Suspension bridge model

Abstract

The utility model provides a suspension bridge model, particularly relates to the technical field of road bridge design, and comprises a concave base, two bridge towers are arranged on the base, each bridge tower is composed of two cross beams and two stand columns, and the top end of the lower cross beam and the top end of the base are located on the same straight line. The two tops of the base are each provided with two first supporting assemblies used for supporting the edges of the bottoms of the bridge floors, the tops of the lower cross beams are provided with second supporting assemblies used for supporting the two sides of the connecting positions of the bridge floors, the number of the bridge floors is three, and inner grooves used for containing pulley assemblies are formed in the tops of the stand columns. Fixing base bodies are arranged on the two sides of the top of the base, the model is composed of the base, a bridge tower, a pulley assembly, a supporting assembly, an adjusting assembly, a main cable and a hanging ring assembly, the suspension bridge can be restored in a high mode, and when a user conducts data testing through the model with the high restoration degree, obtained data are comprehensive in data type and high in reliability. And the data accuracy is relatively high.

Description

Technical Field

[0001] The utility model relates to the technical field of road bridge design, in particular to a suspension bridge model. Background Art

[0002] A suspension bridge, also known as a suspension bridge, is a bridge that uses cables (or steel chains) suspended from towers and anchored on both banks (or both ends of the bridge) as the main load-bearing components of the upper structure. The geometric shape of the cables is determined by the balance of forces and is generally close to a parabola. Many hangers are hung from the cables to suspend the bridge deck. Stiffening beams are often set between the bridge deck and the hangers to form a combined system with the cables to reduce the deflection caused by the load.

[0003] However, the long-span suspension bridge has a complex structure, and its nonlinear characteristics and local stress problems are more obvious. Model tests are needed to analyze its various mechanical characteristics during construction and operation, and verify the theoretical analysis and numerical calculation results. Therefore, when engineers build road bridges, they usually display the main structural plane of the bridge on the drawings, and then use proportional parts to assemble and form a bridge model, and then conduct dynamic and static load simulation experiments or other experiments on the bridge model;

[0004] Existing patents such as patent publication number CN105865821A disclose an assembled double-tower anchor suspension bridge model test system. In the suspension bridge model disclosed in the patent, the main cable is anchored in a groove or a steel structure base or bottom plate on the ground, which is not convenient for movement and assembly; and a track-type vehicle operation mode is adopted, and the range of bridge deck loads that can be tested is limited. Of course, there are also bridge decks installed between the bridge decks and on the base. In this installation mode, when the bridge deck is deformed, the model itself is very easy to be damaged; at the same time, the lengths of the main cables and the hangers are fixed, which is not convenient for users to adjust and install the main cables and the hangers; for example, when the bridge deck is an integral body, the bridge deck will be slightly deformed due to the influence of the ambient temperature. The bridge deck is an integral body, which is compressed when it is heated and tensile when it is cold. As the bridge deck deforms, the data tested by the user through the bridge deck will become inaccurate due to the change in the force on the bridge deck. When the bridge deck is divided into multiple parts, the adjacent two bridge decks will squeeze each other when the bridge deck is heated. In this case, the force on the bridge deck itself will also be changed.

[0005] Therefore, it is necessary to design a suspension bridge model that adopts a bridge deck and has the functions of supporting the deformation of the bridge deck and adjusting the length of the hanger rod and the main cable. Utility Model Content

[0006] In order to solve the above problems, the utility model proposes a suspension bridge model to more accurately solve the above problems.

