Mechanical design classroom demonstration teaching aid

Abstract

The utility model relates to the technical field of demonstration teaching aids, and discloses a mechanical design classroom demonstration teaching aid, which comprises a demonstration platform. The supporting legs are fixedly installed at the bottom of the demonstration table, and universal wheels are fixedly installed at the bottoms of the supporting legs. A rotating handle is held to rotate, the rotating handle drives a transmission gear to rotate, the transmission gear is meshed with the rotating gear, the transmission gear can drive the rotating gear to rotate, the rotating gear drives a fixing shaft to rotate, the fixing shaft slides on the inner wall of a third sliding hole, and a first sliding rod slides on the inner wall of a sliding rail; a first sliding rod drives a second sliding rod to slide on the inner wall of a fourth sliding hole, meanwhile, the second sliding rod drives an inclined block to slide, so that the inclined block pushes an inclined rod, the inclined rod slides on the inner wall of a fixing frame, and the inclined rod drives a lifting platform to move up and down, and the process shows that when the machine moves, not only is single operation achieved, but also continuous operation can be achieved. Therefore, different requirements can be met, and the effect of demonstrating mechanical operation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of demonstration teaching aids, in particular to a demonstration teaching aid for a mechanical design classroom. Background Technique

[0002] Machinery refers to the general term of machines and mechanisms. Machinery is a tool device that can help people reduce the work difficulty or save effort. Items such as chopsticks, brooms, and tweezers can all be called machinery. They are simple machinery, while complex machinery is composed of two or more simple machineries. Usually, these more complex machineries are called machines. From the perspective of structure and motion, there is no difference between mechanisms and machines, and they are generally referred to as machines.

[0003] During the current teaching process of mechanical design courses, teachers will elaborate on the functions and characteristics of various mechanical components in detail. However, due to conditions, students often can only rely on pictures and video materials to perceive the appearance and operation methods of these components, and cannot directly observe the actual connection and dynamic motion principle between mechanical components in the classroom. This indirect learning method weakens students' ability to intuitively understand mechanical systems, thereby reducing the teaching quality and students' learning effect. Content of the Utility Model

[0004] The purpose of the utility model is to provide a demonstration teaching aid for a mechanical design classroom to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A demonstration teaching aid for a mechanical design classroom, including a demonstration table; support legs fixedly installed at the bottom of the demonstration table, with universal wheels fixedly installed at the bottom of the support legs; a stability component arranged at the bottom of the demonstration table; and a demonstration component arranged on the upper surface of the demonstration table. By setting the universal wheels, the device can be conveniently moved.

[0006] Preferably, the stability component includes: a connection block fixedly connected to one side of the support leg; a first connecting rod arranged on one side of the connection block, and the first connecting rod is rotatably connected to the connection block through a bearing seat; a cushion block fixedly connected to the other end of the first connecting rod; and a fixing plate arranged at the bottom of the demonstration table. By setting the cushion block, the effect of preventing less contact surface with the ground is achieved.

[0007] Preferably, the fixed plate is fixedly connected to the bottom of the demonstration table. A first sliding hole is formed in one side of the fixed plate. A sliding block is arranged on the inner wall of the first sliding hole. The sliding block is slidably connected to the inner wall of the first sliding hole. A second sliding hole is formed in the upper surface of the sliding block. One end of the sliding block is provided with a second connecting rod. The second connecting rod is movably connected to the sliding block. The other end of the second connecting rod is movably connected to the first connecting rod through a bearing seat. A limiting rod is arranged on the inner wall of the second sliding hole. By providing the limiting rod, the effect of fixing the first connecting rod is achieved.

[0008] Preferably, the limiting rod is slidably connected to the inner wall of the second sliding hole. A first limiting plate is arranged on one side of the fixed plate. The first limiting plate is fixedly connected to one side of the fixed plate. A limiting groove is formed in one side of the first limiting plate. The limiting rod is adapted to the first limiting plate. A fixing rod is arranged on one side of the first connecting rod. The fixing rod is fixedly connected to one side of the first connecting rod. By providing the fixing rod, the function of connecting to another first connecting rod is achieved.

[0009] Preferably, the demonstration assembly includes: a first fixed block fixedly connected to the upper surface of the demonstration table; a transmission gear arranged on one side of the first fixed block. The transmission gear is rotatably connected to the first fixed block through a bearing seat; a rotating handle rotatably connected to one side of the transmission gear; a rotating gear arranged on the outer wall of the transmission gear. By providing the transmission gear, the function of transmission is achieved.

