Physics teaching experiment auxiliary device

Abstract

The invention discloses a physics teaching experiment auxiliary device, and relates to the technical field of teaching auxiliary equipment. The device comprises a bottom plate, and the top of the bottom plate is provided with a magnet and an ampere meter. A switching mechanism is arranged at the top of the bottom plate and comprises a vertical plate fixedly connected to the top of the bottom plate and a motor rotationally connected to one side of the vertical plate. Through cooperation of the conversion mechanism and the rotation adjusting mechanism, key variables such as the magnetic field intensity, the number of coil turns and the magnet insertion speed can be flexibly adjusted, students can visually observe the influence of different variables on induction current, the quantitative relation of electromagnetic induction is deeply understood, the device supports demonstration of various experiment scenes, and the teaching efficiency is improved. Comprise the current change when the magnet is inserted into or pulled out of the coil, the influence of the magnetic field intensity change on the induction current, the induction current difference under different coil turns and the like, the teaching content is enriched, and the diversity and interestingness of the experiment are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of teaching auxiliary equipment, and in particular relates to a physics teaching experiment auxiliary device. Background Art

[0002] The phenomenon of electromagnetic induction is a key topic in high school physics instruction, and its principles form the foundation for students' understanding of electromagnetism. Currently, experimental aids, consisting of basic components such as coils, magnets, and galvanometers, are often used in experimental demonstrations and teaching to visually demonstrate the phenomenon of induced currents generated by changes in magnetic flux in a closed circuit.

[0003] Existing experimental aids for teaching students electromagnetic induction experiments can only demonstrate the current changes when a magnet is inserted or removed from a coil, but they lack the flexibility to adjust key variables such as magnetic field strength, number of coil turns, and magnet insertion speed. This prevents students from directly observing the effects of different variables on the induced current, resulting in a limited understanding of the laws of electromagnetic induction and a lack of a deep understanding of the quantitative relationships.

[0004] To this end, we provide a physics teaching experiment auxiliary device to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a physics teaching experiment auxiliary device, which solves the problem that the experimental auxiliary device in the prior art cannot flexibly adjust key variables during use through the cooperation of a conversion mechanism and a rotation adjustment mechanism.

[0006] To solve the above technical problems, the present invention is implemented through the following technical solutions.

[0007] The present invention is a physics teaching experiment auxiliary device, comprising a base plate, a magnet and an ammeter are respectively arranged on the top of the base plate; a conversion mechanism is provided on the top of the base plate, the conversion mechanism includes a vertical plate fixedly connected to the top of the base plate, a motor rotatably connected to one side of the vertical plate, and a first gear and a second gear respectively arranged on one side of the vertical plate; a rotation adjustment mechanism is provided on one side of the magnet, the rotation adjustment mechanism includes an adjustment disk rotatably connected to the top of the base plate, and a first coil, a second coil, a third coil and a fourth coil respectively fixedly connected to the top of the adjustment disk.

[0008] The present invention is further configured such that the conversion mechanism also includes a turntable arranged on one side of the second gear, a first cylinder fixedly connected to one side of the turntable, a limiting groove opened on one side of the second gear, a limiting rod fixedly connected to the output end of the first cylinder, and a rotating rod fixedly connected to the output end of the motor, a clamping assembly is provided on one side of the rotating rod, and a conveying assembly is provided on one side of the limiting rod.

[0009] The present invention is further configured such that the clamping assembly includes a support shell arranged on one side of the rotating rod, a second cylinder fixedly connected to the bottom inner side of the support shell, and a clamping plate fixedly connected to the output end of the second cylinder.

[0010] The present invention is further configured such that the conveying assembly includes a threaded rod arranged on one side of the limit rod, a threaded sleeve threadedly connected to the surface of the threaded rod, a third cylinder fixedly connected to one side of the threaded sleeve, a block fixedly connected to the output end of the third cylinder, a slot arranged on one side of the block, a guide rod fixedly connected to the other side of the threaded sleeve, and a support frame sleeved on the surface of the guide rod.

[0011] The present invention is further configured such that the rotation adjustment mechanism also includes a fourth cylinder fixedly connected to the top of the base plate, an insert block fixedly connected to the output end of the fourth cylinder, and a slot provided at the bottom of the adjustment disk.

