CN209928746U - Teaching device for friction force experiment - Google Patents
Teaching device for friction force experiment Download PDFInfo
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- CN209928746U CN209928746U CN201920325902.0U CN201920325902U CN209928746U CN 209928746 U CN209928746 U CN 209928746U CN 201920325902 U CN201920325902 U CN 201920325902U CN 209928746 U CN209928746 U CN 209928746U
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Abstract
The utility model discloses a teaching device for frictional force experiment, the utility model discloses a teaching device for frictional force experiment is through setting up first friction plate and second friction plate on the body side by side, and set up first friction surface and the second friction surface that coefficient of friction is different, it holds the box to set up first weight on first friction surface, it holds the box to set up the second weight on the second friction plate, the first bracing piece of accessible and second bracing piece support first friction plate and second friction plate to same angle respectively, make first weight hold the box and hold the box with the second weight and glide simultaneously from the top of first friction plate and second friction plate respectively, can see the gliding speed of both on the friction surface of different coefficient of friction directly perceivedly, simultaneously, can also change different weights in holding the box and experiment. The concept of the friction force in the brain and sea of the students can be deepened, and a better teaching effect is generated.
Description
Technical Field
The utility model relates to a physics experiment teaching aid field, in particular to a teaching device for frictional force experiment.
Background
The force resisting the relative movement or tendency of the objects to move relative to each other is called friction. The direction of the friction force is opposite to the direction of the relative movement or the relative movement trend of the object. The friction force is divided into static friction force, rolling friction and sliding friction. When one object slides on the surface of the other object, friction, called sliding friction, is generated between the contact surfaces to block the relative movement of the two objects. The magnitude of the sliding friction force is related to the magnitude of the roughness of the contact surface and the magnitude of the pressure. The larger the pressure, the rougher the object contact surface, and the greater the sliding friction force generated. The current experiment teaching aid obtains the influence factor of frictional force through measuring the numerical value of frictional force under the different conditions mostly, and if can carry out the contrast experiment simultaneously, lets the student see frictional force size under the different conditions more directly perceivedly, so must deepen the notion of frictional force in the student's brain sea, produces better teaching effect.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model aims to provide a contrast experiment simultaneously, more directly perceived, the better frictional force experiment teaching device of teaching effect.
A teaching device for friction force experiments comprises a body, wherein a first friction plate and a second friction plate are arranged on the body, the first friction plate and the second friction plate are arranged side by side, a first groove matched with the first friction plate and a second groove matched with the second friction plate are further arranged on the body, the bottom end of the first friction plate is rotatably connected with the first groove, the first friction plate can be rotatably accommodated in the first groove, the bottom end of the second friction plate is rotatably connected with the second groove, the second friction plate can be rotatably accommodated in the second groove, a first supporting rod for supporting the first friction plate is arranged in the first groove, the first supporting rod is further used for adjusting the angle of the first friction plate, and a second supporting rod for supporting the second friction plate is arranged in the second groove, the second bracing piece still is used for adjusting the angle of second friction plate, be equipped with first friction surface on the first friction plate, be equipped with the second friction surface on the second friction plate, the coefficient of friction of first friction surface and second friction surface is different, the top of first friction plate is equipped with first through wires hole, first line and first weight and holds the box, the one end of first acting as go-between with first weight holds the box and connects, and the other end passes first through wires hole, the top of second friction plate is equipped with second through wires hole, second line and second weight and holds the box, the one end that the second acted as go-between with the second weight holds the box and connects, and the other end passes the second through wires hole.
As a further improvement of the present invention, the first friction plate is provided with a first supporting groove matched with the first supporting rod, and the first supporting rod is used for matching with the first supporting groove to support the first friction plate; and a second support groove matched with the second support rod is arranged on the second friction plate, and the second support rod is matched with the second support groove to support the second friction plate.
As a further improvement of the present invention, the number of the first supporting grooves is plural, and the plural first supporting grooves are used for cooperating with the first supporting rods to support the first friction plate to different angles; the number of the second supporting grooves is multiple, and the second supporting grooves are used for being matched with the second supporting rod to support the second friction plate to different angles.
As a further improvement of the present invention, a first accommodating groove matched with the first supporting rod is arranged in the first groove, and the first supporting rod can rotate and be accommodated in the first accommodating groove; and a second accommodating groove matched with the second supporting rod is formed in the second groove, and the second supporting rod can rotate and be accommodated in the second accommodating groove.
As a further improvement of the utility model, the structure of the first supporting rod and the second supporting rod is the same.
As a further improvement, the bottom of the first friction plate is further provided with a first buffer sponge strip, and the bottom of the second friction plate is further provided with a second buffer sponge strip.
As a further improvement, one side of the first buffer sponge strip and the second buffer sponge strip is provided with a stopper.
As a further improvement of the utility model, the first string of wire on be connected with first through wires hole complex first sponge piece, the second string of wire on be connected with second through wires hole complex second sponge piece.
