Bridge model building teaching aid

Abstract

The utility model discloses a teaching aid for building a bridge model. The teaching aid comprises a base assembly and a connection assembly arranged on the base assembly. The connecting assembly comprises a plurality of inserting blocks, a plurality of connecting rods and a plurality of connecting springs, and the connecting rod springs are arranged at the two ends of each connecting rod; magnetic blocks are arranged in the inserting block and the base assembly; a plurality of limiting grooves for limiting the connecting rod springs and the connecting springs and the magnetic blocks in a magnetic attraction manner are uniformly formed in the outer surface of the inserting block and the outer surface of the base assembly; the connecting rods, the connecting springs, the inserting blocks and the base assembly are freely combined through magnetic attraction connection, a bridge model is built, diversified bridge combination structures can be displayed, the stress condition of a bridge can be clearly observed, operation is easy, the demonstration process is more stable, and the demonstration effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching tools, in particular to a bridge model building teaching tool. Background Art

[0002] CN202422563U discloses a force effect analysis demonstration model, which amplifies various forces on the main beam of the bridge through a "U"-shaped rigid strip to demonstrate the stress condition of the bridge. Although the teaching aid has a simple structure and is easy to operate, it also has several shortcomings: first, bridges are often subjected to multiple points of force, and the teaching aid can only observe the main beam; second, the teaching aid adopts a rigid strip structure, and when it is loaded, the internal force situation cannot be seen, and the display structure is too simple; third, when the teaching aid is demonstrated, the bottom cannot be fixed, resulting in a gap change during the demonstration. Summary of the invention

[0003] The utility model aims to provide a bridge model building teaching aid, which can not only display the diversified bridge combination structure, but also clearly observe the stress condition of the bridge, and the operation is simple, the demonstration process is more stable, and the demonstration effect is better.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A teaching aid for building a bridge model, comprising a base assembly and a connecting assembly arranged on the base assembly; the connecting assembly comprises a plurality of plug-in blocks, connecting rods and connecting springs, both ends of the connecting rods are provided with connecting rod springs; magnetic blocks are provided inside the plug-in blocks and inside the base assembly, and a plurality of limit grooves for magnetically limiting the connecting rod springs and the connecting springs with the magnetic blocks are arranged on the outer surfaces of the plug-in blocks and the outer surfaces of the base assembly; the connecting rods, connecting springs, plug-in blocks and base assembly are freely combined through magnetic connection to build a bridge model.

[0006] Preferably, the plug-in block is in the shape of a regular hexadecahedron, the eight inclined surfaces of the plug-in block are provided with side slots, the eight planes of the plug-in block are provided with straight slots, and the magnetic block built into the plug-in block is a magnetic ball.

[0007] Preferably, the base assembly is composed of at least four magnetic chassis; a cone-shaped body with a smaller top and a larger bottom is provided on the upper part of the magnetic chassis, and the cone-shaped body is composed of four evenly distributed inclined surfaces and a horizontal top surface, and inclined slots are provided on the four inclined surfaces, and a top connecting groove is provided on the horizontal top surface; the magnetic block built into the cone-shaped body is a hemispherical magnetic block.

[0008] Preferably, a suction cup is provided at the bottom of the magnetic chassis, and a knob for controlling the adsorption of the suction cup is provided on the side of the magnetic chassis.

[0009] Preferably, the connecting rod spring is placed obliquely and confined in the oblique slot and the side slot, and the connecting spring is placed vertically and confined in the straight slot and the top slot.

[0010] Preferably, there are at least eight plug-in blocks, at least sixteen connecting springs, and at least sixteen connecting rods.

[0011] Compared with the prior art, the utility model has the following beneficial effects: first, by connecting springs, plug-in blocks, and connecting rod magnetic combinations, different bridge truss models can be freely constructed. While displaying a variety of bridge combination structures, the stress deformation effect of the bridge can be intuitively seen through the deformation of the springs, and the demonstration effect is excellent; second, the construction method of the magnetic combination is very simple to operate and the demonstration effect is better; third, through the setting of the base assembly and the limit groove, the construction and demonstration process is more stable, and the structural changes produced in the teaching are clearer.

