Experiment demonstration device for teaching and use method thereof
By designing a universal joint and guide frame structure, combined with magnetic connection and threaded rod adjustment, the problem of accuracy and repeatability of track inclination angle in the double cone climbing device was solved, enabling precise adjustment of experimental results and data visualization, thus stimulating students' learning interest.
Patent Information
- Application Number
- CN202511739193.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-01-23
AI Technical Summary
In existing double-cone climbing devices, the accuracy and repeatability of the track inclination angle are difficult to guarantee, resulting in large errors in experimental results that cannot be precisely adjusted and reproduced.
It adopts a universal joint and guide frame structure, combined with magnetic connection and threaded rod adjustment, to achieve independent or synchronous precise angle adjustment of the adjustment rod, and is equipped with a sensor and computer display module for real-time data acquisition and visualization.
It enables precise and repeatable adjustment of the orbital inclination angle, enriches the dimensions of experimental inquiry, stimulates students' learning interest, and provides intuitive display of experimental data.
Smart Images
Figure CN121393276A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to a double cone climbing experiment teaching aid, and more particularly to a teaching experiment demonstration device and a method of using the same. BACKGROUND
[0002] As a classic scientific demonstration teaching aid, the double cone climbing experiment vividly reveals the physical principles of center of mass (center of gravity) change and energy conservation. The device is usually composed of a pair of tracks with a specific opening angle, a double cone, and an adjusting mechanism for supporting and adjusting the track inclination angle. Among them, the track inclination angle is a crucial experimental variable, and its accurate control is essential for quantitative study of climbing phenomenon, exploration of critical conditions and verification of related physical formulas.
[0003] However, the double cone climbing device in the prior art usually uses simple block support or manual lifting method to roughly set the track inclination angle by visual observation. This rough adjustment mode mainly brings the following two levels of problems:
[0004] First, the accuracy of angle setting cannot be guaranteed. Due to the lack of precise angle calibration reference, the operator cannot accurately adjust the track to the preset target inclination angle. Each adjustment depends on visual estimation, resulting in significant subjective and random errors in inclination angle setting.
[0005] Second, the repeatability of angle setting is very poor. In experiments that require data collection at a series of different inclination angles, the operator almost cannot accurately reproduce the track to a certain specific inclination angle after completing an experiment. SUMMARY
[0006] In order to overcome the above shortcomings, the present application provides a teaching experiment demonstration device and a method of using the same.
[0007] The technical implementation of the present application is: a teaching experiment demonstration device, comprising a demonstration table, at least two demonstration devices are symmetrically arranged on the demonstration table, and the demonstration device comprises two universal joints and two guide frames; the universal joint comprises a fixed column, two fixed columns are arranged on one end of the demonstration table, and the other end is provided with a movable shaft through a cross shaft; the guide frame comprises a first fixed frame, a first fixed frame is arranged on the side of the demonstration table away from the fixed column, a first guide rod is symmetrically arranged on the first fixed frame, an arc-shaped guide groove is slidably arranged on the first guide rod, a first moving block is slidably arranged on the arc-shaped guide groove, a plug rod is rotatably arranged on the first moving block, and a mounting piece is slidably arranged on the plug rod; the two mounting pieces are respectively provided with an adjusting rod through a detachable assembly between the corresponding movable shafts, the two adjusting rods are spaced apart to form a track, a double cone for rolling on the track is arranged between the two adjusting rods, and a first adjusting assembly for precise adjustment of the horizontal angle of the adjusting rod and a second adjusting assembly for precise adjustment of the vertical angle of the adjusting rod are arranged on the demonstration table.
[0008] Preferably, the vertical angle adjustment comprises a second fixed frame, a second fixed frame is arranged on the side of the demonstration table close to the first fixed frame, a first threaded rod is rotatably connected to the second fixed frame, a second moving block is slidably connected to the second fixed frame and threadedly connected with the first threaded rod, and a first detachable structure for synchronously adjusting the vertical angles of the two adjusting rods is arranged between the second moving block and the two arc-shaped guide rails.
[0009] Preferably, the horizontal angle adjustment comprises a support block, a support block is symmetrically arranged on the side of the demonstration table close to the fixed column, a connecting shaft is rotatably connected to the support block, a second detachable structure for synchronously adjusting the horizontal angles of the two adjusting rods is arranged between one end of the two connecting shafts, the other end of the two connecting shafts is respectively provided with a second threaded rod, the thread directions of the two second threaded rods are opposite, a second guide rod is arranged on each of the two cross shafts, a third moving block is sleeved on the second guide rod, the two third moving blocks are respectively threadedly connected with the corresponding second threaded rods, a connecting block is arranged on the movable shaft and the second moving block, and a connecting rod is rotatably connected between the two connecting blocks.
