CN214312301U

CN214312301U - Gravity acceleration demonstration teaching aid for physics teaching

Info

Publication number: CN214312301U
Application number: CN202120510307.1U
Authority: CN
Inventors: 徐秋风
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-09-28
Anticipated expiration: 2031-03-10

Abstract

The utility model belongs to the technical field of teaching equipment technique and specifically relates to a gravity acceleration demonstrates teaching aid for physical teaching, including timing base, support frame and test ball, the front end fixedly connected with numerical display screen of timing base, the upper end rear side fixedly connected with tachymeter of timing base, the upper end fixedly connected with main scale pole of tachymeter, the inboard sliding connection of main scale pole has vice chi pole, the upper end fixedly connected with support frame of vice chi pole, the inside fixedly connected with dead lever of support frame, the inboard sliding connection of dead lever has the fly leaf, the inboard fixedly connected with splint of fly leaf. The utility model discloses in, through numerical display screen, tachymeter and the splint that set up, the effect that utilizes splint makes the test ball can stable installation to speed through the tachymeter to the speed of test ball, utilize numerical display screen to show the speed and the time of test ball simultaneously, can be clear and definite demonstrate the acceleration of gravity of test ball.

Description

Gravity acceleration demonstration teaching aid for physics teaching

Technical Field

The utility model relates to a teaching equipment technical field specifically is a gravity acceleration demonstrates teaching aid for physical teaching.

Background

With the development of society, the application of gravity acceleration is more and more extensive, and the acceleration of gravity to the object of free fall is called gravity acceleration. If the mass of the object is expressed in m and the acceleration of gravity is expressed in G, the gravity G can be expressed as G = mg. The gravity acceleration is a basic vector in geophysical research and is an important parameter which needs to be considered when a general mechanical system is subjected to mechanical analysis, and when the precision requirement is not very high and the error caused by processing the gravity acceleration as a constant is small, the gravity anomaly can be ignored, and the calculated amount can be reduced to a certain extent.

In the prior art, gravity acceleration data cannot be clearly displayed when a gravity acceleration demonstration teaching aid is used, so that the test precision of the gravity acceleration demonstration data is influenced, and the use of teaching demonstration is inconvenient; and the height of the falling object can not be accurately adjusted in the gravity acceleration demonstration process, so that the gravity acceleration teaching demonstration with different heights can not be effectively carried out, and the use of the teaching demonstration is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gravity acceleration demonstrates teaching aid for physical teaching to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a gravity acceleration demonstration teaching aid for physical teaching comprises a timing base, a support frame and a test ball, wherein a numerical display screen is fixedly connected to the front end of the timing base, a velocimeter is fixedly connected to the rear side of the upper end of the timing base, a main rod is fixedly connected to the upper end of the velocimeter, an auxiliary rod is slidably connected to the inner side of the main rod, a support frame is fixedly connected to the upper end of the auxiliary rod, a fixed rod is fixedly connected to the inner portion of the support frame, a movable plate is slidably connected to the inner side of the fixed rod, a clamping plate is fixedly connected to the inner side of the movable plate, the test ball is slidably connected to the inner side of the clamping plate, a transmission rod is rotatably connected to the upper end of the movable plate, a pressing plate is rotatably connected to the upper end of the transmission rod, a gear is rotatably connected to the rear side of the upper end of the main rod, a rotary disc is fixedly connected to the left end of the gear, and the rotary disc is rotatably connected with the main rod, the front end of the gear is meshed with a rack which is fixedly connected with the auxiliary ruler rod.

Preferably, the upper end fixedly connected with start button of support frame, electric connection between start button and the numerical display screen.

Preferably, the upper end fixedly connected with of timing base closes the button, close electric connection between button and the numerical display screen.

Preferably, the surface of the fixed rod is externally coated with two springs, and the springs are symmetrically arranged about the central axis of the support frame.

Preferably, the front end fixedly connected with of tachymeter tests the speed the camera, electric connection between the camera and the numerical display screen test the speed of tachymeter front end.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, through numerical display screen, tachymeter and the splint that set up, utilize the effect of splint to make the test ball can stably install in splint inboard, and through the press board that sets up make the test ball can freely fall, and through the tachymeter to test the speed before the test ball falls to the ground, utilize numerical display screen to show the speed and the time of falling to the ground of test ball simultaneously, can be clear-and-definite demonstrate the acceleration of gravity of test ball;

2. the utility model discloses in, through gear, carousel and the rack that sets up, utilize the rotation of carousel to make the gear can rotate to make the rack can reciprocate, and then make the rack can drive vice chi pole and reciprocate, make the height of falling to the ground of test ball can obtain adjusting, be convenient for carry out the acceleration of gravity test demonstration of co-altitude to the test ball.

Drawings

Fig. 1 is a schematic view of the overall installation structure of the present invention;

fig. 2 is a left side view of the mounting structure of fig. 1 according to the present invention.

