Mechanical motion demonstration device based on mechanical principle classroom

Abstract

A mechanical motion demonstration device based on a mechanical principle classroom comprises a device body which comprises a teaching demonstration box, a fork-type elevator and a substrate, and the fork-type elevator and the substrate are arranged at the inner bottom of the teaching demonstration box; the mechanical motion demonstration mechanism comprises a demonstration frame, a connecting rod mechanism and a transmission part, the demonstration frame is arranged on the periphery of the substrate, the connecting rod mechanism is arranged at the upper end of the demonstration frame, and the transmission part comprises a motor, a transmission assembly, a reduction gearbox, a bevel gear, a straight cylindrical gear and a chain wheel; the chain wheel is arranged at the upper end of the demonstration frame and is connected with the driven end of the connecting rod mechanism; the mechanical motion animation demonstration device comprises a demonstration screen and an AR interaction module. The mechanical motion demonstration device is combined with animation experiment demonstration and physical mechanical motion to prove conclusions and principles, can help students to carry out mechanical structure analysis and planar mechanism motion analysis, and improves the teaching quality of mechanical principles and the knowledge application ability of the students.

Description

Technical Field

[0001] The present invention is specifically a mechanical motion demonstration device based on a mechanical principle classroom. Background Art

[0002] "Principles of Mechanics" is a core professional basic course for mechanical majors in higher undergraduate colleges. The course has the characteristics of strong basic theory and obvious engineering practice. It is a course that combines theory and engineering practice very closely. Due to the complicated content of "Principles of Mechanics" and the relatively independent knowledge points, students generally report that it is difficult to learn and cannot master the knowledge within the limited class time.

[0003] Usually, the knowledge of mechanism structure analysis, plane mechanism motion analysis, common mechanical transmission mechanism and principle is taught by theoretical lectures and mathematical reasoning, and it is rarely combined with animation experimental demonstration and physical mechanical motion to prove the conclusion and principle. This makes students feel abstract and difficult to understand when accepting knowledge, and their understanding is not very thorough. As time goes by, it will lead to low interest in learning and affect learning efficiency. Therefore, in order to stimulate students' learning interest and subjective initiative, improve the teaching quality of mechanical principles and students' knowledge application ability, a mechanical motion demonstration device based on mechanical principles classroom is designed. Summary of the invention

[0004] In view of the above, the present invention provides a mechanical motion demonstration device based on a mechanical principle classroom to solve the problems raised in the above background technology.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: a mechanical motion demonstration device based on a mechanical principle classroom is provided, comprising: a device main body, which comprises a teaching demonstration box, a moving mechanism is arranged at the bottom of the teaching demonstration box, a movably installed box cover is arranged at the upper part of the teaching demonstration box, and the interior of the teaching demonstration box is hollow; a lifting mechanism, which comprises a fork lift and a base plate, the lower end of the fork lift is arranged at the bottom of the teaching demonstration box, the upper end of the fork lift is connected to the base plate, and when the fork lift is lowered and retracted, it can be completely built into the teaching demonstration box, so that the box cover is convenient to close; a mechanical motion demonstration mechanism, which comprises a demonstration frame, a connecting rod mechanism, and a transmission component for driving the connecting rod mechanism to move, the demonstration frame is arranged around the base plate, the connecting rod mechanism is arranged at the upper end of the demonstration frame, and the transmission component comprises a motor, a transmission assembly, a reduction box, a bevel gear, a straight cylindrical gear, and a sprocket. The motor and the reduction box are both arranged on the upper surface of the substrate, the sprocket is arranged on the upper end of the demonstration frame, the sprocket is connected to the driven end of the connecting rod mechanism, the motor is connected to the reduction box for movement through the transmission assembly, the bevel gear is connected to the output shaft of the reduction box through a latch key, and the straight cylindrical gear is connected through a stack of meshing bevel gears, the coaxial sprocket is driven to move through the cooperation between gears with different numbers of teeth on the gear shaft, and the sprocket drives the connecting rod mechanism at the end to move together during the movement; a mechanical motion animation demonstration device, which includes a demonstration screen for synchronously animating the mechanical motion trajectory of the mechanical motion demonstration mechanism, and an AR interactive module for separately animating the mechanical motion trajectory of the connecting rod mechanism, the demonstration screen is arranged on the outer wall of the demonstration frame, and the AR interactive module is arranged on the upper end surface of the demonstration frame and aligned with the connecting rod mechanism.

