CN215954605U

CN215954605U - High school physics frictional force presentation device

Info

Publication number: CN215954605U
Application number: CN202122143736.2U
Authority: CN
Inventors: 罗可意; 罗可欣
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-03-04
Anticipated expiration: 2031-09-07

Abstract

The utility model belongs to the field of teaching aids, and relates to a high school physics friction force demonstration device which comprises a demonstration platform and a friction plate, wherein the right side of the front end of the demonstration platform is provided with a plurality of first accommodating grooves, the left end wall and the right end wall of each first accommodating groove are provided with splicing grooves, the left end and the right end of the friction plate are provided with splicing strips, the right side of the top of the demonstration platform is provided with a fixed groove, the front end wall and the rear end wall of the fixed groove are provided with splicing grooves which are in phase with the first accommodating grooves, the right sides of the front end and the rear end of the demonstration platform are provided with sliding grooves, sliding blocks are connected in the sliding grooves in a sliding mode, measuring rods are fixedly connected to the tops of the two sliding blocks, the left side of the top of the demonstration platform is provided with a second accommodating groove, the left side of the second accommodating groove is rotatably connected with a sliding plate, the front side and the rear side of the bottom of the sliding plate are provided with third accommodating grooves, the left sides in which are rotatably connected with supporting rods, the other ends of the supporting rods are provided with limiting blocks, and a plurality of limiting grooves are arranged in the third accommodating grooves; the device is not only good in portability, but also can utilize experimental props with different weights and friction plates with different friction coefficients to carry out comparison experiments.

Description

High school physics frictional force presentation device

Technical Field

The utility model belongs to the field of teaching aids, and particularly relates to a high school physical friction force demonstration device.

Background

The friction force is a force necessary for physical class, and the force resisting the relative motion of the objects is called friction force. The direction of the friction force is opposite to the direction of the relative movement of the object, and 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 is, the rougher the object contact surface is, the larger the generated sliding friction force is, and a friction force experiment teaching aid needs to be used for demonstrating the friction force in a physical classroom.

Traditional frictional force experiment teaching aid is bulky, and is mostly fixed, portable not, and the friction board that can not change different coefficient of friction simultaneously carries out contrast experiment, influences the experiment effect.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high school physical friction force demonstration device, which is used for solving the problems.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model relates to a high school physics friction force demonstration device, which comprises a demonstration platform and an abrasion plate, wherein the right side of the front end of the demonstration platform is provided with a plurality of first accommodating grooves, the left and right end walls of the first accommodating grooves are respectively provided with an inserting groove, the left and right ends of the abrasion plate are respectively provided with an inserting strip, the inserting strips are matched with the inserting grooves, the right side of the top of the demonstration platform is provided with a fixed groove, the front and back end walls of the fixed groove are provided with inserting grooves matched with the first accommodating grooves, the right sides of the front and back ends of the demonstration platform are respectively provided with a sliding groove, the sliding grooves are positioned above the first accommodating grooves, the sliding grooves are connected with sliding blocks in a sliding manner, the tops of the two sliding blocks are fixedly connected with a measuring rod, the left side of the top of the demonstration platform is provided with a second accommodating groove, the left side of the second accommodating groove is rotationally connected with a sliding plate, the front and back sides of the bottom of the sliding plate are respectively provided with third accommodating grooves, the left side in the third accommodating grooves are rotationally connected with a supporting rod, the bracing piece other end is equipped with the stopper, the inslot is accomodate to the second has seted up a plurality of spacing grooves, spacing groove and stopper looks adaptation.

As a preferred technical scheme of the utility model, four corners of the bottom of the demonstration table are provided with supporting legs, and rubber non-slip pads are fixedly bonded at the bottoms of the supporting legs, so that the placing stability of the device is improved.

As a preferred technical scheme, the left end and the right end of the demonstration table are fixedly connected with the hand-held rods, the anti-skidding cotton sleeves are fixedly sleeved on the hand-held rods, and the left side of the top of the sliding plate is fixedly connected with the lifting lugs, so that the device and the sliding plate can be conveniently moved.