In the figure: 1. a timing base; 2. a numerical value display screen; 3. a velocimeter; 4. a main scale rod; 5. an auxiliary scale rod; 6. a support frame; 7. fixing the rod; 8. a movable plate; 9. a splint; 10. testing the ball; 11. a transmission rod; 12. pressing a plate; 13. a gear; 14. a turntable; 15. a rack; 16. a start button; 17. a close button; 18. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution:

a gravity acceleration demonstration teaching aid for physical teaching comprises a timing base 1, a support frame 6 and a test ball 10, wherein a numerical display screen 2 is fixedly connected to the front end of the timing base 1, a velocimeter 3 is fixedly connected to the rear side of the upper end of the timing base 1, a main ruler rod 4 is fixedly connected to the upper end of the velocimeter 3, an auxiliary ruler rod 5 is slidably connected to the inner side of the main ruler rod 4, the support frame 6 is fixedly connected to the upper end of the auxiliary ruler rod 5, a fixed rod 7 is fixedly connected to the inside of the support frame 6, a movable plate 8 is slidably connected to the inner side of the fixed rod 7, a clamp plate 9 is fixedly connected to the inner side of the movable plate 8, the test ball 10 is slidably connected to the inner side of the clamp plate 9, a transmission rod 11 is rotatably connected to the upper end of the movable plate 8, a pressing plate 12 is rotatably connected to the upper end of the transmission rod 11, a gear 13 is rotatably connected to the rear side of the upper end of the main ruler rod 4, and a rotary table 14 is fixedly connected to the left end of the gear 13, the rotary table 14 is rotatably connected with the main ruler rod 4, the front end of the gear 13 is meshed and connected with a rack 15, and the rack 15 is fixedly connected with the auxiliary ruler rod 5.

The upper end of the support frame 6 is fixedly connected with a starting button 16, the starting button 16 is electrically connected with the numerical display screen 2, so that the falling start time of the test ball 10 can be conveniently timed, and the falling time of the test ball 10 can be accurately calculated; the upper end of the timing base 1 is fixedly connected with a closing button 17, the closing button 17 is electrically connected with the numerical display screen 2, the landing time of the test ball 10 can be conveniently calculated, and therefore the falling time of the test ball 10 can be quickly and accurately calculated; the surface of the fixed rod 7 is coated with two springs 18, the number of the springs 18 is two, the springs 18 are symmetrically arranged about the central axis of the support frame 6, so that the clamping plate 9 can automatically move inwards, and the clamping plate 9 can stably mount the test ball 10; the front end fixedly connected with of tachymeter 3 tests the speed the camera, and the 3 front ends of tachymeter test the speed between camera and the numerical display screen 2 electric connection, are convenient for test the speed before test ball 10 lands to can demonstrate speed through numerical display screen 2.

The working process is as follows: this device adopts indoor 220V power to supply power when using, when carrying out physics teaching acceleration of gravity demonstration, switches on the device to install test ball 10 in splint 9 inboardly, rotate carousel 14 simultaneously, make gear 13 drive rack 15 remove, thereby make rack 15 can drive vice chi pole 5 and reciprocate, and then can adjust the falling body height of test ball 10. And after the height adjustment is completed, the pressing plate 12 is pressed downwards, so that the driving rod 11 drives the movable plate 8 to move outwards, thereby moving the clamping plate 9 outwards and compressing the spring 18. Make simultaneously and press board 12 to press start button 16, make the device begin the timing, and then make test ball 10 do the motion of free fall, and utilize tachymeter 3 to detect the translation velocity of test ball 10 before test ball 10 falls to the ground, and make close button 17 stop the timing after test ball 10 falls on close button 17, and carry out numerical value display through numerical value display screen 2 to the free fall speed and the time of falling to the ground of test ball 10, the teaching demonstration of the free fall of being convenient for, and will fall to the ground height, fall to the ground speed and the time of falling to the ground calculates, thereby can be fast accurate obtain the free fall numerical value of test ball 10, simultaneously can reduce teaching equipment use cost through simple structure, the use of the teaching articles for use of being convenient for.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a gravity acceleration demonstrates teaching aid for physical teaching, includes timing base (1), support frame (6) and test ball (10), its characterized in that: the front end of the timing base (1) is fixedly connected with a numerical display screen (2), the rear side of the upper end of the timing base (1) is fixedly connected with a velocimeter (3), the upper end of the velocimeter (3) is fixedly connected with a main ruler rod (4), the inner side of the main ruler rod (4) is connected with an auxiliary ruler rod (5) in a sliding way, the upper end of the auxiliary ruler rod (5) is fixedly connected with a supporting frame (6), the inside of the supporting frame (6) is fixedly connected with a fixed rod (7), a movable plate (8) is connected to the inner side of the fixed rod (7) in a sliding manner, a clamping plate (9) is fixedly connected to the inner side of the movable plate (8), the inner side of the clamping plate (9) is connected with a test ball (10) in a sliding manner, the upper end of the movable plate (8) is rotatably connected with a transmission rod (11), and the upper end of the transmission rod (11) is rotatably connected with a pressing plate (12); the upper end rear side of the main ruler rod (4) is rotatably connected with a gear (13), the left end of the gear (13) is fixedly connected with a rotary table (14), the rotary table (14) is rotatably connected with the main ruler rod (4), the front end of the gear (13) is meshed with a rack (15), and the rack (15) is fixedly connected with the auxiliary ruler rod (5).

2. The gravity acceleration demonstration teaching aid for physics teaching of claim 1, characterized in that: the upper end fixedly connected with start button (16) of support frame (6), electric connection between start button (16) and numerical display screen (2).

3. The gravity acceleration demonstration teaching aid for physics teaching of claim 1, characterized in that: the upper end fixedly connected with of timing base (1) closes button (17), electric connection between close button (17) and numerical display screen (2).

4. The gravity acceleration demonstration teaching aid for physics teaching of claim 1, characterized in that: the surface of the fixed rod (7) is externally coated with two springs (18), and the springs (18) are symmetrically arranged around the central axis of the support frame (6).

5. The gravity acceleration demonstration teaching aid for physics teaching of claim 1, characterized in that: the front end fixedly connected with of tachymeter (3) tests the speed the camera, electric connection between the camera and numerical display screen (2) of testing the speed of tachymeter (3) front end.