[0012] Further beneficial effects: First, by magnetically connecting the connecting spring and the connecting rod spring to the sixteen-sided plug-in block, a connecting bridge is formed, and the side slots and the straight slots on the sixteen-sided plug-in block limit the connecting rod spring and the connecting rod. The setting of the sixteen-sided plug-in block makes the bridge construction more diversified, and the connecting rod spring and the connecting spring are respectively limited in different limiting slots to make the display process more stable; second, the base assembly is composed of at least four magnetic chassis, which improves the diversity of bridge construction while providing a conical body with an oblique slot and a top connecting slot on the magnetic chassis, and the connecting rod spring and the connecting spring are respectively limited in different limiting slots, further improving the stability; third, a suction cup is provided at the bottom of the magnetic chassis, and a knob for controlling the adsorption of the suction cup is provided on the side of the magnetic chassis. When it needs to be fixed, the suction cup is attached to the horizontal desktop and the knob is turned. When it needs to be disassembled, the knob is turned back to its original position and the suction cup is pulled to remove it. The magnetic chassis can be tightened and disassembled quickly at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural diagram of one of the combined forms of the bridge model building teaching aid of the utility model;

[0014] Figure 2 It is a three-dimensional structural schematic diagram of the plug-in blocks in the bridge model building teaching aid of the utility model;

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the magnetic chassis in the bridge model building teaching aid of the utility model;

[0016] Figure 4 It is a three-dimensional structural schematic diagram of the connecting rod in the bridge model building teaching aid of the utility model;

[0017] Figure 5 It is a three-dimensional structural schematic diagram of the connecting spring in the bridge model building teaching aid of the utility model;

[0018] Among them, 1. connection component; 2. base component; 3. plug-in block; 4. connecting spring; 5. connecting rod; 6. magnetic chassis; 30. magnetic ball; 31. side slot; 32. straight slot; 50. connecting rod spring; 60. hemispherical magnetic block; 61. oblique slot; 62. top connection slot; 63. cone. DETAILED DESCRIPTION

[0019] In order to make the technical solution of the utility model clearer, the following Figure 1-5 It should be understood that the specific implementation methods described in this specification are only for explaining the utility model, and are not intended to limit the protection scope of the utility model.

[0020] A bridge model building teaching aid, comprising a base component 2 and a connection component 1 arranged on the base component 2; the connection component 1 comprises a plurality of plug-in blocks 3, a plurality of connecting rods 5, and a plurality of connecting springs 4; a magnetic block is arranged inside the base component 2, and the base component 2 of this embodiment is composed of at least four magnetic chassis 6. The base component 2 can also be a plurality of magnetic parts evenly arranged above the entire base plate. This embodiment takes four magnetic chassis 6 as an example for explanation, but is not limited to the base component of this structure; a cone 63 with a small top and a large bottom is arranged on the upper part of the magnetic chassis 6, and the cone 63 is composed of four evenly arranged inclined surfaces and a horizontal top surface, and inclined slots 61 are evenly arranged on the four inclined surfaces, and a top connection groove 62 is arranged on the horizontal top surface; a built-in There is a hemispherical magnetic block 60, that is, the middle part of the cone 63 is a cavity, and the oblique slot 61 and the top slot 62 are both connected to the middle cavity; a suction cup is provided at the bottom of the magnetic chassis 6 (existing technology, not shown in the figure), and a knob 64 for controlling the adsorption of the suction cup is provided on the side of the magnetic chassis 6. The structure of the knob 64 and the suction cup is existing technology, and the pressure block on the knob 64 tightens or loosens the suction cup as the knob 64 rotates; when the magnetic chassis 6 needs to be fixed on the display table, the suction cup is tightly attached to the horizontal surface of the display table, and then the knob 64 is rotated. The rotation of the knob 64 makes the magnetic chassis 6 more tightly attached to the display table; when it needs to be disassembled, the knob 64 is turned back to its original position, and the magnetic chassis 6 can be disassembled by pulling it, which has better stability and is very convenient to disassemble.

[0021] The plug-in blocks 3 are all in the shape of a regular hexadecahedron, that is, they have four inclined surfaces in the upper layer, six vertical surfaces in the middle layer, four inclined surfaces in the lower layer, a horizontal top surface and a horizontal bottom surface; the plug-in blocks 3 have sixteen outer peripheral surfaces, among which eight inclined surfaces in the upper layer and the lower layer are provided with side slots 31, and the remaining eight planes are provided with straight slots 32; the plug-in blocks 3 are provided with magnetic balls 30 inside, that is, the plug-in blocks 3 are provided with cavities for placing the magnetic balls 30, and the side slots 31 and the straight slots 32 are both connected to the cavity; the number of the plug-in blocks 3 is at least eight.

[0022] Both ends of the connecting rod 5 are provided with connecting rod springs 50 that can be magnetically attracted; both ends of the connecting spring 4 can be magnetically attracted; the connecting spring 4 is placed vertically and limited in the straight slot 32 and the top slot 62, and the connecting rod 5 is placed obliquely and limited in the oblique slot 61 and the side slot 31 by the connecting rod spring 50; there are at least sixteen connecting springs 4 and at least sixteen connecting rods 5; the connecting rod 5, the connecting spring 4, the plug-in block 3, and the base assembly 2 are freely combined through magnetic connection to build a bridge model.