[0006] Furthermore, the connecting rod mechanism includes a crank-rocker mechanism, a double crank mechanism, and a double rocker mechanism, which are arranged on one side of the upper end of the demonstration frame from left to right in sequence, and the driven gear ends of the crank-rocker mechanism, the double crank mechanism, and the double rocker mechanism are respectively meshed and connected with the sprocket; driven by the sprocket, the crank-rocker mechanism, the double crank mechanism, and the double rocker mechanism respectively perform connecting rod motion.

[0007] Furthermore, the AR interaction module includes a first AR interaction module for capturing the motion trajectory of the crank rocker mechanism, a second AR interaction module for capturing the motion trajectory of the double crank mechanism, and a third AR interaction module for capturing the motion trajectory of the double rocker mechanism. The first AR interaction module, the second AR interaction module, and the third AR interaction module are arranged on the other side of the upper end of the demonstration frame from left to right; the first AR interaction module, the second AR interaction module, and the third AR interaction module capture the motion trajectories of the crank rocker mechanism, the double crank mechanism, and the double rocker mechanism, respectively.

[0008] Furthermore, the output ends of the first AR interaction module, the second AR interaction module, and the third AR interaction module are connected to the input end of the demonstration screen; and an animation demonstration is performed on the demonstration screen.

[0009] Furthermore, the transmission assembly includes a V-belt, which connects the driving end of the motor and the driven end of the reduction box, so that the motor drives the reduction box to move.

[0010] Furthermore, it also includes a control component for controlling the action of the forklift, and the control component includes a lifting button, a microcontroller, and a relay. The lifting button is arranged on the outer wall of the teaching demonstration box, and the microcontroller and the relay are arranged inside the teaching demonstration box.

[0011] Furthermore, it also includes a remote control component for regulating the synchronous opening of the motor and the demonstration screen, the remote control component includes a remote control, a wireless transmitting module, and a wireless receiving module, the wireless receiving module is respectively arranged in the motor and the demonstration screen, the wireless transmitting module is arranged in the remote control, and the remote control is provided with an on / off button; the on / off button regulates the synchronous opening of the motor and the demonstration screen, combining the animation experiment demonstration and the real mechanical movement.

[0012] Furthermore, the moving mechanism includes a plurality of universal wheels, and the plurality of universal wheels are respectively arranged at four ends of the bottom of the teaching demonstration box, so as to facilitate the movement of the teaching demonstration box.

[0013] Furthermore, the universal wheels are provided with brake pads for fixing the teaching demonstration box.

[0014] The beneficial effects of the present invention are as follows: the mechanical motion demonstration device incorporates the relevant knowledge of mechanical kinematics in mechanical principles, combines animated experimental demonstrations with actual mechanical motion to prove conclusions and principles, can help students conduct mechanical structure analysis and planar mechanism motion analysis, highlight key points during the demonstration process, help students understand the principles of mechanical motion, and is more conducive to inspiring thinking, improving the quality of teaching mechanical principles and students' knowledge application ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 It is a structural diagram of a mechanical motion demonstration mechanism.

[0017] Figure 3 It is a structural diagram of a teaching demonstration box, a lifting mechanism, a demonstration frame, and a demonstration screen.

[0018] Figure 4 It is a structural diagram of the transmission components.

[0019] Figure 5 It is a simplified diagram of the mechanical transmission of a mechanical motion demonstration mechanism.