[0010] Preferably, the rotating gear meshes with the transmission gear. A second fixed block is arranged on one side of the rotating gear. The second fixed block is fixedly connected to the upper surface of the demonstration table. The second fixed block is rotatably connected to the rotating gear through a bearing seat. A fixed shaft is arranged on the other side of the rotating gear. The fixed shaft is fixedly connected to the other side of the rotating gear. A first sliding rod is arranged on the outer wall of the fixed shaft. A third sliding hole is formed in one side of the first sliding rod. The first sliding rod is movably connected to the fixed shaft. By providing the fixed shaft, the effect of driving the first sliding rod to move is achieved.

[0011] Preferably, a slide rail is arranged at the bottom of the first sliding rod. The slide rail is fixedly connected to the upper surface of the demonstration table. The inner wall of the slide rail is slidably connected to the first sliding rod. A second limiting plate is arranged at one end of the slide rail. The second limiting plate is fixedly connected to one end of the slide rail. A fourth sliding hole is formed in one side of the second limiting plate. A second sliding rod is arranged on the inner wall of the fourth sliding hole. The second sliding rod is slidably connected to the inner wall of the fourth sliding hole. One end of the second sliding rod is fixedly connected to the first sliding rod. By providing the second limiting plate, the effect of limiting the first sliding rod is achieved.

[0012] Preferably, an inclined block is provided at the other end of the second sliding rod. The inclined block is fixedly connected to the other end of the second sliding rod. A support rod is provided on the upper surface of the demonstration table. The support rod is fixedly connected to the upper surface of the demonstration table. A fixed frame is provided on the upper surface of the support rod. The fixed frame is fixedly connected to the upper surface of the support rod. An inclined rod is provided on the inner wall of the fixed frame. The inclined rod is slidably connected to the inner wall of the fixed frame. The inclined rod is adapted to the inclined block. A lifting platform is provided on the upper surface of the inclined rod. The lifting platform is fixedly connected to the upper surface of the inclined rod. By providing the fixed frame, the effect of stabilizing the up-and-down sliding of the fixed frame is achieved.

[0013] The utility model provides a mechanical design classroom demonstration teaching aid, which has the following beneficial effects:

[0014] (1) By holding the rotating handle and rotating it, the rotating handle drives the transmission gear to rotate. Since the transmission gear meshes with the rotating gear, the transmission gear drives the rotating gear to rotate. The rotating gear drives the fixed shaft to rotate, causing the fixed shaft to slide inside the inner wall of the third sliding hole, enabling the first sliding rod to slide inside the inner wall of the slide rail. The first sliding rod drives the second sliding rod to slide inside the inner wall of the fourth sliding hole. At the same time, the second sliding rod drives the inclined block to slide, causing the inclined block to push the inclined rod. The inclined rod slides inside the inner wall of the fixed frame, causing the inclined rod to drive the lifting platform to move up and down. This process demonstrates that when a machine is in motion, it is not only a single operation but can also perform a series of operations, thus being able to meet different requirements and achieving the effect of demonstrating the operation of the machine.

[0015] (2) When teaching needs to be carried out, by sliding the limiting rod upward, the limiting rod slides inside the inner wall of the second sliding hole. At the same time, the limiting rod slides out of the limiting groove. At this time, the first connecting rod can be rotated. At the same time, the first connecting rod drives the sliding block to slide inside the inner wall of the first sliding hole through the second connecting rod, causing the cushion block to contact the podium or the ground. Then, the limiting rod is released, causing the limiting rod to be stuck inside the inner wall of the limiting groove, fixing the first connecting rod and preventing the support leg from moving, thus achieving the effect of stabilizing the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional view of the utility model;

[0017] Figure 2 is a top view of the utility model;

[0018] Figure 3 is a partial view of the stability component of the utility model;

[0019] Figure 4 is a view of the demonstration component of the utility model.

