, the experiment porch surface is provided with middle opening, the centre
Opening is identical with brassboard size.
As a kind of preferable technical scheme of the present invention, several described brassboards use the material system of different coefficients of friction
Into.
Compared with prior art, the beneficial effects of the invention are as follows：The frictional force experimental teaching unit, by setting dynamometry to fill
Put, pull bar caused pulling force when push-and-pull is measured using weight beam, while by setting pull bar to pass through hydraulic pressure
It is driven, you can so that Mobile base is moved by movable pulley in experiment porch, while by setting adjusting means, by applying
The metal derby of weightening is added in wedge interior grooves or adds water to improve the quality of pressure seat, so as to which convenient checking pressure is big
The small influence to frictional force, while by setting pressure gauge, pressure signal is detected using pressure sensor, it is mono- by AT89C51
Show after the processing of piece machine on a display screen, so as to conveniently observe directly pressure size, while changed by setting
Device, rotating seat is rotated using rotary shaft, you can changed the brassboard of the different seamed edges of rotating seat, so as to realize not
With the conversion of the material of coefficient of friction, so as to verify influence of the coefficient of friction to frictional force, teaching efficiency is played, the device is not only
Pressure size when experiment can freely be adjusted, and be easy to that student can be demonstrated influence friction by different rubbing surfaces
The factor of power, facilitates student to get information about frictional force, reaches good teaching efficiency.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is side structure schematic diagram of the present invention；
Fig. 3 is pressure gauge workflow schematic diagram of the present invention.
In figure：1- experiment porch；2- device for measuring force；3- conversion equipments；4- adjusting meanss；5- support frames；6- spring dynamometry
Meter；7- Mobile bases；8- pull bars；9- fixed seats；10- movable pulleies；11- fixed stations；12- pressure seats；13- pressure gauges；14- connections
Plate；15- pressure sensors；16- display screens；17-AT89C51 single-chip microcomputers；18- middle openings；19- bearing plates；20- grooves；21-
Metallic rod；22- turntables；23- brassboards；24- anti-skid rubber cushions.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The explanation of following embodiment is refer to the attached drawing, can be to the specific embodiment implemented to the example present invention.
The direction and position term that the present invention is previously mentioned, for example, " on ", " in ", " under ", "front", "rear", "left", "right", " interior ", "
Outside ", " side " etc., only it is direction and position with reference to annexed drawings.Therefore, the direction and position term used is to illustrate
And understand the present invention, and it is not used to the limitation present invention.
Embodiment：
As shown in Figure 1 to Figure 3, the present invention proposes a kind of technical scheme：A kind of frictional force experimental teaching unit, including experiment
Platform 1, device for measuring force 2, adjusting means 4 and conversion equipment 3, the device for measuring force 2 include weight beam 6, Mobile base 7 and pushed away
Pull bar 8, described one end of pull bar 8 and Mobile base 7 link together, and the other end of pull bar 8 is consolidated by fixed seat 9
Fixed, the bottom of Mobile base 7 is provided with movable pulley 10, and the Mobile base 7 is slided by movable pulley 10 on the surface of experiment porch 1,
The adjusting means 4 includes fixed station 11, pressure seat 12 and pressure gauge 13, the fixed station 11 and is placed on the surface of experiment porch 1,
The pressure gauge 13 includes connecting plate 14, pressure sensor 15, AT89C51 single-chip microcomputers 17, bearing plate 19 and display screen 16, described
Bearing plate 19 is linked together by connecting plate 14 and fixed station 11, and the pressure sensor 15 is arranged on the inside table of bearing plate 19
Face, the pressure seat 12 are internally provided with groove 20, connected between the fixed station 11 and weight beam 6 by metallic rod 21
Together, you can pull fixed station 11, the size of frictional force, the conversion can be measured when fixed station 11 just moves
Device 3 includes turntable 22 and brassboard 23, and the turntable 22 uses polygonized structure, and the brassboard 23 is installed in rotation
The faceted pebble surface of turntable 22, the turntable 22 are rotated by rotary shaft 24, and the surface of experiment porch 1 is provided with centre
Opening 18, the middle opening 18 is identical with the size of brassboard 23, and the fixed seat 9 is fixed on the middle opening of experiment porch 1
18 both sides, several described brassboards 23 are made of the material of different coefficients of friction, convenient directly to change different materials.