[0020] Figure 6 It is a circuit flow chart of the present invention.

[0021] In the figure, 1. teaching demonstration box; 101. box cover; 2. demonstration frame; 201. forklift; 202. base plate; 3. motor; 4. transmission assembly; 5. reduction gearbox; 6. bevel gear; 7. straight cylindrical gear; 8. sprocket; 9. crank rocker mechanism; 10. double crank mechanism; 11. double rocker mechanism; 12. wireless receiving module; 13. relay; 14. microcontroller; 15. brake pad; 16. universal wheel; 17. first AR interactive module; 18. second AR interactive module; 19. third AR interactive module; 20. demonstration screen; 21. remote control; 22. opening and closing button; 23. wireless transmitting module; 24. lifting button. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and some implementation methods.

[0023] exist Figure 1-Figure 6 A mechanical motion demonstration device based on a mechanics principle classroom is provided, comprising: a device main body, which includes a teaching demonstration box 1, a moving mechanism is provided at the bottom of the teaching demonstration box 1, a movably mounted box cover 101 is provided on the upper part of the teaching demonstration box 1, and the interior of the teaching demonstration box 1 is hollow; the moving mechanism includes a plurality of universal wheels 16, and the plurality of universal wheels 16 are respectively arranged at the four ends of the lower bottom of the teaching demonstration box 1; the universal wheels 16 are all provided with brake pads 15 for fixing the teaching demonstration box 1; the box cover 101 is movably covered on the teaching demonstration box 1, and the movement of the teaching demonstration box 1 is facilitated by the universal wheels 16, and the mechanics principle classroom demonstration is carried out in each classroom, and the brake pads 15 fix the teaching demonstration box 1 to prevent the teaching demonstration box 1 from happening during the mechanics principle classroom demonstration, which affects the teaching.

[0024] In this embodiment, the lifting mechanism includes a fork lift 201 and a base plate 202. The lower end of the fork lift 201 is arranged at the bottom of the teaching demonstration box 1, and the upper end of the fork lift 201 is connected to the base plate 202. When the fork lift 201 is lowered and retracted, it can be completely built into the teaching demonstration box 1, so that the box cover 101 can be closed conveniently; it also includes a control component for regulating the action of the fork lift 201, and the control component includes a lifting button 24, a microcontroller 14, and a relay 13. The lifting button 24 is arranged on the outer wall of the teaching demonstration box 1, and the microcontroller 14 and the relay 13 are arranged on the teaching demonstration box 1. Inside; when in use, the teaching demonstration box 1 is moved to the mechanical principle classroom, and the lifting button 24 is pressed. Through the circuit signal transmission of the microcontroller 14 and the relay 13, the forklift 201 and the base plate 202 are regulated to rise. The mechanical motion demonstration mechanism is located above the teaching demonstration box 1 to help students conduct mechanical structure analysis and planar mechanism motion analysis, improve the teaching quality of mechanical principles and students' knowledge application ability. After the teaching demonstration, the lifting button 24 is pressed again. Through the circuit signal transmission, the forklift 201 is regulated to descend and retract into the teaching demonstration box 1. After the box cover 101 is closed, the movement of the teaching demonstration box 1 is convenient.