[0007] The utility model is realized by the following technical solutions:

[0008] The utility model proposes a suspension bridge model, comprising a concave base, two bridge towers are arranged on the base, the bridge towers are composed of two cross beams and two columns, the top of the lower cross beam is in the same straight line with the top of the base, two first support components for supporting the bottom edge of the bridge deck are arranged on the two tops of the base, the top of the lower cross beam is arranged with a second support component for supporting both sides of the bridge deck connection, the bridge deck is provided with three, the top of the column is provided with a groove for placing the pulley assembly, the top of the base and the two first support components are arranged on the top of the base. Fixed seat bodies are provided on both sides of the support assembly, and a main cable is connected to the fixed seat body through a first adjusting assembly. The other end of the main cable passes around the two pulley assemblies in sequence and is connected to another first adjusting assembly. The first adjusting assembly is connected to the fixed seat body. The main cable is arranged in an arc between the two bridge towers. A plurality of lifting ring assemblies for connecting the bridge deck and the main cable are arranged on the main cable. An expansion joint is left between the two bridge decks, and the bottom of the bridge deck is arranged in a manner that the middle part is low and the two sides are high. Approach bridges are provided on both sides of the base, and an experimental trolley is placed on one of the approach bridges.

[0009] The utility model further provides that the pulley assembly includes a sliding body, placement grooves provided on both sides of the sliding body and used to place bearings, and fixing columns sequentially passing through the sliding body, the placement grooves and the bearings.

[0010] Further, the utility model, the groove includes a first groove body for placing the sliding body and a second groove body located above the first groove body and used to fix the two ends of the fixed column. After the sliding body is installed, a certain gap remains between the two sides of the sliding body and the inner wall of the first groove body.

[0011] The utility model further provides that the lifting ring assembly comprises a locking clamp connected to the main cable, the locking clamp is connected to a lifting cable below via a second adjusting assembly, the bottom of the lifting cable is connected to a connecting head, and the connecting head is hinged below a fixing head which is threadedly connected to the middle bridge deck.

[0012] The utility model further provides that the first adjustment component includes a first hinged head, a first rotating part rotatably connected to the first hinged head, and a first adjustment threaded column arranged at the top end of the first rotating part, the first adjustment threaded column is cooperated with a first column body outside, the first column body is provided with a first internal thread matching with the first adjustment threaded column inside, the first column body is provided with a first connecting inner hole located above the first internal thread, and the first connecting inner hole is connected to the main cable.

[0013] The utility model further provides that the second adjustment component includes a second hinged head, a second rotating part is rotatably provided on the second hinged head, a second adjustment threaded column is provided at the top end of the second rotating part, a second column is cooperated with the outside of the second adjustment threaded column, a second internal thread is provided inside the second column, a second connecting inner hole is provided inside the second column and on a side away from the rotating part, and the second connecting inner hole is connected to the suspension cable.

[0014] Further, the utility model provides that the two first support assemblies and the two second support assemblies on the same side form a group, the first support assembly includes a first fixed hinge support and a first adjustable hinge support, and the second support assembly includes a second adjustable hinge support and a third adjustable hinge support.

[0015] Further, the utility model comprises: the first fixed hinge support comprises a first seat body, a first connecting seat hinged to the first seat body, and a first supporting seat arranged on the top of the first connecting seat; the first adjustable hinge support comprises a second seat body, a second connecting seat hinged to the second seat body, a first adjusting groove opened on the second connecting seat, and a second supporting seat matching with the first adjusting groove.

[0016] The utility model further provides that the second adjustment hinge support includes a third seat body, two third connecting seats hinged to the third seat body, and a second adjustment groove opened on the third connecting seat, the second adjustment groove is matched with a second adjustment block, the top of the second adjustment block is provided with a third adjustment groove perpendicular to the direction of the second adjustment groove, and the third adjustment groove is matched with a third support seat; the third adjustment hinge support includes a fourth seat body, two fourth connecting seats hinged to the fourth seat body, a fourth adjustment groove opened on the fourth connecting seat, and a fourth support seat matched with the fourth adjustment groove.

[0017] Furthermore, the base of the utility model is assembled from standard aluminum profiles.

[0018] Beneficial effects of the utility model:

[0019] The model consists of a base, a bridge tower, a pulley assembly, a support assembly, an adjustment assembly, a main cable and a ring assembly, and can restore the suspension bridge to a high degree. When users use this highly restored model for data testing, the data obtained is not only comprehensive in data type, but also highly accurate.