[0010] Preferably, the first detachable structure and the second detachable structure adopt a magnetic connection structure.
[0011] Preferably, the first detachable structure comprises a first electromagnetic valve arranged on one side of each arc-shaped guide groove close to the second moving block and a first magnetic block arranged on the second moving block and matched with the two first electromagnetic valves.
[0012] Preferably, the second detachable structure comprises a second electromagnetic valve arranged at one end of one of the connecting shafts and a second magnetic block arranged at the other end of the other connecting shaft and matched with the first electromagnetic valve.
[0013] Preferably, the two movable shafts are provided with a first insertion hole near one end of the adjusting rod, and the two mounting members are provided with a second insertion hole near one end of the adjusting rod, and the adjusting rod is provided with a threaded head, and the first insertion hole is provided with an internal thread matched with the threaded head.
[0014] Preferably, the demonstration platform is provided with a buffer plate for buffering the impact force of the bipyramid near both ends of the adjusting rod.
[0015] Preferably, the demonstration platform is provided with a computer and a display module, and the bipyramid is provided with a GPS module.
[0016] A use method of the experimental demonstration device for teaching, comprising the following steps:
[0017] Step 1: by controlling the power-on and power-off of the first electromagnetic valve and the attraction and disconnection of the first magnetic block, manually rotating the first threaded rod drives the vertical movement of the second moving block, and the second moving block drives the vertical swing of the arc-shaped guide rail through the first electromagnetic valve and the first magnetic block, thereby driving the independent or synchronous vertical angle adjustment of the adjusting rod along the universal joint;
[0018] Step 2: by controlling the power-on and power-off of the second electromagnetic valve and the attraction and disconnection of the second magnetic block, manually rotating the second threaded rod drives the horizontal movement of the third moving block, and the third moving block drives the horizontal swing of the movable shaft through the connecting block and the connecting rod, thereby driving the independent or synchronous horizontal angle adjustment of the adjusting rod along the universal joint;
[0019] Step 3: the threaded head of the adjusting rod can be screwed into and out of the first insertion hole, and the material of the adjusting rod and the bipyramid can be replaced according to the experiment required;
[0020] Step 4: during the bipyramid climbing experiment demonstration, the sensor continuously collects the original data of the bipyramid movement and transmits them to the computer, the computer processes the data, extracts the bipyramid movement trajectory, and generates a visual image or animation, and the processed trajectory data is presented through the display module.
[0021] The present application has the following advantages: 1. By connecting the universal joint and the guide frame at both ends of the adjusting rod, the two adjusting rods can be independently adjusted in angle, and when the first and second detachable structures are connected, the two adjusting rods can be synchronously adjusted in angle, so that students can accurately and repeatedly set different inclination angles when exploring the influence of the track inclination angle on the climbing speed / critical condition, and the exploration boundary is expanded;
[0022] 2. The threaded head provided on the adjusting rod can be screwed into and out of the first insertion hole, thereby facilitating the replacement of the adjusting rod, allowing students to try to replace the adjusting rod and the bipyramid with different materials, study the influence of the friction coefficient on the rolling smoothness, and greatly enrich the knowledge dimension;
[0023] 3, through the setting for collecting object's position, speed, direction, etc. Information of GPS module, inertial measurement unit (IMU), infrared sensor sensor on the double cone, cooperate with computer and display module, display the trajectory data of double cone to students, can directly see the object moving path and related parameters (speed, time, etc.);
[0024] 4, through more than two demonstration devices for students to actively participate, hands-on practice and group cooperation, the abstract mechanical knowledge becomes intuitive and vivid, effectively stimulates students' interest in learning and participation enthusiasm. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the application.
[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the demonstration device of the application.
[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the adjusting rod and threaded head of the application.
[0028] Figure 4 It is an exploded view of the gimbal and the first adjusting assembly of the application.
[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the guiding frame and the second adjusting assembly of the application.
[0030] Figure 6 It is an exploded view of the guiding frame and the second adjusting assembly of the application.
