CN210865279U

CN210865279U - Physical friction experiment demonstration instrument

Info

Publication number: CN210865279U
Application number: CN201921431510.9U
Authority: CN
Inventors: 陈锦莹
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-06-26
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a physics friction experiment demonstration appearance, the device comprises a device body, the utility model discloses a tip at the bottom plate articulates through the pivot has four fly leafs, the upper surface of fly leaf is provided with first friction plate respectively through the slider, the second friction plate, third friction plate and fourth friction plate, still be provided with the protractor between two adjacent friction plates, can be through the slope of the accurate adjustment fly leaf of protractor, it is nimble convenient to change the friction plate in addition, can realize the same roughness through the device, different slopes and different roughness, the big or small experiment of the same slope frictional force, through contrast test, the better observation and the judgement of the student of being convenient for, can accomodate experimental facilities in addition, make things convenient for mr to carry, be favorable to popularizing and promoting.

Description

Physical friction experiment demonstration instrument

Technical Field

The utility model relates to a high school student classroom education technical field, in particular to physical friction experiment demonstration appearance.

Background

In the high school physics teaching, friction is a teaching key point and is also a teaching difficulty, when learning the magnitude relation between sliding friction and maximum static friction, students understand the knowledge based on the teaching of teachers, when comparing the magnitude of maximum static friction and sliding friction, students are difficult to show the magnitude relation, the physics course is the most painful course of many students and is one of the most difficult courses to learn, wherein the tribology almost runs through the whole physics course, so that the understanding of the tribology is very important learning content, the imagination of some students is poor, and the kinetic knowledge about friction described by teachers is thought to be imaginable in the brain, so that a friction teaching demonstration instrument is needed.

However, most of the demonstration instruments lack the contrast of the movement between the objects, so that students can hardly see what difference exists in the movement process of the objects bearing different forces, and therefore certain defects exist.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a physical friction experiment demonstration appearance can effectively solve the problem in the background art.

In order to realize the purpose, the technical scheme adopted by the utility model is as follows:

the physical friction experiment demonstration instrument comprises a device main body, a bottom plate is fixedly arranged on the device main body, an experimental equipment placing box is fixedly arranged above the bottom plate, an upper cover is hinged above the experimental equipment placing box through a hinge, the left side of the experimental equipment placing box is fixedly provided with a rubber buffer pad, the left side and the right side of the device main body are fixedly provided with side plates, the end part of the bottom plate is hinged with four movable plates through a rotating shaft, the upper surfaces of the movable plates are respectively provided with a first friction plate, a second friction plate, a third friction plate and a fourth friction plate through sliding blocks, the lower surface of the movable plate is fixedly provided with a plurality of clamping grooves, support columns with the same number as the clamping grooves are fixedly arranged below the movable plate, the bottom plate is fixedly provided with two protractor placing grooves, and protractors are inserted into the protractor placing grooves.

As a preferred technical scheme of this practical, the pivot is powerful damping pivot.

As an optimal technical scheme of this practical, the slider is T shape slider, fixed being provided with on the fly leaf with slider assorted spout.

As an optimized technical scheme of this utility model, the roughness of first friction board and third friction board is the same, the roughness of second friction board and fourth friction board is the same, first friction board and second friction board roughness are inequality.

As an optimized technical scheme of this utility model, the friction plate of other roughness is placed to the experimental apparatus placing box.

As an optimal technical scheme of this utility model, the junction of bottom plate and fly leaf does not have the arch.

Compared with the prior art, this practicality has following beneficial effect: the utility model discloses a tip at the bottom plate articulates through the pivot has four fly leafs, the upper surface of fly leaf is provided with first friction plate respectively through the slider, the second friction plate, third friction plate and fourth friction plate, still be provided with the protractor between two adjacent friction plates, can be through the slope of the accurate adjustment fly leaf of protractor, it is nimble convenient to change the friction plate in addition, can realize the roughness the same through the device, different slopes and different roughness, the big or small experiment of the same slope frictional force, through contrast test, be convenient for the better observation and the judgement of student, can accomodate experimental facilities in addition, make things convenient for mr to carry, be favorable to popularizing and promoting.

Drawings

FIG. 1 is a schematic view of the overall structure of the physical friction experiment demonstration instrument of the present application;

FIG. 2 is a top view of the physical friction experiment demonstration instrument of the present application;

FIG. 3 is a schematic view of the movable plate structure of the physical friction experiment demonstration instrument of the present application;

in the figure: 1. a device main body; 2. a base plate; 3. an experimental equipment placing box; 4. a hinge; 5. an upper cover; 6. a rubber cushion pad; 7. a side plate; 8. a rotating shaft; 9. a movable plate; 10. a slider; 11. a first friction plate; 12. a second friction plate; 13. a third friction plate; 14. a fourth friction plate; 15. a support pillar; 16. a protractor placing groove; 17. a protractor; 18. screens groove.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described below by combining with the specific embodiments.

