Connecting rod transmission demonstration device
The linkages demonstration apparatus addresses the inefficiency of teaching linkages by allowing students to visualize the three-dimensional motion through adjustable linkages and a reversible mechanism, reducing the need for lengthy teacher explanations and improving teaching efficiency.
Patent Information
- Application Number
- CN202411698833.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-03-28
AI Technical Summary
Current methods for teaching the principles of linkages in mechanical transmission are inefficient, as students struggle to visualize the three-dimensional motion of linkages, requiring lengthy teacher explanations and increasing teaching burdens.
A linkages demonstration apparatus comprising a base, demonstration board, adjustable linkages, and a reversible linkage mechanism that allows for the assembly and disassembly of linkages to demonstrate various angles and lengths of motion, enabling students to observe the linkages' motion without needing extensive verbal explanations.
This setup allows for the intuitive representation of linkages' motion, reducing the need for prolonged teacher explanations and enhancing teaching efficiency by enabling students to visualize and understand the linkages' motion effectively.
Smart Images
Figure CN119724017A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of connecting rod transmission teaching, in particular to a connecting rod transmission demonstration device. Background Art
[0002] Connecting rod transmission is a commonly used mechanical transmission method that achieves energy transmission through the movement of connecting rods. Connecting rod transmission demonstrations usually involve the coordinated work of a series of mechanical components to show how the connecting rod converts rotational motion into linear motion, or converts linear motion into rotational motion.
[0003] In teaching, students often cannot deeply understand the principles of transmission mechanisms through theoretical knowledge. At present, it is generally demonstrated through dynamic pictures and then explained by teachers. It cannot intuitively express the three-dimensional transmission effect of the connecting rod mechanism, and it is not convenient for students to watch the connecting rod transmission at the same time. Teachers need to give oral explanations while demonstrating, which is time-consuming and increases the teaching burden. Therefore, it is urgent to develop a connecting rod transmission demonstration device for mechanical courses that can save time, intuitively express the connecting rod mechanism, and reduce the teaching burden of teachers. Summary of the invention
[0004] The purpose of the present invention is to provide a connecting rod transmission demonstration device to solve the problems raised in the above background technology.
[0005] To achieve the above object, the present invention provides the following technical solution: a connecting rod transmission demonstration device, comprising:
[0006] A base, wherein the bottom corners of the base are provided with feet, and both sides of the upper end surface of the base are provided with a plurality of slots distributed in a straight line structure;
[0007] A demonstration board, wherein both sides of the bottom end of the demonstration board are provided with a plug connector 1 plugged into the slot; when the demonstration board is parallel to the base, the plug connector 1 is plugged into the slot;
[0008] Multiple connecting rods, two connecting rods form a group, a mounting head is rotatably provided on the bottom wall of one end of the connecting rod, both long side walls of the upper end of the demonstration board are provided with a strip seat, a plurality of mounting grooves are opened on the upper end surface of the strip seat, two mounting heads are respectively rotatably plugged with the mounting grooves on the two strip seats, according to the demonstration requirements, multiple groups of connecting rods are selected, and the mounting heads are respectively rotatably plugged with the mounting grooves on the two strip seats, the connecting rod can be rotated in any direction with the axis of the mounting head as the center, so as to adjust the position of the connecting rod relative to the upper end surface of the demonstration board, and this process is used to demonstrate the process of connecting rod rotation at any angle;
[0009] The flip rod has a connecting plate rotatably connected at both ends of the flip rod, and the upper ends of the connecting plate are rotatably provided with a clamping column on both sides, and the side walls of the connecting rod are provided with a clamping notch, the connecting plate is located below the connecting rod, and the two clamping columns on the connecting plate are respectively inserted into the two clamping notches opposite to the connecting rod, and the two clamping columns on the connecting plate are inserted from the bottom openings of the two clamping notches opposite to the connecting rod until the connecting plate fits the bottom wall of the connecting rod, and the clamping column is clamped in the clamping notch to realize the detachable splicing between the flip rod and the connecting rod. According to the transmission length requirements of the connecting rod, the clamping column can be clamped in the clamping notches at different positions on the connecting rod.