[0020] The setting of the approach bridge can be used to place the experimental vehicle before the experiment, which can avoid applying load to the monitored part of the bridge model before the experiment starts; the design of the approach bridge solves the problem of misloading that may be caused during the experimental preparation stage, ensures the preparation work before the experiment starts, and avoids applying unexpected loads to the bridge model;

[0021] The arrangement of the bridge tower, pulley assembly, adjustment assembly, main cable and lifting ring assembly, wherein the pulley assembly, adjustment assembly and lifting ring assembly cooperate with each other to realize the main cable length adjustment work and the arc size adjustment work. The significance of adjusting the main cable length and arc is that it not only makes it convenient for users to install the main cable, but also makes it convenient for installers to adjust the shapes of the two main cables.

[0022] Three bridge decks and two expansion joints are used. The expansion joints can reserve deformable space for each bridge deck. The bridge deck can be used for the movement of the experimental vehicle and load can be applied to the bridge deck. After the load is applied, the bridge deck will deform. At the same time, the existence of the bridge deck can not only enable the staff to obtain more experimental data through the model, but also more comprehensively reflect the mechanical response of the bridge deck when the load is applied. At the same time, the bridge deck design provides a wider range of experimental data collection points, which can more accurately reflect the mechanical response of the bridge during the loading process, thereby improving the restoration and accuracy of the experimental results.

[0023] At the same time, the existence of expansion joints can also prevent the bridge deck from being damaged by the external environment during placement. In addition, in a hotter or colder external environment, the bridge deck will deform due to the principle of thermal expansion and contraction, and the existence of expansion joints can provide space for the deformation of the bridge deck. At the same time, the setting of four hinged supports can prevent the bridge deck from being affected by bending moment when it is loaded and bent, so that the bridge deck is only constrained by vertical displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the first support assembly, the second support assembly and the approach bridge position in the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the bridge tower in the utility model;

[0027] Figure 4 This is a schematic diagram of the cross-sectional structure of the groove position in the utility model;

[0028] Figure 5 This is a schematic diagram of the connection structure between the first adjustment component and the fixing seat in the utility model;

[0029] Figure 6 It is a schematic diagram of the cross-sectional structure of the first adjustment component in the utility model;

[0030] Figure 7 It is a schematic diagram of the structure of the lifting ring assembly in the utility model;

[0031] Figure 8 This is a schematic diagram of the structure of the second adjustment component in the utility model;

[0032] Fig. 9 It is a schematic diagram of the cross-sectional structure of the second adjustment component in the utility model;

[0033] Fig.10 It is a schematic diagram of the position design structure of the first supporting assembly and the second supporting assembly in the utility model;

[0034] Fig.11 This is a schematic diagram of the structure of the first fixed hinge support in the utility model;

[0035] Fig.12 This is a schematic diagram of the structure of the first adjustment hinge support in the utility model;

[0036] Fig.13 This is a schematic diagram of the structure of the second adjustment hinge support in the utility model;

[0037] Fig.14 This is a schematic diagram of the structure of the third adjustment hinge support in the utility model;

[0038] Fig.15 It is a schematic structural diagram of the first rotating part in the utility model.