[0012] The present invention is further configured such that a support rod is fixedly connected to one side of the second gear, a limited movable block is fixedly connected to one side of the support rod, and a limited movable groove is provided on one side of the limit slider.

[0013] The present invention is further configured such that a movable frame is fixedly connected to one side of the support shell, a limiting slider is fixedly connected to the bottom of the movable frame, and a limiting sliding groove is provided at the bottom of the limiting slider.

[0014] The present invention is further configured such that a limiting plate is fixedly connected to one side of the guide rod, and the limiting plate is in contact with the support frame.

[0015] The present invention is further configured such that a support platform is fixedly connected to the top of the base plate, and the support platform is in contact with the ammeter.

[0016] The present invention is further configured such that a fixing bracket is fixedly connected to one side of the vertical plate, and the fixing bracket is fixedly connected to the motor.

[0017] The present invention has the following beneficial effects.

[0018] 1. Through the cooperation of the conversion mechanism and the rotation adjustment mechanism, the present invention can flexibly adjust key variables such as magnetic field strength, number of coil turns, and magnet insertion speed, allowing students to intuitively observe the impact of different variables on the induced current, thereby deeply understanding the quantitative relationship of electromagnetic induction. The device supports the demonstration of various experimental scenarios, including the current change when the magnet is inserted or removed from the coil, the impact of changes in magnetic field strength on the induced current, and the difference in induced current under different numbers of coil turns. This enriches the teaching content and enhances the diversity and interest of the experiments.

[0019] 2. The present invention ensures the stability of the device during the experiment through the design of components such as the base plate, risers, and support frame. At the same time, the use of transmission mechanisms such as cylinders, gears, and threaded rods makes operation easier, making it easier for teachers and students to quickly complete experimental setup and adjustments.

[0020] 3. The present invention can display the magnitude of the induced current in the closed loop in real time through the setting of the ammeter, helping students to intuitively observe the electromagnetic induction phenomenon and enhance their understanding and memory of theoretical knowledge. The various components of the device are adjustable to facilitate the expansion of experimental functions and adapt to different teaching needs.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0023] Figure 1 It is a three-dimensional diagram of a physics teaching experiment auxiliary device.

[0024] Figure 2 This is a cross-sectional view of a vertical plate in a physics teaching experiment auxiliary device.

[0025] Figure 3 This is a cross-sectional view of a support frame in a physics teaching experiment auxiliary device.

[0026] Figure 4 This is a cross-sectional view of a support shell in a physics teaching experiment auxiliary device.

[0027] Figure 5 The figure is a cross-sectional view of a bottom plate in a physics teaching experiment auxiliary device.

[0028] Figure 6 This is a cross-sectional view of an adjustment disk in a physics teaching experiment auxiliary device.

[0029] Figure 7 This is a diagram of the movement state of a magnet in a physics teaching experiment auxiliary device.

[0030] In the accompanying drawings: 1, bottom plate; 2, magnet; 3, ammeter; 4, conversion mechanism; 41, vertical plate; 42, motor; 43, first gear; 44, second gear; 45, turntable; 46, first cylinder; 47, limit groove; 48, limit rod; 49, turn rod; 410, clamping assembly; 4101, support shell; 4102, second cylinder; 4103, clamping plate; 411, conveying assembly; 41101, threaded rod; 41102, threaded rod Sleeve; 41103, third cylinder; 41104, clamping block; 41105, clamping slot; 41106, guide rod; 41107, support frame; 5, rotation adjustment mechanism; 51, adjustment disk; 52, first coil; 53, second coil; 54, third coil; 55, fourth coil; 56, fourth cylinder; 57, insert block; 58, slot; 6, support rod; 7, movable frame; 8, limit plate; 9, support platform; 10, fixed frame. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Example 1

