Bridge structure demonstration model
By designing an adjustable bridge structure demonstration model, including bridge decks and booms, to simulate the load bearing strength of the bridge structure under different conditions, the problem that the existing model cannot show the influence of multivariables is solved and students' learning effect is improved.
Patent Information
- Application Number
- CN202421354293.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2024-12-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing bridge structure simulation model has a single structure and cannot effectively demonstrate the impact of different factors on the bridge structure performance, affecting students' learning effects.
A bridge structure demonstration model was designed, including the bridge main body, bridge deck, measuring trolley and adjustable boom. By adjusting the material, structure, number and position of the bridge deck, the load bearing strength of the bridge structure under different conditions is simulated. The measurement cart and laser measurement components are used to monitor the deformation of the bridge deck in real time, and intuitively display the impact of different variables on the bridge structure.
It enhances students' understanding and understanding of bridge structure, and displays the impact of different factors on the bridge design process through multivariate simulation, improving teaching effect.
Smart Images
Figure CN222190137U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of teaching instruments and appliances, and particularly relates to a bridge structure demonstration model. Background Art
[0002] Bridges generally refer to structures built across rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. In order to adapt to the modern high-speed development of the transportation industry, bridges are also extended to buildings that cross mountain streams, poor geology, or meet other transportation needs to make passage more convenient. Since the structural characteristics of bridges involve multidisciplinary knowledge, the interweaving of knowledge points between subjects in the teaching process, and the description of text and pictures are not conducive to students' learning and understanding, so it is necessary to build a demonstration model to improve students' learning effect.
[0003] Although several bridge structure simulation models are disclosed in the prior art, most of these models have a single structure and can only demonstrate the impact of one variable on the bridge structure. They are unable to simulate multiple variables from multiple angles, such as the structural characteristics of the load-bearing structure and the number of support rods. Relying solely on a single structural model cannot well show students the impact of different factors on the performance of the bridge structure during the bridge design process, which will affect students' understanding and knowledge, and ultimately affect students' learning outcomes. Utility Model Content
[0004] The utility model provides a bridge structure demonstration model, aiming to solve the problem that most of the current bridge structure simulation models have a single structure and cannot well show students the influence of different factors on the performance of the bridge structure during the bridge design process.
[0005] The utility model is implemented in this way: a bridge structure demonstration model comprises:
[0006] A bridge body, the bridge body comprising a frame and a bracket, the bracket being erected above the frame;
[0007] A bridge deck, both ends of which are detachably fixedly connected to the frame, the bridge deck is located below the bracket, and a plurality of suspension rods are provided between the bridge deck and the bracket;
[0008] The measuring trolley comprises a chassis, a driving mechanism and guide wheels; the driving mechanism is assembled on the chassis, and the guide wheels slide in guide grooves provided on the surface of the bridge deck; under the limiting action of the guide wheels, the driving mechanism drives the measuring trolley to perform linear motion along the bridge deck.
[0009] Preferably, the driving mechanism in the measuring trolley includes a dual-axis motor and a driving wheel, the dual-axis motor is arranged on the chassis, the driving wheels are arranged on both sides of the dual-axis motor and are in contact with the bridge deck; the guide wheels are arranged on the end surface of the chassis away from the bracket, and the number of guide wheels is at least two groups; a shelf is also provided above the chassis, and the shelf is erected above the driving mechanism through a support rod.
[0010] Preferably, the hanger includes: a screw, a locking nut and a butterfly nut; one end of the screw is assembled in a screw hole provided on the bracket through the locking nut and the butterfly nut, and the other end of the screw is assembled on the bridge deck through the locking nut and the butterfly nut. The hanger can be connected to the bridge deck in a vertical or inclined manner to simulate the state of the bridge deck with different force models.
[0011] Preferably, the bridge deck is connected to the frame via a bolt structure, and the bridge deck is easy to disassemble and maintain via the bolt structure. The influence of structure and material on bridge rigidity can be more intuitively demonstrated by replacing the bridge deck structure.