[0025] In this embodiment, a mechanical motion demonstration mechanism includes a demonstration frame 2, a connecting rod mechanism, and a transmission component for driving the connecting rod mechanism to move. The demonstration frame 2 is arranged around the substrate 202, and the connecting rod mechanism is arranged at the upper end of the demonstration frame 2. The transmission component includes a motor 3, a transmission assembly 4, a reduction box 5, a bevel gear 6, a straight cylindrical gear 7, and a sprocket 8. The motor 3 and the reduction box 5 are both arranged on the upper surface of the substrate 202, and the sprocket 8 is arranged at the upper end of the demonstration frame 2. The sprocket 8 is connected to the driven end of the connecting rod mechanism. The motor 3 is connected to the reduction box 5 through the transmission assembly 4 for movement. The bevel gear 6 is connected to the output shaft of the reduction box 5 through a latch key, and is connected to the straight cylindrical gear 7 through a stack of meshing bevel gears 6. The coaxial sprocket 8 is driven to move through the cooperation between gears with different numbers of teeth on the gear shaft. The sprocket 8 is During the movement, the connecting rod mechanism at the end is driven to move together; the transmission component 4 includes a V-belt, which connects the driving end of the motor 3 and the driven end of the reduction box 5, so that the motor 3 drives the reduction box 5 to move; when in use, press the opening and closing button 22, and through the circuit signal transmission, adjust the motor 3 and the demonstration screen 20 to open synchronously, the motor 3 drives the reduction box 5 to move through the V-belt, the reduction box 5 drives the bevel gear 6 to move through the latch key, and drives the straight cylindrical gear 7 through a pile of meshing bevel gears 6 to perform gear meshing transmission, and drives the coaxial sprocket 8 to move through the cooperation between gears with different numbers of teeth on the gear shaft. During the movement, the sprocket 8 drives the connecting rod mechanism at the end to move together, and proves the conclusions and principles through the actual mechanical movement, which can help students to analyze mechanical structures and motion analysis of planar mechanisms, improve the teaching quality of mechanical principles and students' knowledge application ability.

[0026] In the present embodiment, the mechanical motion animation demonstration device comprises a demonstration screen 20 for synchronously animating the mechanical motion trajectory of the mechanical motion demonstration mechanism, and an AR interactive module for independently animating the mechanical motion trajectory of the connecting rod mechanism. The demonstration screen 20 is arranged on the outer wall of the demonstration frame 2, and the AR interactive module is arranged on the upper end surface of the demonstration frame 2 and is aligned with the connecting rod mechanism; the connecting rod mechanism comprises a crank rocker mechanism 9, a double crank mechanism 10, and a double rocker mechanism 11, and the crank rocker mechanism 9, the double crank mechanism 10, and the double rocker mechanism 11 are arranged on one side of the upper end of the demonstration frame 2 from left to right, and the driven gear ends of the crank rocker mechanism 9, the double crank mechanism 10, and the double rocker mechanism 11 are respectively aligned with the driven gear ends of the crank rocker mechanism 9, the double crank mechanism 10, and the double rocker mechanism 11. The sprockets 8 are meshed and connected; driven by the sprocket 8, the crank-rocker mechanism 9, the double crank mechanism 10, and the double rocker mechanism 11 respectively perform connecting rod movements; when in use, the opening and closing button 22 is pressed, and the motor 3 is regulated to start synchronously with the demonstration screen 20 through circuit signal transmission. The motor 3 drives the crank-rocker mechanism 9, the double crank mechanism 10, and the double rocker mechanism 11 to perform connecting rod movements through mechanical transmission. At the same time, the mechanical motion trajectory of the planar mechanism is synchronously animated on the demonstration screen 20. Combining animated experimental demonstrations with actual mechanical motion to prove conclusions and principles can better help students conduct mechanical structure analysis and motion analysis of planar mechanisms, help students understand the principles of mechanical motion, and are more conducive to inspiring thinking, improving the teaching quality of mechanical principles and students' knowledge application ability.

[0027] In this embodiment, the demonstration screen 20 can also be installed on the wall of the classroom. Through the on / off button 22 of the remote control 21, the wireless signal transmission between the wireless transmitting module 23 and the wireless receiving module 12 can be used to adjust the mechanical movement trajectory of the animated projection plane mechanism on the demonstration screen 20. The specific installation position of the demonstration screen 20 can be set according to actual conditions. The demonstration screen 20 and the teaching demonstration box 1 are wirelessly connected through a wireless transmission module. The wireless connection technology is a common prior art and is not the technical content protected by the present invention. Therefore, it constitutes a limitation on the technical solution of the present invention.

