Dynamic simulation demonstration model for cable-stayed bridge

Abstract

The utility model provides a dynamic simulation demonstration model for a cable-stayed bridge. The dynamic simulation demonstration model comprises a base, a transverse ruler, a cable-stayed rope, a driving motor and a force sensor, and the transverse ruler, the inclined pull rope, the driving motor and the force sensor are supported on the base. The inclined pull rope is connected to a driving motor through a pulley block; the pulley block comprises a first pulley and a second pulley; an output shaft of the driving motor is connected with a driving pulley to drive synchronous rotation. When the driving pulley rotates, the inclined pulling rope winds around the driving pulley or is released to drive the transverse ruler to swing, and changes of pulling force are measured and represented. The horizontal length direction of the transverse ruler serves as the x direction, and the rotation axes of the first pulley and the second pulley are perpendicular to the y direction and are parallel. The first pulley, the second pulley and the transverse ruler are located on the same side of the vertical rod. And the direction of the rotation axis of the driving pulley is parallel to the x axis. Therefore, in the process of dynamically simulating the change of the tension state of the stay rope of the cable-stayed bridge, the accuracy and intuition of the force measurement data of the sensor are ensured.

Description

Technical Field

[0001] This utility model relates to the field of teaching simulation instruments and equipment technology, and more specifically to a dynamic simulation demonstration model of a cable-stayed bridge. Background Technology

[0002] A cable-stayed bridge is a typical bridge structure, mainly composed of three parts: the main girder, the towers, and the stay cables. The main girder is directly connected to the towers by the stay cables to construct the bridge. The main girder is the primary structural component bearing loads such as those from vehicles, and it comes in various forms, including steel box girders and concrete box girders. The towers are crucial supporting structures of a cable-stayed bridge, typically towering at both ends or in the middle of the bridge, and are usually made of reinforced concrete or steel. The stay cables are the key components connecting the towers and the main girder; they are arranged in various ways, such as radially or harp-shaped, transferring the load of the main girder to the towers.

[0003] Currently, in teaching, research, and popular science demonstrations related to the design and construction of cable-stayed bridges, scaled-down structural models are used. These models are made from materials such as wood, plastic, and metal. For example, plastic is used to make the outer shell of the main beam and bridge towers, while a metal skeleton is used internally to enhance structural strength. High-strength steel wire or nylon rope is used for the stay cables. The cable-stayed bridge is precisely measured and scaled down according to a certain proportion, and then finely processed and fixedly assembled into a structural model using appropriate materials. This model realistically and intuitively demonstrates the actual structural method and form of cable-stayed bridges, including the overall appearance, structural details, and connection relationships between various parts. It helps to provide a clearer understanding of the spatial form and construction of cable-stayed bridges. However, bonded and fixed structures cannot be dynamically simulated and demonstrated. For example, it is impossible to dynamically demonstrate changes in the main beam of the bridge or dynamic loads. Therefore, there are still certain limitations in dynamically demonstrating the principles and mechanical properties of cable-stayed bridges. Utility Model Content

[0004] In view of the defects and deficiencies of the existing technology, the purpose of this utility model is to provide a dynamic simulation demonstration model of a cable-stayed bridge, including a base, a horizontal ruler, cable stays, a drive motor, and a force sensor.

[0005] An upwardly extending upright is fixed to the upper surface of the base;

[0006] One end of the horizontal ruler is rotatably mounted to the upright. The horizontal ruler is equipped with a first hook, which is connected to the end of the inclined rope and can be pulled by the inclined rope, so that the horizontal ruler can swing around its mounting position in space.

[0007] The inclined rope is configured to be connected to the output end of the drive motor via a pulley system, the pulley system including a first pulley located at the top of the pole and a second pulley located at the bottom of the pole.

[0008] The output shaft of the drive motor is connected to a drive pulley, and the rotational motion of the drive motor drives the drive pulley to rotate synchronously.

[0009] The inclined cable extends from the first hook, passes around the first pulley and the second pulley in sequence, and then extends further to the drive pulley. It can wrap around or release the drive pulley when the drive pulley rotates clockwise or counterclockwise.