[0033] See also Figure 1-Figure 7The present invention is a physics teaching experiment auxiliary device, including a base plate 1, which serves as the basic support of the entire device and carries all components such as a magnet 2, an ammeter 3, a conversion mechanism 4, and a rotation adjustment mechanism 5 to ensure the stability of the device and the smooth progress of the experimental operation. A magnet 2 and an ammeter 3 are respectively arranged on the top of the base plate 1. The magnet 2 is used to generate a magnetic field and is one of the core components of the electromagnetic induction experiment. The ammeter 3 detects and displays the size of the induced current generated in the closed loop, helping students to intuitively observe the electromagnetic induction phenomenon and its quantitative relationship; a conversion mechanism 4 is arranged on the top of the base plate 1, and the conversion mechanism 4 includes a vertical plate 41 fixedly connected to the top of the base plate 1, and a motor 42 rotatably connected to one side of the vertical plate 41. The output end of the motor 42 is rotatably connected to the vertical plate 41 through a bearing. The vertical plate 41 fixes the motor 42 and components such as a threaded rod 41101 to provide structural support. A first gear 43 and a second gear 44 are respectively arranged on one side of the vertical plate 41. There are two second gears 44, which are symmetrically designed and distributed on one side of the first gear 43. The two second gears 44 have different diameters. , the motor 42 drives the rotating rod 49 and the first gear 43 to rotate, providing a power source for the experiment. The first gear 43 and the second gear 44 achieve different speeds of movement through transmission, which is used to adjust the speed at which the magnet 2 is inserted into the first coil 52, the second coil 53, the third coil 54 and the fourth coil 55; a rotation adjustment mechanism 5 is provided on one side of the magnet 2, and the rotation adjustment mechanism 5 includes an adjustment disk 51 rotatably connected to the top of the base plate 1, and the adjustment disk 51 is rotatably connected to the base plate 1 through a bearing. The first coil 52, the second coil 53, the third coil 54 and the fourth coil 55 are fixedly connected to the top of the adjustment disk 51 respectively. The number of turns of the first coil 52, the second coil 53, the third coil 54 and the fourth coil 55 are different. The relative movement between the magnet 2 and the first coil 52, the second coil 53, the third coil 54 and the fourth coil 55 is used to demonstrate the phenomenon that the magnetic flux change generates the induced current. The adjustment disk 51 carries the first coil 52, the second coil 53, the third coil 54 and the fourth coil 55, and is switched by rotation to demonstrate the influence of the number of turns on the induced current.

[0034] Example 2

[0035] See also Figure 1-Figure 7On the basis of Example 1, the conversion mechanism 4 also includes a turntable 45 arranged on one side of the second gear 44, a first cylinder 46 fixedly connected to one side of the turntable 45, and a limiting groove 47 opened on one side of the second gear 44. The first cylinder 46, the limiting rod 48 and the limiting groove 47 are used to limit the second gear 44 and control the switching of the transmission speed. The limiting rod 48 is fixedly connected to the output end of the first cylinder 46, and the rotating rod 49 is fixedly connected to the output end of the motor 42. The first gear 43 is fixedly connected to the surface of the rotating rod 49. The rotating rod 49 connects the motor 42 and the first gear 43 to transmit power. A clamping assembly 410 is provided on one side of the rotating rod 49, and a conveying assembly 411 is provided on one side of the limiting rod 48. The clamping assembly 410 includes a A support shell 4101 is placed on one side of the rotating rod 49, the support shell 4101 fixes the magnet 2, the second cylinder 4102 is fixedly connected to the bottom of the support shell 4101, and the clamping plate 4103 is fixedly connected to the output end of the second cylinder 4102. An anti-slip pad is fixedly connected to one side of the clamping plate 4103 and the bottom of the fixed shell. The anti-slip pad is in contact with the magnet 2. The second cylinder 4102 and the clamping plate 4103 are used to clamp or release the magnet 2. The conveying component 411 includes a threaded rod 41101 arranged on one side of the limiting rod 48. The turntable 45 is fixedly connected to the surface of the threaded rod 41101. The threaded rod 41101 is rotatably connected to the vertical plate 41 through a bearing at one end near the vertical plate 41. The second gear 44 is located on the surface of the threaded rod 41101. , a through groove is provided at its axial position, which is threadedly connected to the threaded sleeve 41102 on the surface of the threaded rod 41101, and the threaded rod 41101 and the threaded sleeve 41102 drive the magnet 2 to move through the threaded transmission, and is fixedly connected to the third cylinder 41103 on one side of the threaded sleeve 41102, and is fixedly connected to the block 41104 at the output end of the third cylinder 41103, and a slot 41105 is provided on one side of the block 41104, and the slots 41105 are respectively provided on one side of the splint 4103 and the bottom of the support shell 4101, and the size of the slot 41105 is adapted to the block 41104, and the third cylinder 41103, the block 41104 and the slot 41105 are used to switch the limit position of the support shell 4101, and are fixedly connected The guide rod 41106 on the other side of the threaded sleeve 41102, the support frame 41107 is sleeved on the surface of the guide rod 41106, the support frame 41107 can move on the surface of the guide rod 41106 along the direction of the guide rod 41106, the support frame 41107 is fixedly connected to the vertical plate 41, the guide rod 41106 and the support frame 41107 ensure the stability of the movement of the threaded sleeve 41102 and the magnet 2, the rotation adjustment mechanism 5 also includes a fourth cylinder 56 fixedly connected to the top of the base plate 1, an insert block 57 fixedly connected to the output end of the fourth cylinder 56, and a slot 58 opened at the bottom of the adjustment disk 51, the slot 58 is adapted to the size of the insert block 57, the fourth cylinder 56, the insert block 57 and the slot 58 are used to fix or release the adjustment disk 51.