[0020] In the figure: 1 demonstration table, 2 support leg, 3 stability component, 4 demonstration component;

[0021] 311 connecting block, 312 connecting rod 1, 313 spacer block, 314 fixing plate, 315 sliding block, 316 connecting rod 2, 317 limiting rod, 318 limiting plate 1, 319 fixing rod;

[0022] 411 fixing block 1, 412 transmission gear, 413 rotating handle, 414 rotating gear, 415 fixing block 2, 416 fixing shaft, 417 sliding rod 1, 418 slide rail, 419 limiting plate 2, 420 sliding rod 2, 421 inclined block, 422 support rod, 423 fixing frame, 424 inclined rod, 425 lifting platform. Specific implementation mode

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0025] Embodiment 1

[0026] A preferred embodiment of a mechanical design classroom demonstration teaching aid provided by the present invention is as Figures 1-4 shown: A mechanical design classroom demonstration teaching aid includes a demonstration table 1; support legs 2 fixedly installed at the bottom of the demonstration table 1, with universal wheels fixedly installed at the bottom of the support legs 2; a stability component 3 arranged at the bottom of the demonstration table 1; and a demonstration component 4 arranged on the upper surface of the demonstration table 1.

[0027] The stable component 3 includes: a connecting block 311, fixedly connected to one side of the support leg 2; a first connecting rod 312, arranged on one side of the connecting block 311, and the first connecting rod 312 is rotatably connected to the connecting block 311 through a bearing seat; a cushion block 313, fixedly connected to the other end of the first connecting rod 312; a fixing plate 314, arranged at the bottom of the demonstration table 1; the fixing plate 314 is fixedly connected to the bottom of the demonstration table 1, a first sliding hole is opened on one side of the fixing plate 314, a sliding block 315 is arranged on the inner wall of the first sliding hole, the sliding block 315 is slidably connected to the inner wall of the first sliding hole, a second sliding hole is opened on the upper surface of the sliding block 315, one end of the sliding block 315 is provided with a second connecting rod 316, the second connecting rod 316 is movably connected to the sliding block 315, the other end of the second connecting rod 316 is movably connected to the first connecting rod 312 through a bearing seat, and a limiting rod 317 is arranged on the inner wall of the second sliding hole; the limiting rod 317 is slidably connected to the inner wall of the second sliding hole, a first limiting plate 318 is arranged on one side of the fixing plate 314, the first limiting plate 318 is fixedly connected to one side of the fixing plate 314, a limiting groove is opened on one side of the first limiting plate 318, the limiting rod 317 is adapted to the first limiting plate 318, and a fixing rod 319 is arranged on one side of the first connecting rod 312, and the fixing rod 319 is fixedly connected to one side of the first connecting rod 312;

[0028] Furthermore, in this embodiment, when teaching needs to be carried out, the limiting rod 317 is slid upward. The limiting rod 317 slides on the inner wall of the second sliding hole, and at the same time, the limiting rod 317 will slide out of the limiting groove. At this time, the first connecting rod 312 can be rotated. At the same time, the first connecting rod 312 drives the sliding block 315 to slide on the inner wall of the first sliding hole through the second connecting rod 316, so that the cushion block 313 contacts the podium or the ground. Then, the limiting rod 317 is released, so that the limiting rod 317 is stuck on the inner wall of the limiting groove to fix the first connecting rod 312.