[0039] In the figure, 1, base; 11, fixed seat; 12, approach bridge; 2, bridge tower; 21, groove; 211, first slot body; 212, second slot body; 3, first support assembly; 31, first fixed hinge support; 311, first seat body; 312, first connecting seat; 313, first support seat; 32, first adjustable hinge support; 321, second seat body; 322, second connecting seat; 323, first adjustable slot; 324, second support seat; 4, second support assembly; 41, second adjustable hinge support; 411, third seat body; 412, third connecting seat; 413, second adjustable slot; 414, second adjustable block; 415, third adjustable slot; 416, third support seat; 42, third adjustable hinge support; 421, fourth seat body; 422, fourth connecting seat; 423 , the fourth adjustment slot; 424, the fourth support seat; 5, the pulley assembly; 51, the sliding body; 52, the placement slot; 53, the bearing; 54, the fixed column; 6, the first adjustment assembly; 61, the first hinge head; 62, the first rotating part; 621, the connecting body; 622, the annular body; 623, the gasket; 63, the first adjustment threaded column; 64, the first column; 65, the first inner screw hole; 66, the first connecting inner hole; 8, the main cable; 8, the lifting ring assembly; 81, the locking clamp; 82, the second adjustment assembly; 821, the second hinge head; 822, the second rotating part; 823, the second adjustment threaded column; 824, the second column; 825, the second inner screw hole; 826, the second connecting inner hole; 83, the lifting cable; 84, the connecting head; 85, the fixed head; 9, the bridge deck; 91, the expansion joint. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be combined with the technical solution in the embodiments of the utility model for a clear and complete description. Obviously, the described embodiments are partial embodiments of the utility model, not all 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 utility model.

[0041] Example

[0042] refer to Figure 1-15A suspension bridge model comprises a concave base 1, on which two bridge towers 2 are arranged, and the bridge tower 2 is composed of two cross beams and two columns, and the top of the lower cross beam is in the same straight line as the top of the base 1, and two first support components 3 for supporting the bottom edge of the bridge deck 9 are arranged on the two tops of the base 1, and the top of the lower cross beam is provided with a second support component 4 for supporting both sides of the bridge deck 9 connection, and the bridge deck 9 is provided with three, and the top of the column is provided with a groove for placing the pulley assembly 5, and the top of the base 1 and on both sides of the two first support components 3 are provided with a fixing seat 11 body, the fixed seat body 11 is connected with a main cable 8 through a first adjustment component 6, the other end of the main cable 8 is passed through two pulley components 5 in sequence, and is connected with another first adjustment component 6, the first adjustment component 6 is connected to the fixed seat body 11, the main cable 8 is arranged in an arc between the two bridge towers 2, a plurality of lifting ring components 8 for connecting the bridge deck 9 and the main cable 8 are arranged on the main cable 8, an expansion joint 91 is reserved between the two bridge decks 9, and the bottom of the bridge deck 9 adopts a setting mode of low in the middle and high on both sides, approach bridges 12 are arranged on both sides of the base 1, and an experimental trolley (not shown in the figure) is placed on one of the approach bridges 12;

[0043] The model consists of a base 1, a bridge tower 2, a pulley assembly 5, a support assembly, an adjustment assembly, a main cable 8 and a suspension ring assembly 8, and can restore the suspension bridge to a high degree. When the user uses the model with a high degree of restoration to perform data testing, the data obtained is not only comprehensive in data type, but also highly accurate.

[0044] The setting of the approach bridge 12 can be used to place the experimental vehicle before the experiment, which can avoid applying load to the monitored part of the bridge model before the experiment starts; the design of the approach bridge 12 solves the problem of misloading that may be caused in the experimental preparation stage, ensures the preparation work before the experiment starts, and avoids applying unexpected loads to the bridge model;

[0045] The bridge tower 2, the pulley assembly 5, the adjustment assembly, the main cable 8 and the lifting ring assembly 8 are arranged, wherein the pulley assembly, the adjustment assembly and the lifting ring assembly 8 cooperate to realize the length adjustment work and the arc size adjustment work of the main cable 8, and the significance of adjusting the length and arc of the main cable 8 is that it is convenient for users to install the main cable 8;

[0046] Three bridge decks 9 and two expansion joints 91 are used, wherein the expansion joints 91 can reserve a deformable space for each bridge deck 9; the bridge deck 9 can be used for the movement of the experimental vehicle and load can be applied to the bridge deck 9, and the bridge deck 9 after the load is applied will deform; at the same time, the existence of the bridge deck 9 can not only enable the staff to obtain more experimental data through the model, but also more comprehensively reflect the mechanical response of the bridge deck 9 when the load is applied; at the same time, the design of the bridge deck 9 provides a wider range of experimental data collection points, which can more accurately reflect the mechanical response of the bridge during the loading process, thereby improving the restoration and accuracy of the experimental results;