[0031] In the above drawings: 1-demonstration platform, 2-fixed column, 21-cross shaft, 22-movable shaft, 3-first fixed frame, 31-first guide rod, 32-arc-shaped guide groove, 33-mounting piece, 34-first moving block, 35-inserting rod, 4-second fixed frame, 41-first threaded rod, 42-second moving block, 43-first magnetic block, 44-first electromagnetic valve, 5-supporting block, 51-connecting shaft, 52-second threaded rod, 54-second electromagnetic valve, 55-third moving block, 56-second guide rod, 57-connecting block, 58-connecting rod, 59-second magnetic block, 6-first insertion hole, 62-second insertion hole, 63-threaded head, 7-cushion plate, 8-computer and display module, 9-adjusting rod, 10-double cone. DETAILED DESCRIPTION
[0032] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.
[0033] Embodiment: Refer to Figures 1-6 A teaching experiment demonstration device, comprising a demonstration table 1, at least two demonstration devices are symmetrically arranged on the demonstration table 1, the demonstration device comprises two universal joints and two guide frames, the universal joint comprises a fixed column 2, the two fixed columns 2 are arranged on the demonstration table 1 at one end, and the other end is respectively arranged with a movable shaft 22 through a cross shaft 21; the guide frame comprises a first fixed frame 3, the first fixed frame 3 is arranged on the side of the demonstration table 1 away from the fixed column 2, the first fixed frame 3 is symmetrically arranged with a first guide rod 31, the first guide rod 31 is slidably arranged with an arc-shaped guide groove 32, the arc-shaped guide groove 32 is slidably arranged with a first moving block 34, the first moving block 34 is rotatably arranged with a plug rod 35, and the plug rod 35 is slidably arranged with a mounting piece 33; the two mounting pieces 33 are respectively arranged with an adjusting rod 9 through a detachable assembly between the corresponding movable shaft 22, the two adjusting rods 9 are spaced apart to form a track, and a double cone 10 for rolling on the track is arranged between the two adjusting rods 9, the mounting piece 33 connected with the adjusting rod 9 and the plug rod 35 are slidably matched, the adjusting rod 9 for vertical angle adjustment is limited and guided, the mounting piece 33 connected with the adjusting rod 9 moves along the arc-shaped guide groove 32 through the plug rod 35 and the first moving block 34, and the adjusting rod 9 for horizontal angle adjustment is limited and guided, the demonstration table 1 is respectively arranged with a first adjusting assembly for precise adjustment of the horizontal angle of the adjusting rod 9 and a second adjusting assembly for precise adjustment of the vertical angle of the adjusting rod 9.
[0034] Refer to Figure 4 The vertical angle adjustment comprises a second fixed frame 4, the second fixed frame 4 is arranged on the side of the demonstration table 1 close to the first fixed frame 3, the second fixed frame 4 is rotatably connected with a first threaded rod 41, the second fixed frame 4 is slidably connected with a second moving block 42 threadedly connected with the first threaded rod 41, and the second moving block 42 is arranged with a first detachable structure between the two arc-shaped guide rails for synchronous adjustment of the vertical angle of the two adjusting rods 9, the first threaded rod 41 is rotated, the first threaded rod 41 drives the second moving block 42 to move vertically, the second moving block 42 drives the arc-shaped guide rail to swing vertically through the first detachable structure, so as to drive the adjusting rod 9 to adjust the vertical angle.
[0035] Refer to Figures 5-6The horizontal angle adjustment includes a support block 5. The support block 5 is symmetrically arranged on the side of the demonstration platform 1 near the fixed column 2. The support block 5 is rotatably connected to the connecting shaft 5. A second disassembly structure for synchronously adjusting the horizontal angle of the two adjusting rods 9 is provided between one end of the two connecting shafts 51. The other end is provided with a second threaded rod 52. The threads on the two second threaded rods 52 are opposite in direction. A second guide rod 56 is provided on each of the two cross shafts 21. A third moving block 55 is sleeved on the second guide rod 56. The two third moving blocks 55 are threadedly connected to the corresponding second threaded rods 52. A connecting block 57 is provided on both the movable shaft 22 and the second moving block 42. A connecting rod 58 is rotatably connected between the two connecting blocks 57. Rotating the second threaded rod 52 causes the third moving block 55 to move horizontally. The third moving block 55 drives the movable shaft 22 to swing horizontally through the connecting block 57 and the connecting rod 58, thereby driving the adjusting rod 9 to adjust the horizontal angle.
[0036] The first and second disassembly structures adopt threaded connection structure, snap-fit connection structure, magnetic connection structure and plug-in connection structure.