[0029] Embodiment 2

[0030] On the basis of Embodiment 1, a preferred embodiment of a mechanical design classroom demonstration teaching aid provided by the present utility model is as follows Figures 1-4As shown in the figure: The demonstration component 4 includes: a first fixed block 411, fixedly connected to the upper surface of the demonstration table 1; a transmission gear 412, arranged on one side of the first fixed block 411, and the transmission gear 412 is rotatably connected to the first fixed block 411 through a bearing seat; a rotating handle 413, rotatably connected to one side of the transmission gear 412; a rotating gear 414, arranged on the outer wall of the transmission gear 412; the rotating gear 414 meshes with the transmission gear 412, and a second fixed block 415 is arranged on one side of the rotating gear 414, the second fixed block 415 is fixedly connected to the upper surface of the demonstration table 1, and the second fixed block 415 is rotatably connected to the rotating gear 414 through a bearing seat. A fixed shaft 416 is arranged on the other side of the rotating gear 414, the fixed shaft 416 is fixedly connected to the other side of the rotating gear 414, a first sliding rod 417 is arranged on the outer wall of the fixed shaft 416, a third sliding hole is opened on one side of the first sliding rod 417, and the first sliding rod 417 is movably connected to the fixed shaft 416; a slide rail 418 is arranged at the bottom of the first sliding rod 417, the slide rail 418 is fixedly connected to the upper surface of the demonstration table 1, the inner wall of the slide rail 418 is slidably connected to the first sliding rod 417, a second limiting plate 419 is arranged at one end of the slide rail 418, the second limiting plate 419 is fixedly connected to one end of the slide rail 418, a fourth sliding hole is opened on one side of the second limiting plate 419, a second sliding rod 420 is arranged on the inner wall of the fourth sliding hole, the second sliding rod 420 is slidably connected to the inner wall of the fourth sliding hole, and one end of the second sliding rod 420 is fixedly connected to the first sliding rod 417; a tilt block 421 is arranged at the other end of the second sliding rod 420, the tilt block 421 is fixedly connected to the other end of the second sliding rod 420, a support rod 422 is arranged on the upper surface of the demonstration table 1, the support rod 422 is fixedly connected to the upper surface of the demonstration table 1, a fixed frame 423 is arranged on the upper surface of the support rod 422, the fixed frame 423 is fixedly connected to the upper surface of the support rod 422, an inclined rod 424 is arranged on the inner wall of the fixed frame 423, the inclined rod 424 is slidably connected to the inner wall of the fixed frame 423, the inclined rod 424 is adapted to the tilt block 421, and a lifting platform 425 is arranged on the upper surface of the inclined rod 424, the lifting platform 425 is fixedly connected to the upper surface of the inclined rod 424;

[0031] Further, in this embodiment, by holding the rotating handle 413 and rotating it, the rotating handle 413 drives the transmission gear 412 to rotate. Since the transmission gear 412 meshes with the rotating gear 414, the transmission gear 412 will drive the rotating gear 414 to rotate. The rotating gear 414 drives the fixed shaft 416 to rotate, causing the fixed shaft 416 to slide inside the third sliding hole, so that the first sliding rod 417 slides inside the slide rail 418. The first sliding rod 417 drives the second sliding rod 420 to slide inside the fourth sliding hole. At the same time, the second sliding rod 420 drives the tilt block 421 to slide, so that the tilt block 421 pushes the inclined rod 424. The inclined rod 424 slides inside the fixed frame 423, causing the inclined rod 424 to drive the lifting platform 425 to move up and down. This process reflects that when the machine is in motion, it is not just a single operation, but can also perform a series of operations, so as to be able to meet different requirements.

[0032] When in use, first, when teaching needs to be expanded, the limiting rod 317 is slid upward. The limiting rod 317 slides on the inner wall of the second sliding hole. At the same time, the limiting rod 317 slides out of the limiting groove. At this time, the first connecting rod 312 can be rotated. At the same time, the first connecting rod 312 drives the sliding block 315 to slide on the inner wall of the first sliding hole through the second connecting rod 316, so that the cushion block 313 contacts the podium or the ground. Then, the limiting rod 317 is released, so that the limiting rod 317 is stuck on the inner wall of the limiting groove, fixing the first connecting rod 312 to prevent the universal wheel from moving. Immediately afterwards, hold the rotating handle 413 and rotate it. The rotating handle 413 drives the transmission gear 412 to rotate. Because the transmission gear 412 meshes with the rotating gear 414, the transmission gear 412 drives the rotating gear 414 to rotate. The rotating gear 414 drives the fixed shaft 416 to rotate, so that the fixed shaft 416 slides on the inner wall of the third sliding hole, making the first sliding rod 417 slide on the inner wall of the slide rail 418. The first sliding rod 417 drives the second sliding rod 420 to slide on the inner wall of the fourth sliding hole. At the same time, the second sliding rod 420 drives the inclined block 421 to slide, so that the inclined block 421 pushes the inclined rod 424. The inclined rod 424 slides on the inner wall of the fixed frame 423, and the inclined rod 424 drives the lifting platform 425 to move up and down. This process shows that when the machine is in motion, it is not just a single operation, but can also perform a series of operations, so as to be able to meet different needs and play a role in demonstrating the operation of the machine.