[0012] Preferably, a reflective panel is further provided under the bridge deck; a measuring component is provided on the measuring trolley, the measuring component corresponds to the position of the guide groove, and the laser emitted by the measuring component passes through the guide groove and reaches the reflective panel to obtain the distance data between the measuring component and the reflective panel.
[0013] Preferably, a gyroscope is also fixedly mounted on the measuring component, and the gyroscope records the angle α between the measuring component and the vertical line. The vertical height difference h between the current measuring trolley and the bridge deck is obtained by simple data calculation through the measured distance. In some structures where the deformation data is not easy to observe with the naked eye, the vertical height difference h data can be used to reflect the stiffness of the bridge deck.
[0014] Preferably, the chassis is also provided with a universal wheel, which is located on the end face of the chassis where the guide wheel is provided. The universal wheel is a ball-bearing universal wheel, which serves as an auxiliary wheel to maintain the distance between the chassis and the bridge deck. The number of universal wheels can be one group to form a rear three-point structure, or two groups to form a four-wheel vehicle structure.
[0015] Compared with the prior art, the embodiments of the present application have the following beneficial effects:
[0016] In the bridge structure demonstration model provided by the utility model, during the bridge structure demonstration process, the material, structure and size of the bridge deck itself are used as the first variable in the demonstration process. It should be noted that other data in the bridge deck size except thickness should remain unchanged, and guide grooves of the same size structure are opened on bridge decks with different structural characteristics; the number and connection position of the hangers are used as the second variable, and the counterweights stacked on the shelves are used as the third variable. During the demonstration and analysis process, the first variable, the second variable and the third variable are adjusted to simulate the bearing strength of the bridge structure after the variables change under different conditions; the influence of different variables on the bridge structure is intuitively displayed, so as to enhance students' understanding and knowledge of the bridge structure and enhance the learning effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of a bridge structure demonstration model provided by the utility model.
[0018] Figure 2 It is a schematic diagram of the main structure of a bridge of the bridge structure demonstration model provided by the utility model.
[0019] Figure 3 The utility model is a schematic diagram of the suspension rod structure of the bridge structure demonstration model provided by the utility model.
[0020] Figure 4 It is a schematic diagram of the structure of a measuring trolley in a bridge structure demonstration model provided by the utility model.
[0021] Figure 5 The utility model is a schematic diagram of the guide wheel and universal wheel structure of the bridge structure demonstration model provided by the utility model.
[0022] Figure 6 The utility model is a schematic diagram of the structure of the measuring trolley moving process of the bridge structure demonstration model provided by the utility model.
[0023] Figure 7 It is a schematic diagram of the connection structure of different numbers of hangers of the bridge structure demonstration model provided by the utility model.
[0024] Reference numerals:
[0025] 1. Bridge body; 11. Frame; 12. Bracket; 13. Suspension rod; 131. Screw rod; 132. Lock nut; 133. Butterfly nut; 14. Bridge deck; 141. Guide groove; 15. Reflection panel;
[0026] 2. Measuring trolley; 21. Chassis; 22. Dual-axis motor; 23. Driving wheel; 24. Universal wheel; 25. Measuring component; 26. Shelf; 27. Guide wheel. DETAILED DESCRIPTION
[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.
[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0029] like Figure 1-Figure 7 As shown, the embodiment of the utility model provides a bridge structure demonstration model, including:
[0030] The bridge body 1 includes a frame 11 and a bracket 12. The bracket 12 is erected above the frame 11. The frame 11 is used as a supporting component to simulate the pier of the bridge, and the bracket 12 is arranged above the frame 11 to act as a main cable in the bridge.
[0031] A bridge deck 14, wherein both ends of the bridge deck 14 are connected to the frame 11, the bridge deck 14 is located below the bracket 12, and a suspension rod 13 is provided between the bridge deck 14 and the bracket 12;
[0032] The measuring trolley 2 comprises a chassis 21, a driving mechanism and a guide wheel 27. The driving mechanism is assembled on the chassis 21, and the guide wheel 27 slides in a guide groove 141 provided on the surface of the bridge deck 14.