[0010] The second pulley is also connected to a force sensor, which is used to detect the force on the second pulley in real time to characterize the tension of the cable, so as to dynamically simulate the change of tension state of the cable under the influence of the weight of the crossbar.

[0011] Wherein, the longitudinal direction of the horizontal ruler installed on the upright and in a horizontal state is taken as the x direction, the direction of the rotation axis of the first pulley is the y direction perpendicular to the x direction, and the direction of the rotation axis of the second pulley is the y direction perpendicular to the x direction.

[0012] The rotation axis of the first pulley is parallel to the rotation axis of the second pulley, and the first pulley, the second pulley and the horizontal ruler are located on the same side of the upright;

[0013] The axis of rotation of the drive pulley is parallel to the x-axis.

[0014] As an optional embodiment, the distance d1 between the first pulley and the center line of the pole along the x-direction and the distance d2 between the second pulley and the center line of the pole along the x-direction satisfy: d1 = d2.

[0015] As an optional embodiment, the distance d3 between the first pulley and the center line of the pole along the y direction and the distance d4 between the second pulley 420 and the center line of the pole along the y direction satisfy: d3 = d4.

[0016] As an optional embodiment, the angled pull rope is located in the same plane from the fixed connection point of the first hook, the position around the first pulley, and the position around the second pulley.

[0017] As an optional embodiment, the tangents of the inclined ropes in the direction of entering and exiting the second pulley are parallel to each other.

[0018] As an optional embodiment, based on the rotation axis of the drive pulley and the rotation axis of the second pulley, the tangent at the connection point of the inclined rope and the drive pulley is kept in a straight line with the tangent at the position where the inclined rope passes around the second pulley and enters the drive pulley.

[0019] As an optional embodiment, the beginning of the guy rope is fixed to the drive pulley and wound or released around its rotation direction relative to the end of the guy rope.

[0020] As an optional embodiment, the drive motor is mounted on the upright via a motor mounting bracket and is located below the installation position of the horizontal ruler;

[0021] Relative to the installation position of the horizontal ruler, the second pulley is located on the same side as the drive motor and is located below the horizontal ruler; the first pulley is located above the horizontal ruler.

[0022] As an optional embodiment, the upper surface of the ruler is formed with a first groove that runs along the longitudinal length of the ruler, and the first hook is adapted to be installed in the first groove; the first hook is able to slide in the first groove.

[0023] As an optional embodiment, the horizontal ruler is provided with at least one level bubble to indicate the horizontal state of the horizontal ruler and to characterize whether the horizontal ruler is in a horizontal state during the dynamic simulation of the horizontal ruler's swing motion.

[0024] As an optional embodiment, the surface of the ruler is also provided with scale lines and scale values ​​for visually representing the movement position of the first hook.

[0025] As an optional embodiment, when the drive pulley rotates and the inclined rope is tightened, the inclined rope is pulled to pass around the first pulley and the second pulley in sequence and wrap around the drive pulley, and the horizontal ruler is pulled to swing in the lifting direction.

[0026] As an optional embodiment, when the drive pulley rotates and the inclined rope is released, the inclined rope wound on the drive pulley passes around the second pulley and the first pulley in sequence and is released towards the first hook on the horizontal ruler, thereby causing the horizontal ruler to swing in the downward direction.

[0027] As an optional embodiment, the dynamic simulation demonstration model of the cable-stayed bridge is also equipped with a control system connected to the drive motor for controlling the operation of the drive motor.

[0028] As an optional embodiment, the dynamic simulation demonstration model of the cable-stayed bridge is also equipped with a display device that communicates with the force sensor data to display the measured force data and / or force changes.

[0029] It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below may be considered part of the utility model subject matter of this disclosure, provided that such concepts do not contradict each other. Furthermore, all combinations of the claimed subject matter are considered part of the utility model subject matter of this disclosure.

[0030] The foregoing and other aspects, embodiments, and features of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as features and / or beneficial effects of exemplary embodiments, will become apparent from the following description or may be learned through practice of specific embodiments according to the teachings of the present invention. Attached Figure Description

[0031] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings.

