CN205247726U - Sliding friction force demonstration apparatus - Google Patents
Sliding friction force demonstration apparatus Download PDFInfo
- Publication number
- CN205247726U CN205247726U CN201620027714.6U CN201620027714U CN205247726U CN 205247726 U CN205247726 U CN 205247726U CN 201620027714 U CN201620027714 U CN 201620027714U CN 205247726 U CN205247726 U CN 205247726U
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- CN
- China
- Prior art keywords
- measured object
- object piece
- dynamometer
- sliding friction
- pulley system
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Abstract
The utility model relates to a teaching experiment equipment field, concretely relates to sliding friction force demonstration apparatus, including dynamometer, measured object piece and band pulley system, the measured object piece is placed in the band pulley system, and the dynamometer pulling force direction of connecting the measured object piece is parallel to each other with the mutual gliding direction of measured object piece and band pulley system, skids in the band pulley system when static relatively when the measured object piece, size that the reading is the measured object piece promptly on the dynamometer sliding friction did all can. The utility model discloses an one end of dynamometer is fixed, lets the testee move in the band pulley system, provides sliding friction power by the rotation of band pulley system, gets rid of the jamming factor, let the dynamometry direction completely and the mutual gliding direction of measured object piece and band pulley system be parallel to each other.
Description
Technical field
The utility model relates to a kind of education experiment equipment, particularly a kind of sliding friction force demonstration apparatus.
Background technology
We know, the size of the size of force of sliding friction and object sliding speed and contact area is irrelevant,Relevant with the degree of roughness of pressure on contact-making surface and contact-making surface. In existing physics teaching in secondary school course, relate toAnd the experiment of sliding friction force demonstration, this experiment is the emphasis of middle school physical curriculum. Current existing this experiment of doingApplied experiment equipment comprises dynamometer, measured object piece, stay cord, plank, and measured object piece is placed on plank,Dynamometer one end connects measured object piece by stay cord, and level pulls dynamometer to drive measured object piece sliding on plankMoving, dynamometer reading i.e. the force of sliding friction of surveying.
But while utilizing this experiment equipment to measure force of sliding friction, there are two defects:
1, owing to being that experimental implementation person manually pulls dynamometer to drive the slip of measured object piece, can not ensure to surveyThe direction of pull of power meter, in experimentation, remains the state paralleling with measured object piece contact-making surface, instituteMeasure the force of sliding friction numerical error obtaining also larger.
2, dynamometer placement direction and the measured object piece direction of motion reading inconvenience bringing that is parallel to each other.
Utility model content
Goal of the invention of the present utility model is: exist and manually pull dynamometer to drive quilt for prior artThe slip of surveying thing piece, can not ensure the complete horizontal positioned of dynamometer, causes final reading to have larger errorProblem, provides a kind of rotation by pulley system that force of sliding friction is provided, and allows the complete level of dynamometry direction,Get rid of the device of the measurement force of sliding friction of artificial disturbance factor.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of sliding friction force demonstration apparatus, comprises dynamometer, measured object piece, described in described dynamometer connectsMeasured object piece, its structure also comprises:
Pulley system, described measured object piece is placed on described pulley system, and described pulley system makes described quiltSurvey thing piece and produce force of sliding friction.
Measured object piece is placed on pulley system, at the direction of pull and the measured object piece that connect measured object piece one endThe direction of mutually sliding with pulley system is parallel to each other, when this can ensure that dynamometer pulls measured object piece, and quiltThe glide direction of surveying the relative pulley system of thing piece is parallel to the direction of pull of dynamometer all the time, can effectively reduceConversion or the error of measured object piece frictional force, ensure that the measured pulling force size obtaining of dynamometer connects more accuratelyThe pulling force that nearly testee is actual suffered, the precision of measured this measured object piece obtaining of dynamometer is higher,More accurate.
Measured object piece can be a wooden slide block, can have the surface of any roughness.
Preferably, described measured object piece along continuous straight runs is arranged on described pulley system, and described in can be relativelyPulley system along continuous straight runs slides.