[0037] Reference Figure 6 The magnetic connection structure of the first disassembly structure includes a first solenoid valve 44 respectively disposed on one side of the two arc-shaped guide grooves 32 near the second moving block 42, and a first magnetic block 43 disposed on the second moving block 42 and cooperating with the two first solenoid valves 44. When the first solenoid valve 44 attracts the two first magnetic blocks 43, rotating the first threaded rod 41 can simultaneously and precisely adjust the vertical angle of the adjusting rod 9. (Refer to...) Figure 4 The magnetic connection structure of the second detachment structure includes a second solenoid valve 54 disposed at one end of one of the connecting shafts 51 and a second magnetic block 59 disposed at the other end of the connecting shaft 51 and cooperating with the first solenoid valve 44. When the second solenoid valve 54 and the second magnetic block 59 attract each other, rotating one of the second threaded rods 52 can simultaneously and precisely adjust the horizontal angle of the adjusting rod 9.
[0038] Reference Figure 5 The two mounting pieces 33 have a second insertion hole 62 at one end near the adjusting rod 9, as shown in the reference. Figure 3 One end of the adjusting rod 9 is provided with a threaded head 63, as shown in the reference. Figure 4 Two movable shafts 22 have a first insertion hole 6 at one end near the adjusting rod 9. The first insertion hole 6 has an internal thread that mates with the threaded head 63. The threaded head 63 of the adjusting rod 9 can be screwed into and out of the first insertion hole 6, which facilitates the replacement of the adjusting rod 9. The double cone 10 and the adjusting rod 9 are made of metal, hard plastic, or wood to reduce rolling friction while ensuring sufficient static friction.
[0039] The demonstration platform 1 is equipped with buffer plates 7 at both ends near the adjusting rod 9 to buffer the impact force of the double cones 10.
[0040] The demonstration stand 1 is equipped with a computer and a display module 8, while the double cone 10 is equipped with a GPS module. The sensors utilize a GPS module, an inertial measurement unit (IMU), and an infrared sensor to collect information such as the object's position, velocity, and orientation. These sensors continuously collect raw data on the object's motion, including position, time, and attitude, and transmit this data to the computer. The computer processes the data, extracts the object's trajectory, and generates a visual image or animation. The processed trajectory data is then presented to students through the display module, allowing them to intuitively see the object's movement path and related parameters such as velocity and time.
[0041] Reference Figures 1-6 A method for using an experimental demonstration device for teaching purposes includes the following steps:
[0042] Step 1: By controlling the first solenoid valve 44 to be energized and de-energized and attracted and disconnected from the first magnetic block 43, manually rotate the first threaded rod 41. The first threaded rod 41 drives the second moving block 42 to move vertically. The second moving block 42 drives the arc-shaped guide rail to swing vertically through the mutual magnetic attraction of the first solenoid valve 44 and the first magnetic block 43, thereby driving the adjusting rod 9 to perform independent or synchronous vertical angle adjustment along the universal joint.
[0043] Step 2: By controlling the second solenoid valve 54 to be energized and de-energized and the second magnetic block 59 to be attracted and disconnected, the second threaded rod 52 is manually rotated to drive the third moving block 55 to move horizontally. The third moving block 55 drives the movable shaft 22 to swing horizontally through the connecting block 57 and the connecting rod 58, thereby driving the adjusting rod 9 to make independent or synchronous horizontal angle adjustments along the universal joint.
[0044] Step 3: The threaded head 63 of the adjusting rod 9 can be screwed into and out of the first insertion hole 6. The materials of the adjusting rod 9 and the double cone 10 can be changed according to the experimental requirements.
[0045] Step 4: During the demonstration of the double cone 10 climbing experiment, the sensors continuously collect the raw data of the double cone 10's movement, such as position, time, and attitude, and transmit it to the computer. The computer processes the data, extracts the trajectory of the double cone 10, and generates a visual image or animation. The processed trajectory data is presented through the display module.
[0046] Reference Figures 1-6 A teaching comparative demonstration method for a double-cone 10 slope climbing experimental demonstration device for educational purposes includes the following steps:
[0047] Role:
[0048] Student A: Operates the "Standard Double Cone 10 Climbing Device"; Student B: Operates the "Comparison Reference Device"; Teacher: As the facilitator, guides the questions and summarizes.
[0049] Standard double cone 10 climbing device: The device is set as a standard double cone 10 + an open adjusting rod 9 with one end narrow and the other end wide + an inclined adjusting rod 9 with one end raised.
