CN102235923A - Forcemeter - Google Patents
Forcemeter Download PDFInfo
- Publication number
- CN102235923A CN102235923A CN2010101624269A CN201010162426A CN102235923A CN 102235923 A CN102235923 A CN 102235923A CN 2010101624269 A CN2010101624269 A CN 2010101624269A CN 201010162426 A CN201010162426 A CN 201010162426A CN 102235923 A CN102235923 A CN 102235923A
- Authority
- CN
- China
- Prior art keywords
- forcemeter
- shell
- spring
- pull rod
- dynamometer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Stringed Musical Instruments (AREA)
Abstract
The invention discloses a forcemeter comprising a shell, a spring arranged in the spring and a pull rod, wherein one end of the spring is connected with the shell and the other end of the spring is connected with the pull rod. The forcemeter is characterized in that the shell is shaped into a square, the pull rod is shaped into a cylinder on which force scale values are marked; namely the pull rod is similar to an inner tube of a laboratory cylindrical forcemeter. The forcemeter with the structure can be used as a friction block, and the functions of a forcemeter and a friction block are both achieved; the forcemeter disclosed by the invention is simple to operate, the problem of the generation of unnecessary friction caused by the contact between the forcemeter and a friction surface can be overcome; a weight barrel hung on a fixed pulley with a rope wound on the fixed pulley is used for pulling the friction block, the quantity of small objects in the barrel can be increased and decreased as required to realize uniform motion. The forcemeter is characterized in that the experiment concepts are identical to schemes in text books and can be mastered by students easily. The forcemeter has low cost and is easy to popularize.
Description
Technical field
The present invention relates to the breadboard dynamometer of school, particularly be exclusively used in a kind of dynamometer 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 friction block is placed on the horizonal base plate, hand-held dynamometer is made linear uniform motion by the horizontal drawing friction piece of rope yarn, writing down the dynamometer reading, is exactly the friction force that friction block 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 " friction block is motionless, pulls moving base plate " having occurred, friction block 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: a kind of dynamometer is provided, make that the experimental considerations of friction force experiment is consistent with textbook, the student understands easily and move will be approaching at the uniform velocity.
The technical solution used in the present invention is: a kind of dynamometer, by shell, place in the shell and the spring that an end links to each other with shell, the pull bar that links to each other with the spring other end constitute, it is characterized in that: the profile of described shell is the tetragonal body shape.
Described pull bar is cylindric, the strong registration value of mark on the outer wall of this cylinder, and promptly this pull bar is similar to the interior pipe of cylinder dynamometer in the laboratory.
After adopting said structure, just dynamometer of the present invention can be made friction block uses: dynamometer is put on the rubbing surface, the dynamometer hook links to each other with rope yarn, rope yarn is hung with the weight bucket through walking around the fixed pulley that is fixed in base plate (or desktop edge), can adorn small objects such as iron nail, fine sand in the bucket, increase and decrease as one feels fit, pulling force size trace is adjustable, can realize the uniform motion of friction block; Self is friction block dynamometer, has avoided dynamometer to contact the puzzlement that produces irrelevant friction with base plate (or desktop).
The invention has the beneficial effects as follows: dynamometer and friction block unite two into one, and be easy and simple to handle, and experimental considerations is identical with the textbook scheme, the student is understandable, and simple structure has realized that friction block makes the realistic problem of linear uniform motion, with low cost, be easy to promote.
Description of drawings
Fig. 1 is the cut-open view of the present invention at experimental state.
Fig. 2 is a schematic perspective view of the present invention.
Among the figure: 1 shell, 2 springs, 3 pull bars, 4 pressurizing block, 5 rubbing surfaces, 6 base plates, 7 fixed pulleys, 8 weight buckets, 9 tiny weights.
Embodiment
As shown in Figures 1 and 2: dynamometer by shell 1, place in the shell 1 and the spring 2 that an end links to each other with shell, the pull bar 3 that links to each other with spring 2 other ends constitute, the profile of described shell 1 is the tetragonal body shape.Described pull bar 3 is cylindric, the strong registration value of mark on the outer wall of this cylinder.
