CN107560763A - A kind of experimental teaching flat board dynamometer - Google Patents
A kind of experimental teaching flat board dynamometer Download PDFInfo
- Publication number
- CN107560763A CN107560763A CN201710721196.7A CN201710721196A CN107560763A CN 107560763 A CN107560763 A CN 107560763A CN 201710721196 A CN201710721196 A CN 201710721196A CN 107560763 A CN107560763 A CN 107560763A
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- China
- Prior art keywords
- flat board
- dynamometer
- electromagnet
- experimental teaching
- chute
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Abstract
The invention discloses a kind of experimental teaching flat board dynamometer, including flat board dynamometer body and slide plate, the corresponding both sides of the flat board dynamometer body surface are provided with graduated scale, the middle position of the graduated scale is provided with chute, the chute upper end is provided with electromagnet, the position of the side of flat board dynamometer body interior two is provided with slideway, the beneficial effects of the invention are as follows：The present invention devises a kind of experimental teaching flat board dynamometer, a small-sized electromagnet is mounted with original flat board dynamometer, when student finishes experiment, by object after hook is taken off, open electromagnet power supply, so that electromagnet has magnetic, and the sliding block under the pointer on chute is irony, electromagnet up has after magnetic, the position that top can be attracted to causes pointer to point to the position of zero graduation, can solve the problems, such as that student forgets to cause experimental result inaccuracy to flat board dynamometer.
Description
Technical field
The invention belongs to flat board dynamometer correlative technology field, and in particular to a kind of experimental teaching flat board dynamometer.
Background technology
It is made using the elasticity of metal and indicates instrument of the scale to the size of measuring force, is called its " dynamometer ".Dynamometer
There are a variety of structural forms, but their major part is all the flexible steel disc of bending or coil spring.Work as external force
When deforming upon elastic steel sheet or spring, indicators turn is driven by transmission mechanisms such as levers, pointer is parked on dial
The numerical value of position, as external force.There are the species such as gripe dynamometer, and spring scale is then simplest one kind of dynamometer.Use dynamometer
Object is sling vertically, when weight beam and static object, illustrates object by equilibrant force, i.e., gravity and pulling force are flat a pair
Weigh power, and size is equal objects to the pulling force of dynamometer and dynamometer to the pulling force of object active force and reaction force each other,
Equal in magnitude thus reading be exactly the gravity of testee according to F=kX (Hooke's law), stress and spring elongation into
Direct ratio.Coulomb balance：The torsion of suspension can provide a kind of method for the power for accurately measuring very little for physicist.Twisting resistance
Square is directly proportional to the torsion angle of suspension, directly proportional to 4 powers of suspension diameter, is inversely proportional with the length of suspension.Coulomb balance
Major part is a filament, and upper end is fixed, and lower end is outstanding object, and object rotates under external force, sends out wire
It is raw to reverse, measure windup-degree, it is possible to calculate external force according to law is reversed.
Problems be present in the flat board dynamometer of prior art：Present flat board dynamometer when in use, is required for every time
Flat board dynamometer is returned to zero, but student is frequent using flat board dynamometer, may in use forget to return to zero, cause
Experimental result is inaccurate.
The content of the invention
It is an object of the invention to provide a kind of experimental teaching flat board dynamometer, to solve to propose in above-mentioned background technology
The problem of zeroing.
To achieve the above object, the present invention provides following technical scheme：A kind of experimental teaching flat board dynamometer, including it is flat
Plate dynamometer body and slide plate, the corresponding both sides of the flat board dynamometer body surface are provided with graduated scale, the graduated scale
Middle position be provided with chute, the chute is internally provided with pointer, and the chute upper end is provided with electromagnet, described
The position of the side of flat board dynamometer body interior two is provided with slideway, and the slideway is internally provided with sliding block, the slide plate
Both ends are arranged on the side of sliding block.
Preferably, the centre position below the slide plate is provided with connector, and one end of the connector is provided with drag hook
Bar, the described one end of drag hook bar away from connector are provided with object hook.
Preferably, side of the slide plate away from connector is provided with spring, and location-plate is provided with above the spring,
The centre position of the location-plate is provided with pull bar, and the top of the pull bar is provided with draw ring.
Preferably, the connector is connected through a screw thread with drag hook bar.
Preferably, the electromagnet is electrically connected with battery.
Preferably, the draw ring and pull bar are integral type structure.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention devises a kind of experimental teaching flat board dynamometer, and a small electrical is mounted with original flat board dynamometer
Magnet, when student finishes experiment, by object after hook is taken off, open electromagnet power supply so that electromagnet has magnetic,
And the sliding block under the pointer on the chute is irony, after electromagnet up has magnetic, can be inhaled
The position for guiding to top causes pointer to point to the position of zero graduation, can solve student and forget to cause experiment to tie to flat board dynamometer
The problem of fruit inaccuracy.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the flat board dynamometer schematic internal view of the present invention；
In figure：1- flat board dynamometers body, 2- graduated scales, 3- chutes, 4- objects hook, 5- draw rings, 6- electromagnet, 7- pointers,
8- slide plates, 9- sliding blocks, 10- slideways, 11- springs, 12- connectors, 13- drag hooks bar, 14- pull bars, 15- location-plates.
