Simple physics teaching aid

Abstract

The utility model relates to the technical field of physics teaching aids, and discloses a simple physics teaching aid which comprises a rack, and a demonstration mechanism is arranged in the rack. The demonstration mechanism comprises a moving plate, the bottom surface of the moving plate is in contact with the inner bottom wall of the rack, two groups of test bottles are clamped in the moving plate, a rack plate is fixedly mounted on the back surface of the moving plate, a rotating motor is arranged below the rack, and the power output end of the rotating motor penetrates through the rack and is fixedly provided with a connecting gear; the outer surface of the connecting gear is meshed with the back face of the rack plate, two air cylinders are fixedly installed on the inner top wall of the rack, a connecting plate is fixedly installed at the telescopic ends of the two air cylinders, a rotating motor is fixedly installed on the bottom face of the connecting plate, and a rotating table is fixedly installed at the power output end of the rotating motor. According to the simple physics teaching aid, the rack and the demonstration mechanism are arranged, so that a teacher can conveniently demonstrate the buoyancy of weights with different masses in different solutions.

Description

Technical Field

[0001] The utility model relates to the technical field of physics teaching aids, in particular to a simple physics teaching aid. Background Art

[0002] Buoyancy is one of the important contents of middle school physics courses, but this part of the content is relatively abstract. It is difficult for teachers to express it clearly using only words during the teaching process, and it is not easy for students to understand it either. Therefore, teaching aids are needed to assist teaching.

[0003] The utility model with the existing authorization announcement number CN217718886U discloses a buoyancy demonstration device for junior high school physics teaching, including a base plate, a pillar fixedly installed at the bottom end of the base plate, a water storage tank fixedly installed on the left side of the top of the base plate, a liquid level gauge fixedly installed on the left side of the water storage tank, and a liquid filling port fixedly installed on the top of the water storage tank.

[0004] The above technical solution is adopted to solve the problems of the existing buoyancy demonstration device for junior high school physics teaching, which is too complicated to operate and has too many demonstration steps. However, when the above technical solution is used, the device is relatively simple. Therefore, when the teacher needs to place weights of different masses in different solutions for buoyancy teaching, the solution inside the test box needs to be poured and replaced, which increases the difficulty of operation for the teacher, makes the teacher's demonstration time longer, and reduces the practicality of the device.

[0005] Therefore, those skilled in the art provide a simple physics teaching tool to solve the problems raised in the above background technology. Utility Model Content

[0006] The utility model aims to provide a simple physics teaching tool to solve the problem of placing weights of different masses in different solutions for demonstration by teachers in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A simple physics teaching tool comprises a frame, wherein a demonstration mechanism is arranged inside the frame;

[0009] The demonstration mechanism includes a moving plate, the bottom surface of the moving plate is in contact with the inner bottom wall of the frame, two groups of test bottles are clamped inside the moving plate, a rack plate is fixedly installed on the back of the moving plate, a rotating motor is arranged below the frame, the output end of the rotating motor power passes through the frame and is fixedly installed with a connecting gear, the outer surface of the connecting gear is meshed with the back of the rack plate, two cylinders are fixedly installed on the inner top wall of the frame, the telescopic ends of the two cylinders are jointly fixedly installed with a connecting plate, the bottom surface of the connecting plate is fixedly installed with a rotating motor, the output end of the rotating motor power is fixedly installed with a rotating table, two groups of dynamometers are fixedly installed on the bottom surface of the rotating table, and a weight is clamped inside each of the dynamometers.

[0010] As a further solution of the utility model: two sets of universal wheels are fixedly installed on the bottom surface of the frame, and a brake pad is fixedly installed on the outer surface of each universal wheel.

[0011] As a further solution of the utility model: a sliding block is fixedly installed on the bottom surface of the movable plate, a sliding groove is opened on the inner bottom wall of the frame, and the sliding block is slidably connected inside the sliding groove.

[0012] As a further solution of the utility model: two groups of electric push rods are fixedly installed on the upper surface of the movable plate, and a clamping block is fixedly installed on the telescopic end of each electric push rod, and the inner wall of each clamping block contacts the outer surface of the test bottle.

[0013] As a further solution of the utility model: two fixing brackets are fixedly installed on the outer surface of the rotating motor, and the upper surface of each of the fixing brackets is fixedly connected to the bottom surface of the frame.

[0014] As a further solution of the utility model: a connecting bearing is fixedly installed on the bottom surface of the connecting plate, and the bottom surface of the inner ring of the connecting bearing is fixedly connected to the upper surface of the rotating table.