Using method:
1, base plate 6 is put on the surface level, can places the rubbing surface 5 that changes the surface of contact degree of roughness on the base plate 6.
2, square dynamometer of the present invention is placed above the rubbing surface 5, the dynamometer hook is gone up the tether line, and rope yarn is walked around fixed pulley 7 backs of being fixed in base plate one end and hung weight bucket 9, can adorn the tiny weight 9 of increase and decrease pulling force size in the weight bucket 9, regulate what of tiny weight 9, obtain uniform motion.
3, pressurizing block 4 can be placed in the dynamometer top, changes the pressure size, the relation between research friction force and pressure size.
Claims (2)
1. dynamometer, by shell, place in the shell and the spring that an end links to each other with shell, the pull bar that links to each other with the spring other end constitute, it is characterized in that: the profile of described shell is the tetragonal body shape.
2. a kind of dynamometer as claimed in claim 1 is characterized in that: described pull bar is cylindric, the strong registration value of mark on the described cylinder outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101624269A CN102235923A (en) | 2010-05-05 | 2010-05-05 | Forcemeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101624269A CN102235923A (en) | 2010-05-05 | 2010-05-05 | Forcemeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102235923A true CN102235923A (en) | 2011-11-09 |
Family
ID=44886784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101624269A Pending CN102235923A (en) | 2010-05-05 | 2010-05-05 | Forcemeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102235923A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903283A (en) * | 2012-11-07 | 2013-01-30 | 陈廷 | Constant tension device |
| CN105489091A (en) * | 2015-11-24 | 2016-04-13 | 上海电机学院 | Horizontal loading-unloading experimental apparatus and method |
-
2010
- 2010-05-05 CN CN2010101624269A patent/CN102235923A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903283A (en) * | 2012-11-07 | 2013-01-30 | 陈廷 | Constant tension device |
| CN102903283B (en) * | 2012-11-07 | 2014-09-17 | 广东梅雁吉祥水电股份有限公司 | Constant tension device |
| CN105489091A (en) * | 2015-11-24 | 2016-04-13 | 上海电机学院 | Horizontal loading-unloading experimental apparatus and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2505821A3 (en) | Water current power generating device | |
| CN102235923A (en) | Forcemeter | |
| CN202904960U (en) | Mechanics suspension experiment apparatus with angle | |
| CN206946781U (en) | A kind of Middle School Physics frictional force experimental demonstration device | |
| CN206849344U (en) | A kind of teaching elasticity demonstration device | |
| CN203982635U (en) | A kind of teaching aid of theoretical mechanics equilibrium of couples | |
| CN107449680A (en) | Rubber Mechanics Performance Testing equipment | |
| CN203070617U (en) | A pulley block device used in physics teaching | |
| CN202049646U (en) | Two-force equilibrium research device | |
| CN205943212U (en) | Higher mathematics function demonstration teaching aid | |
| CN202084224U (en) | Friction force testing instrument | |
| CN108333104B (en) | Testing device and method for testing surface friction force of flexible material | |
| CN102236991A (en) | Friction force meter and special dynamometer | |
| CN203118300U (en) | Demonstration teaching aid for mechanics teaching | |
| CN202394439U (en) | Guide rod mechanism evolution experiment apparatus | |
| CN102236988A (en) | Friction force measuring device | |
| CN201946177U (en) | Multifunctional lever demonstration device for physical experiment | |
| CN202584500U (en) | Frictional force demonstrator with amplification indication function | |
| CN205318714U (en) | Assembly pulley mechanical efficiency measuring device | |
| CN203520711U (en) | Energy conversion demonstration instrument | |
| CN101958070A (en) | Frictional force experiment instrument | |
| CN204166761U (en) | A kind of mechanics teaching demonstration device | |
| CN203910104U (en) | Convenient and uniform pulling device for pulley block | |
| UA98335C2 (en) | Method and device for conversion of kinetic energy of fluid medium flow to useful energy | |
| CN203837911U (en) | Spring simulated load testing device |
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 |