[0010] The transmission demonstration teaching equipment is composed of multiple groups of connecting rods and flip rods connecting each group of connecting rods. According to the requirements of the connecting rod transmission angle and transmission length, the connecting rod mounting head is selectively inserted into the mounting slot at different positions to demonstrate the swinging, rotating and locking transmission modes of the connecting rod at different angles and transmission lengths. It can intuitively express the three-dimensional transmission effect of the connecting rod mechanism, which is convenient for students to watch the connecting rod transmission.
[0011] In a further embodiment, a support column is vertically fixed to the bottom end of the connecting plate, the bottom end of the support column is a spherical structure, and a rolling ball is rotatably embedded in the bottom end of the spherical structure, and the rolling ball is in rolling contact with the demonstration board.
[0012] In a further embodiment, both ends of one long side wall of the demonstration board are provided with plug connectors 2 plugged into the slots, and when the demonstration board is perpendicular to the base, the plug connectors 2 are plugged into the corresponding slots. This is to stand the demonstration board upright, so that students can watch the connecting rod transmission method more intuitively.
[0013] In a further embodiment, the plug connector 1 and the plug connector 2 are both made of iron, and a magnet block is embedded in the bottom wall of the slot.
[0014] In a further embodiment, the sum of the lengths of the two connecting rods in the same group and the length of the flip rod is greater than the gap between the two bar seats.
[0015] In a further embodiment, it also includes a marking sleeve, which is detachably arranged on the flip rod; the marking sleeve is axially provided with a hole for inserting a marking pen, and the marking sleeve is vertically installed under the flip rod, and the marking pen is inserted into the hole at the same time. It is necessary to ensure that the marking pen extends out of the bottom opening of the hole and fits into the upper end surface of the demonstration board. Then, in the process of rotating the connecting rod for demonstration, the flip rod moves synchronously. In this process, the marking pen will draw the flipping trajectory of the connecting rod during the rotation process on the demonstration board, so that students can see clearly and deepen their learning impression.
[0016] In a further embodiment, a plurality of adjustment holes arranged in a straight line structure are provided on the flip rod, a limit plate is fixedly sleeved on the outer wall of the marking sleeve, the upper end of the marking sleeve is inserted from the bottom opening of the adjustment hole, and a spring located between the flip rod and the limit plate is sleeved on the outer wall of the marking sleeve, and the bottom end of the spring is fixedly connected to the limit plate.
[0017] In a further embodiment, an inverted V-shaped notch is formed on the radial side wall of the bottom end of the marking sleeve.
[0018] Compared with the prior art, the present invention has the following beneficial effects:
[0019] The present invention is a connecting rod transmission demonstration device, which adopts a plurality of connecting rod groups and a flip rod connecting each group of connecting rods to form a transmission demonstration teaching equipment. According to the requirements of the connecting rod transmission angle and transmission length, the mounting head of the connecting rod is selectively inserted into the mounting groove at different positions to demonstrate the swinging, rotating and locking transmission modes of the connecting rod at different angles and transmission lengths. It can intuitively express the three-dimensional transmission effect of the connecting rod mechanism, which is convenient for students to watch the connecting rod transmission. There is no need for the teacher to give a long oral explanation during the demonstration, thereby improving the teaching efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the main body split structure of the present invention;
[0021] Figure 2 It is a schematic diagram of the disassembly of a single connecting rod and a flip rod of the present invention;
[0022] Figure 3 For the present invention Figure 1 A magnified view of the structure at center;
[0023] Figure 4 It is a schematic diagram of the split structure in which the demonstration board of the present invention is vertically distributed on the base;
[0024] Figure 5 and Figure 6 It is a schematic diagram of the disassembly of two connecting rods, a demonstration board and a base of the present invention;
[0025] Figure 7 It is a schematic diagram of the assembly structure of the flip rod and the marking sleeve of the present invention;
[0026] Figure 8 It is a schematic diagram of the structure of the marking sleeve of the present invention.
[0027] In the figure: 1. base; 11. slot; 2. demonstration board; 21. bar seat; 22. plug connector 2; 23. plug connector 1; 3. connecting rod; 31. flip rod; 32. support column; 33. clamping column; 34. connecting plate; 35. clamping notch; 36. mounting head; 4. marking sleeve; 41. limit plate; 42. spring. DETAILED DESCRIPTION
[0028] The following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0029] Embodiment, this embodiment provides a connecting rod transmission demonstration device, such as Figure 1 As shown, it includes: a base 1, each of the bottom corners of the base 1 is provided with a foot, and there are four feet distributed at the four corners of the bottom of the base 1 for stably supporting the base 1.