The utility model has the advantages that:
the utility model discloses a teaching device for frictional force experiment is through setting up first friction plate and second friction plate on the body side by side, and set up first friction surface and the second friction surface that coefficient of friction is different, it holds the box to set up first weight on first friction surface, it holds the box to set up the second weight on the second friction plate, the first bracing piece of accessible and second bracing piece support first friction plate and second friction plate to same angle respectively, it holds the box and the second weight holds the box and glides simultaneously from the top of first friction plate and second friction plate respectively to make first weight hold the box, can see both gliding speed on the friction surface of different coefficient of friction directly perceivedly, and simultaneously, can also change different weights in the weight holds the box and experiment. The concept of the friction force in the brain and sea of the students can be deepened, and a better teaching effect is generated.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a first schematic structural diagram of a teaching device for friction force experiments in an embodiment of the present invention;
fig. 2 is a schematic view of a part of the structure of the teaching device for friction experiment in the embodiment of the present invention.
Description of the labeling: 100. a body; 10. a first friction plate; 11. a first support groove; 12. a first friction face; 13. a first weight housing box; 14. a first threading seat; 15. a first threading hole; 16. a first pull wire; 17. a first sponge block; 18. a first cushioning sponge strip; 20. a second friction plate; 22. a second friction face; 23. a second weight housing box; 24. a second threading seat; 25. a second threading hole; 26. a second pull wire; 27. a second sponge block; 28. a second cushioning sponge strip; 30. a first groove; 31. a first accommodating groove; 32. a first support bar; 40. a second groove; 41. a second accommodating groove; 42. a second support bar; 50. a weight; 60. and a limiting block.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
As shown in fig. 1-2, for the teaching device for friction force experiment in the embodiment of the present invention, the teaching device for friction force experiment includes a body 100, a first friction plate 10 and a second friction plate 20 are disposed on the body 100, the first friction plate 10 and the second friction plate 20 are disposed side by side, the body 100 is further provided with a first groove 30 engaged with the first friction plate 10 and a second groove 40 engaged with the second friction plate 20, the bottom end of the first friction plate 10 is rotatably connected to the first groove 30, the first friction plate 10 is rotatable to be accommodated in the first groove 30, the bottom end of the second friction plate 20 is rotatably connected to the second groove 40, and the second friction plate 20 is rotatable to be accommodated in the second groove 40.
The first friction plate 10 is provided with a first supporting groove 11, the first groove 30 is internally provided with a first accommodating groove 31, the first accommodating groove 31 is internally provided with a first supporting rod 32, the first supporting rod 32 can rotate and is accommodated in the first accommodating groove 31, and the first supporting rod 32 is used for matching with the first supporting groove 11 to support the first friction plate 10; the number of the first supporting grooves 11 is plural, and the plural first supporting grooves 11 are used for matching with the first supporting rods 32 to support the first friction plate 10 to different angles;
the second friction plate 20 is provided with a second support groove, the second support groove has the same structure as the first support groove 11, a second accommodating groove 41 is arranged in the second groove 40, a second support rod 42 is arranged in the second accommodating groove 41, the first support rod 32 and the second support rod 42 have the same structure, the second support rod can rotate and is accommodated in the second accommodating groove 41, and the second support rod 42 is used for matching with the second support groove to support the second friction plate 20; the number of the second supporting grooves is plural, and the plural second supporting grooves are used for being matched with the second supporting rod 42 to support the second friction plate 20 to different angles.
The first friction plate 10 is provided with a first friction surface 12, the second friction plate 20 is provided with a second friction surface 22, the friction coefficients of the first friction surface 12 and the second friction surface 12 are different, the top end of the first friction plate 10 is provided with a first threading seat 14, a first pull wire 16 and a first weight containing box 13, the first threading seat 14 is provided with a first threading hole 15, one end of the first pull wire 16 is connected with the first weight containing box 13, the other end of the first pull wire passes through the first threading hole 25 and is connected with a first sponge block 17 matched with the first threading hole 15, and the first sponge block 17 is used for preventing the first pull wire 16 from being pulled out of the first threading hole 15 completely when the first weight containing box 13 slides downwards; the top of second friction plate 20 is equipped with second threading seat 24, second stay wire 26 and second weight and holds box 23, be equipped with second through wires hole 25 on the second threading seat 24, the one end of second stay wire 26 is connected with second weight holds box 23, the other end passes second through wires hole 25 to be connected with second sponge piece 27 with second through wires hole 25 complex, second sponge piece 27 is used for preventing to pull out second stay wire 26 second through wires hole 25 completely when second weight holds box 23 gliding. The first weight containing box 13 and the second weight containing box 23 are used to contain the weight 50.
The bottom end of the first friction plate 10 is also provided with a first buffer sponge strip 18, and the bottom end of the second friction plate 20 is also provided with a second buffer sponge strip 28, so that the first weight accommodating box 13 and the second weight accommodating box 23 can slide down to the bottom end to play a buffer role. One side of first buffering sponge strip 18 and second buffering sponge strip 28 still is equipped with stopper 60, prevents that first weight from holding box 13 and second weight from holding box 23 landing to ground, causes the damage.