As a preferred technical scheme of the utility model, a drawer box is inserted into the left side of the front end of the demonstration table, and a pull button is fixedly connected to the front end of the drawer box, so that experimental props with different weights can be conveniently placed.

As a preferable technical scheme, clamping convex blocks are arranged in the third accommodating groove, and fastening rubber strips are arranged on the front end wall and the rear end wall of the second accommodating groove, so that the fixing firmness of the supporting rod and the sliding plate can be effectively improved.

As a preferred technical scheme of the utility model, the demonstration table and the sliding plate are both provided with scale marks, so that experimental data are more accurate and visual.

The utility model has the following beneficial effects: take out the first friction board of accomodating the inslot, and plug in the fixed slot, mention the slide through the lifting lug, and rotate the bracing piece and make stopper and spacing groove fixed joint, it is domatic to let the slide form, and take out the experiment stage property and place the landing on the slide in the drawer box, stop on the friction board at last, the sliding action through spout and spout removes the measuring stick, and make the experimental data summary with reference to the scale mark, not only conveniently carry, the operation, and can utilize the experiment stage property of different weights, different height, the friction board of different coefficient of friction carries out contrast experiment, make the teaching quality promote.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

fig. 3 is a third schematic structural diagram of the present invention.

In the figure: 1. a demonstration table; 2. rubbing the board; 3. supporting legs; 4. a rubber non-slip mat; 5. a hand-held lever; 6. an anti-slip cotton sleeve; 7. a first receiving groove; 8. inserting grooves; 9. inserting strips; 10. a drawer box; 11. pulling the button; 12. Fixing grooves; 13. a chute; 14. a slider; 15. a measuring rod; 16. a second receiving groove; 17. a slide plate; 18. Lifting the ears; 19. a third receiving groove; 20. a support bar; 21. a limiting block; 22. clamping the convex block; 23. a limiting groove; 24. and (5) fastening the rubber strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): as shown in figures 1-3, a high school physics friction force demonstration device comprises a demonstration platform 1 and a friction plate 2, wherein the right side of the front end of the demonstration platform 1 is provided with a plurality of first accommodating grooves 7, the left and right end walls of the first accommodating grooves 7 are respectively provided with an inserting groove 8, the left and right ends of the friction plate 2 are respectively provided with an inserting strip 9, the inserting strips 9 are matched with the inserting grooves 8, the right side of the top of the demonstration platform 1 is provided with a fixed groove 12, the front and back end walls of the fixed groove 12 are provided with inserting grooves 8 which are opposite to the first accommodating grooves 7, the right sides of the front and back ends of the demonstration platform 1 are respectively provided with a sliding groove 13, the sliding grooves 13 are positioned above the first accommodating grooves 7, the sliding grooves 13 are internally and slidably connected with sliding blocks 14, the tops of the two sliding blocks 14 are fixedly connected with a measuring rod 15, the left side of the top of the demonstration platform 1 is provided with a second accommodating groove 16, the left side of the second accommodating groove 16 is rotatably connected with a sliding plate 17, the front and back two sides of the bottom of the sliding plate 17 are respectively provided with third accommodating grooves 19, the left side of the third accommodating groove 19 is rotatably connected with a support rod 20, the other end of the support rod 20 is provided with a limit block 21, a plurality of limit grooves 23 are formed in the second accommodating groove 16, and the limit grooves 23 are matched with the limit block 21.

Supporting legs 3 are arranged at four corners of the bottom of the demonstration table 1, rubber anti-skid pads 4 are fixedly bonded at the bottoms of the supporting legs 3, and the placement stability of the device is improved; both the left end and the right end of the demonstration platform 1 are fixedly connected with a portable rod 5, an anti-skid cotton sleeve 6 is fixedly sleeved on the portable rod 5, and a lifting lug 18 is fixedly connected to the left side of the top of the sliding plate 17, so that the device and the sliding plate 17 can be conveniently moved; a drawer box 10 is inserted into the left side of the front end of the demonstration table 1, and a pull button 11 is fixedly connected to the front end of the drawer box 10, so that experimental properties with different weights can be conveniently placed; a clamping convex block 22 is arranged in the third accommodating groove 19, and fastening rubber strips 24 are arranged on the front end wall and the rear end wall of the second accommodating groove 16, so that the fixing firmness of the support rod 20 and the sliding plate 17 can be effectively improved; the demonstration table 1 and the sliding plate 17 are provided with scale marks, so that experimental data are more accurate and visual.

