CN205959485U - Sound friction force measuring device for physics experiments - Google Patents
Sound friction force measuring device for physics experiments Download PDFInfo
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- CN205959485U CN205959485U CN201620509757.8U CN201620509757U CN205959485U CN 205959485 U CN205959485 U CN 205959485U CN 201620509757 U CN201620509757 U CN 201620509757U CN 205959485 U CN205959485 U CN 205959485U
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- riser
- fixed pulley
- drive shaft
- plate
- friction
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Abstract
The utility model discloses a sound friction force measuring device for physics experiments relates to mechanics physics experimental device technical field. It includes horizontal base, installs at the riser of horizontal base top, horizontal installation track board, the stay cord at the riser top perpendicularly, placed on the right -hand member of friction plate and measured the piece, the top of riser is provided with the A fixed pulley, and the lower part is provided with the B fixed pulley, between A fixed pulley and B fixed pulley, sliding connection has the shaped plate of falling L on the riser, the electron tensiometer is installed to the roof lower extreme of the shaped plate of falling L, the one end and the measurement piece of stay cord are connected, and the A fixed pulley is walked around to the other end and the B fixed pulley is connected to on the electron tensiometer. The utility model discloses structure measurement process distinctness directly perceived, the data contrast is obvious, tempers student's operation capacity, and improvement study is interesting.
Description
Technical field
The utility model is related to mechanics Physical Experiment equipment technical field.
Background technology
The difference of dynamic friction and slip friction factor and maximum static friction factor is：1st, dynamic friction factor is solely dependent upon and connects
The material of tactile object.Dynamic friction factor=relative motion frictional force/normal pressure, dynamic friction factor refers to do not considering contact surface
Other environment, the only friction factor during difference of consideration object material.Slip friction factor depends on the material of contact surface, also
Humidity, the factor such as face smooth degree, dry and wet degree, surface temperature, speed of related movement.Slip friction factor=force of sliding friction/
Pressure.With respect to dynamic friction factor, slip friction factor more can reflect actual conditions, is widely used.Maximum static friction factor
Not only depend on the material of contact surface, humidity, the factor such as face smooth degree, dry and wet degree, surface temperature, speed of related movement,
Additionally depend on the pressure size of contact surface.So, maximum static friction factor is greater than dynamic friction factor.Maximum static friction factor=
Maximum static friction force/normal pressure, maximum static friction force refers to the object of two contacts, just pulling force when pulled, and this draws
Power is greater than the kinetic force of friction after slip.
In carrying out high school physicses mechanics style, for kinetic force of friction and the stiction of accurate detecting object, inventor
Devise a kind of measurement apparatus, it can measure kinetic force of friction and the stiction of object under many kinds of parameters environment, using straight
Student can be sharpened understanding for the experimentation data seen.
Utility model content
Technical problem to be solved in the utility model, is for above-mentioned technical deficiency, provides a kind of physics real
Test and use sound friction measurement device, its measurement process is intuitively distinct, Data Comparison is obvious, the operational capacity of exercise student ' carries
High study is interesting.
The technical solution adopted in the utility model is：A kind of Physical Experiment sound friction measurement device is provided, including
Horizontal base, it is vertically mounted on riser above horizontal base, the track plates being horizontally arranged at riser top, drawstring；Described rail
The top surface of guidance tape is provided with slot in the longitudinal direction；In slot, grafting is combined with friction plate；It is placed with the right-hand member of friction plate
Survey mass；The top of riser is provided with A fixed pulley, and bottom is provided with B fixed pulley；Between A fixed pulley and B fixed pulley, riser
On slidably connect inverted L-shaped plate；The top board lower end of inverted L-shaped plate is provided with electronic tension meter；One end of drawstring is connected with survey mass,
The other end bypasses A fixed pulley and B fixed pulley is connected on electronic tension meter；The side plate of inverted L-shaped plate and riser are slidably connected, side plate
In the vertical direction is provided with tooth bar；In riser, rotating shaft is connected with A drive shaft；A drive with tooth bar cooperation is provided with A drive shaft
Moving gear；A drives the tip of the axis to be connected with handwheel.
