Teaching appliance based on mechanical transmission structure

Abstract

The utility model discloses a teaching aid based on a mechanical transmission structure. The teaching aid comprises a shell, a bottom plate, a motor driver, a front wheel, a driving wheel, a driven wheel, a cam, a flange and a micrometer head. The motor driver is placed on the bottom plate and used for providing energy for the trolley; the front wheels are located right in front of the trolley chassis and wrapped by the chassis; the driving wheel and the driven wheel are respectively sleeved on the second transmission shaft, and the driven wheel is parallel to the driving wheel; the cam and the front wheel are sleeved on the first transmission shaft in parallel, and the cam is nested with the micrometer head of the micrometer through a rubber band; the micrometer head is fixed at the left front part of the bottom frame and is used for controlling the direction of the trolley; the front wheel is used for steering. The motor drives the driving wheel to drive the driven wheel to advance, the cam determines the motion trail of the trolley, and the micrometer head determines the direction of the trolley; the device has relatively high operability, so that a learner can form visual concept cognition on a knowledge system, and the learning efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the field of mechanical engineering, in particular to a teaching tool based on a mechanical transmission structure. Background Art

[0002] Mechanical structure control-based teaching vehicles integrate vehicle design and control system technologies, making them crucial for vehicle engineering students to understand gear transmission, wheel trains, cam structures, and other aspects. However, existing teaching models are often complex, real-world vehicles, making them unsuitable for teaching and hands-on learning. Furthermore, existing teaching methods focus on theory and lack practical application, hindering students' intuitive understanding and resulting in inefficient learning. A simplified, practical, and interactive teaching vehicle model is needed to facilitate the integration of theory and practice and improve learning efficiency.

[0003] Therefore, there is a need for a teaching aid that can combine theoretical knowledge with practice and meet the needs of educational learning and vocational skills assessment. Corresponding courses can be opened based on the car controlled by mechanical structure to understand the basic mechanical components, cam structure, common motion laws of followers, gear trains, CAD engineering drawing and painting parts and other related learning contents, and vocational assessments can be carried out in schools. Utility Model Content

[0004] In view of the above-mentioned prior art, the present invention provides a teaching aid based on a mechanical transmission structure, which mainly solves the problem that the teaching aids in the classroom have low visualization and are not suitable for teaching.

[0005] To achieve the above-mentioned purpose, the technical solution of the embodiment of the utility model is implemented as follows:

[0006] A teaching aid based on a mechanical transmission structure comprises: a frame, a motor, a transmission system and a steering control mechanism are provided on the frame, a driving wheel and a driven wheel are provided on the left and right sides of the rear end of the frame respectively, and a front wheel is provided on one side of the front end of the frame;

[0007] The transmission system includes gears 1, 2, 3, 4, 5 and 6 of different sizes. The motor drives gear 1 to rotate, gear 1 meshes with gear 2, gear 2, gear 3 and the driving wheel are on the same axis, gear 3 meshes with gear 4, gear 4 and gear 5 are on the same axis, and gear 5 meshes with gear 6;

[0008] The steering control mechanism is arranged at the front end side of the frame. The steering control mechanism includes a steering assembly and a control assembly. The steering assembly includes a front fork shaft and a flange shaft. The front fork shaft is rotatably connected to the frame through the flange shaft. The front wheel is installed at the bottom of the front fork shaft. The control assembly includes a cam and a steering lever. The cam and gear six are on the same axis. The steering lever is on the front fork shaft. The cam intermittently pushes the steering lever to adjust the movement direction of the frame.

[0009] Furthermore, the steering lever includes a fine-tuning handle 1, a fine-tuning handle 2 and a micrometer differential head. The fine-tuning handle 1 is fixedly connected to the front fork shaft, the fine-tuning handle 2 is rotatably connected to the front fork shaft, the sleeve shell of the micrometer differential head is fixedly connected to the fine-tuning handle 1, and the differential screw of the micrometer differential head is in contact with the fine-tuning handle 2.

[0010] Furthermore, the driving wheel, the cam and the front wheel are on the same side.

[0011] Furthermore, an elastic element is provided between the fine-tuning handle 1 and the bicycle frame.

[0012] Furthermore, a number of symmetrical triangular through holes and hole arrays are respectively opened on both sides of the body of the frame. The hole array is L-shaped. The body of the frame is provided with a through hole at the front end of the hole array, and the frame is installed with a drive motor and a voice broadcast on the hole array through screws, and gear 1 is connected to the output shaft of the drive motor through a key.

