Electrical experiment demonstration teaching aid

Abstract

The utility model discloses an electricity experiment demonstration teaching aid comprising a pedestal, the upper end of the pedestal is provided with a vertical plate, the vertical plate is provided with a lifting device, the top of the lifting device is provided with a connecting seat, the upper end of the connecting seat is provided with a demonstration plate, the demonstration plate is internally provided with a supporting rod, the supporting rod is provided with a limiting plate, and the limiting plate is provided with a through hole. Criss-cross sliding grooves are formed between the limiting plates, fastening devices are arranged in the sliding grooves in a sliding mode, and teaching aids are arranged between the fastening devices and the demonstration plate. The utility model belongs to the technical field of teaching demonstration, and particularly relates to an electricity experiment demonstration teaching aid capable of solving the problem that the traditional electricity experiment teaching demonstration cannot be comprehensively and clearly performed.

Description

Technical Field

[0001] The utility model belongs to the technical field of teaching demonstration, in particular to an electrical experiment demonstration teaching aid. Background Art

[0002] In current physics and electricity demonstration experiments in primary or secondary schools, teachers often bring some commonly used electrical components to the classroom and connect them on the spot for demonstration.

[0003] In the prior art, teachers generally demonstrate on the desk, but there are shortcomings: since the experimental teaching aids used for demonstration are generally placed flat on the desk, students at the back cannot observe clearly, which loses the overall clarity of the demonstration. Therefore, improvements are needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is that a traditional electrical experiment demonstration teaching aid cannot fully and clearly demonstrate electrical experiment teaching.

[0005] In order to realize the above-mentioned function, the technical scheme adopted by the utility model is as follows: an electrical experiment demonstration teaching aid comprises a base, a vertical plate is arranged at the upper end of the base, a lifting device is arranged on the vertical plate, a connecting seat is arranged on the top of the lifting device, a demonstration board is arranged at the upper end of the connecting seat, a support rod is arranged in the demonstration board, a limit plate is arranged on the support rod, a criss-crossing slide groove is arranged between the limit plates, a fastening device is slidably arranged in the slide groove, and a teaching aid is arranged between the fastening device and the demonstration board; the fastening device comprises a baffle plate, the baffle plate is slidably arranged in the slide groove, a screw column is arranged on the baffle plate, a screw nut is threadedly connected on the screw column, and a pressing plate is arranged on the screw nut, by placing the teaching aid on the limit plate and sliding the position of the screw column, the pressing plate is located above the teaching aid, and by rotating the screw nut, the teaching aid can be pressed on the limit plate, so that the teaching aid for electrical teaching is fixed on the demonstration board, which is helpful for students to watch comprehensively and clearly.

[0006] Furthermore, the lifting device includes a motor, which is arranged on the base, and a screw rod is provided at the power output end of the motor. A lifting cylinder is provided at the lower end of the connecting seat and passes through the vertical plate. The lifting cylinder is threadedly connected to the screw rod, and a guide rod is provided at the lower end of the connecting seat. The guide rod passes through the vertical plate, and an end plate is provided at the lower end of the guide rod. The height of the demonstration board can be raised and lowered by the lifting device, so that the demonstration height of the electronic teaching aids can be adjusted, making it convenient for students behind to see the demonstration more clearly.

[0007] Preferably, a pull ring is provided at the upper end of the wire column, and the pull ring helps to limit the position of the wire column.

[0008] Preferably, the lower end of the end plate is flush with the lower end of the lifting cylinder to prevent the lifting cylinder from slipping out of the vertical plate.

[0009] Preferably, the bottom of the base is provided with self-locking walking wheels, and the walking wheels are universal walking wheels.

[0010] Preferably, the diameter of the wire column is equal to the width of the sliding groove, the baffle is a circular plate and its diameter is larger than that of the wire column.

[0011] The beneficial effects obtained by the present utility model adopting the above structure are as follows:

[0012] By setting the fastening device, the teaching aids for electrical experiments of the present utility model can be fixed on the demonstration board, so that the teaching aids can be erected for demonstration. With the adjustment of the lifting device, it is convenient for the students at the back to watch clearly, improving the demonstration teaching effect of electrical experiments. Description of the Drawings

[0013] Figure 1 is the overall three-dimensional view of a teaching aid for electrical experiment demonstration of the present utility model;

[0014] Figure 2 is the front view of a teaching aid for electrical experiment demonstration of the present utility model;

[0015] Figure 3 is Figure 2 the three-dimensional view of the fastening device in

[0016] Figure 4 is the side sectional view of the demonstration board.

[0017] Among them, 1. Base, 2. Vertical plate, 3. Lifting device, 4. Connecting seat, 5. Demonstration board, 6. Support rod, 7. Limiting plate, 8. Sliding groove, 9. Fastening device, 10. Teaching aids, 11. Baffle, 12. Wire column, 13. Wire nut, 14. Pressing plate, 15. Motor, 16. Lead screw, 17. Lifting cylinder, 18. Guide rod, 19. End plate, 20. Pulling ring, 21. Walking wheel. Detailed Embodiment

[0018] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.