[0032] Figure 1 This is a three-dimensional view of a dynamic simulation demonstration model of a cable-stayed bridge according to an embodiment of this utility model.

[0033] Figure 2 This is a three-dimensional view of the dynamic simulation demonstration model of the cable-stayed bridge according to an embodiment of the present utility model.

[0034] Figure 3 This is a three-dimensional view of the horizontal ruler of the dynamic simulation demonstration model of the cable-stayed bridge according to an embodiment of this utility model.

[0035] Figure 4 This is a schematic diagram of the horizontal ruler installation structure of the dynamic simulation demonstration model of the cable-stayed bridge according to an embodiment of the present invention.

[0036] Figure 5 This is a front view of the dynamic simulation demonstration model of the cable-stayed bridge according to an embodiment of the present invention (control system 1000 is not identified).

[0037] Figure 6 This is a schematic diagram of the dynamic changes in the cable-stayed bridge position of the dynamic simulation demonstration model according to an embodiment of the present invention (control system 1000 is not identified).

[0038] Figure 7 This is an assembly diagram of the dynamic simulation demonstration model of a cable-stayed bridge according to an embodiment of the present invention (control system 1000 is not identified).

[0039] Figure 8 It is based on Figure 7 The example shows a magnified view of location A in the dynamic simulation demonstration model of the cable-stayed bridge.

[0040] Figure 9 This is an assembly diagram of the clamping mechanism of the dynamic simulation demonstration model of the cable-stayed bridge according to an embodiment of the present invention (control system 1000 is not identified).

[0041] Figure 10 It is based on Figure 9 The example shows a magnified view of position B in the dynamic simulation demonstration model of the cable-stayed bridge.

[0042] Figure 11 It is based on Figure 9 The example shows a magnified view of position C in the dynamic simulation demonstration model of the cable-stayed bridge. Detailed Implementation

[0043] To better understand the technical content of this utility model, specific embodiments are provided below in conjunction with the accompanying drawings.

[0044] Various aspects of the present invention are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments disclosed herein are not necessarily intended to include all aspects of the present invention. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed herein are not limited to any particular implementation. Furthermore, some aspects of the present invention can be used alone or in any suitable combination with other aspects disclosed herein.

[0045] {Example 1}

[0046] Combination Figures 1 to 11 As shown, the cable-stayed bridge simulation demonstration model according to an embodiment of the present invention includes a base 100, a horizontal ruler 200, a cable stay rope 300, a drive motor 400, a force sensor 500, and a control system 1000.

[0047] The base 100 serves as the bottom support mechanism, used to support the entire cable-stayed bridge simulation demonstration model. As shown in the figure, the horizontal ruler 200, cable stays 300, drive motor 400, and force sensor 500 are supported on the base 100.

[0048] An upwardly extending upright post 110 is fixed to the upper surface of the base 100.

[0049] One end of the horizontal ruler 200 is rotatably mounted to the vertical pole 110.

[0050] Combination Figure 1 , Figure 2 As shown, a first hook 220 is provided on the horizontal ruler. The first hook 220 is connected to the end of the inclined rope 300 and can be pulled by the inclined rope 300, so that the horizontal ruler 200 swings around its installation position in space.

[0051] Combination Figure 1The inclined cable 300 is designed to be connected to the output end of the drive motor 400 via a pulley system. The pulley system includes a first pulley 410 located at the top of the upright 110 and a second pulley 420 located at the bottom of the upright 110.

[0052] The drive motor 400 is mounted on the upright 110 via the motor mounting bracket 401 and is located below the mounting position of the crossbar 200.

[0053] Referring to the diagram, relative to the installation position of the horizontal ruler 200, the second pulley 420 and the drive motor 400 are located on the same side, below the horizontal ruler 200; the first pulley 410 is located above the horizontal ruler 200.