[0015] As a further solution of the utility model: a battery is fixedly mounted on the upper surface of the frame, and the battery is electrically connected to the rotating motor, the cylinder and the rotary motor respectively through wires.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model is provided with a frame, a test bottle, a hydraulic rod, a connecting plate, a dynamometer and a weight, and the power provided by the hydraulic rod is used to drive the dynamometer and the weight to move downward, so that the weight is extended into the inside of the test bottle, thereby achieving the purpose of demonstrating and teaching buoyancy. By providing a moving plate, a rack plate, a rotating motor, a connecting gear, a rotating motor and a rotating table, the power provided by the rotating motor is used in conjunction with the connecting gear to drive the rack plate and the moving plate to move, and the power provided by the rotating motor is used to drive the rotating table to rotate, thereby achieving the purpose of facilitating teachers to demonstrate the buoyancy of weights of different masses in different solutions, thereby reducing the complexity of teachers' operations, increasing the efficiency of teachers' buoyancy demonstrations, and increasing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of a simple physics teaching aid;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of a rear cross-sectional view of a frame in a simple physics teaching tool;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of a cross-sectional view of a frame in a simple physics teaching tool;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of a cross-sectional view of a connecting bearing in a simple physics teaching aid.

[0022] In the figure: 1. frame; 2. demonstration mechanism; 201. moving plate; 202. test bottle; 203. rack plate; 204. rotating motor; 205. connecting gear; 206. cylinder; 207. connecting plate; 208. rotating motor; 209. rotating table; 210. dynamometer; 211. weight; 3. universal wheel; 4. brake pad; 5. slider; 6. slide; 7. electric push rod; 8. clamping block; 9. fixed frame; 10. connecting bearing; 11. battery. DETAILED DESCRIPTION

[0023] See also Figure 1-4 A simple physics teaching tool includes a frame 1, two sets of universal wheels 3 are fixedly installed on the bottom surface of the frame 1, and a brake pad 4 is fixedly installed on the outer surface of each universal wheel 3. The installation of the universal wheel 3 makes it convenient for the teacher to move the device, thereby increasing the convenience of moving the device. The installation of the brake pad 4 plays a role in locking the universal wheel 3, thereby avoiding the phenomenon of the universal wheel 3 rotating on its own as much as possible, thereby ensuring the stability of the device.

[0024] A demonstration mechanism 2 is arranged inside the frame 1; the demonstration mechanism 2 includes a moving plate 201, the bottom surface of the moving plate 201 contacts the inner bottom wall of the frame 1, a slider 5 is fixedly installed on the bottom surface of the moving plate 201, a slide groove 6 is provided on the inner bottom wall of the frame 1, the slider 5 is slidably connected inside the slide groove 6, the shape of the slider 5 is T-shaped, the shape of the slide groove 6 matches the shape of the slider 5, the installation of the slider 5 and the slide groove 6 plays a role in limiting the moving trajectory of the moving plate 201, thereby avoiding the phenomenon that the moving plate 201 deviates from the moving trajectory when moving, thereby ensuring the stability of the movement of the moving plate 201.

[0025] Two groups of test bottles 202 are clamped inside the movable plate 201, and the solution inside each test bottle 202 is different. Two groups of electric push rods 7 are fixedly installed on the upper surface of the movable plate 201, and a clamping block 8 is fixedly installed on the telescopic end of each electric push rod 7. The inner wall of each clamping block 8 is in contact with the outer surface of the test bottle 202. The power provided by the electric push rod 7 is used in conjunction with the clamping block 8 to clamp and fix the test bottle 202, thereby minimizing the phenomenon of the test bottle 202 tilting when the movable plate 201 moves, thereby ensuring the stability of the test bottle 202.

[0026] A rack plate 203 is fixedly installed on the back of the moving plate 201, and a rotating motor 204 is arranged under the frame 1. The output end of the power of the rotating motor 204 passes through the frame 1 and is fixedly installed with a connecting gear 205. The outer surface of the connecting gear 205 is meshed with the back of the rack plate 203. Two fixing frames 9 are fixedly installed on the outer surface of the rotating motor 204. The upper surface of each fixing frame 9 is fixedly connected to the bottom surface of the frame 1. The installation of the fixing frame 9 plays a role in fixing the rotating motor 204, thereby minimizing the rotation of the rotating motor 204 during operation, thereby ensuring the stability of the operation of the rotating motor 204.

[0027] Two cylinders 206 are fixedly installed on the inner top wall of the frame 1, and a connecting plate 207 is fixedly installed on the telescopic ends of the two cylinders 206. A rotating motor 208 is fixedly installed on the bottom surface of the connecting plate 207, and a rotating table 209 is fixedly installed on the output end of the power of the rotating motor 208. A connecting bearing 10 is fixedly installed on the bottom surface of the connecting plate 207, and the bottom surface of the inner ring of the connecting bearing 10 is fixedly connected to the upper surface of the rotating table 209, and the upper surface of the outer ring of the connecting bearing 10 is fixedly connected to the bottom surface of the connecting plate 207. The installation of the connecting bearing 10 stabilizes the rotating table 209, thereby minimizing the shaking of the rotating table 209 during rotation, thereby ensuring the stability of the rotation of the rotating table 209.