[0047] At the same time, the existence of the expansion joint 91 can also prevent the bridge deck 9 from being damaged by the external environment during the placement process. In addition, in a hotter or colder external environment, the bridge deck 9 will deform due to the principle of thermal expansion and contraction. The existence of the expansion joint 91 can provide a basis for the deformation of the bridge deck 9 and play a role in protecting the bridge deck 9. In the process of deformation of the bridge deck 9, the three adjustable hinge supports will extend to the left or right with the movement of the bridge deck 9, so that the bridge deck 9 is only constrained by the vertical displacement and the bridge deck 9 is prevented from being affected by the bending moment when it is loaded and bent.

[0048] Preferably, reference Figure 3 and Figure 4 The pulley assembly 5 includes a sliding body 51, a placement groove 52 opened on both sides of the sliding body 51 and used to place the bearing 53, and a fixing column 54 that sequentially passes through the sliding body 51, the placement groove 52 and the bearing 53. The groove 21 includes a first groove body 211 for placing the sliding body 51 and a second groove body 212 located above the first groove body 211 and used to fix the two ends of the fixing column 54. After the sliding body 51 is installed, a certain gap is left between the two sides of the sliding body 51 and the inner wall of the first groove body 211;

[0049] The setting of the fixing column 54 can pass through the bearing 53 and fix the bearing 53, wherein the bearing 53 is divided into an inner ring and an outer ring, and the bearing 53 fixed by the fixing column 54 is the inner ring, and the setting of the second groove body 212 can fix both ends of the fixing column 54. The existence of the outer ring can rotate synchronously after the sliding body 51 is rotated by force, thereby realizing the length adjustment of the main cable 8; Figure 4 , for fixing the fixing column 54, a nut can be used to fix the height column;

[0050] After the sliding body 51 is installed, a certain gap is left between the two sides of the sliding body 51 and the inner wall of the first groove body 211, and the existence of the gap can provide a basis for the rotation of the sliding body 51;

[0051] In this embodiment, the bearing 53 is a ball bearing 53;

[0052] In this embodiment, the two sides of the connection of the bridge deck 9 refer to the two sides of the expansion joint 91.

[0053] Preferably, reference Figure 7 The eye assembly 8 comprises a locking clamp 81 connected to the main cable 8, the lower part of the locking clamp 81 is connected to a suspension cable 83 through a second adjusting assembly 82, the lower part of the suspension cable 83 is connected to a connector 84, the lower part of the connector 84 is hinged with a fixing head 85 threadedly connected to the middle bridge deck 9; the setting of the eye assembly 8 can connect the main cable 8 with the middle bridge deck 9, specifically, the locking clamp 81 can be clamped and fixed on the outside of the main cable 8, the setting of the second adjusting assembly 82 can be used to adjust the length of the eye assembly 8 and fix the upper end of the suspension cable 83; the connection between the connector 84 and the fixing head 85 can fix the lower part of the suspension cable 83 and hang the middle bridge deck 9;

[0054] In this embodiment, the connection between the second adjustment component 82 and the locking clamp 81 and between the connecting head 84 and the fixing head 85 can be fixed by a pin.

[0055] Preferably, reference Figure 5 and Figure 6 The first adjusting component 6 includes a first hinged joint 61, a first rotating part 62 rotatably connected to the first hinged joint 61, and a first adjusting threaded column 63 arranged at the top of the first rotating part 62. The first adjusting threaded column 63 is matched with a first column 64 on the outside, and the first column 64 is provided with a first internal thread 65 matched with the first adjusting threaded column 63 on the inside. The first column 64 is provided with a first connecting inner hole 66 located above the first internal thread 65, and the first connecting inner hole 66 is connected to the main cable 8; the first adjusting threaded column 63 cooperates with the first internal thread 65 to realize the installation of the main cable 8 and the fixing seat 11, and the existence of the first rotating part 62 can make the first adjusting threaded column 63 rotate, and make the first adjusting threaded column 63 gradually move into the first column 64 along the first internal thread 65, and as the first adjusting threaded column 63 is engaged with the first internal thread 65, the length of the main cable 8 is adjusted, thereby realizing the adjustment of the curvature between the two bridge towers 2;