[0030] The base 1 has a plurality of slots 11 arranged in a straight line on both sides of the upper end surface; the demonstration board 2 has a plug connector 23 connected to the slots 11 on both sides of the bottom end of the demonstration board 2. Figure 1 and Figure 3 As shown, when the demonstration board 2 is parallel to the base 1 , the plug connector 23 is plugged into the slot 11 , and the demonstration board 2 is horizontally and stably installed on the upper end surface of the base 1 .
[0031] A plurality of connecting rods 3, two connecting rods 3 form a group, a mounting head 36 is rotatably provided on the bottom wall of one end of the connecting rod 3, a strip seat 21 is provided on both long side walls of the upper end of the demonstration board 2, a plurality of mounting grooves are provided on the upper end surface of the strip seat 21, and two mounting heads 36 are rotatably plugged into the mounting grooves on the two strip seats 21, such as Figure 1 and Figure 2 As shown, according to the demonstration requirements, multiple groups of connecting rods 3 are selected, and are rotatably plugged into the mounting grooves on the two strip seats 21 through the mounting heads 36. The connecting rods 3 can be rotated in any direction with the axis of the mounting head 36 as the center, so as to adjust the position of the connecting rods 3 relative to the upper end surface of the demonstration board 2. This process is used to demonstrate the rotation process of the connecting rods 3 at any angle.
[0032] It also includes a flip rod 31, both ends of the flip rod 31 are rotatably connected to a connecting plate 34, both sides of the upper end of the connecting plate 34 are rotatably provided with a clamping column 33, both side walls of the connecting rod 3 are provided with a clamping notch 35, the connecting plate 34 is located below the connecting rod 3, and the two clamping columns 33 on the connecting plate 34 are respectively inserted into the two opposite clamping notches 35 on the connecting rod 3. Figure 2As shown, the same group of two connecting rods 3 use a flip rod 31 as a connecting medium. According to the demonstration requirements, the two clamping columns 33 on the connecting plate 34 are inserted from the bottom openings of the two clamping notches 35 opposite to the connecting rod 3 until the connecting plate 34 fits on the bottom wall of the connecting rod 3. The clamping columns 33 are clamped in the clamping notches 35 to achieve detachable splicing between the flip rod 31 and the connecting rod 3. Then, while one end of the connecting rod 3 rotates with the mounting head 36 as the rotation center, the position of the clamping notch 35 on the connecting rod 3 that is clamped with the clamping column 33 is the point where it is connected to the flip rod 31 in rotation. The purpose of this is to clamp the clamping column 33 in the clamping notches 35 at different positions on the connecting rod 3 according to the transmission length requirements of the connecting rod 3, and the distance between the clamping column 33 and the mounting head 36 is different.
[0033] like Figure 1 The illustrated set of connecting rods 3 is rotatably connected to a flip rod 31. The two connecting rods 3 can rotate with their respective corresponding mounting heads 36 as the rotation center. According to the transmission length requirements, the clamping positions of the clamping notches 35 and the clamping columns 33 of the two connecting rods 3 are the rotation points between the flip rods 31. Specifically, refer to Figure 1 In the demonstration mode of the rotation of the two connecting rods 3, when one of the connecting rods 3 rotates clockwise with the corresponding mounting head 36 as the rotation center, the other connecting rod 3 will also rotate clockwise with the corresponding mounting head 36 as the rotation center through the linkage of the flip rod 31. This process demonstrates the transmission mode of the swing and rotation of the connecting rod 3. When the angle between the flip rod 31 and the connecting rod 3 is the smallest, the connecting rod 3 will not be able to rotate. This process demonstrates the transmission mode of the locking of the connecting rod 3.
[0034] At the same time, if Figure 5 and Figure 6 As shown, according to different demonstration angles, the mounting head 36 of the connecting rod 3 is selectively inserted into the slot 11 at different positions, that is, the two connecting rods 3 of the same group are staggered and distributed. After being linked with the flip rod 31, the angle between the connecting rod 3 and the bar seat 21 on the corresponding side is different in the initial state, and the rotation angle is different in the initial state. During the demonstration, any connecting rod 3 is rotated clockwise or counterclockwise, and the other connecting rod 3 is driven to rotate synchronously with the corresponding mounting head 36 through the linkage of the flip rod 31. This process demonstrates the transmission mode of the connecting rod 3 at different angles. The clamping column 33 can also be changed to be inserted into the clamping notch 35 at different positions to demonstrate the transmission mode of the connecting rod 3 at different angles and different lengths.