Further optimize the technical program, Physical Experiment sound friction measurement device above A drive shaft, riser
Interior rotating shaft is connected with B drive shaft；B driving gear with tooth bar cooperation is provided with B drive shaft；B drives the tip of the axis to be connected with
Rocking bar.
Optimize the technical program further, the lower section of the track plates of Physical Experiment sound friction measurement device is provided with
Electric hot plate；Electronic thermometer is provided with horizontal base；The probe of electronic thermometer is arranged on electric hot plate.
The beneficial effects of the utility model are：1st, in this device, the slowly upper shifting of inverted L-shaped plate is driven by rotation hand wheel, this
When monitoring electronic tension meter maximum；By changing different degree of roughness friction plates, the maximum stiction of measurement；By rotation
Change hands wheel to get off inverted L-shaped plate, drive stable, speed is uniform.The reading change of electronic tension meter can be by reducing the change of handwheel
Speed and become very slow, so when survey mass is mobile, reading becomes apparent from from large to small.2nd, equally can be driven down using rocking bar
Move in L shaped plate, but its speed can be faster than handwheel, and be conducive to remaining a constant speed, be so conducive to measuring dynamic friction factor.
3rd, the technical program can be heated to friction plate and survey mass by electric hot plate, can verify temperature by changing temperature parameter
Impact to kinetic force of friction.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the decomposing schematic representation of inverted L-shaped plate.
In figure, 1, horizontal base；2nd, riser；3rd, track plates；4th, drawstring；5th, slot；6th, friction plate；7th, survey mass；8th, A is fixed
Pulley；9th, B fixed pulley；10th, inverted L-shaped plate；11st, electronic tension meter；12nd, side plate；13rd, top board；14th, tooth bar；15th, A drive shaft；
16th, A driving gear；17th, handwheel；18th, B drive shaft；19th, B driving gear；20th, rocking bar；21st, electric hot plate；22nd, electronic thermometer.
Specific embodiment
With reference to the accompanying drawings and detailed description the utility model is described in further detail.
As shown in Figure 1-2, Physical Experiment sound friction measurement device, including horizontal base 1, is vertically mounted on level
The riser 2 of base 1 top, the track plates 3 being horizontally arranged at riser 2 top, drawstring 4；The top surface of described track plates 3 is in length side
Set up slot 5；In slot 5, grafting is combined with friction plate 6；Survey mass 7 is placed with the right-hand member of friction plate 6；Riser 2
Top is provided with A fixed pulley 8, and bottom is provided with B fixed pulley 9；Between A fixed pulley 8 and B fixed pulley 9, the company of slip on riser 2
It is connected to inverted L-shaped plate 10；Top board 13 lower end of inverted L-shaped plate 10 is provided with electronic tension meter 11；One end of drawstring 4 is with survey mass 7 even
Connect, the other end bypasses A fixed pulley 8 and B fixed pulley 9 is connected on electronic tension meter 11；Side plate 12 and the riser 2 of inverted L-shaped plate 10
It is slidably connected, side plate 12 in the vertical direction is provided with tooth bar 14；In riser 2, rotating shaft is connected with A drive shaft 15；A drive shaft 15
On be provided with tooth bar 14 cooperation A driving gear 16；The end of A drive shaft 15 is connected with handwheel 17；Upper in A drive shaft 15
Side, rotating shaft in riser 2 is connected with B drive shaft 18；B driving gear 19 with tooth bar 14 cooperation is provided with B drive shaft 18；B drives
The end of moving axis 18 is connected with rocking bar 20；The lower section of track plates 3 is provided with electric hot plate 21；Electronics temperature is provided with horizontal base 1
Degree meter 22；The probe of electronic thermometer 22 is arranged on electric hot plate 21.