[0020] As Figures 1-4 , an electrical experiment demonstration teaching aid of the present utility model includes a base 1. A vertical plate 2 is provided at the upper end of the base 1. A self-locking walking wheel 21 is provided at the bottom of the base 1. The walking wheel 21 is a universal walking wheel 21. A lifting device 3 is provided on the vertical plate 2. A connecting seat 4 is provided at the top of the lifting device 3. A demonstration board 5 is provided at the upper end of the connecting seat. A support rod 6 is provided inside the demonstration board 5. A limiting plate 7 is provided on the support rod 6. An interlaced chute 8 is provided between the limiting plates 7. A fastening device 9 is slidably provided in the chute 8. A teaching aid 10 is provided between the fastening device 9 and the demonstration board 5;

[0021] As Figures 2-3 , the fastening device 9 includes a baffle 11. The baffle 11 is slidably provided in the chute 8. A screw column 12 is provided on the baffle 11. The diameter of the screw column 12 is equal to the width of the chute 8. The baffle 11 is a circular plate and its diameter is larger than the diameter of the screw column 12. A pull ring 20 is provided at the upper end of the screw column 12. The pull ring 20 helps to limit the screw column 12. A screw nut 13 is threadedly connected to the screw column 12. A pressing plate 14 is provided on the screw nut 13. By placing the teaching aid 10 on the limiting plate 7 and sliding the position of the screw column 12, the pressing plate 14 is located above the teaching aid 10. By rotating the screw nut 13, the teaching aid 10 can be pressed against the limiting plate 7, completing the fixation of the teaching aid for electrical teaching on the demonstration board 5. In this way, it helps students to watch comprehensively and clearly.

[0022] As Figure 1 , the lifting device 3 includes a motor 15. The motor 15 is provided on the base 1. A lead screw 16 is provided at the power output end of the motor 15. A lifting cylinder 17 is provided at the lower end of the connecting seat 4 and penetrates through the vertical plate 2. The lifting cylinder 17 is threadedly connected to the lead screw 16. A guide rod 18 is provided at the lower end of the connecting seat 4. The guide rod 18 penetrates through the vertical plate 2. An end plate 19 is provided at the lower end of the guide rod 18. The lower end of the end plate 19 is flush with the lower end of the lifting cylinder 17, preventing the lifting cylinder 17 from sliding out of the vertical plate 2. Through the lifting device 3, the height of the demonstration board 5 can be lifted, thereby adjusting the demonstration height of the electrical teaching aid 10 and facilitating the students behind to see the demonstration more clearly.

[0023] During specific use, when it is necessary to demonstrate an electrical experiment, first, the teaching aid 10 is attached to the surface of the limit plate 7 on the demonstration board 5, and then the screw column 12 is slid to a suitable position. When sliding the screw column 12, the baffle 11 can slide upside down in the slide groove 8, and the pen tip screw column 12 can be separated from the limit plate 7. The nut 13 is turned so that the final pressure plate 14 is pressed on the teaching aid 10 to complete the fixation of the teaching aid 10. The teacher can then electrically connect the teaching aid 10 to demonstrate an electrical experiment. By starting the motor 15, the screw rod 16 rotates, the lifting cylinder 17 will rise and fall in the vertical plate 2, and the guide rod 18 will slide in the vertical plate 2, so that the height of the demonstration board 5 can be adjusted, which is convenient for the following students to watch the electrical experiment scene more clearly and comprehensively.

[0024] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An electrical experiment demonstration teaching aid, comprising a base, a vertical plate on the upper end of the base, a lifting device on the vertical plate, a connecting seat on the top of the lifting device, and a demonstration board on the upper end of the connecting seat, characterized in that: A support rod is arranged inside the demonstration board, a limit plate is arranged on the support rod, crisscrossing slide grooves are arranged between the limit plates, a fastening device is slidably arranged in the slide groove, and a teaching aid is arranged between the fastening device and the demonstration board.

2. The electrical experiment demonstration teaching aid according to claim 1, characterized in that: The fastening device comprises a baffle plate, which is slidably arranged in a slide groove, a screw post is arranged on the baffle plate, a screw nut is threadedly connected on the screw post, and a pressing plate is arranged on the screw nut.

3. An electrical experiment demonstration teaching aid according to claim 2, characterized in that: The lifting device includes a motor, which is arranged on a base. A screw rod is provided at the power output end of the motor. A lifting cylinder is provided at the lower end of the connecting seat and passes through the vertical plate. The lifting cylinder is threadedly connected to the screw rod. A guide rod is provided at the lower end of the connecting seat. The guide rod passes through the vertical plate. An end plate is provided at the lower end of the guide rod.

4. The electrical experiment demonstration teaching aid according to claim 3, characterized in that: A pull ring is arranged at the upper end of the wire column.

5. The electrical experiment demonstration teaching aid according to claim 4, characterized in that: The lower end of the end plate is flush with the lower end of the lifting cylinder.

6. The electrical experiment demonstration teaching aid according to claim 5, characterized in that: A self-locking running wheel is arranged at the bottom of the base, and the running wheel is a universal running wheel.

7. The electrical experiment demonstration teaching aid according to claim 6, characterized in that: The diameter of the wire column is equal to the width of the slide groove, and the baffle is a circular plate with a diameter larger than the diameter of the wire column.

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