CN102236988A - Friction force measuring device - Google Patents
Friction force measuring device Download PDFInfo
- Publication number
- CN102236988A CN102236988A CN2010101623849A CN201010162384A CN102236988A CN 102236988 A CN102236988 A CN 102236988A CN 2010101623849 A CN2010101623849 A CN 2010101623849A CN 201010162384 A CN201010162384 A CN 201010162384A CN 102236988 A CN102236988 A CN 102236988A
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- China
- Prior art keywords
- dynamometer
- hollow box
- block
- measurement device
- friction measurement
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a friction force measuring device, which comprises a block, a bottom plate for supporting the block, and a dynamometer connected with the block. The friction force measuring device is characterized in that: the block is a hollow box in which the dynamometer is arranged; the lateral surface of the hollow box is provided with an observation window; the dynamometer is arranged in the hollow box through a fastener; an upward extending fixed pulley is fixed at one end of the bottom plate; and the dynamometer is connected with a hung heavy barrel through a rope going around the fixed pulley. Fine objects are gradually increased and reduced in the heavy barrel, the magnitude of pull can be finely adjusted, and uniform motion can be realized; the experimental consideration is as same as the scheme of a textbook, and the principle is simple and easily understood by students; and because the dynamometer is placed in the cavity of the block, puzzle of irrelevant friction generated by contact of the dynamometer and the bottom plate is avoided.
Description
Technical field
The present invention relates to a kind of instruments used for education, especially for the friction measurement device of measuring the friction force size.
Background technology
The size of research friction force is relevant with which factor and what kind of relation arranged, emphasis experiment for junior physics normally is placed on the thing piece on the horizonal base plate, and hand-held dynamometer is made linear uniform motion by rope yarn level pulling thing piece, writing down the dynamometer reading, is exactly the friction force that the thing piece is being subjected to.Because the pulling of hand is with at the uniform velocity too wide in the gap, the dynamometer registration is constantly being beated, and is difficult to experiment.
So by " the thing piece is motionless, pulls moving base plate " having occurred, the thing piece is done with respect to the base plate motion, effect is slightly improved, but increased the difficulty that the student understands relative motion.
Summary of the invention
The objective of the invention is: provide a kind of experimental considerations constant substantially, do not increase the student and understand difficulty, motion is near at the uniform velocity friction measurement device.
The technical solution used in the present invention is: a kind of friction measurement device, comprise the base plate of thing piece, support piece, the dynamometer that links to each other with the thing piece, it is characterized in that, described thing piece is the hollow box of built-in described dynamometer, the side of described hollow box has view window, described dynamometer is installed in the hollow box by securing member, and described base plate one end is fixed with the fixed pulley that protrudes upward, and the rope yarn of described dynamometer through walking around fixed pulley links to each other with the weight bucket of suspension.
Described view window is the side of opening or is fixed with transparent panel, the dynamometer panel of described view window in the hollow box.
After adopting said structure: can adorn small objects such as iron nail, fine sand in the weight bucket, increase and decrease as one feels fit, pulling force size trace is adjustable, can realize the uniform motion of thing piece; Dynamometer places thing piece inner chamber, has avoided dynamometer to contact the puzzlement that produces irrelevant friction with base plate.
The invention has the beneficial effects as follows: experimental considerations is identical with the textbook scheme, principle is simple, the student is understandable, adopts simple structure to realize that the thing piece makes the realistic problem of linear uniform motion, and is with low cost, be easy to promote.
Description of drawings
Fig. 1 is a cut-open view of the present invention.
Among the figure: 1 pressurizing block, 2 securing members, 3 hollow box, 4 dynamometers, 5 rope yarns, 6 rubbing surfaces, 7 base plates, 8 fixed pulleys, 9 weight buckets, 10 weights.
Embodiment
As shown in Figure 1, an end of base plate 7 is fixed with the fixed pulley 8 that protrudes upward, and is placed with removable rubbing surface 6 on the base plate 7, to change the degree of roughness of surface of contact.Be placed with hollow box 3 on the rubbing surface 6, by securing member 2 (Fig. 1 is the cushion block that is squeezed between chamber wall and the dynamometer shell) dynamometer 4 is installed in the hollow box 3, hollow box 3 has at least one openend, or hollow box 3 at least one ends have the hole that the hook for dynamometer 4 stretches out.Hollow box 3 also has a lateral blister adjacent with above-mentioned openend (front among the figure), this view window can be the side of opening, also can be fixed into transparent panel,, be convenient in experimentation, read the registration of dynamometer 4 to expose the panel of dynamometer in the hollow box.
The hook of dynamometer 4 links to each other with an end of rope yarn 5, the other end of rope yarn 5 is hung with weight bucket 9 after walking around fixed pulley 8, and the weight of adjustable number is housed in the weight bucket 9, and weight can be small objects such as iron nail, fine sand, to regulate pulling force size, make hollow box 3 uniform motion to hollow box 3.
The top of hollow box is placed with several pressurizing block, to change the pressure size of hollow box to base plate.
Described dynamometer can be the dynamometer of breadboard each kind, as cylinder dynamometer, dull and stereotyped dynamometry, bar shaped box dynamometer, electronic dynamometer etc.
Claims (4)
1. friction measurement device, comprise the base plate of thing piece, support piece, the dynamometer that links to each other with the thing piece, it is characterized in that, described thing piece is the hollow box of built-in described dynamometer, the side of described hollow box has view window, described dynamometer is installed in the hollow box by securing member, and described base plate one end is fixed with the fixed pulley that protrudes upward, and the rope yarn of described dynamometer through walking around fixed pulley links to each other with the weight bucket of suspension.
2. friction measurement device as claimed in claim 1 is characterized in that: described view window is the side of opening or is fixed with transparent panel, the dynamometer panel of described view window in the hollow box.
3. friction measurement device as claimed in claim 2 is characterized in that: described friction measurement device also includes several pressurizing block that can be positioned over the hollow box top.
4. as the described friction measurement device of above-mentioned any claim, it is characterized in that: described dynamometry is counted cylinder dynamometer, dull and stereotyped dynamometry, bar shaped box dynamometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101623849A CN102236988A (en) | 2010-05-05 | 2010-05-05 | Friction force measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101623849A CN102236988A (en) | 2010-05-05 | 2010-05-05 | Friction force measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102236988A true CN102236988A (en) | 2011-11-09 |
Family
ID=44887599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101623849A Pending CN102236988A (en) | 2010-05-05 | 2010-05-05 | Friction force measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102236988A (en) |
Cited By (1)
| 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 |
-
2010
- 2010-05-05 CN CN2010101623849A patent/CN102236988A/en active Pending
Cited By (2)
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111109 |