[0028] In this embodiment, the AR interaction module includes a first AR interaction module 17 for capturing the motion trajectory of the crank rocker mechanism 9, a second AR interaction module 18 for capturing the motion trajectory of the double crank mechanism 10, and a third AR interaction module 19 for capturing the motion trajectory of the double rocker mechanism 11. The first AR interaction module 17, the second AR interaction module 18, and the third AR interaction module 19 are sequentially arranged on the other side of the upper end of the demonstration frame 2 from left to right; the output ends of the first AR interaction module 17, the second AR interaction module 18, and the third AR interaction module 19 are connected to the input end of the demonstration screen 20. When in use, the first AR interactive module 17, the second AR interactive module 18, and the third AR interactive module 19 respectively capture the motion trajectories of the crank-rocker mechanism 9, the double crank mechanism 10, and the double rocker mechanism 11, and are connected to the input end of the demonstration screen 20 by a line, so that the motion trajectories captured by the first AR interactive module 17, the second AR interactive module 18, and the third AR interactive module 19 are projected on the demonstration screen 20 in an animated manner, which facilitates the demonstration of the motion trajectory of a single crank-rocker mechanism 9, the double crank mechanism 10, and the double rocker mechanism 11, highlights the key points during the demonstration, and helps to deepen students' understanding of the principles of mechanical motion.

[0029] In this embodiment, a remote control component for regulating the synchronous opening of the motor 3 and the demonstration screen 20 is also included. The remote control component includes a remote control 21, a wireless transmitting module 23, and a wireless receiving module 12. The wireless receiving module 12 is respectively arranged in the motor 3 and the demonstration screen 20, and the wireless transmitting module 23 is arranged in the remote control 21. The remote control 21 is provided with an opening and closing button 22; the opening and closing button 22 regulates the synchronous opening of the motor 3 and the demonstration screen 20; when in use, the opening and closing button 22 is pressed, and the wireless transmitting module 23 transmits a start signal to the wireless receiving module 12, and the motor 3 is regulated to be synchronously opened with the demonstration screen 20 through circuit signal transmission. The motor 3 drives the crank rocker mechanism 9, the double crank mechanism 10, and the double rocker mechanism 11 to perform connecting rod movement through mechanical transmission. At the same time, the mechanical motion trajectory of the plane mechanism is synchronously animated on the demonstration screen 20, and the conclusion and principle are proved by combining the animation experiment demonstration and the physical mechanical movement, which is helpful for students to understand the principle of mechanical movement, improve the teaching quality of mechanical principles and students' knowledge application ability.

[0030] In this embodiment, the control circuit of the present invention is a common circuit in the circuit field. The device of the present invention can be connected to an external power supply through a power line to provide power to the device. Technicians in the relevant technical field can implement it and will not be described in detail here.

[0031] In this embodiment, the forklift 201 is a common forklift equipment, such as a JCPT1212HD model, a GS-3246 model forklift, etc.

[0032] In this embodiment, the motor 3 is a common three-phase asynchronous motor, such as YS7124-0.37KW B5 model, BO2-6324 (B3 model) model and other asynchronous motors.

[0033] In this embodiment, the reduction box 5 is a common reduction box device, such as a worm gear reducer model WXJ5.3-40-1, a BWY27-23-7.5 model, and other reduction motor devices.

[0034] In this embodiment, the wireless receiving module 12 and the wireless transmitting module 23 are common wireless transmission devices, such as WT-5C, WT-6C, and other wireless transmission communication devices.

[0035] In this embodiment, the microcontroller 14 is a common electrical component, such as a single chip microcomputer of the AT89C2051 or TMS320VC5509A model.

[0036] In this embodiment, the relay 13 is a common relay device, such as a JRC-5M / RG4.527.168 model, a JRC-7M model relay, etc.