Preferably, described pulley system comprises driving wheel, driven pulley and belt, described driving wheel and driven pulleyBetween adaptation have belt, described measured object piece is placed on described belt.
Preferably, described pulley system can uniform rotation.
Preferably, described measured object piece connects described dynamometer by stay cord, and described dynamometer one end is fixed.
Preferably, there is a gripper shoe described belt below, when described measured object piece is placed on described belt,Described gripper shoe ensures that described belt does not cave in.
Gripper shoe caves in after avoiding belt to put measured object piece, and the test surfaces of belt and measured object piece is connect completelyTouch.
Preferably, stay cord connects described measured object piece, closure and described measured object piece and pulley system phaseThe direction of sliding is mutually parallel to each other, and described stay cord is walked around one end that a pulley vertically connects described dynamometer.
Pulley is a fixed pulley, and position can regulate, and the traction stay cord of the measured object piece of convenient different sizes beginsBe horizontal positioned eventually.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are:
1, because the experiment in past is artificially manually to pull dynamometer to drive measured object piece to slide on plank,Can not ensure the complete horizontal positioned of dynamometer, the reading that dynamometer shows is of real force of sliding frictionComponent, and the utility model is fixed by one end of dynamometer, allows testee move on pulley system,Rotation by pulley system provides force of sliding friction, gets rid of artificial disturbance factor, allow dynamometry direction completely withThe direction that measured object piece and pulley system slide is mutually parallel to each other.
2, the utility model is turned to horizontal slip frictional force to pull dynamometry for vertical direction by a fixed pulleyCount, be convenient to the reading of dynamometer.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Mark in figure: 1-driving wheel, 2-driven pulley, 3-belt, 4-gripper shoe, 5-measured object piece, 6-pulley,7-stay cord, 8-dynamometer.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawingAnd embodiment, the utility model is further elaborated. Should be appreciated that described herein concreteEmbodiment is only in order to explain the utility model, and is not used in restriction the utility model.
Embodiment
As shown in Figure 1, a kind of sliding friction force demonstration apparatus described in the utility model, comprise dynamometer 8,Measured object piece 5 and pulley system, measured object piece 5 is placed on pulley system, and pulley system makes measured object piece 5Produce force of sliding friction, dynamometer 8 connects measured object piece 5.
Pulley system comprises driving wheel 1, driven pulley 2 and belt 3, and belt 3 is tight at driving wheel 1 and drivenOn wheel 2, measured object piece 5 is placed on belt 3, and driving wheel 1 is driven by motor that can stepless time adjustment, canDifferent velocities of rotation is provided.
There is a gripper shoe 4 belt 3 belows, and in the time that measured object piece 5 is placed on belt 3, gripper shoe 4 is avoidedBelt 3 is put the rear depression of measured object piece 5, and belt 3 is contacted completely with the test surfaces of measured object piece 5, beginsThe force of sliding friction of level is provided eventually.
Measured object piece 5 is walked around a fixed pulley 6 by stay cord 7 and is vertically connected dynamometer 8 one end, dynamometer 8The other end is fixed.
When driving wheel 1 is along rotating counterclockwise while driving belt 3 to left movement, be placed on tested on belt 3Thing piece 5 is also moved to the left, and measured object piece 5 drives stay cord 7 to pull one end of dynamometer 8, when measured object piece 5On belt 3, skid when relatively static, on dynamometer 8, reading is the force of sliding friction of measured object piece 5Size.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, allAny amendment of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., all should compriseWithin protection domain of the present utility model.
Claims (7)
1. a sliding friction force demonstration apparatus, comprises dynamometer (8), measured object piece (5), described dynamometer(8) connect described measured object piece (5), it is characterized in that, also comprise pulley system, described measured object piece (5) is putPut on described pulley system, connect dynamometer (8) direction of pull of described measured object piece (5) and described testedThe direction that thing piece (5) and pulley system slide is mutually parallel to each other.