[0013] Furthermore, support base 1 and support base 2 are fixedly connected to both sides of the rear end of the vehicle body of the frame, and the same second transmission shaft is provided on support base 1 and support base 2. The driving wheel is fixedly connected to one end of the second transmission shaft, and the driven wheel is rotatably connected to the other end of the second transmission shaft through a flange bearing. Gear 2 and gear 3 are both connected to the outside of the second transmission shaft through a key.

[0014] Furthermore, a support base three is fixedly connected to the front side of the vehicle body of the frame, and a support base four is provided at the middle part of the front of the vehicle body of the frame. The same first transmission shaft is provided on the support base three and the support base four, and the cam and the gear six are respectively connected to the two ends of the first transmission shaft through keys, and the gear four and the gear five are respectively arranged on both sides of the support base four.

[0015] The beneficial effects of the present invention are:

[0016] The utility model drives six gears of different sizes in sequence through a motor, and finally makes the device move forward as a whole. At the same time, a cam is used to intermittently push the front wheel to deflect, thereby achieving the effect of changing the forward trajectory of the device. Therefore, the conventional motion laws of the gear system, basic mechanical components, cam structure, and master and follower can be more intuitively demonstrated to students. Therefore, the teaching of this device has a high degree of visualization, which is more conducive to teaching.

[0017] In addition, the angle between fine-tuning handle 1 and fine-tuning handle 2 can be adjusted through the micrometer differential head, so the initial distance between fine-tuning handle 2 and the cam can be changed. After that, the rotation of the cam can set a new movement direction for the forward movement of the device, so a more in-depth teaching of the relationship between mechanical parts can be carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1A three-dimensional diagram of a teaching aid based on a mechanical transmission structure of this application;

[0019] Figure 2 A three-dimensional diagram of a steering lever of a teaching aid based on a mechanical transmission structure according to the present application;

[0020] Figure 3 This is a top view of a steering lever of a teaching aid based on a mechanical transmission structure according to the present application.

[0021] Description of Figure Numbers:

[0022] 1. Frame; 2. Front fork shaft; 3. Flange shaft; 4. Front wheel; 5. Fine-tuning handle 1; 6. Fine-tuning handle 2; 7. Cam; 8. First transmission shaft; 9. Support seat 3; 10. Support seat 4; 11. Gear 6; 12. Gear 5; 13. Gear 4; 14. Gear 3; 15. Voice broadcast; 16. Gear 2; 17. Gear 1; 18. L-shaped M3 hole array; 19. Drive motor; 20. Support seat 1; 21. Support seat 2; 22. Second transmission shaft; 23. Driving pulley; 24. Flange bearing; 25. Driven pulley; 26. Triangular through hole; 27. Micrometer micrometer head. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the technical solution of the present invention in conjunction with the accompanying drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. In the following description, reference is made to "some embodiments", which describes a subset of all possible embodiments, but it should be understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

[0024] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0025] Example 1

[0026] Refer to the attached Figure 1The present application provides a teaching aid based on a mechanical transmission structure, including a frame 1. The frame 1 is an irregular one-piece structure and a load-bearing body, and is made of a light-curing resin material. The frame 1 is provided with a motor, a transmission system, and a steering control mechanism. A driving wheel 23 and a driven wheel 25 are provided on the left and right sides of the rear end of the frame 1, respectively, and a front wheel 4 is provided on the front end of the frame 1 near the driving wheel 23.

[0027] The transmission system includes gear 1 17, gear 2 16, gear 3 14, gear 4 13, gear 5 12 and gear 6 11 of different sizes. The motor drives gear 1 17 to rotate, gear 1 17 meshes with gear 2 16, gear 2 16, gear 3 14 and driving wheel 23 are on the same axis, gear 3 14 meshes with gear 4 13, gear 4 13 and gear 5 12 are on the same axis, and gear 5 12 meshes with gear 6 11. The transmission between the above six gears of different sizes can intuitively demonstrate the gear meshing transmission process;

[0028] A steering control mechanism for steering the entire device is provided on the front side of the frame 1. The steering control mechanism includes a steering assembly and a control assembly. The steering assembly includes a front fork shaft 2 and a flange shaft 3. The front fork shaft 2 is rotatably connected to the frame 1 through the flange shaft 3. The front wheel 4 is installed at the bottom of the front fork shaft 2. The control assembly includes a cam 7 and a steering lever. The cam 7 intermittently pushes the steering lever to adjust the movement direction of the frame 1. Therefore, the movement trajectory of the frame 1 can be used to demonstrate the role of the cam 7 in the transmission process, so the display and teaching can be more intuitive and clear.