[0056] In this embodiment, four first adjustment components 6 are provided, and every two first adjustment components 6 form a group, and are respectively fixed to the two ends of the main cable 8, wherein the first adjustment components 6 provided at the two ends of the main cable 8 can facilitate the user to adjust the overall length of the main cable 8 and facilitate the user to install the main cable 8;

[0057] Optional, reference Fig.15 The first rotating part 62 includes a connecting body 621, the bottom of which passes through the bottom of the first hinge joint 61 and is connected to a concave annular body 622, in which a gasket 623 is clamped; the setting of the annular body 622 can provide a basis for the rotation of the connecting body 621, and the existence of the gasket 623 can prevent the annular body 622 and the connecting body 621 from detaching from the top of the first hinge joint 61.

[0058] The first adjusting threaded column 63 and the first internal thread 65 are provided to facilitate the user to fix the main cable 8 on the base 1 and the bridge tower 2. The first connecting inner hole 66 is provided to be connected to the end of the main cable 8, and the first internal thread 65 is provided to be connected to the first adjusting threaded column 63.

[0059] Of course, for those skilled in the art, the rotation setting of the first adjustment component 6 can also be adopted in other ways, such as Fig. 9 As shown, the first connecting inner hole 66 is communicated with the first internal thread 65, and a blocking portion is provided at the end of the main cable 8. The setting of the blocking portion can pull the main cable 8 after the column 64 is installed. When the user rotates the first column 64, the setting of the blocking portion can prevent the main cable 8 from rotating synchronously with the rotation of the first column 64; this technical solution can also achieve the same effect.

[0060] Preferably, reference Figure 8 and Fig. 9 The second adjustment component 82 includes a second hinged head 821, on which a second rotating part 822 is rotatably provided, a second adjusting threaded column 823 is provided at the top of the second rotating part 822, the second adjusting threaded column 823 is externally matched with a second column 824, a second internal thread 825 is provided in the second column 824, a second connecting inner hole 826 is provided in the second column 824 and on a side away from the second rotating part 822, and the second connecting inner hole 826 is connected to the suspension cable 83; the principle of the second adjustment component 82 is the same as the adjustment principle of the first adjustment component 6, and the second rotating part 822 has the same structure as the first rotating part 62.

[0061] Preferably, reference Figure 10-Figure 14 , the two first support assemblies 3 and the two second support assemblies 4 on the same side form a group, the first support assembly 3 includes a first fixed hinge support 31 and a first adjustable hinge support 32, and the second support assembly 4 includes a second adjustable hinge support 41 and a third adjustable hinge support;

[0062] The first fixed hinge support 31 includes a first seat body 311, a first connecting seat 312 hinged to the first seat body 311, and a first supporting seat 313 arranged on the top of the first connecting seat 312; the first adjustable hinge support 32 includes a second seat body 321, a second connecting seat 322 hinged to the second seat body 321, a first adjusting slot 323 provided on the second connecting seat 322, and a second supporting seat 324 matched with the first adjusting slot 323;

[0063] The second adjustment hinge support 41 includes a third seat body 411, and two third connecting seats 412 hinged to the third seat body 411, and a second adjustment slot 413 provided on the third connecting seat 412, the second adjustment slot 413 cooperates with a second adjustment block 414, the top of the second adjustment block 414 is provided with a third adjustment slot 415 perpendicular to the direction of the second adjustment slot 413, and the third adjustment slot 415 cooperates with a third support seat 416; the third adjustment hinge support 42 includes a fourth seat body 421, and two fourth connecting seats 422 hinged to the fourth seat body 421, a fourth adjustment slot 423 provided on the fourth connecting seat 422, and a fourth support seat 424 cooperated with the fourth adjustment slot 423;