[0050] Comparison reference device: identical double cone 10 + parallel adjusting rods 9 with fixed spacing + inclined adjusting rod 9 with one end raised.
[0051] Comparative demonstration: Student A releases the double cone 10 from the lower narrow end, ensuring zero initial velocity, and the double cone 10 slowly climbs towards the upper wide end; Student B releases the double cone 10 from the upper end: the double cone 10 quickly rolls down to the lower end.
[0052] Working principle: Refer to Figures 1-6 Since the two ends of the adjusting rod 9 are connected to a universal joint and a guide frame respectively, when it is necessary to adjust the vertical angle of one adjusting rod 9 individually, when the corresponding first solenoid valve 44 is energized and attracts the first magnetic block 43, the first threaded rod 41 is manually rotated. The first threaded rod 41 drives the second moving block 42 to move vertically. The second moving block 42 drives the corresponding arc-shaped guide rail to swing vertically through the mutual magnetic attraction between the first solenoid valve 44 and the first magnetic block 43, thereby driving the corresponding adjusting rod 9 to adjust its vertical angle. When adjusting the vertical angle of the other adjusting rod 9, the attracting first solenoid valve 44 and the first magnetic block 43 are disconnected, and the first threaded rod 41 is rotated so that the first magnetic block 43 is connected to and attracted to the first solenoid valve 44 corresponding to the other adjusting rod 9. The above operation can be repeated. When both first solenoid valves 44 are energized and attracted to the first magnetic block 43 together, the above operation can be repeated to simultaneously and precisely adjust the vertical angle of the two adjusting rods 9. The third moving block 42 is driven by manually rotating the second threaded rod 52 to move the third moving block 43 to adjust its vertical angle. The moving block 55 moves horizontally, and the third moving block 55 drives the movable shaft 22 to swing horizontally through the connecting block 57 and the connecting rod 58, thereby driving the corresponding adjusting rod 9 to adjust the horizontal angle. At the same time, when the second disassembly structure is connected, rotating one of the second threaded rods 52 can simultaneously and precisely adjust the horizontal angle of the two adjusting rods 9. The threaded head 63 of the adjusting rod 9 can be screwed into and out of the first insertion hole 6, which facilitates the replacement of the adjusting rod 9. The double cone 10 and the adjusting rod 9 are made of metal, hard plastic, and wood to reduce rolling friction while ensuring sufficient static friction. During the double cone 10 climbing experiment demonstration, the sensor continuously collects the original data of the double cone 10's movement, such as position, time, and attitude, and transmits it to the computer. The computer processes the data, extracts the movement trajectory of the double cone 10, and generates a visual image or animation. The processed trajectory data is presented to students through the display module, allowing them to intuitively see the object's movement path and related parameters such as speed and time.
[0053] The above embodiments are provided for those skilled in the art to implement or use the present invention. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope that conforms to the innovative features mentioned in the claims.
Claims
1. A teaching demonstration apparatus for experiments, characterized by: The utility model provides a demonstration platform, which comprises a demonstration platform (1) and at least two demonstration devices symmetrically arranged on the demonstration platform (1), wherein each demonstration device comprises two universal joints and two guide frames. The universal joint comprises a fixed column (2), two fixed columns (2) are arranged on the demonstration platform (1) at one end, and the other end is provided with a movable shaft (22) through a cross shaft (21) respectively. The guide frame comprises a first fixed frame (3), a first fixed frame (3) is arranged on the demonstration platform (1) away from the fixed column (2) on one side, a first guide rod (31) is symmetrically arranged on the first fixed frame (3), 2. The experimental demonstration device for teaching according to claim 1, characterized in that: a first guide rod (31) is symmetrically arranged on the first fixed frame (3), 3. The experimental demonstration device for teaching according to claim 2, characterized in that: an arc-shaped guide groove (32) is slidably arranged on the first guide rod (31), 4. The experimental demonstration device for teaching according to claim 3, characterized in that: a first moving block (34) is slidably arranged on the arc-shaped guide groove (32), 5. The experimental demonstration device for teaching according to claim 4, characterized in that: a plug rod (35) is rotatably arranged on the first moving block (34), and an installation part (33) is slidably arranged on the plug rod (35). The two installation parts (33) are provided with an adjusting rod (9) through a detachable assembly between the corresponding movable shaft (22), two adjusting rods (9) are spaced apart to form a track, a double cone (10) for rolling on the track is arranged between the two adjusting rods (9), a first adjusting assembly for accurately adjusting the horizontal angle of the adjusting rod (9) and a second