[0033] In an embodiment of the utility model, the measuring trolley 2 is loaded with heavy objects and travels along a prescribed route on the bridge deck 14. The deformation of the bridge deck 14 is observed during the travel of the measuring trolley 2 to analyze the influence of different materials and different structures on the bridge structure. In the present application, the bridge deck 14 can be replaced with different thicknesses or different materials according to the demonstration needs to analyze the influence of materials and structures on the bridge structure. At the same time, the number and position of the hangers 13 between the bridge deck 14 and the bracket 12 can also be adjusted to analyze the relationship between different bridge structures and intuitively demonstrate the influence of the structure and materials in the bridge on the strength of the bridge.
[0034] In this embodiment, the driving mechanism in the measuring trolley 2 includes a dual-axis motor 22 and a driving wheel 23. The dual-axis motor 22 is arranged on the chassis 21, and the driving wheel 23 is arranged on both sides of the dual-axis motor 22 and is in contact with the bridge deck 14. The number of the guide wheels 27 is at least two groups, and the guide wheel group formed by the guide wheels 27 is arranged parallel to the forward direction of the measuring trolley 2, ensuring that the measuring trolley 2 can travel in a straight line on the guide groove 141.
[0035] A shelf 26 is also provided above the chassis 21, and a support rod is provided between the chassis 21 and the shelf 26; the shelf 26 is mainly used to place weights and other counterweights, so as to increase the overall weight of the measurement trolley 2 during the experiment to obtain the deformation state of the bridge deck 14 under different pressure states.
[0036] In the process of bridge structure demonstration, the material, structure and size of the bridge deck 14 itself are used as the first variable in the demonstration process. It should be noted that the data of the bridge deck 14 except the thickness should remain unchanged, and the guide grooves 141 of the same size and structure are provided on the bridge decks 14 with different structural characteristics. The number and connection position of the suspenders 13 are used as the second variable, and the counterweights stacked on the shelves 26 are used as the third variable. In the process of demonstration and analysis, the first variable, the second variable and the third variable are mainly adjusted; the influence of different variables on the bridge structure is intuitively displayed.
[0037] As a preferred implementation in this embodiment, a reflective panel 15 is further provided under the bridge deck 14. A measuring component 25 is provided on the measuring trolley 2, and the position of the measuring component 25 corresponds to the position of the guide groove 141. The laser emitted by the measuring component 25 passes through the guide groove 141 and reaches the reflective panel 15 to obtain the distance data between the measuring component 25 and the reflective panel 15.
[0038] In the present application, a gyroscope is also fixedly installed on the measuring component 25. The gyroscope is an existing laser gyroscope device. The gyroscope records the angle α between the measuring component 25 and the vertical line of the ground. The vertical height difference h between the current measuring trolley 2 and the bridge deck 14 is obtained by measuring the distance through simple data calculation; when the angle α is zero, it indicates that the measuring trolley 2 is perpendicular to the bridge deck 14. The height value at this time reflects the deformation state of the measuring trolley 2 after the bridge deck 14 is pressed by the measuring trolley 2. In some structures where the deformation data is not easy to observe with the naked eye, the stiffness of the bridge deck 14 can be reflected by the vertical height difference h data.
[0039] When the value of the vertical height difference h is smaller, it indicates that the deformation degree of the bridge deck 14 is greater. When the value of the vertical height difference h tends to the height difference between the bridge deck 14 and the reflective panel 15 in the unpressurized state, it indicates that the deformation degree of the bridge deck 14 is small.
[0040] As a preferred implementation scheme in this embodiment, the hanger 13 includes a screw 131, a locking nut 132 and a butterfly nut 133. One end of the screw 131 is assembled in a screw hole provided on the bracket 12 through the locking nut 132 and the butterfly nut 133, and the other end of the screw 131 is assembled on the bridge deck 14 through the locking nut 132 and the butterfly nut 133.
[0041] In this embodiment, the hanger 13 can be arranged perpendicular to the bridge deck 14 or connected to the bridge deck 14 at an angle. In the inclined state, it simulates a cable-stayed bridge structure, while perpendicular to the bridge deck 14 is a conventional design to provide vertical tension.