The main characteristic of the invention lies in that the pull bar 8 is driven using hydraulic stem；The pressure sensor 15 will detect
To pressure signal be transferred to AT89C51 single-chip microcomputers 17, signal is shown in display after the processing of AT89C51 single-chip microcomputers 17
On screen 16；The pressure gauge 13 is powered by charged lithium cells；The bottom of experiment porch 1 is provided with support frame 5, the support
The bottom of frame 5 is connected with anti-skid rubber cushion 24, plays anti-skidding effect.
Embodiment and advantage：The frictional force experimental teaching unit, by setting device for measuring force, utilize spring dynamometry
Meter measurement pull bar caused pulling force when push-and-pull, while by setting pull bar to be driven by hydraulic pressure, you can make
Mobile base is obtained to move in experiment porch by movable pulley, while by setting adjusting means, by pressure seat interior grooves
Add the metal derby of weightening or add water to improve the quality of pressure seat, so as to which convenient checking pressure size is to the shadow of frictional force
Ring, while by setting pressure gauge, pressure signal is detected using pressure sensor, after the processing by AT89C51 single-chip microcomputers
Display on a display screen, so as to conveniently observe directly pressure size, while by setting conversion equipment, utilizes rotary shaft
To rotate rotating seat, you can changed the brassboard of the different seamed edges of rotating seat, so as to realize the material of different coefficients of friction
The conversion of material, so as to verify influence of the coefficient of friction to frictional force, teaching efficiency is played, the device not only can freely adjust reality
Pressure size when testing, and be easy to that student can be demonstrated by different rubbing surfaces the factor for influenceing frictional force, it is convenient
Student gets information about frictional force, reaches good teaching efficiency.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Claims (7)
- A kind of 1. frictional force experimental teaching unit, it is characterised in that：Including experiment porch (1), device for measuring force (2), adjusting means (4) and conversion equipment (3), the device for measuring force (2) includes weight beam (6), Mobile base (7) and pull bar (8), described to push away Pull bar (8) one end and Mobile base (7) are linked together, and pull bar (8) other end is fixed by fixed seat (9), institute State Mobile base (7) bottom and movable pulley (10) is installed, the Mobile base (7) is by movable pulley (10) on experiment porch (1) surface Slide, the adjusting means (4) includes fixed station (11), pressure seat (12) and pressure gauge (13), and the fixed station (11) is placed On experiment porch (1) surface, the pressure gauge (13) includes connecting plate (14), pressure sensor (15), AT89C51 single-chip microcomputers (17), bearing plate (19) and display screen (16), the bearing plate (19) are connected to one by connecting plate (14) and fixed station (11) Rise, the pressure sensor (15) is arranged on bearing plate (19) interior surface, and the pressure seat (12) is internally provided with groove (20), linked together between the fixed station (11) and weight beam (6) by metallic rod (21), the conversion equipment (3) turntable (22) and brassboard (23) are included, the turntable (22) uses polygonized structure, and the brassboard (23) is pacified Mounted in the faceted pebble surface of turntable (22), the turntable (22) is rotated by rotary shaft (24), and the fixed seat (9) is solid It is scheduled on middle opening (18) both sides of experiment porch (1).
- A kind of 2. frictional force experimental teaching unit according to claim 1, it is characterised in that：The pull bar (8) uses Hydraulic stem drives.
- A kind of 3. frictional force experimental teaching unit according to claim 1, it is characterised in that：The pressure sensor (15) The pressure signal detected is transferred to AT89C51 single-chip microcomputers (17), signal is after the processing of AT89C51 single-chip microcomputers (17) It is shown on display screen (16).
- A kind of 4. frictional force experimental teaching unit according to claim 1, it is characterised in that：The pressure gauge (13) passes through Charged lithium cells are powered.
- A kind of 5. frictional force experimental teaching unit according to claim 1, it is characterised in that：Experiment porch (1) bottom End is provided with support frame (5), and support frame as described above (5) bottom is connected with anti-skid rubber cushion (24).