[0036] Example 3

[0037] See also Figure 1-Figure 7 On the basis of Example 1 and Example 2, a support rod 6 is fixedly connected to one side of the second gear 44, and a limited movable block is fixedly connected to one side of the support rod 6. A limited movable groove is provided on one side of the limit slider. The limited movable groove is opened on one side of the vertical plate 41. The size of the limited movable groove is adapted to the limited movable block. The support rod 6, the limited movable block and the limited movable groove limit the movement range of the second gear 44 to ensure the accuracy and stability of the transmission. A movable frame 7 is fixedly connected to one side of the support shell 4101. The bottom of the movable frame 7 is fixedly connected to the limited slider. A limited slide groove is provided at the bottom of the limit slider. The limited slide groove is opened on the top of the bottom plate 1. The size of the limited slide groove is adapted to the limit slider. The movable frame 7, the limit The slider and the limiting groove support the clamping assembly 410 and limit its movement direction, ensuring the stability of the magnet 2 during movement. One side of the guide rod 41106 is fixedly connected to the limiting disk 8, and the limiting disk 8 is in contact with the support frame 41107. The limiting disk 8 prevents the guide rod 41106 from escaping the support frame 41107, ensuring the normal operation of the conveying assembly 411. The top of the base plate 1 is fixedly connected to the supporting platform 9, and the supporting platform 9 is in contact with the ammeter 3. The ammeter 3 is placed on the top of the supporting platform 9. One side of the vertical plate 41 is fixedly connected to the fixing frame 10, and the fixing frame 10 is fixedly connected to the motor 42. The fixing frame 10 fixes the motor 42 to ensure the stability of the motor 42 when working.

[0038] The operating principle of the present invention is as follows: starting motor 42 drives rotating rod 49 and first gear 43 to rotate. First cylinder 46 activates, pushing limiting rod 48 into limiting slot 47, limiting the position of second gear 44 at the bottom. The rotation of second gear 44 drives rotating disk 45 and threaded rod 41101, inserting magnet 2 into first coil 52 via threaded sleeve 41102 and conveying assembly 411. At this time, ammeter 3 displays the induced current generated in the closed loop, visually demonstrating the electromagnetic induction phenomenon.

[0039] The second cylinder 4102 works, driving the splint 4103 to move upward. An additional magnet 2 can be added between the splint 4103 and the support shell 4101 to enhance the magnetic field strength. After the splint 4103 moves down to fix the magnet 2, the operation of inserting the first coil 52 is repeated, and the effect of the change in magnetic field strength on the induced current is observed through the ammeter 3. The third cylinder 41103 works, moving the block 41104 out of the slot 41105 at the bottom of the support shell 4101, so that the block 41104 is stuck in the slot 41105 at the top of the splint 4103, and switching to the top second gear 44 for drive. Since the two second gears 44 have different diameters, the insertion speed of the magnet 2 changes accordingly. Students can observe the effect of the speed change on the induced current through the ammeter 3.