[0042] When displaying the bridge structure, Figure 7 The bridge deck 14 and the bracket 12 are connected by using different numbers of hangers 13.
[0043] As a preferred implementation in this embodiment, a universal wheel 24 is also provided on the chassis 21, and the universal wheel 24 is located on the end surface of the chassis 21 where the guide wheel 27 is provided. Here, the universal wheel 24 is a ball-bearing universal wheel. When the universal wheel 24 and the driving wheel 23 are located on a horizontal plane, the universal wheel 24 and the driving wheel 23 are in contact with and connected to the horizontal plane at the same time. The universal wheel 24 serves as an auxiliary wheel to maintain the distance between the chassis 21 and the bridge deck 14. The number of the universal wheels 24 can be one group to form a rear three-point structure, or two groups to form a four-wheel vehicle structure.
[0044] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.
[0045] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.
Claims
1. A bridge structure demonstration model, characterized in that: include: A bridge body (1), the bridge body (1) comprising a frame (11) and a bracket (12); the bracket (12) is erected above the frame (11); A bridge deck (14), wherein both ends of the bridge deck (14) are detachably fixedly connected to the frame (11), the bridge deck (14) is located below the bracket (12), and a plurality of groups of suspension rods (13) are provided between the bridge deck (14) and the bracket (12); A measuring trolley (2), the measuring trolley (2) comprising a chassis (21), a driving mechanism and a guide wheel (27); the driving mechanism is assembled on the chassis (21), and the guide wheel (27) slides in a guide groove (141) provided on the surface of a bridge deck (14); under the limiting action of the guide wheel (27), the driving mechanism drives the measuring trolley (2) to perform linear motion along the bridge deck (14).
2. The bridge structure demonstration model according to claim 1, characterized in that: The driving mechanism in the measuring trolley (2) comprises a double-axis motor (22) and a driving wheel (23), wherein the double-axis motor (22) is arranged on the chassis (21), and the driving wheel (23) is arranged on both sides of the double-axis motor (22) and is in contact with and connected to the bridge deck (14); The guide wheels (27) are arranged on the end surface of the chassis (21) away from the bracket (12), and the number of the guide wheels (27) is at least two groups.
3. The bridge structure demonstration model according to claim 2, characterized in that: A shelf (26) is also provided above the chassis (21), and the shelf (26) is erected above the driving mechanism via supporting rods.
4. The bridge structure demonstration model according to claim 3, characterized in that: The suspension rod (13) comprises: a screw rod (131), a locking nut (132) and a butterfly nut (133); One end of the screw rod (131) is assembled in a screw hole provided on the bracket (12) through the cooperation of a locking nut (132) and a butterfly nut (133), and the other end of the screw rod (131) is assembled on the bridge deck (14) through the cooperation of a locking nut (132) and a butterfly nut (133).
5. The bridge structure demonstration model according to claim 4, characterized in that: The suspension rod (13) is vertically connected to the bridge deck (14).
6. The bridge structure demonstration model according to claim 4, characterized in that: The suspension rod (13) is obliquely connected to the bridge deck (14).
7. The bridge structure demonstration model according to claim 3, characterized in that: The bridge deck (14) is connected to the frame (11) via a bolt structure.
8. The bridge structure demonstration model according to claim 7, characterized in that: A reflective panel (15) is also provided below the bridge deck (14); a measuring component (25) is provided on the measuring trolley (2); the measuring component (25) corresponds to the position of the guide groove (141); laser light emitted by the measuring component (25) passes through the guide groove (141) and reaches the reflective panel (15) to obtain distance data between the measuring component (25) and the reflective panel (15).
9. The bridge structure demonstration model according to claim 8, characterized in that: A gyroscope is also fixedly mounted on the measuring component (25).
10. The bridge structure demonstration model according to claim 3, characterized in that: The chassis (21) is provided with a universal wheel (24), the universal wheel (24) is located on the end surface of the chassis (21) provided with a guide wheel (27), and the universal wheel (24) is a ball-bearing universal wheel.