[0054] like Figure 2 , Figure 7 , Figure 8 As shown, the motor mounting bracket 401 is fixedly connected to a fixing block 402. The fixing block 402 is fitted onto the upright 110 and tightened with bolts to fix its position.

[0055] The output shaft of the drive motor 400 is connected to a drive pulley 430, and when the drive motor 400 rotates, it can drive the drive pulley 430 to rotate synchronously.

[0056] Combination Figure 2 , Figure 7 , Figure 8 As shown, in the vertical direction along the upright 110, the drive pulley 430 is closer to the horizontal ruler 200 than the second pulley 420. That is, the drive pulley 430 is located in the vertical direction between the second pulley 420 and the horizontal ruler 200.

[0057] Combination Figure 1 , Figure 2 , Figure 7 As shown, the end of the diagonal rope 300 is connected to the horizontal ruler 200, specifically by fastening the diagonal rope with a first hook provided on the horizontal ruler 200.

[0058] Combination Figure 1 , Figure 3 , Figure 4 The upper surface of the horizontal ruler 200 has a first groove 210 that runs along the longitudinal length of the horizontal ruler. A first hook 220 that can slide is fitted into the first groove 210. The end of the aforementioned diagonal rope 300 is fastened to the first hook 220 to form a fixed connection.

[0059] Combination Figure 1 , Figure 2 , Figure 7 , Figure 8As shown, the inclined rope 300 extends from the first hook 220, passes through the first pulley 410 and the second pulley 420 in sequence, and then extends upward to the drive pulley 430. It can wrap around or release the drive pulley 430 when the drive pulley 430 rotates clockwise or counterclockwise.

[0060] In a further alternative embodiment, the head end of the inclined rope 300 is fixed to the drive pulley 430 and wound or released around its rotation direction relative to the end of the inclined rope 300.

[0061] Combination Figure 1 , Figure 2 , Figure 8 As shown, when the drive pulley 430 rotates and the inclined rope 300 is tightened, the inclined rope 300 is pulled to pass through the first pulley 410 and the second pulley 420 in sequence and wrap around the drive pulley 430, pulling the horizontal ruler 200 to swing in the lifting direction.

[0062] Similarly, when the drive pulley 430 rotates, causing the inclined rope 300 to release, the inclined rope 300 wound around the drive pulley 430 successively passes over the second pulley 420 and the first pulley 410 and is released towards the first hook 200 on the horizontal ruler, thereby causing the horizontal ruler 200 to swing downwards. This dynamically simulates the change in the tension state of the inclined rope under the influence of the horizontal ruler's own weight during the swing.

[0063] In other embodiments, combined with Figure 5 , Figure 6 As shown, the first hook 220 can slide to different positions within the first groove 210, thereby simulating the change in tension state of the inclined rope under the influence of the weight of the horizontal ruler at different positions.

[0064] This enables the dynamic simulation of the horizontal ruler used to simulate the main girder of a cable-stayed bridge, simulating the cable stays' tension on the main girder and their dynamic changes.

[0065] Combination Figure 1 , Figure 3 As shown, at least one level bubble 230 is provided on the horizontal ruler 200 to indicate the horizontal state of the horizontal ruler. In the process of dynamically simulating the swing motion of the horizontal ruler, the level bubble can intuitively represent whether the horizontal ruler is in a horizontal state, which is beneficial for observation.

[0066] Combination Figure 1 , Figure 3 As shown, the surface of the ruler 200 is also provided with scale lines and scale values ​​for visualization, which makes it easy to observe the movement position of the first hook in the dynamic simulation process and facilitates torque research and calculation.

[0067] As an optional embodiment, the horizontal ruler 200 is mounted to the vertical pole 110 via a perforated fixing block 201. Combined with... Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the perforated fixing block 201 is fitted onto the upright 110. The first knob 202 passes through the horizontal ruler 200 and the side wall of the perforated fixing block 201, thereby screwing into the perforated fixing block 201 and pressing against the upright 110 to tighten it, thus fixing the position of the perforated fixing block 201 on the upright 110.