[0037] In this embodiment, the demonstration screen 20 is a common display screen, such as Mitsubishi AA035AE01, Tianma TM035HDHT1, etc.

[0038] In this embodiment, the first AR interactive module 17, the second AR interactive module 18, and the third AR interactive module 19 adopt AR interactive technology. AR interactive technology is a technology that cleverly integrates virtual information with the real world. The real world and the augmented environment can interact at the same time, which also means that AR technology will have stronger practicality. Nowadays, AR technology has been widely used in education and teaching science popularization training, and is a common existing technology; the first AR interactive module 17, the second AR interactive module 18, and the third AR interactive module 19 respectively capture the motion trajectories of the crank rocker mechanism 9, the double crank mechanism 10, and the double rocker mechanism 11, and draw the motion trajectories into dynamic images. By connecting the lines with the input end of the demonstration screen 20, the captured motion trajectory dynamic images are projected on the demonstration screen 20 in an animated manner.

[0039] During the specific implementation of the present invention: the box cover 101 is movably closed on the teaching demonstration box 1, and the universal wheel 16 facilitates the movement of the teaching demonstration box 1, and the mechanical principle classroom demonstration is carried out in each classroom, and the brake pad 15 fixes the teaching demonstration box 1; when the teaching demonstration box 1 is moved to the mechanical principle classroom, the lifting button 24 is pressed, and the circuit signal transmission of the microcontroller 14 and the relay 13 is used to regulate the forklift 201 and the base plate 202 to rise, and the mechanical motion demonstration mechanism is located above the teaching demonstration box 1. At this time, the opening and closing button 22 is pressed, and the circuit signal transmission is used to regulate the motor 3 and the demonstration screen 20 to start synchronously. The motor 3 drives the crank rocker mechanism 9, the double crank mechanism 10, and the double rocker mechanism 11 to perform connecting rod movement through mechanical transmission, and the mechanical motion trajectory of the plane mechanism is synchronously animated on the demonstration screen 20. At the same time, the first AR interactive module 17 The second AR interactive module 18 and the third AR interactive module 19 respectively capture the motion trajectories of the crank-rocker mechanism 9, the double crank mechanism 10 and the double rocker mechanism 11, and are connected to the input end of the demonstration screen 20 by a line, so as to project the motion trajectories captured by the first AR interactive module 17, the second AR interactive module 18 and the third AR interactive module 19 onto the demonstration screen 20 in an animated manner, so as to facilitate the demonstration of the motion trajectories of a single crank-rocker mechanism 9, the double crank mechanism 10 and the double rocker mechanism 11, and highlight the key points during the demonstration, so as to deepen the students' understanding of the principles of mechanical motion, and prove the conclusions and principles by combining the animated experimental demonstration with the actual mechanical motion, so as to better help students to conduct mechanical structure analysis and motion analysis of planar mechanisms, and help students to understand the principles of mechanical motion, and be more conducive to inspiring thinking, improving the teaching quality of mechanical principles and students' knowledge application ability.