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.
Fig. 1-2 is referred to, the present invention provides a kind of meter technical scheme：A kind of experimental teaching flat board dynamometer, including it is flat
Plate dynamometer body 1 and slide plate 8, the corresponding both sides in 1 surface of flat board dynamometer body are provided with graduated scale 2, in graduated scale 2
Between opening position be provided with chute 3, chute 3 is internally provided with pointer 7, and the upper end of chute 3 is provided with electromagnet 6, flat board dynamometer
The position of two sides of the inside of body 1 is provided with slideway 10, and slideway 10 is internally provided with sliding block 9, and the both ends of slide plate 8, which are arranged on, to be slided
The side of block 9.
In order to which the gravity of object can be measured, in of the invention, it is preferred that the centre position of the lower section of slide plate 8 is provided with connection
Body 12, one end of connector 12 are provided with drag hook bar 13, and the one end of drag hook bar 13 away from connector 12 is provided with object hook 4.
In order to which flat board dynamometer body 1 can be hung up, in the present invention, it is preferred that side of the slide plate 8 away from connector 12
Spring 11 is provided with, the top of spring 11 is provided with location-plate 15, and the centre position of location-plate 15 is provided with pull bar 14, pull bar 14
Top be provided with draw ring 5.
In order to which connector 12 is connected with drag hook bar 13, in the present invention, it is preferred that connector 12 passes through spiral shell with drag hook bar 13
Line connects.
It is magnetic in order that obtaining electromagnet 6, in the present invention, it is preferred that electromagnet 6 is electrically connected with battery.
In order to which flat board dynamometer body 1 can be hung up, in the present invention, it is preferred that draw ring 5 and pull bar 14 are integral type knot
Structure.
The operation principle and process for using of the present invention：After the present invention installs, flat board dynamometer is needed to use in student
When body 1 is tested, flat board dynamometer body 1 is hung at one first with draw ring 5, it would be desirable to which the object of measurement hangs over object
Link up with 4, and the object on object hook 4 can drive drag hook bar 13 to move down so that the sliding block 9 at the both ends of slide plate 8 is in slideway
Moved in 10, so as to drive the spring 11 being connected with slide plate 8, elastic deformation occurs, drives the positive pointer of flat board dynamometer to exist
Moved in chute 3, the final numerical value that last pointer points on graduated scale 2 is exactly the gravity of the object, finally finishes reality in student
After testing, the electromagnet 6 of the upper end of chute 3 is switched on power so that electromagnet 6 is magnetic, and attracts the sliding block under pointer 7 to be moved to top
End, finally cause pointer 7 to point to zero graduation, reach the purpose of zeroing.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of experimental teaching flat board dynamometer, including flat board dynamometer body（1）And slide plate（8）, it is characterised in that：It is described
Flat board dynamometer body（1）The corresponding both sides in surface are provided with graduated scale（2）, the graduated scale（2）Middle position set
It is equipped with chute（3）, the chute（3）Be internally provided with pointer（7）, the chute（3）Upper end is provided with electromagnet（6）, institute
State flat board dynamometer body（1）The position of internal two sides is provided with slideway（10）, the slideway（10）Be internally provided with cunning
Block（9）, the slide plate（8）Both ends be arranged on sliding block（9）Side.
A kind of 2. experimental teaching flat board dynamometer according to claim 1, it is characterised in that：The slide plate（8）Lower section
Centre position be provided with connector（12）, the connector（12）One end be provided with drag hook bar（13）, the drag hook bar
（13）Away from connector（12）One end be provided with object hook（4）.
A kind of 3. experimental teaching flat board dynamometer according to claim 1, it is characterised in that：The slide plate（8）It is remote
Connector（12）Side be provided with spring（11）, the spring（11）Top be provided with location-plate（15）, the location-plate
（15）Centre position be provided with pull bar（14）, the pull bar（14）Top be provided with draw ring（5）.
A kind of 4. experimental teaching flat board dynamometer according to claim 1 or 3, it is characterised in that：The connector
（12）With drag hook bar（13）It is connected through a screw thread.
A kind of 5. experimental teaching flat board dynamometer according to claim 1, it is characterised in that：The electromagnet（6）With
Battery is electrically connected with.
A kind of 6. experimental teaching flat board dynamometer according to claim 1, it is characterised in that：The draw ring（5）With drawing
Bar（14）For integral type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721196.7A CN107560763A (en) | 2017-08-22 | 2017-08-22 | A kind of experimental teaching flat board dynamometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721196.7A CN107560763A (en) | 2017-08-22 | 2017-08-22 | A kind of experimental teaching flat board dynamometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107560763A true CN107560763A (en) | 2018-01-09 |
Family
ID=60976166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710721196.7A Pending CN107560763A (en) | 2017-08-22 | 2017-08-22 | A kind of experimental teaching flat board dynamometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107560763A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110164262A (en) * | 2019-06-04 | 2019-08-23 | 华北水利水电大学 | A kind of physics teaching spring force demonstration equipment |
-
2017
- 2017-08-22 CN CN201710721196.7A patent/CN107560763A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110164262A (en) * | 2019-06-04 | 2019-08-23 | 华北水利水电大学 | A kind of physics teaching spring force demonstration equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180109 |