adjusting assembly for accurately adjusting the vertical angle of the adjusting rod (9) are arranged on the demonstration platform (1) respectively. The vertical angle adjustment comprises a second fixed frame (4), a second fixed frame (4) is arranged on the demonstration platform (1) close to the first fixed frame (3) on one side, a first threaded rod (41) is rotatably connected to the second fixed frame (4), a second moving block (42) is slidably connected to the second fixed frame (4) and is threadedly connected to the first threaded rod (41), and a first detachable structure for synchronously adjusting the vertical angle of the two adjusting rods (9) is arranged between the second moving block (42) and the two arc-shaped guide rails. The horizontal angle adjustment comprises a support block (5), a support block (5) is symmetrically arranged on the demonstration platform (1) close to the fixed column (2) on one side, a connecting shaft (51) is rotatably connected to the support block (5), a second detachable structure for synchronously adjusting the horizontal angle of the two adjusting rods (9) is arranged between the two connecting shafts (51) at one end, a second threaded rod (52) is arranged at the other end respectively, the screw directions of the two second threaded rods (52) are opposite, a second guide rod (56) is arranged on the two cross shafts (21) respectively, a third moving block (55) is sleeved on the second guide rod (56), the two third moving blocks (55) are threadedly connected to the corresponding second threaded rods (52) respectively, a connecting block (57) is arranged on the movable shaft (22) and the second moving block (42) respectively, and a connecting rod (58) is rotatably connected between the two connecting blocks (57). The first detachable structure and the second detachable structure adopt a magnetic connection structure. The first detachable structure comprises a first electromagnetic valve (44) arranged on one side of each arc-shaped guide groove (32) close to the second moving block (42) and a first magnetic block (43) arranged on the second moving block (42) and matched with the two first electromagnetic valves (44).
6. The experimental demonstration device for teaching according to claim 4, characterized in that: The second disconnection structure comprises a second electromagnetic valve arranged at the end of one of the connecting shafts (51) and a second magnetic block (59) arranged at the end of the other connecting shaft (51) and cooperating with the second electromagnetic valve (54).
7. The experimental demonstration device for teaching according to claim 6, characterized in that: The two movable shafts (22) are provided with first insertion holes (6) near one end of the adjusting rod (9), and the two mounting members (33) are provided with second insertion holes (62) near one end of the adjusting rod (9), and the adjusting rod (9) is provided with a threaded head (63) at one end, and the first insertion hole (6) is provided with an internal thread matched with the threaded head (63).
8. The experimental demonstration apparatus for teaching according to claim 7, characterized in that: The demonstration platform (1) is provided with a buffer plate (7) for buffering the impact force of the double cone (10) at both ends of the adjusting rod (9).
9. The experimental demonstration apparatus for teaching and its method of use according to claim 8, characterized in that: The demonstration platform (1) is provided with a computer and a display module, and the double cone (10) is provided with a GPS module.
10. A method of using a teaching demonstration apparatus according to any of claims 1-9, characterized by, The steps include: Step 1: by controlling the power-on and power-off of the first electromagnetic valve (44) and the attraction and disconnection of the first magnetic block (43), manually rotating the first threaded rod (41), the first threaded rod (41) drives the second moving block (42) to move vertically, the second moving block (42) drives the arc-shaped guide rail to move vertically through the first electromagnetic valve (44) and the first magnetic block (43) which are magnetically attracted to each other, thereby driving the adjusting rod (9) to independently or synchronously adjust the vertical angle along the universal joint; Step 2: by controlling the power-on and power-off of the second electromagnetic valve (54) and the attraction and disconnection of the second magnetic block (59), manually rotating the second threaded rod (52) drives the third moving block (55) to move horizontally, the third moving block (55) drives the movable shaft (22) to swing horizontally through the connecting block (57) and the connecting rod (58), thereby driving the adjusting rod (9) to independently or synchronously adjust the horizontal angle along the universal joint; Step 3: the threaded head (63) of the adjusting rod (9) can be screwed into and out of the first insertion hole (6), and the material of the adjusting rod (9) and the double cone (10) can be replaced according to the experimental requirements; Step 4: during the demonstration of the double cone (10) climbing experiment, the sensor continuously collects the original data of the motion of the double cone (10) and transmits them to the computer, the computer processes the data, extracts the motion trajectory of the double cone (10), and generates visual images or animations, and the processed trajectory data is presented through the display module.