[0040] It is worth noting that: in the description of the present invention, the meaning of "multiple" is two or more than two, unless otherwise clearly defined. In the present invention, unless otherwise clearly defined and defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0041] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A mechanical motion demonstration device based on the mechanical principle classroom, characterized by: include: The device body comprises a teaching demonstration box, a moving mechanism is arranged at the bottom of the teaching demonstration box, a movable box cover is arranged at the top of the teaching demonstration box, and the interior of the teaching demonstration box is hollow; The lifting mechanism includes a fork lift and a base plate. The lower end of the fork lift is arranged at the bottom of the teaching demonstration box, and the upper end of the fork lift is connected to the base plate. When the fork lift is lowered and retracted, it can be completely built into the teaching demonstration box, so that the box cover can be closed conveniently. A mechanical motion demonstration mechanism, comprising a demonstration frame, a connecting rod mechanism, and a transmission component for driving the connecting rod mechanism to move. The demonstration frame is arranged around the base plate, the connecting rod mechanism is arranged at the upper end of the demonstration frame, and the transmission component comprises a motor, a transmission assembly, a reduction box, a bevel gear, a spur gear, and a sprocket. The motor and the reduction box are both arranged on the upper surface of the base plate, the sprocket is arranged at the upper end of the demonstration frame, the sprocket is connected to the driven end of the connecting rod mechanism, the motor is connected to the reduction box for movement through the transmission assembly, the bevel gear is connected to the output shaft of the reduction box through a latch key, and the spur gear is connected to the spur gear through a stack of meshing bevel gears, the coaxial sprocket is driven to move through the cooperation between gears with different numbers of teeth on the gear shaft, and the sprocket drives the connecting rod mechanism at the end to move together during the movement; A mechanical motion animation demonstration device, comprising a demonstration screen for synchronously animating the mechanical motion trajectory of the mechanical motion demonstration mechanism, and an AR interactive module for independently animating the mechanical motion trajectory of the connecting rod mechanism, wherein the demonstration screen is arranged on the outer wall of the demonstration frame, and the AR interactive module is arranged on the upper end surface of the demonstration frame and is aligned with the connecting rod mechanism.

2. A mechanical motion demonstration device based on mechanical principle classroom according to claim 1, characterized in that: The connecting rod mechanism includes a crank-rocker mechanism, a double crank mechanism, and a double rocker mechanism. The crank-rocker mechanism, the double crank mechanism, and the double rocker mechanism are arranged on one side of the upper end of the demonstration frame from left to right in sequence, and the driven gear ends of the crank-rocker mechanism, the double crank mechanism, and the double rocker mechanism are respectively meshed and connected with the sprocket.

3. A mechanical motion demonstration device based on mechanical principle classroom according to claim 2, characterized in that: The AR interaction module includes a first AR interaction module for capturing the motion trajectory of a crank rocker mechanism, a second AR interaction module for capturing the motion trajectory of a double crank mechanism, and a third AR interaction module for capturing the motion trajectory of a double rocker mechanism. The first AR interaction module, the second AR interaction module, and the third AR interaction module are arranged in sequence from left to right on the other side of the upper end of the demonstration frame.

4. A mechanical motion demonstration device based on mechanical principle classroom according to claim 3, characterized in that: The output ends of the first AR interaction module, the second AR interaction module, and the third AR interaction module are connected to the input end of the demonstration screen.

5. The mechanical motion demonstration device based on the mechanical principle classroom according to claim 1 is characterized by: The transmission assembly includes a V-belt, which connects the driving end of the motor and the driven end of the reduction box, so that the motor drives the reduction box to move.

6. The mechanical motion demonstration device based on the mechanical principle classroom according to claim 1 is characterized by: It also includes a control component for regulating the action of the forklift, and the control component includes a lifting button, a microcontroller, and a relay. The lifting button is arranged on the outer wall of the teaching demonstration box, and the microcontroller and the relay are arranged inside the teaching demonstration box.

7. The mechanical motion demonstration device based on the mechanical principle classroom according to claim 1 is characterized by: It also includes a remote control component for controlling the synchronous opening of the motor and the demonstration screen, the remote control component includes a remote controller, a wireless transmitting module, and a wireless receiving module, the wireless receiving module is respectively arranged in the motor and the demonstration screen, the wireless transmitting module is arranged in the remote controller, and an opening and closing button is arranged on the remote controller.

8. The mechanical motion demonstration device based on the mechanical principle classroom according to claim 1 is characterized by: The moving mechanism comprises a plurality of universal wheels, and the plurality of universal wheels are respectively arranged at four ends of the bottom of the teaching demonstration box.

9. The mechanical motion demonstration device based on the mechanical principle classroom according to claim 8, characterized in that: The universal wheels are all provided with brake pads for fixing the teaching demonstration box.

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