[0064] The styles and installation positions of the first fixed hinge support 31, the first adjustable hinge support 32, the second adjustable hinge support 41 and the third adjustable hinge support 42 can be as follows: Fig.10 As shown, in this Fig.10 In the embodiment, the first adjustment slot 323 in the first adjustment hinge support 32 is arranged horizontally, the second adjustment slot 413 in the second adjustment hinge support 41 is arranged horizontally, the third adjustment slot 415 is arranged vertically, and the fourth adjustment slot 423 in the third adjustment hinge support 42 is arranged vertically; the first adjustment hinge support 32, the second adjustment hinge support 41 and the third adjustment hinge support 42 adopt the following configuration: Fig.10 The design method can make the second support seat 324, the third adjustment seat, the third support seat 416 and the fourth support seat 424 slide in different directions as the bridge deck 9 is deformed, so that the first fixed hinge support 31, the first adjustment hinge support 32, the second adjustment hinge support 41 and the third adjustment hinge support 42 only support the bridge deck 9, and will not generate other constraints on the bridge deck 9 as the bridge deck 9 is deformed;

[0065] Specifically, when the bridge deck 9 is deformed to the left and right due to load or external temperature difference, the bridge deck 9 cannot be deformed to the left due to the existence of the first fixed hinge support 31 and the fourth adjustable hinge support on the left, while the existence of the second adjustable hinge support 41 and the third adjustable hinge support 42 on the right can provide a basis for the deformation of the bridge deck 9 to the right, and when the bridge deck 9 is deformed to the right, it will synchronously drive the second support seat along the first adjustment groove 323 and the second adjustment block 414 to move to the right along the second adjustment groove 413, wherein the movement of the second adjustment block 414 is driven by the third support seat 416;

[0066] When the bridge deck 9 is deformed to the left, and when the right side is reduced, the second support seat 324 moves inward along the first adjustment slot 323 and the second adjustment block 414 moves inward along the second adjustment slot 413;

[0067] When the bridge deck 9 is deformed forward and backward, the third support seat 416 moves forward and backward along the third adjustment groove 415 and the fourth support seat moves left and right along the fourth adjustment groove 423;

[0068] In this embodiment, the connection between the seat body and the connecting seat is a pin connection.

[0069] It should be noted that the deformation mentioned in the present application document is the deformation on the same side, and no deformation work will be performed on the two sides close to the first fixed hinge support 31; because there are two third seat bodies 411 and fourth seat bodies 421 in the second adjustment hinge support 41 and the third adjustment hinge support 42, and what moves with the bridge deck 9 are the third seat bodies 411 and the fourth seat bodies 421 connected to the bottom of the bridge deck 9, rather than the two third seat bodies 411 and the fourth seat bodies 421 moving synchronously.

[0070] In this embodiment, after the bridge deck 9 is installed, gaps will remain between the two sides of the bridge deck 9 and the inner sides of the bridge towers 2 . The existence of the gaps can provide a basis for the deformation work of the bridge deck 9 .

[0071] Preferably, reference Figure 1 The base 1 is assembled from standard aluminum profiles. The advantage of using standard aluminum profiles to assemble the base 1 is that standard aluminum profiles have standardized sizes and structures, and can be easily processed and assembled, so bases 1 of different shapes and sizes can be assembled according to specific scene requirements. For bases 1 of different shapes and sizes, it is only necessary to cut out aluminum profiles of different lengths to achieve assembly. Since aluminum profiles and their connectors have mature standard specifications, no additional processing is required, and the production and assembly efficiency is high.

[0072] Of course, the present utility model may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present utility model.