- A kind of 6. frictional force experimental teaching unit according to claim 1, it is characterised in that：Experiment porch (1) table Face is provided with middle opening (18), and the middle opening (18) is identical with brassboard (23) size.
- A kind of 7. frictional force experimental teaching unit according to claim 1, it is characterised in that：Several described brassboards (23) it is made of the material of different coefficients of friction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710719093.7A CN107578677A (en) | 2017-08-21 | 2017-08-21 | A kind of frictional force experimental teaching unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710719093.7A CN107578677A (en) | 2017-08-21 | 2017-08-21 | A kind of frictional force experimental teaching unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107578677A true CN107578677A (en) | 2018-01-12 |
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ID=61034585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710719093.7A Pending CN107578677A (en) | 2017-08-21 | 2017-08-21 | A kind of frictional force experimental teaching unit |
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| Country | Link |
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| CN (1) | CN107578677A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107993535A (en) * | 2018-02-01 | 2018-05-04 | 孙鹏宇 | A kind of physical study friction force demonstration device |
| CN108480054A (en) * | 2018-02-10 | 2018-09-04 | 中国矿业大学 | A kind of adjustable powder electric separation environmental protection collection device of wall friction material rotation |
| CN109036018A (en) * | 2018-09-12 | 2018-12-18 | 郑云天 | A kind of physical mechanics apparatus for demonstrating |
| CN109473018A (en) * | 2018-12-29 | 2019-03-15 | 路依丹 | A kind of high school physics study apparatus for demonstrating |
| CN110044723A (en) * | 2019-05-08 | 2019-07-23 | 苏州昇特智能科技有限公司 | A kind of Visualized Flexible material bending performance measuring device |
| CN111768661A (en) * | 2020-08-03 | 2020-10-13 | 泉州台商投资区源平信息技术有限公司 | Workstation is used in accounting teaching |
Citations (3)
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|---|---|---|---|---|
| CN205609072U (en) * | 2016-02-29 | 2016-09-28 | 刘毅 | Physical teaching is with probing frictional force presentation device |
| CN205827736U (en) * | 2016-04-07 | 2016-12-21 | 刘旭然 | A kind of high school physics friction force demonstration device |
| CN206194214U (en) * | 2016-07-27 | 2017-05-24 | 李世斌 | Many slides of physical teaching friction inclined plane device |
-
2017
- 2017-08-21 CN CN201710719093.7A patent/CN107578677A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205609072U (en) * | 2016-02-29 | 2016-09-28 | 刘毅 | Physical teaching is with probing frictional force presentation device |
| CN205827736U (en) * | 2016-04-07 | 2016-12-21 | 刘旭然 | A kind of high school physics friction force demonstration device |
| CN206194214U (en) * | 2016-07-27 | 2017-05-24 | 李世斌 | Many slides of physical teaching friction inclined plane device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107993535A (en) * | 2018-02-01 | 2018-05-04 | 孙鹏宇 | A kind of physical study friction force demonstration device |
| CN108480054A (en) * | 2018-02-10 | 2018-09-04 | 中国矿业大学 | A kind of adjustable powder electric separation environmental protection collection device of wall friction material rotation |
| CN108480054B (en) * | 2018-02-10 | 2019-12-03 | 中国矿业大学 | A kind of adjustable powder electric separation environmental protection collection device of wall friction material rotation |
| CN109036018A (en) * | 2018-09-12 | 2018-12-18 | 郑云天 | A kind of physical mechanics apparatus for demonstrating |
| CN109473018A (en) * | 2018-12-29 | 2019-03-15 | 路依丹 | A kind of high school physics study apparatus for demonstrating |
| CN110044723A (en) * | 2019-05-08 | 2019-07-23 | 苏州昇特智能科技有限公司 | A kind of Visualized Flexible material bending performance measuring device |
| CN111768661A (en) * | 2020-08-03 | 2020-10-13 | 泉州台商投资区源平信息技术有限公司 | Workstation is used in accounting teaching |
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Application publication date: 20180112 |