2. a kind of sliding friction force demonstration apparatus according to claim 1, is characterized in that, described inMeasured object piece (5) along continuous straight runs is arranged on described pulley system, and can relatively described pulley system along levelDirection is slided.
3. a kind of sliding friction force demonstration apparatus according to claim 1, is characterized in that, described inPulley system comprises driving wheel (1), driven pulley (2) and belt (3), between described driving wheel (1) and driven pulley (2)Adaptation has belt (3), and described measured object piece (5) is placed on described belt (3).
4. a kind of sliding friction force demonstration apparatus according to claim 3, is characterized in that, described bandWheel system can uniform rotation.
5. a kind of sliding friction force demonstration apparatus according to claim 3, is characterized in that, described skinThere is a gripper shoe (4) band (3) below, when described measured object piece (5) is placed on described belt (3) above, described gripper shoe(4) ensure that described belt (3) does not cave in.
6. according to the arbitrary described a kind of sliding friction force demonstration apparatus of claim 1-5, it is characterized in that,Described measured object piece (5) connects described dynamometer (8) by stay cord (7), and described dynamometer (8) one end is fixed.
7. a kind of sliding friction force demonstration apparatus according to claim 6, is characterized in that, described in drawRope (7) connects described measured object piece (5), and closure and described measured object piece (5) and pulley system slide mutuallyDirection is parallel to each other, and described stay cord (7) is walked around one end that a pulley (6) vertically connects described dynamometer (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620027714.6U CN205247726U (en) | 2016-01-12 | 2016-01-12 | Sliding friction force demonstration apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620027714.6U CN205247726U (en) | 2016-01-12 | 2016-01-12 | Sliding friction force demonstration apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205247726U true CN205247726U (en) | 2016-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620027714.6U Expired - Fee Related CN205247726U (en) | 2016-01-12 | 2016-01-12 | Sliding friction force demonstration apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN205247726U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441666A (en) * | 2016-08-12 | 2017-02-22 | 浙江工业大学 | Frictional force measuring method and frictional force measuring device for sliding block on horizontal linear guide rail |
| CN106525310A (en) * | 2016-11-12 | 2017-03-22 | 山西江淮重工有限责任公司 | Device and method for precisely measuring sliding friction force between sleeves |
| CN106683541A (en) * | 2017-03-14 | 2017-05-17 | 郭金虎 | Test instrument for conveying problem of disc type belt |
| CN107764160A (en) * | 2017-09-30 | 2018-03-06 | 郑州拽亘电子科技有限公司 | A kind of meter counter |
| CN108022484A (en) * | 2017-12-22 | 2018-05-11 | 赵耀 | A kind of Physical Experiment friction force demonstration device |
-
2016
- 2016-01-12 CN CN201620027714.6U patent/CN205247726U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441666A (en) * | 2016-08-12 | 2017-02-22 | 浙江工业大学 | Frictional force measuring method and frictional force measuring device for sliding block on horizontal linear guide rail |
| CN106441666B (en) * | 2016-08-12 | 2022-05-13 | 浙江工业大学 | Method for measuring friction force of sliding block on horizontal linear guide rail |
| CN106525310A (en) * | 2016-11-12 | 2017-03-22 | 山西江淮重工有限责任公司 | Device and method for precisely measuring sliding friction force between sleeves |
| CN106683541A (en) * | 2017-03-14 | 2017-05-17 | 郭金虎 | Test instrument for conveying problem of disc type belt |
| CN106683541B (en) * | 2017-03-14 | 2023-05-09 | 山东百特电子有限公司 | Disc type belt transmission problem experimental instrument |
| CN107764160A (en) * | 2017-09-30 | 2018-03-06 | 郑州拽亘电子科技有限公司 | A kind of meter counter |
| CN108022484A (en) * | 2017-12-22 | 2018-05-11 | 赵耀 | A kind of Physical Experiment friction force demonstration device |
| CN108022484B (en) * | 2017-12-22 | 2019-10-22 | 赵耀 | A kind of Physical Experiment friction force demonstration device |
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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: 20160518 Termination date: 20170112 |