The utility model has the advantages that:
(1) the utility model discloses a teaching device for frictional force experiment is through setting up first friction plate and second friction plate on the body side by side, and set up first friction surface and the second friction surface that coefficient of friction is different, it holds the box to set up first weight on first friction surface, it holds the box to set up the second weight on the second friction plate, the first bracing piece of accessible and second bracing piece support first friction plate and second friction plate to same angle respectively, it holds the box and the second weight holds the box and glides simultaneously from the top of first friction plate and second friction plate respectively to make first weight hold the box, can see both gliding speed on the friction surface of different coefficient of friction directly perceivedly, and simultaneously, can also change different weights in the weight holds the box and experiment. The concept of the friction force in the brain and sea of the students can be deepened, and a better teaching effect is generated.
(2) Meanwhile, the friction plate can be supported to different angles by the aid of the support grooves, and the friction force on the friction plate can be tested under different angle conditions.
The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (8)
1. The utility model provides a teaching device for frictional force experiment, includes the body, its characterized in that: the body is provided with a first friction plate and a second friction plate which are arranged side by side, the body is also provided with a first groove matched with the first friction plate and a second groove matched with the second friction plate, the bottom end of the first friction plate is rotatably connected with the first groove, the first friction plate can be rotatably accommodated in the first groove, the bottom end of the second friction plate is rotatably connected with the second groove, the second friction plate can be rotatably accommodated in the second groove, the first groove is internally provided with a first supporting rod for supporting the first friction plate, the first supporting rod is also used for adjusting the angle of the first friction plate, the second groove is internally provided with a second supporting rod for supporting the second friction plate, and the second supporting rod is also used for adjusting the angle of the second friction plate, be equipped with first friction surface on the first friction plate, be equipped with the second friction surface on the second friction plate, the coefficient of friction of first friction surface and second friction surface is different, the top of first friction plate is equipped with first through wires hole, first acting as go-between and first weight holds the box, the one end of first acting as go-between with first weight holds the box and connects, and the other end passes first through wires hole, the top of second friction plate is equipped with second through wires hole, second acting as go-between and second weight holds the box, the one end that the second acted as go-between with the second weight holds the box and connects, and the other end passes the second through wires hole.
2. The teaching device for the friction force experiment as recited in claim 1, wherein said first friction plate is provided with a first supporting groove engaged with said first supporting rod, said first supporting rod is adapted to engage with said first supporting groove to support said first friction plate; and a second support groove matched with the second support rod is arranged on the second friction plate, and the second support rod is matched with the second support groove to support the second friction plate.
3. The teaching device for friction force experiment as claimed in claim 2, wherein the number of said first supporting slots is plural, and plural said first supporting slots are used for cooperating with said first supporting bars to support said first friction plate to different angles; the number of the second supporting grooves is multiple, and the second supporting grooves are used for being matched with the second supporting rod to support the second friction plate to different angles.
4. The teaching device for the friction force experiment as claimed in claim 2, wherein a first receiving groove matched with the first supporting rod is arranged in the first groove, and the first supporting rod can rotate and is received in the first receiving groove; and a second accommodating groove matched with the second supporting rod is formed in the second groove, and the second supporting rod can rotate and be accommodated in the second accommodating groove.
5. Teaching device for friction force experiments according to claim 2, wherein the first and second support bars are of identical construction.
6. The teaching device for the friction force experiment as recited in claim 1, wherein a first buffering sponge strip is further disposed at the bottom end of the first friction plate, and a second buffering sponge strip is further disposed at the bottom end of the second friction plate.
7. The teaching device for the friction force experiment as recited in claim 6, wherein a limiting block is further arranged on one side of the first buffering sponge strip and one side of the second buffering sponge strip.
8. The teaching device for the friction force experiment as claimed in claim 1, wherein a first sponge block matched with the first threading hole is connected to the first threading wire, and a second sponge block matched with the second threading hole is connected to the second threading wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920325902.0U CN209928746U (en) | 2019-03-14 | 2019-03-14 | Teaching device for friction force experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920325902.0U CN209928746U (en) | 2019-03-14 | 2019-03-14 | Teaching device for friction force experiment |
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| CN209928746U true CN209928746U (en) | 2020-01-10 |
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| CN201920325902.0U Active CN209928746U (en) | 2019-03-14 | 2019-03-14 | Teaching device for friction force experiment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112017511B (en) * | 2020-10-19 | 2021-02-09 | 苏州巴涛信息科技有限公司 | A frictional force demonstration teaching aid for physical experiment |
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2019
- 2019-03-14 CN CN201920325902.0U patent/CN209928746U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112017511B (en) * | 2020-10-19 | 2021-02-09 | 苏州巴涛信息科技有限公司 | A frictional force demonstration teaching aid for physical experiment |
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