As shown in fig. 1-3, the physical friction experiment demonstration instrument comprises an apparatus main body 1, a bottom plate 2 is fixedly arranged on the apparatus main body 1, an experimental device placing box 3 is fixedly arranged above the bottom plate 2, an upper cover 5 is hinged above the experimental device placing box 3 through hinges 4, a rubber buffer 6 is fixedly arranged on the left side of the experimental device placing box 3, side plates 7 are fixedly arranged on the left and right sides of the apparatus main body 1, four movable plates 9 are hinged at the end parts of the bottom plate 2 through rotating shafts 8, the upper surface of each movable plate 9 is respectively provided with a first friction plate 11, a second friction plate 12, a third friction plate 13 and a fourth friction plate 14 through sliding blocks 10, a plurality of clamping grooves 18 are fixedly arranged on the lower surface of each movable plate 9, supporting columns 15 with the same number as the clamping grooves 18 are fixedly arranged below the movable plates 9, two protractor placing grooves 16 are fixedly arranged on the bottom plate 2, and protractors 17 are inserted into the protractor placing grooves 16.

In this embodiment, preferably, the rotating shaft 8 is a strong damping rotating shaft.

In this embodiment, preferably, the sliding block 10 is a T-shaped sliding block, and the movable plate 9 is fixedly provided with a sliding groove matched with the sliding block 10.

In this embodiment, preferably, the roughness of the first friction plate 11 is the same as that of the third friction plate 13, the roughness of the second friction plate 12 is the same as that of the fourth friction plate 14, and the roughness of the first friction plate 11 is different from that of the second friction plate 12.

In this embodiment, it is preferable that friction plates having other roughness are placed in the test material placing box 3.

In this embodiment, preferably, the connection between the bottom plate 2 and the movable plate 9 has no protrusion.

It should be noted that, when the physical friction experiment demonstration instrument is used, the end of the bottom plate 2 is hinged with four movable plates 9 through a rotating shaft 8, the rotating shaft 8 is a strong damping rotating shaft, the upper surface of the movable plate 9 is respectively provided with a first friction plate 11, a second friction plate 12, a third friction plate 13 and a fourth friction plate 14 through a slider 10, the roughness of the first friction plate 11 and the roughness of the third friction plate 13 are the same, the roughness of the second friction plate 12 and the roughness of the fourth friction plate 14 are the same, the roughness of the first friction plate 11 and the roughness of the second friction plate 12 are different, a protractor 17 is further arranged between two adjacent friction plates, the gradient of the movable plate 9 can be accurately adjusted through the protractor 17, in addition, the friction plates can be flexibly and conveniently replaced, and the device can realize the same roughness, different gradients and different roughness, The big or small experiment of the same slope frictional force through contrast test, the better observation of the student of being convenient for and judgement can be accomodate experimental facilities after the experiment finishes, then utilize screens groove 18 with fly leaf 9 buckle on support column 15, prevent that fly leaf 9 from removing, guarantee simultaneously that fly leaf 9 keeps the level, make things convenient for mr to carry, are favorable to popularizing and promoting.

The foregoing shows and describes the general principles and features of the present invention and its advantages. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the present invention is defined by the appended claims and equivalents thereof.

Claims

1. Physical friction experiment demonstration appearance, including device main part (1), its characterized in that: the device is characterized in that a bottom plate (2) is fixedly arranged on a device main body (1), an experimental equipment placing box (3) is fixedly arranged above the bottom plate (2), an upper cover (5) is hinged above the experimental equipment placing box (3) through a hinge (4), a rubber buffer (6) is fixedly arranged on the left side of the experimental equipment placing box (3), side plates (7) are fixedly arranged on the left side and the right side of the device main body (1), the end part of the bottom plate (2) is hinged with four movable plates (9) through a rotating shaft (8), the upper surface of each movable plate (9) is respectively provided with a first friction plate (11), a second friction plate (12), a third friction plate (13) and a fourth friction plate (14) through a sliding block (10), a plurality of clamping grooves (18) are fixedly arranged on the lower surface of each movable plate (9), and supporting columns (15) with the same number as the clamping grooves (18) are fixedly arranged below the movable plates (9, the bottom plate (2) is fixedly provided with two protractor placing grooves (16), and protractors (17) are inserted into the protractor placing grooves (16).

2. The physical friction experiment demonstration instrument according to claim 1, characterized in that: the rotating shaft (8) is a strong damping rotating shaft.

3. The physical friction experiment demonstration instrument according to claim 1, characterized in that: the sliding block (10) is a T-shaped sliding block, and a sliding groove matched with the sliding block (10) is fixedly arranged on the movable plate (9).

4. The physical friction experiment demonstration instrument according to claim 1, characterized in that: the roughness of the first friction plate (11) is the same as that of the third friction plate (13), the roughness of the second friction plate (12) is the same as that of the fourth friction plate (14), and the roughness of the first friction plate (11) is different from that of the second friction plate (12).

5. The physical friction experiment demonstration instrument according to claim 1, characterized in that: friction plates with other roughness are placed in the experimental device placing box (3).

6. The physical friction experiment demonstration instrument according to claim 1, characterized in that: the joint of the bottom plate (2) and the movable plate (9) is not provided with a bulge.