[0040] The fourth cylinder 56 operates, driving the insert 57 to move out of the slot 58, releasing the fixation of the adjustment disk 51. The adjustment disk 51 is rotated so that the first coil 52, the second coil 53, the third coil 54 or the fourth coil 55 are facing the magnet 2 in turn. The experimental demonstration is carried out to observe the effect of the number of turns on the induced current. The support rod 6, the limit movable block and the limit movable groove ensure the accuracy and stability of the transmission of the second gear 44. The movable frame 7, the limit slider and the limit slide groove limit the movement direction of the clamping assembly 410 to ensure the stability of the magnet 2 during movement. The guide rod 41106 and the limit disk 8 prevent the threaded sleeve 41102 from falling out, ensuring the normal operation of the conveying assembly 411. In this way, the key variable adjustment requirements in the electromagnetic induction experiment are fully covered, providing an efficient, flexible and intuitive experimental auxiliary tool for physics teaching.

[0041] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A physics teaching experiment auxiliary device, comprising a base plate (1), characterized in that: A magnet (2) and an ammeter (3) are respectively provided on the top of the base plate (1); A conversion mechanism (4) is provided on the top of the base plate (1), and the conversion mechanism (4) comprises a vertical plate (41) fixedly connected to the top of the base plate (1), a motor (42) rotatably connected to one side of the vertical plate (41), and a first gear (43) and a second gear (44) respectively provided on one side of the vertical plate (41); A rotation adjustment mechanism (5) is provided on one side of the magnet (2), and the rotation adjustment mechanism (5) comprises an adjustment disk (51) rotatably connected to the top of the base plate (1), and a first coil (52), a second coil (53), a third coil (54) and a fourth coil (55) respectively fixedly connected to the top of the adjustment disk (51).

2. A physics teaching experiment auxiliary device according to claim 1, characterized in that: The conversion mechanism (4) further comprises a turntable (45) arranged on one side of the second gear (44), a first cylinder (46) fixedly connected to one side of the turntable (45), a limiting groove (47) provided on one side of the second gear (44), a limiting rod (48) fixedly connected to the output end of the first cylinder (46), and a rotating rod (49) fixedly connected to the output end of the motor (42), a clamping assembly (410) being provided on one side of the rotating rod (49), and a conveying assembly (411) being provided on one side of the limiting rod (48).

3. A physics teaching experiment auxiliary device according to claim 2, characterized in that: The clamping assembly (410) includes a support shell (4101) arranged on one side of the rotating rod (49), a second cylinder (4102) fixedly connected to the bottom of the support shell (4101), and a clamping plate (4103) fixedly connected to the output end of the second cylinder (4102).

4. A physics teaching experiment auxiliary device according to claim 2, characterized in that: The conveying assembly (411) includes a threaded rod (41101) arranged on one side of the limiting rod (48), a threaded sleeve (41102) threadedly connected to the surface of the threaded rod (41101), a third cylinder (41103) fixedly connected to one side of the threaded sleeve (41102), a clamping block (41104) fixedly connected to the output end of the third cylinder (41103), a clamping groove (41105) arranged on one side of the clamping block (41104), a guide rod (41106) fixedly connected to the other side of the threaded sleeve (41102), and a support frame (41107) sleeved on the surface of the guide rod (41106).

5. A physics teaching experiment auxiliary device according to claim 1, characterized in that: The rotation adjustment mechanism (5) further comprises a fourth cylinder (56) fixedly connected to the top of the base plate (1), an insert (57) fixedly connected to the output end of the fourth cylinder (56), and a slot (58) provided at the bottom of the adjustment disk (51).

6. A physics teaching experiment auxiliary device according to claim 2, characterized in that: One side of the second gear (44) is fixedly connected to a support rod (6), one side of the support rod (6) is fixedly connected to a limited movable block, and one side of the limited sliding block is provided with a limited movable groove.

7. A physics teaching experiment auxiliary device according to claim 3, characterized in that: A movable frame (7) is fixedly connected to one side of the support shell (4101), a limiting slider is fixedly connected to the bottom of the movable frame (7), and a limiting sliding groove is provided at the bottom of the limiting slider.

8. A physics teaching experiment auxiliary device according to claim 4, characterized in that: One side of the guide rod (41106) is fixedly connected to a limiting plate (8), and the limiting plate (8) is in contact with the support frame (41107).

9. A physics teaching experiment auxiliary device according to claim 1, characterized in that: A support platform (9) is fixedly connected to the top of the base plate (1), and the support platform (9) is in contact with the ammeter (3).

10. A physics teaching experiment auxiliary device according to claim 1, characterized in that: A fixing frame (10) is fixedly connected to one side of the vertical plate (41), and the fixing frame (10) is fixedly connected to the motor (42).

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