[0035] It should be noted that the sum of the lengths of the two connecting rods 3 and the length of the flip rod 31 in the same group is greater than the gap between the two bar seats 21. The purpose of this design is to prevent the overall length of the two connecting rods 3 and the flip rod 31 from being smaller than the gap between the two bar seats 21 after being assembled, so that the locking transmission mode cannot be demonstrated when the two connecting rods 3 rotate close to the straight-line structure.
[0036] In summary, a plurality of groups of connecting rods 3 and a flip rod 31 connecting each group of connecting rods 3 are used to form a transmission demonstration teaching equipment. According to the transmission angle and transmission length requirements of the connecting rod 3, the mounting head 36 of the connecting rod 3 is selectively inserted into the mounting slot at different positions to demonstrate the swinging, rotating and locking transmission modes of the connecting rod 3 at different angles and transmission lengths. This can intuitively express the three-dimensional transmission effect of the connecting rod mechanism, facilitate students to watch the transmission of the connecting rod 3, and eliminate the need for teachers to give long oral explanations during the demonstration, thereby improving teaching efficiency.
[0037] In this embodiment, further, Figure 2 As shown, a support column 32 is vertically fixed at the bottom end of the connecting plate 34. The bottom end of the support column 32 is a spherical structure, and a rolling ball is rotatably embedded in the bottom end of the spherical structure. The rolling ball rolls and fits with the demonstration board 2. The support column 32 is used to enhance the stability of the vacant support of the flip rod 31 and to prevent the clamping column 33 from falling under its own weight after being inserted from the bottom end of the clamping notch 35, thereby affecting the splicing stability between the flip rod 31 and the connecting rod 3.
[0038] In order to more intuitively demonstrate the motion trajectory of the connecting rod 3 during the transmission process, Figure 7 and Figure 8 As shown, it also includes a marking sleeve 4, which is detachably arranged on the flip rod 31, and the marking sleeve 4 is axially provided with a hole for inserting a marker pen. Specifically, a plurality of adjustment holes arranged in a straight line structure are opened on the flip rod 31, and a limit plate 41 is fixedly sleeved on the outer wall of the marking sleeve 4, and the upper end of the marking sleeve 4 is inserted from the bottom opening of the adjustment hole, and a spring 42 located between the flip rod 31 and the limit plate 41 is sleeved on the outer wall of the marking sleeve 4, and the bottom end of the spring 42 is fixedly connected to the limit plate 41, and the upper end of the marking sleeve 4 is inserted from the bottom opening of the adjustment hole, and the elasticity of the spring 42 is used to push the marking sleeve 4 downward in real time along the axial direction of the adjustment hole, so as to ensure that the bottom end of the marking sleeve 4 has a tendency to approach the upper end surface of the demonstration board 2 in real time. This is to ensure that the pen tip of the marker inserted in the hole can fit the upper end surface of the demonstration board 2 in real time, and as long as the flip rod 31 moves, it can leave a movement trajectory on the upper end surface of the demonstration board 2.
[0039] Install the marking sleeve 4 vertically below the flip rod 31, and insert the marking pen into the hole at the same time. Make sure that the marking pen extends out of the bottom opening of the hole and fits into the upper end surface of the demonstration board 2. Then, during the process of rotating the connecting rod 3 for demonstration, the flip rod 31 moves synchronously. During this process, the marking pen will draw the flipping trajectory of the connecting rod 3 during the rotation process on the demonstration board 2, so that students can see clearly and deepen their learning impression.
[0040] It should be noted that the hole diameter can just meet the needs of inserting the marker pen, ensuring the stability of the marker pen in the hole and preventing the marker pen from moving up and down in the hole, which would cause the pen tip to fail to fit on the upper surface of the demonstration board 2. In order to reduce the resistance to insertion and installation, an inverted V-shaped notch is provided on the radial side wall at the bottom end of the marking sleeve 4. When the marker pen is inserted into the marking sleeve 4, the opening of the inverted V-shaped notch becomes larger, thereby reducing the resistance to insertion of the marker pen.