[0068] In this embodiment, the head of the first knob 202 is threaded to engage with the threaded hole on the side wall of the through-hole fixing block 201 for tightening. The waist of the first knob 202 is a smooth surface, allowing the ruler 200 to rotate freely around it.

[0069] Combination Figure 1 , Figure 2 , Figure 8 As shown, in an optional embodiment, the first pulley 410 is mounted and fixed to the top of the upright 110 via the first clamping mechanism 120. The second pulley 420 is fixedly mounted to the bottom of the upright 110 via the second clamping mechanism 130.

[0070] A force sensor 500 is also provided on the second clamping mechanism 130. It is installed below and connected to the second pulley 420, so that the force sensor 500 can detect the force on the second pulley that the inclined rope 300 passes over in real time and characterize the tension of the inclined rope. In this way, it can dynamically simulate the change of the tension state of the inclined rope under the influence of the weight of the horizontal ruler in different positions and under different conditions.

[0071] As an optional embodiment, the force data measured by the force sensor 500 can be output via wired or wireless transmission.

[0072] As an optional embodiment, the control system 1000 of the cable-stayed bridge simulation demonstration model is electrically connected to the drive motor via a control cable and is configured to control the operation of the drive motor 400, including operations such as start / stop / forward / reverse rotation.

[0073] The control system 1000 can also be configured to connect to the aforementioned force sensor 500 via a cable, receive the detected tensile force data transmitted by the force sensor 500, and visualize it through a display device, so that the force value and changes can be observed intuitively during the dynamic demonstration of the cable-stayed bridge simulation model.

[0074] As an optional embodiment, the detected tensile data can also be analyzed over time to plot a force-time curve, allowing for a direct observation of the force values ​​and trends.

[0075] As an optional embodiment, the aforementioned control system 1000 is designed to be implemented in the manner of a host computer, for example, in a computer system with data communication, data processing and display functions, including desktop computers, laptops, handheld computers, smart computing terminals, embedded computer systems, etc.

[0076] As an optional embodiment, the aforementioned control system 1000 can also be designed in the form of a control box, such as... Figure 1 , Figure 2 As shown, it is installed on the upper surface of the base 100.

[0077] Combination Figure 1 , Figure 2 As shown, the control box is equipped with at least a power input port, a signal input port, control buttons 1002, and a display device 1003. The display device 1003 can be a digital tube, LED, or LCD display to display the measured force value. The power input port is connected to an external power source to supply power to the control box. The signal input port establishes a data communication channel with the force sensor 500 via a cable or wireless transmission link, receives the sensing data from the force sensor 500, and displays the detected force value on the display device 1003.

[0078] exist Figure 2 In the example shown, the power input port and signal input port are integrated into one input port 1001, and the power cable and signal cable are threaded through one physical input port into the control box.

[0079] It should be understood that the drive motor 400 can be powered by an independent power supply circuit or by power supply through the control box.

[0080] {Example 2}

[0081] Combination Figure 2 , Figure 6 , Figure 7 , Figure 8 As shown, taking the longitudinal direction of the horizontal ruler 200 installed on the upright 200 and in a horizontal state as the x-direction, the direction of the rotation axis of the first pulley 410 is the y-direction perpendicular to the x-direction, and the direction of the rotation axis of the second pulley 420 is the y-direction perpendicular to the x-direction.

[0082] Combination Figure 8 As shown, the rotation axis of the first pulley 410 is parallel to the rotation axis of the second pulley 420, and the first pulley 410, the second pulley 420 and the horizontal ruler 200 are located on the same side of the upright 110.

[0083] Combination Figure 8 As shown, the direction of the rotation axis of the drive pulley 430 is parallel to the x-axis.

[0084] The distance d1 between the first pulley 410 and the center line of the upright 110 along the x-direction, and the distance d2 between the second pulley 420 and the center line of the upright 110 along the x-direction, satisfy: d1 = d2.

[0085] The distance d3 between the first pulley 410 and the center line of the upright 110 along the y direction, and the distance d4 between the second pulley 420 and the center line of the upright 110 along the y direction, satisfy: d3 = d4.