Claims

1. A suspension bridge model, characterized in that: The invention comprises a concave base, on which two bridge towers are arranged, and the bridge towers are composed of two cross beams and two columns, the top of the lower cross beam is in the same straight line with the top of the base, and two first support assemblies for supporting the bottom edge of the bridge deck are arranged on the two tops of the base, and the top of the lower cross beam is provided with a second support assembly for supporting both sides of the bridge deck connection, and the bridge deck is provided with three, and the top of the column is provided with a groove for placing the pulley assembly, and the top of the base and on both sides of the two first support assemblies are provided with A fixed seat body is provided, and a main cable is connected to the fixed seat body through a first adjusting component. The other end of the main cable passes around the two pulley assemblies in sequence and is connected to another first adjusting component. The first adjusting component is connected to the fixed seat body. The main cable is arranged in an arc between the two bridge towers. The main cable is provided with a plurality of lifting ring assemblies for connecting the bridge deck and the main cable. An expansion joint is left between the two bridge decks, and the bottom of the bridge deck is arranged in a manner that the middle part is low and the two sides are high. Approach bridges are arranged on both sides of the base, and an experimental trolley is placed on one of the approach bridges.

2. A suspension bridge model according to claim 1, characterized in that: The pulley assembly includes a sliding body, placement grooves opened on both sides of the sliding body and used to place bearings, and fixing columns sequentially passing through the sliding body, the placement grooves and the bearings.

3. A suspension bridge model according to claim 2, characterized in that: The groove includes a first groove body for placing the sliding body and a second groove body located above the first groove body and used to fix the two ends of the fixing column. After the sliding body is installed, a certain gap remains between the two sides of the sliding body and the inner wall of the first groove body.

4. A suspension bridge model according to claim 1, characterized in that: The first adjustment component includes a first hinged head, a first rotating part rotatably connected to the first hinged head, and a first adjustment threaded column arranged at the top of the first rotating part, the first adjustment threaded column is matched with a first column body outside, the first column body is provided with a first internal thread matched with the first adjustment threaded column inside, the first column body is provided with a first connecting inner hole located above the first internal thread, and the first connecting inner hole is connected to the main cable.

5. The suspension bridge model according to claim 1, characterized in that: The lifting ring assembly includes a locking clamp connected to the main cable, a lifting cable is connected to the locking clamp below via a second adjusting assembly, a connecting head is connected to the bottom of the lifting cable, and a fixing head is hinged below the connecting head and is threadedly connected to the middle bridge deck.

6. A suspension bridge model according to claim 5, characterized in that: The second adjustment component includes a second hinged head, a second rotating part is rotatably provided on the second hinged head, a second adjustment threaded column is provided at the top end of the second rotating part, a second column is cooperated with the outside of the second adjustment threaded column, a second internal thread is provided in the second column, a second connecting inner hole is provided in the second column and on the side away from the rotating part, and the second connecting inner hole is connected to the suspension cable.

7. The suspension bridge model according to claim 1, characterized in that: The two first support assemblies and the two second support assemblies on the same side form a group, the first support assembly includes a first fixed hinge support and a first adjustable hinge support, and the second support assembly includes a second adjustable hinge support and a third adjustable hinge support.

8. A suspension bridge model according to claim 7, characterized in that: The first fixed hinge support includes a first seat body, a first connecting seat hinged to the first seat body, and a first supporting seat arranged on the top of the first connecting seat; the first adjustable hinge support includes a second seat body, a second connecting seat hinged to the second seat body, a first adjusting groove opened on the second connecting seat and a second supporting seat matching with the first adjusting groove.

9. A suspension bridge model according to claim 7, characterized in that: The second adjustment hinge support includes a third seat body, two third connecting seats hinged to the third seat body, and a second adjustment groove opened on the third connecting seat, the second adjustment groove is matched with a second adjustment block, the top of the second adjustment block is provided with a third adjustment groove perpendicular to the direction of the second adjustment groove, and the third adjustment groove is matched with a third support seat; the third adjustment hinge support includes a fourth seat body, two fourth connecting seats hinged to the fourth seat body, a fourth adjustment groove opened on the fourth connecting seat, and a fourth support seat matched with the fourth adjustment groove.

10. The suspension bridge model according to claim 1, characterized in that: The base is assembled from standard aluminum profiles.

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