[0023] Attach Figure 1 The bridge model shown in the figure is used as an example to illustrate the construction demonstration, which uses eight plug-in blocks 3, sixteen connecting springs 4, sixteen connecting rods 5 with connecting rod springs 50 fixed at both ends, and four magnetic chassis 6 with suction cups at the bottom.

[0024] ① First, four magnetic base plates 6 are placed in predetermined areas of the display table. After the bottom suction cups are close to the display table, the knob 64 is turned to increase the adsorption strength between the suction cups and the display table.

[0025] ② Take four connecting springs 4, and magnetically connect one end of the four connecting springs 4 to the top connecting groove 62 of the magnetic chassis 6, that is, the four connecting springs 4 are vertically inserted into the magnetic chassis 6;

[0026] ③ Four plug-in blocks 3 are respectively connected to the top ends of the four connecting springs 4, that is, the top ends of the four connecting springs 4 are respectively magnetically connected to the straight slots 32 on the bottom surface of the plug-in blocks 3, and connecting springs 4 are provided between adjacent plug-in blocks 3 for support;

[0027] ④ A connecting rod 5 is provided between two adjacent connecting springs 4, that is, the connecting rod springs 50 at both ends of the connecting rod 5 are magnetically connected between the oblique slot 61 and the side slot 31;

[0028] ⑤ In the straight slots 32 at the top of the four plug-in blocks 3, connecting springs 4 are magnetically attracted respectively, and the top of the connecting springs 4 is magnetically attracted to the connecting plug-in blocks 3. Connecting springs 4 are provided between adjacent plug-in blocks 3 for support, and connecting rods 5 are provided between adjacent connecting springs 4 to form a stable support. The whole is combined in a form that can be viewed intuitively, and the connection of the springs can show the three deformation states of tension, compression and bending of the component under load conditions, and the structural changes produced in teaching are clearer.

[0029] In the description of the present technical solution, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "inner" are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present technical solution and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present technical solution.

[0030] At the same time, in the description of this technical solution, it should be noted that, unless otherwise clearly specified and limited, the terms "fixed" and "matched" 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 directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this technical solution can be understood according to specific circumstances.

[0031] Although embodiments of the present technical solution have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present technical solution, and that the scope of the present technical solution is defined by the appended claims and their equivalents.

Claims

1. A bridge model building teaching aid, Features: The invention comprises a base component (2) and a connecting component (1) arranged on the base component (2); the connecting component (1) comprises a plurality of plug-in blocks (3), connecting rods (5) and connecting springs (4), and connecting rod springs (50) are arranged at both ends of the connecting rod (5); magnetic blocks are arranged inside the plug-in block (3) and inside the base component (2); and a plurality of limit grooves for magnetically limiting the connecting rod springs (50) and the connecting springs (4) with the magnetic blocks are arranged on the outer surfaces of the plug-in block (3) and the outer surfaces of the base component (2); the connecting rods (5), the connecting springs (4), the plug-in block (3) and the base component (2) are freely combined through magnetic connection to build a bridge model.

2. The bridge model building teaching aid according to claim 1, Features: The plug-in block (3) is in the shape of a regular hexadecahedron, eight inclined surfaces of the plug-in block (3) are each provided with a side slot (31), eight plane surfaces of the plug-in block (3) are each provided with a straight slot (32), and the magnetic block built into the plug-in block (3) is a magnetic ball (30).

3. The bridge model building teaching aid according to claim 2, Features: The base assembly (2) is composed of at least four magnetic chassis (6); a cone (63) with a smaller top and a larger bottom is provided on the upper part of the magnetic chassis (6); the cone (63) is composed of four evenly distributed inclined surfaces and a horizontal top surface, and the four inclined surfaces are each provided with an inclined slot (61), and the horizontal top surface is provided with a top connection slot (62); the magnetic block built into the cone (63) is a hemispherical magnetic block (60).

4. The bridge model building teaching aid according to claim 3, Features: A suction cup is provided at the bottom of the magnetic suction chassis (6), and a rotary knob (64) for controlling the suction of the suction cup is provided on the side of the magnetic suction chassis (6).

5. The bridge model building teaching aid according to claim 3, Features: The connecting rod spring (50) is placed obliquely and is limited in the oblique slot (61) and the side slot (31), and the connecting spring (4) is placed vertically and is limited in the vertical slot (32) and the top connection slot (62).

6. A bridge model building teaching aid according to any one of claims 3, 4 and 5, Features: The number of the plug-in blocks (3) is at least eight, the number of the connecting springs (4) is at least sixteen, and the number of the connecting rods (5) is at least sixteen.

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