[0041] A second plug connector 22 plugged into the slot 11 may also be provided at both ends of one of the long side walls of the demonstration board 2. Figure 4 As shown, when the demonstration board 2 is perpendicular to the base 1, the plug connector 22 is plugged into the corresponding slot 11. This is to stand up the demonstration board 2 so that students can watch the transmission mode of the connecting rod 3 more intuitively.
[0042] Here, the first plug connector 23 and the second plug connector 22 are both made of iron, and a magnet block is embedded in the bottom wall of the slot 11, which can absorb the first plug connector 23 and the second plug connector 22. In other words, no matter whether the demonstration board 2 is placed horizontally or vertically on the upper end surface of the base 1, as long as the first plug connector 23 or the second plug connector 22 is inserted into the slot 11, it can be absorbed by the magnet block, thereby enhancing the plugging stability of the first plug connector 23 and the second plug connector 22, and preventing the demonstration board 2 from shaking or tipping over.
[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A connecting rod transmission demonstration device, characterized in that: include: A base (1), wherein the bottom corners of the base (1) are provided with feet, and both sides of the upper end surface of the base (1) are provided with a plurality of slots (11) distributed in a straight line structure; A demonstration board (2), wherein both sides of the bottom end of the demonstration board (2) are provided with a plug connector (23) plugged into the slot (11); when the demonstration board (2) is parallel to the base (1), the plug connector (23) is plugged into the slot (11); A plurality of connecting rods (3), two connecting rods (3) form a group, a mounting head (36) is rotatably provided on the bottom wall of one end of the connecting rod (3), both long side walls of the upper end of the demonstration board (2) are provided with a strip seat (21), a plurality of mounting grooves are opened on the upper end surface of the strip seat (21), and two mounting heads (36) are respectively rotatably plugged into the mounting grooves on the two strip seats (21); A flip rod (31), both ends of the flip rod (31) are rotatably connected to a connecting plate (34), both sides of the upper end of the connecting plate (34) are rotatably provided with a clamping column (33), both side walls of the connecting rod (3) are provided with a clamping notch (35), the connecting plate (34) is located below the connecting rod (3), and the two clamping columns (33) on the connecting plate (34) are respectively inserted into two opposite clamping notches (35) on the connecting rod (3).
2. The connecting rod transmission demonstration device according to claim 1, characterized in that: A support column (32) is vertically fixed to the bottom end of the connecting plate (34); the bottom end of the support column (32) is a spherical structure, and a rolling ball is rotatably embedded in the bottom end of the spherical structure, and the rolling ball is rollingly fitted with the demonstration board (2).
3. The connecting rod transmission demonstration device according to claim 1, characterized in that: Two ends of one long side wall of the demonstration board (2) are provided with plug connectors (22) plugged into the slots (11); when the demonstration board (2) is perpendicular to the base (1), the plug connectors (22) are plugged into the corresponding slots (11).
4. The connecting rod transmission demonstration device according to claim 3, characterized in that: The plug connector 1 (23) and the plug connector 2 (22) are both made of iron, and a magnet block is embedded in the inner bottom wall of the slot (11).
5. The connecting rod transmission demonstration device according to claim 1, characterized in that: The sum of the lengths of the two connecting rods (3) in the same group and the length of the turning rod (31) is greater than the gap between the two strip seats (21).
6. The connecting rod transmission demonstration device according to claim 1, characterized in that: It also includes a marking sleeve (4), wherein the marking sleeve (4) is detachably arranged on the flip rod (31); The marking sleeve (4) is axially provided with a hole for inserting a marking pen.
7. The connecting rod transmission demonstration device according to claim 6, characterized in that: The flip rod (31) is provided with a plurality of adjustment holes arranged in a straight line structure, the outer wall of the marking sleeve (4) is fixedly sleeved with a limit plate (41), the upper end of the marking sleeve (4) is inserted from the bottom opening of the adjustment hole, and the outer wall of the marking sleeve (4) is sleeved with a spring (42) located between the flip rod (31) and the limit plate (41), and the bottom end of the spring (42) is fixedly connected to the limit plate (41).
8. The connecting rod transmission demonstration device according to claim 7, characterized in that: An inverted V-shaped notch is provided on the radial side wall at the bottom end of the marking sleeve (4).