[0086] Therefore, the angled rope 300 is located in the same plane from the fixed connection point of the first hook, the position around the first pulley 410, and the position around the second pulley 420.

[0087] Combination Figure 8 As shown, the tangents of the inclined rope 300 in the direction of entering and exiting the second pulley are parallel to each other.

[0088] Combination Figure 2 , Figure 8 As shown, based on the rotation axis of the drive pulley 430 and the rotation axis of the second pulley 420, the tangent at the connection point of the inclined rope 300 and the drive pulley 430 is aligned with the tangent at the position where the inclined rope 300 passes around the second pulley 420 and enters the drive pulley 430.

[0089] Therefore, in the process of dynamically simulating the changes in the tension state of the stay cables of a cable-stayed bridge, the accuracy and intuitiveness of the force measurement data from the sensors are ensured.

[0090] {Example 3}

[0091] Combination Figure 1 , Figure 2 , Figure 8 , Figures 9-11 As shown, the first clamping mechanism 120 and the second clamping mechanism 130 adopt the same structural design. Combined with... Figure 10 As shown, the first clamping mechanism 120 is used as an example for illustrative purposes.

[0092] like Figure 10 In the example shown, the first clamping mechanism 120 includes a clamping body 121 sleeved onto the outer surface of the upright 110. On a pair of opposite side directions of the upright 110, the clamping body 121 is provided with a first clamping knob 123 and a second clamping knob 124 facing each other, which can be tightened and released respectively.

[0093] At least one corner anti-slip component 122 is provided between the clamping body 121 and the upright 110, such as Figure 10 As shown, the corner anti-slip component 122 is designed with an L-shaped structure and is located on one side of the second clamping knob 124, holding the upright 110.

[0094] like Figure 10 As shown, the clamping body 121 on the side where the second clamping knob 124 is located is also provided with an L-shaped anti-rotation component 125, which holds the pulley mounting shaft 126. After the second clamping knob 124 passes through the pulley mounting shaft 126 and the L-shaped anti-rotation component 125, it further tightens the clamping body 121 until it abuts against the corner anti-slip component 122. By tightening the first clamping knob 123 and the second clamping knob 124 on both sides, clamping and fixing are achieved.

[0095] As shown in the figure, the first pulley 410 is installed at the end of the pulley mounting shaft 126 of the first clamping mechanism 120.

[0096] like Figure 11 As shown, the end of the pulley mounting shaft 126 of the second clamping mechanism 130 is set horizontally to securely mount the force sensor 500. A vertical mounting shaft is mounted above the force sensor 500, and the second pulley 420 is mounted at the end of the vertical mounting shaft.

[0097] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A dynamic simulation demonstration model for a cable-stayed bridge, characterized in that, Includes a base, a horizontal ruler, a diagonal rope, a drive motor, and a force sensor; An upwardly extending upright is fixed to the upper surface of the base; One end of the horizontal ruler is rotatably mounted to the upright. The horizontal ruler is equipped with a first hook, which is connected to the end of the inclined rope and can be pulled by the inclined rope, so that the horizontal ruler can swing around its mounting position in space. The inclined rope is configured to be connected to the output end of the drive motor via a pulley system, the pulley system including a first pulley located at the top of the pole and a second pulley located at the bottom of the pole. The output shaft of the drive motor is connected to a drive pulley, and the rotational motion of the drive motor drives the drive pulley to rotate synchronously. The inclined cable extends from the first hook, passes around the first pulley and the second pulley in sequence, and then extends further to the drive pulley. It can wrap around or release the drive pulley when the drive pulley rotates clockwise or counterclockwise. The second pulley is also connected to a force sensor, which is used to detect the force on the second pulley in real time to characterize the tension of the cable, so as to dynamically simulate the change of tension state of the cable under the influence of the weight of the crossbar. Wherein, the longitudinal direction of the horizontal ruler installed on the upright and in a horizontal state is taken as the x direction, the direction of the rotation axis of the first pulley is the y direction perpendicular to the x direction, and the direction of the rotation axis of the second pulley is the y direction perpendicular to the x direction. The rotation axis of the first pulley is parallel to the rotation axis of the second pulley, and the first pulley, the second pulley and the horizontal ruler are located on the same side of the upright; The axis of rotation of the drive pulley is parallel to the x-axis.