Specifically, when the portable electronic device is used, the portable rod 5 can move the portable electronic device, the friction plate 2 in the first accommodating groove 7 is pulled out and inserted into the fixing groove 12, the sliding plate 17 is lifted through the lifting lug 18, the support rod 20 is rotated to enable the limiting block 21 to be fixedly clamped with the limiting groove 23, the sliding plate 17 forms a slope, the experimental prop is taken out from the drawer box 10 and placed on the sliding plate 17 to slide down, and finally the sliding plate 2 stops, the measuring rod 15 is moved through the sliding effect of the sliding groove 13 and the sliding groove 13, experimental data summary is made by referring to scale marks, the portable electronic device is convenient to carry and operate, and the experimental props with different weights, the friction plates 2 with different heights and different friction coefficients can be used for comparison experiments, so that the teaching quality is improved.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high school physics frictional force presentation device, includes demonstration platform (1) and friction board (2), its characterized in that: the demonstration table is characterized in that a plurality of first accommodating grooves (7) are formed in the right side of the front end of the demonstration table (1), inserting grooves (8) are formed in the left end wall and the right end wall of each first accommodating groove (7), inserting strips (9) are arranged at the left end and the right end of the friction plate (2), the inserting strips (9) are matched with the inserting grooves (8), a fixing groove (12) is formed in the right side of the top of the demonstration table (1), the inserting grooves (8) matched with the first accommodating grooves (7) are formed in the front end wall and the rear end wall of the fixing groove (12), sliding grooves (13) are formed in the right side of the front end and the rear end of the demonstration table (1), the sliding grooves (13) are located above the first accommodating grooves (7), sliding blocks (14) are connected in the sliding grooves (13) in a sliding mode, measuring rods (15) are fixedly connected to the tops of the sliding blocks (14), and a second accommodating groove (16) is formed in the left side of the top of the demonstration table (1), groove (16) left side is accomodate to the second and is rotated and be connected with slide (17), groove (19) are accomodate to the third has all been seted up to both sides around slide (17) bottom, the third is accomodate groove (19) interior left side and is rotated and be connected with bracing piece (20), the bracing piece (20) other end is equipped with stopper (21), a plurality of spacing grooves (23) have been seted up in groove (16) are accomodate to the second, spacing groove (23) and stopper (21) looks adaptation.

2. The high school physical friction demonstration device according to claim 1 wherein: the demonstration table is characterized in that supporting legs (3) are arranged at four corners of the bottom of the demonstration table (1), and rubber anti-slip pads (4) are fixedly bonded at the bottoms of the supporting legs (3).

3. The high school physical friction demonstration device according to claim 1 wherein: the demonstration table is characterized in that a portable rod (5) is fixedly connected to the left end and the right end of the demonstration table (1), an anti-skidding cotton sleeve (6) is fixedly connected to the portable rod (5) in a sleeved mode, and a lifting lug (18) is fixedly connected to the left side of the top of the sliding plate (17).

4. The high school physical friction demonstration device according to claim 1 wherein: a drawer box (10) is inserted into the left side of the front end of the demonstration table (1), and a pull button (11) is fixedly connected to the front end of the drawer box (10).

5. The high school physical friction demonstration device according to claim 1 wherein: the third is accomodate and is equipped with joint lug (22) in groove (19), both end walls all are equipped with fastening rubber strip (24) around groove (16) are accomodate to the second.

6. The high school physical friction demonstration device according to claim 1 wherein: and the demonstration table (1) and the sliding plate (17) are provided with scale marks.