The central principle of the present embodiment is to control, by the cooperation of gear and gear, the speed pulling survey mass 7, using hand
Take turns 17 slow drivings to move on inverted L-shaped plate 10, with the pulling force of electronic tension meter 11 direct measurement drawstring 4, slow due to dragging, work as survey
Gauge block 7 movement in a flash, the reading significant changes of electronic tension meter 11.And this process can repeatedly operational measure maximum quiet
Frictional force, try to achieve exact value.
At the uniform velocity pivots rocker 20, inverted L-shaped plate 10 is at the uniform velocity upper to be moved, and measures through multiple, can measure kinetic force of friction.For
At the uniform velocity pivots rocker 20, is referred to the change of electronic tension meter 11.
The numerical value of the numerical value of maximum static friction force and kinetic force of friction is compared, can significantly find maximum static friction
Power is more than kinetic force of friction.
In addition repeatedly set the temperature of electric hot plate 21 and the friction plate 6 changing different roughness, can draw out at this
Under two Parameters variation, the change of sound frictional force, find the contact between parameter.
Claims (3)
1. a kind of Physical Experiment with sound friction measurement device it is characterised in that：Including horizontal base（1）, be vertically mounted on
Horizontal base（1）The riser of top（2）, be horizontally arranged at riser（2）The track plates at top（3）, drawstring（4）；Described track plates
（3）Top surface be provided with slot in the longitudinal direction（5）；Slot（5）Interior grafting is combined with friction plate（6）；Friction plate（6）The right side
Survey mass is placed with end（7）；Riser（2）Top be provided with A fixed pulley（8）, bottom is provided with B fixed pulley（9）；Fixed in A
Pulley（8）With B fixed pulley（9）Between, riser（2）On slidably connect inverted L-shaped plate（10）；Inverted L-shaped plate（10）Top board（13）
Lower end is provided with electronic tension meter（11）；Drawstring（4）One end and survey mass（7）Connect, the other end bypasses A fixed pulley（8）And B
Fixed pulley（9）It is connected to electronic tension meter（11）On；Inverted L-shaped plate（10）Side plate（12）With riser（2）It is slidably connected, side plate
（12）In the vertical direction is provided with tooth bar（14）；Riser（2）Interior rotating shaft is connected with A drive shaft（15）；A drive shaft（15）Upper peace
Equipped with tooth bar（14）The A driving gear of cooperation（16）；A drive shaft（15）End be connected with handwheel（17）.
2. Physical Experiment according to claim 1 with sound friction measurement device it is characterised in that：In A drive shaft
（15）Top, riser（2）Interior rotating shaft is connected with B drive shaft（18）；B drive shaft（18）On be provided with and tooth bar（14）Cooperation
B driving gear（19）；B drive shaft（18）End be connected with rocking bar（20）.
3. Physical Experiment according to claim 1 with sound friction measurement device it is characterised in that：Track plates（3）'s
Lower section is provided with electric hot plate（21）；Horizontal base（1）On electronic thermometer is installed（22）；Electronic thermometer（22）Probe peace
It is contained in electric hot plate（21）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620509757.8U CN205959485U (en) | 2016-05-31 | 2016-05-31 | Sound friction force measuring device for physics experiments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620509757.8U CN205959485U (en) | 2016-05-31 | 2016-05-31 | Sound friction force measuring device for physics experiments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205959485U true CN205959485U (en) | 2017-02-15 |
Family
ID=57966756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620509757.8U Expired - Fee Related CN205959485U (en) | 2016-05-31 | 2016-05-31 | Sound friction force measuring device for physics experiments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205959485U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108091221A (en) * | 2018-01-09 | 2018-05-29 | 黑河学院 | The multi-functional mechanics apparatus for demonstrating of Physical Experiment |
-
2016
- 2016-05-31 CN CN201620509757.8U patent/CN205959485U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108091221A (en) * | 2018-01-09 | 2018-05-29 | 黑河学院 | The multi-functional mechanics apparatus for demonstrating of Physical Experiment |
| CN108091221B (en) * | 2018-01-09 | 2020-03-17 | 黑河学院 | Multifunctional mechanics demonstration device for physics experiments |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20180531 |