[0029] Preferably, the steering lever includes a fine-tuning handle 1 5, a fine-tuning handle 2 6 and a micrometer differential head 27. The fine-tuning handle 1 5 is fixedly connected to the front fork shaft 2, the fine-tuning handle 2 6 is rotatably connected to the front fork shaft 2, the sleeve housing of the micrometer differential head 27 is fixedly connected to the fine-tuning handle 1 5, and the differential screw of the micrometer differential head 27 is in contact with the fine-tuning handle 2 6. The micrometer differential head 27 determines the direction of movement of the vehicle body, that is, by twisting the fine-tuning knob of the micrometer differential head 27, the differential screw can push the fine-tuning handle 2 6 to deflect, and then it can be adjusted. The initial distance between the handle and the cam 7 enables the rotation of the cam 7 to move the front wheel 4 to produce different angle changes. In this case, the movement trajectory of the frame 1 will further change, so the relationship between the mechanical components can be taught in more depth. An elastic element is provided between the fine-tuning handle 5 and the frame 1. The elastic element is used to restore the fine-tuning handle 5 and the front fork shaft 2 after deflection, so that the frame 1 can be intermittently deflected during the forward movement, so the students' understanding can be enhanced through repeated demonstrations. The elastic element is a rubber band or a spring.

[0030] Preferably, a through hole is provided on one side of the front end of the vehicle body for easy lifting, and an L-shaped M3 hole array is provided at the rear thereof, through which M3 screws can pass, for installing other modules such as the drive motor 19 and the voice broadcast 15. A triangular through hole 26 is provided on one side of the vehicle body for assembling the energy for driving the vehicle.

[0031] Preferably, a support seat three 9 for steering is provided in the front of the vehicle body, and a support seat four 10 is opposite to the support seat three 9, and three gears are provided on the support seat four 10: gear six 11, gear five 12, and gear four 13; a pair of mutually symmetrical support seats 1 20 and support seats 2 21 are provided at the rear of the vehicle body, and a driving wheel 23 and a driven wheel 25 are provided on the outer sides of the support seats 1 20 and the support seats 2 21 respectively; the driving wheel 23 and the driven wheel 25 are driven by an axis, and this axis is the second transmission shaft 22, on which gear two 16 and gear three 14 are also provided; a voice announcer 15 and a drive motor 19 are respectively provided on the bottom surface of the vehicle body, and a gear 17 is provided on the output shaft of the drive motor 19.

[0032] Preferably, the driving wheel 23 is fixedly connected to the second transmission shaft 22 , and the driving wheel 23 and the driven wheel 25 are driven by a shaft. The flange bearing 24 can reduce friction during the transmission between the driven wheel 25 and the second transmission shaft 22 .

[0033] Preferably, the connection points between the support seat 3 9 and the cam 7, the support seat 1 20 and the support seat 2 21 and the driving wheel 23 and the driven wheel 25 on the vehicle body are padded with O-shaped gaskets respectively.

[0034] Working principle: The teaching vehicle based on mechanical structure control adopts lithium battery module 1 as the energy device, which transmits electric energy to the drive motor 19. The operation of the drive motor 19 drives gear 17, and gear 17 engages with gear 2 16, so that gear 2 16 starts to move. The rotation of gear 2 16 drives the second transmission shaft 22 to rotate. At the same time, gear 2 16 and gear 3 14 are both mounted on the second transmission shaft 22, so that gear 3 14 also starts to rotate. The driving wheel 23 and the driven wheel 25 are both located on the second transmission shaft 22, so they will rotate with the rotation of the second transmission shaft 22, thereby realizing the overall forward movement of the device.

[0035] Gear three 14 and gear four 13 are meshed with each other, so that gear four 13 and gear five 12 are respectively placed on both sides of support seat four 10 and rotate at the same time, and gear five 12 is meshed with gear six 11. Gear six 11 is connected to cam 7 through first transmission shaft 8, so as to realize rotation together. Fine-tuning handle two 6 and frame 1 are connected together through elastic elements. Through this connection method, the movement of cam 7 pushes fine-tuning handle two 6 to deflect and then automatically restore. In this process, fine-tuning handle two 6 rotates synchronously with front wheel 4 through front fork shaft 2. Therefore, the movement of cam 7 directly affects the steering of front wheel 4, thereby realizing steering control when the device moves forward.