[0028] Two groups of dynamometers 210 are fixedly installed on the bottom surface of the rotating table 209, and a weight 211 is clamped inside each dynamometer 210. The mass of each weight 211 is different. A battery 11 is fixedly installed on the upper surface of the frame 1. The battery 11 is electrically connected to the rotating motor 204, the cylinder 206, the rotating motor 208 and the electric push rod 7 through wires. The installation of the battery 11 can provide electrical energy to the electrical equipment of the device, so that the device does not need to be limited by the length of the wires, thereby increasing the practicality of the device.

[0029] The working principle of the utility model is as follows: when in use, the teacher first moves the device to the podium and uses the brake pad 4 to lock the universal wheel 3. Then, the teacher adds different solutions to the inside of the test bottle 202, and then places the test bottle 202 inside the movable plate 201, and turns on the electric push rod 7 through the external remote control device, and uses the power provided by the electric push rod 7 to drive the clamping block 8 to move to the side close to the test bottle 202, so that the clamping block 8 clamps and fixes the test bottle 202. Then, the teacher hangs weights 211 of different masses on the dynamometer 210 respectively. When the teacher demonstrates buoyancy, the teacher first turns on the cylinder 206, and uses the power provided by the cylinder 206 to drive the connecting plate 207 to move downward, so that the connecting plate 207 drives the weight 211 to extend into the inside of the test bottle 202, so that the size of the buoyancy is read on the dynamometer 210. When the teacher demonstrates the same weight 21 When the buoyancy of the solution is different, the teacher turns on the rotating motor 204 through the external remote control device, and uses the power provided by the rotating motor 204 to drive the connecting gear 205 to rotate, so that the connecting gear 205 drives the rack plate 203 to move, and then the rack plate 203 drives the moving plate 201 to move, so that the teacher moves the test bottle 202 containing different solutions to the bottom of the weight 211 in turn, so that the weight 211 is inserted into different solutions, so that it is convenient for the teacher to demonstrate the buoyancy of the same weight 211 in different solutions. When the teacher needs to replace the weight 211 of different masses, the teacher turns on the rotating motor 208 through the external remote control device, and uses the power provided by the rotating motor 208 to drive the rotating table 209 to rotate, so as to switch the weights 211 of different masses to extend into the interior of the test bottle 202, so as to achieve the purpose of demonstrating the buoyancy of weights 211 of different masses.

[0030] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A simple physics teaching tool, comprising a frame (1), characterized in that: A demonstration mechanism (2) is arranged inside the frame (1); The demonstration mechanism (2) comprises a moving plate (201), the bottom surface of the moving plate (201) contacts the inner bottom wall of the frame (1), two groups of test bottles (202) are clamped inside the moving plate (201), a rack plate (203) is fixedly installed on the back of the moving plate (201), a rotating motor (204) is arranged below the frame (1), the output end of the power of the rotating motor (204) passes through the frame (1) and is fixedly installed with a connecting gear (205), the outer surface of the connecting gear (205) is connected to the rack plate The back of the frame (203) is meshed with each other, two cylinders (206) are fixedly installed on the inner top wall of the frame (1), and the telescopic ends of the two cylinders (206) are commonly fixedly installed with a connecting plate (207), and the bottom surface of the connecting plate (207) is fixedly installed with a rotating motor (208), and the output end of the power of the rotating motor (208) is fixedly installed with a rotating table (209), and the bottom surface of the rotating table (209) is fixedly installed with two groups of dynamometers (210), and each of the dynamometers (210) is clamped with a weight (211) inside.

2. A simple physics teaching tool according to claim 1, characterized in that: Two sets of universal wheels (3) are fixedly mounted on the bottom surface of the frame (1), and a brake pad (4) is fixedly mounted on the outer surface of each universal wheel (3).

3. A simple physics teaching tool according to claim 1, characterized in that: A slider (5) is fixedly mounted on the bottom surface of the movable plate (201), a slide groove (6) is provided on the inner bottom wall of the frame (1), and the slider (5) is slidably connected inside the slide groove (6).

4. A simple physics teaching tool according to claim 1, characterized in that: Two groups of electric push rods (7) are fixedly mounted on the upper surface of the movable plate (201), and a clamping block (8) is fixedly mounted on the telescopic end of each electric push rod (7), and the inner wall of each clamping block (8) is in contact with the outer surface of the test bottle (202).

5. A simple physics teaching tool according to claim 1, characterized in that: Two fixing frames (9) are fixedly mounted on the outer surface of the rotating motor (204), and the upper surface of each fixing frame (9) is fixedly connected to the bottom surface of the frame (1).

6. A simple physics teaching tool according to claim 1, characterized in that: A connecting bearing (10) is fixedly mounted on the bottom surface of the connecting plate (207), and the bottom surface of the inner ring of the connecting bearing (10) is fixedly connected to the upper surface of the rotating platform (209).

7. A simple physics teaching tool according to claim 1, characterized in that: A storage battery (11) is fixedly mounted on the upper surface of the frame (1), and the storage battery (11) is electrically connected to the rotating motor (204), the cylinder (206) and the rotary motor (208) respectively through wires.

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