[0033] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A mechanical design classroom demonstration teaching aid, characterized in that: The invention comprises a demonstration table (1); A support leg (2) fixedly mounted on the bottom of the demonstration platform (1), wherein a universal wheel is fixedly mounted on the bottom of the support leg (2); A stabilizing component (3) disposed at the bottom of the demonstration platform (1); A demonstration component (4) is arranged on the upper surface of the demonstration platform (1); the demonstration component (4) comprises: A fixing block 1 (411), fixedly connected to the upper surface of the demonstration platform (1); A transmission gear (412) is arranged on one side of the fixing block 1 (411), and the transmission gear (412) is rotationally connected to the fixing block 1 (411) via a bearing seat; Turn the handle (413) to rotate the side connected to the transmission gear (412); A rotating gear (414) is arranged on the outer wall of the transmission gear (412); the rotating gear (414) meshes with the transmission gear (412); a second fixing block (415) is arranged on one side of the rotating gear (414); the second fixing block (415) is fixedly connected to the upper surface of the demonstration platform (1); the second fixing block (415) is rotationally connected to the rotating gear (414) through a bearing seat; a fixed shaft (416) is arranged on the other side of the rotating gear (414); the fixed shaft (416) is fixedly connected to the other side of the rotating gear (414); The outer wall of the fixed shaft (416) is provided with a sliding rod (417), and a sliding hole (3) is opened on one side of the sliding rod (417). The sliding rod (417) is movably connected to the fixed shaft (416); a sliding rail (418) is provided at the bottom of the sliding rod (417), and the sliding rail (418) is fixedly connected to the upper surface of the demonstration platform (1). The inner wall of the sliding rail (418) is slidably connected to the sliding rod (417), and a limiting plate (419) is provided at one end of the sliding rail (418), and the limiting plate (419) is fixedly connected to the sliding rail (418). ) at one end, a sliding hole 4 is opened on one side of the limiting plate 2 (419), a sliding rod 2 (420) is arranged on the inner wall of the sliding hole 4, the sliding rod 2 (420) is slidably connected to the inner wall of the sliding hole 4, one end of the sliding rod 2 (420) is fixedly connected to the sliding rod 1 (417); a tilting block (421) is arranged on the other end of the sliding rod 2 (420), the tilting block (421) is fixedly connected to the other end of the sliding rod 2 (420), a support rod (422) is arranged on the upper surface of the demonstration platform (1), the support rod (422) is fixedly connected to The upper surface of the demonstration platform (1) is provided with a fixing frame (423) on the upper surface of the support rod (422), the fixing frame (423) is fixedly connected to the upper surface of the support rod (422), the inner wall of the fixing frame (423) is provided with a tilting rod (424), the tilting rod (424) is slidably connected to the inner wall of the fixing frame (423), the tilting rod (424) is adapted to the tilting block (421), and the upper surface of the tilting rod (424) is provided with a lifting platform (425), the lifting platform (425) is fixedly connected to the upper surface of the tilting rod (424).

2. A mechanical design classroom demonstration teaching aid according to claim 1, characterized in that: The stabilizing component (3) comprises: A connecting block (311) fixedly connected to one side of the supporting leg (2); A connecting rod (312) is arranged on one side of the connecting block (311), and the connecting rod (312) is rotatably connected to the connecting block (311) via a bearing seat; A cushion block (313) is fixedly connected to the other end of the connecting rod 1 (312); The fixing plate (314) is arranged at the bottom of the demonstration platform (1).

3. A mechanical design classroom demonstration teaching aid according to claim 2, characterized in that: The fixing plate (314) is fixedly connected to the bottom of the demonstration platform (1); a sliding hole 1 is provided on one side of the fixing plate (314); a sliding block (315) is provided on the inner wall of the sliding hole 1; the sliding block (315) is slidably connected to the inner wall of the sliding hole 1; a sliding hole 2 is provided on the upper surface of the sliding block (315); a connecting rod 2 (316) is provided at one end of the sliding block (315); the connecting rod 2 (316) is movably connected to the sliding block (315); the other end of the connecting rod 2 (316) is movably connected to the connecting rod 1 (312) via a bearing seat; and a limiting rod (317) is provided on the inner wall of the sliding hole 2.

4. A mechanical design classroom demonstration teaching aid according to claim 3, characterized in that: The limit rod (317) is slidably connected to the inner wall of the second sliding hole; a limit plate (318) is provided on one side of the fixed plate (314); the limit plate (318) is fixedly connected to one side of the fixed plate (314); a limit groove is provided on one side of the limit plate (318); the limit rod (317) is matched with the limit plate (318); a fixed rod (319) is provided on one side of the connecting rod (312); the fixed rod (319) is fixedly connected to one side of the connecting rod (312).

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