[0036] In addition, the angle between the fine-tuning handle 1 5 and the fine-tuning handle 2 6 can be adjusted by twisting the micrometer differential head 27, that is, by deflecting the fine-tuning handle 2 6, the initial distance between it and the cam 7 can be changed. After that, the rotation of the cam 7 can push the front wheel 4 to produce different angles of deflection, thereby providing different running trajectories for the forward movement of the device.

[0037] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. The scope of protection of the present utility model should be based on the scope of protection of the claims.

Claims

1. A teaching aid based on a mechanical transmission structure, comprising a frame (1), characterized in that: The frame (1) is provided with a motor, a transmission system and a steering control mechanism, a driving wheel (23) and a driven wheel (25) are provided on the left and right sides of the rear end of the frame (1), and a front wheel (4) is provided on one side of the front end of the frame (1); The transmission system includes gear 1 (17), gear 2 (16), gear 3 (14), gear 4 (13), gear 5 (12) and gear 6 (11) of different sizes. The motor drives gear 1 (17) to rotate. Gear 1 (17) is meshed with gear 2 (16). Gear 2 (16), gear 3 (14) and driving wheel (23) are on the same axis. Gear 3 (14) is meshed with gear 4 (13). Gear 4 (13) and gear 5 (12) are on the same axis. Gear 5 (12) is meshed with gear 6 (11). The steering control mechanism is arranged at the front end side of the frame (1), and the steering control mechanism includes a steering assembly and a control assembly. The steering assembly includes a front fork shaft (2) and a flange shaft (3). The front fork shaft (2) is rotatably connected to the frame (1) through the flange shaft (3). The front wheel (4) is installed at the bottom of the front fork shaft (2). The control assembly includes a cam (7) and a steering lever. The cam (7) and the gear six (11) are on the same axis. The steering lever is on the front fork shaft (2). The cam (7) intermittently pushes the steering lever to adjust the movement direction of the frame (1).

2. A teaching tool based on a mechanical transmission structure according to claim 1, characterized in that: The steering lever comprises a fine-tuning handle 1 (5), a fine-tuning handle 2 (6) and a micrometer differential head (27); the fine-tuning handle 1 (5) is fixedly connected to the front fork shaft (2); the fine-tuning handle 2 (6) is rotatably connected to the front fork shaft (2); the sleeve shell of the micrometer differential head (27) is fixedly connected to the fine-tuning handle 1 (5), and the differential screw of the micrometer differential head (27) is in contact with the fine-tuning handle 2 (6).

3. The teaching aid based on a mechanical transmission structure according to claim 1, characterized in that: The driving wheel (23), the cam (7) and the front wheel (4) are on the same side.

4. The teaching aid based on a mechanical transmission structure according to claim 2, characterized in that: An elastic element is provided between the fine-tuning handle (5) and the vehicle frame (1).

5. The teaching aid based on a mechanical transmission structure according to claim 1, characterized in that: The vehicle body of the vehicle frame (1) is provided with a plurality of symmetrical triangular through holes (26) and a hole array (18) on both sides, the hole array (18) is L-shaped, the vehicle body of the vehicle frame (1) is provided with a through hole at the front end of the hole array (18), and the vehicle frame (1) is provided with a driving motor (19) and a voice broadcast (15) on the hole array by screws, and the gear 1 (17) is connected to the output shaft of the driving motor (19) by a key.

6. The teaching aid based on a mechanical transmission structure according to claim 1, characterized in that: The rear end of the vehicle body of the frame (1) is fixedly connected to a support seat 1 (20) and a support seat 2 (21) on both sides, and the support seat 1 (20) and the support seat 2 (21) are provided with a same second transmission shaft (22). The driving wheel (23) is fixedly connected to one end of the second transmission shaft (22), and the driven wheel (25) is rotatably connected to the other end of the second transmission shaft (22) through a flange bearing (24). Gear 2 (16) and gear 3 (14) are both connected to the outside of the second transmission shaft (22) through a key.

7. The teaching aid based on a mechanical transmission structure according to claim 1, characterized in that: A support seat three (9) is fixedly connected to the front side of the vehicle body of the frame (1), and a support seat four (10) is provided at the middle part of the front of the vehicle body of the frame (1). The support seat three (9) and the support seat four (10) are provided with the same first transmission shaft (8), the cam (7) and the gear six (11) are respectively connected to the two ends of the first transmission shaft (8) through keys, and the gear four (13) and the gear five (12) are respectively provided on both sides of the support seat four (10).

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