2. The dynamic simulation demonstration model of the cable-stayed bridge according to claim 1, characterized in that, The distance d1 between the first pulley and the center line of the pole along the x-direction, and the distance d2 between the second pulley and the center line of the pole along the x-direction, satisfy: d1 = d2.

3. The dynamic simulation demonstration model of the cable-stayed bridge according to claim 1, characterized in that, The distances d3 between the first pulley and the center line of the pole along the y-direction, and d4 between the second pulley and the center line of the pole along the y-direction, satisfy: d3 = d4.

4. The dynamic simulation demonstration model of a cable-stayed bridge according to any one of claims 1-3, characterized in that, The angled rope is located in the same plane from the fixed connection point of the first hook, the position where it passes the first pulley, and the position where it passes the second pulley.

5. The dynamic simulation demonstration model of the cable-stayed bridge according to claim 1, characterized in that, The tangents of the inclined ropes in the direction of entering and exiting the second pulley are parallel to each other.

6. The dynamic simulation demonstration model of the cable-stayed bridge according to claim 1, characterized in that, Based on the rotation axis of the drive pulley and the rotation axis of the second pulley, the tangent at the connection point of the inclined rope and the drive pulley is aligned with the tangent at the point where the inclined rope passes around the second pulley and enters the drive pulley.

7. The dynamic simulation demonstration model of the cable-stayed bridge according to claim 1, characterized in that, Relative to the end of the inclined rope, the beginning of the inclined rope is fixed to the drive pulley and wound or released around its rotation direction.

8. The dynamic simulation demonstration model of the cable-stayed bridge according to claim 1, characterized in that, The drive motor is mounted on the upright via a motor mounting bracket and is located below the installation position of the horizontal ruler; Relative to the installation position of the horizontal ruler, the second pulley is located on the same side as the drive motor and is located below the horizontal ruler; the first pulley is located above the horizontal ruler.

9. The dynamic simulation demonstration model of the cable-stayed bridge according to claim 1, characterized in that, The upper surface of the ruler has a first groove that runs along the longitudinal length of the ruler. The first hook is fitted into the first groove. The first hook can slide within the first groove.

10. The dynamic simulation demonstration model of the cable-stayed bridge according to claim 1, characterized in that, The horizontal ruler is equipped with at least one level bubble to indicate the horizontal state of the horizontal ruler and to characterize whether the horizontal ruler is in a horizontal state during the dynamic simulation of the horizontal ruler's swing motion.

11. The dynamic simulation demonstration model of the cable-stayed bridge according to claim 1, characterized in that, The surface of the ruler is also provided with scale lines and scale values, which are used to visually represent the movement position of the first hook.

12. The dynamic simulation demonstration model of a cable-stayed bridge according to any one of claims 1-11, characterized in that, When the drive pulley rotates and the inclined rope is tightened, the inclined rope is pulled to pass through the first pulley and the second pulley in sequence and then wrap around the drive pulley, pulling the horizontal ruler to swing in the lifting direction.

13. The dynamic simulation demonstration model of a cable-stayed bridge according to any one of claims 1-11, characterized in that, When the drive pulley rotates and the inclined rope is released, the inclined rope wound on the drive pulley passes through the second pulley and the first pulley in sequence and is released towards the first hook on the horizontal ruler, thereby causing the horizontal ruler to swing in a downward direction.

14. The dynamic simulation demonstration model of a cable-stayed bridge according to any one of claims 1-11, characterized in that, The dynamic simulation demonstration model of the cable-stayed bridge is also equipped with a control system connected to the drive motor to control the operation of the drive motor.

15. The dynamic simulation demonstration model of a cable-stayed bridge according to any one of claims 1-11, characterized in that, The dynamic simulation demonstration model of the cable-stayed bridge is also equipped with a display device that communicates with the force sensor data to display the measured force data and / or force changes.

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