Modular assembled long-span suspension bridge

Abstract

The application discloses a modular assembled large-span suspension bridge, which comprises a suspension bridge body; the suspension bridge body comprises a first bridge deck and a second bridge deck which are hingedly connected; the second bridge deck can be folded above the first bridge deck to form a storage state; the second bridge deck can be unfolded and arranged on the same horizontal plane with the first bridge deck to form an erected state; and the suspension bridge body in the erected state can be erected at a river, a gully or the like as a temporary bridge. The suspension bridge body is folded to be stored or unfolded, thereby facilitating transportation and increasing the span of the suspension bridge body. In addition, the tension of the cable-stayed cable can be ensured by arranging the rotatable cable-stayed cable fixing disc. Meanwhile, the suspension bridge body can be stably and continuously erected by arranging the overlapping part at the end of the second bridge deck and the fork leg assembly below the end support leg, thereby increasing the bridge erection span and expanding the use environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle-mounted mechanized bridge, and particularly relates to a modular assembly type large-span suspension bridge. BACKGROUND

[0002] Natural disasters and other emergencies occur frequently in China. In the process of rescue and relief, quickly opening the road in the disaster area and timely transporting rescue materials are key links. Among the many means of opening the damaged road and bridge, the mechanized bridge is the most commonly used bridge in emergency rescue. The mechanized bridge can be quickly erected at the position of the river, gully and the like without a fixed bridge as a temporary bridge, so the mechanized bridge is the most efficient and fastest means.

[0003] At present, the mechanized bridge basically adopts a truck or other automobile capable of transporting heavy goods. In the transportation, the mechanized bridge is folded on the automobile body, unfolded from the automobile body in use, erected on the river or gully, and then the vehicle can be separated from the body of the mechanized bridge. However, the current mechanized bridge has low carrying capacity. In order to increase the carrying capacity, the thickness of the bridge body needs to be increased, thereby increasing the transportation difficulty and transportation cost. In addition, the existing mechanized bridge has a fixed span range, and the use range is limited, which cannot meet all application scenarios in rescue and relief and wartime.

[0004] The suspension bridge can provide multi-point elastic support through the stay cable, so that the bending moment and deflection of the bridge deck are obviously reduced, the crossing capacity is greatly improved, and under the same carrying capacity, the suspension bridge can effectively reduce the self weight of the bridge deck. Therefore, it is necessary to improve the existing mechanized bridge and design a vehicle-mounted large-span emergency mechanized suspension bridge. SUMMARY

[0005] The present application provides a modular assembly type large-span suspension bridge, which has the effects of improving the carrying capacity of the bridge, increasing the span of the single-span bridge body, and improving the overall width of the gully and river crossing. The specific technical scheme is as follows:

[0006] A modular assembly type large-span suspension bridge, wherein the suspension bridge body includes a first bridge deck and a second bridge deck connected by a hinge, a cable tower is arranged on the side of the first bridge deck close to the hinge, the cable tower is connected to the first bridge deck by the hinge, a plurality of stay cables are fixedly connected to the two sides of the cable tower, the ends of the stay cables away from the cable tower are connected to the first bridge deck or the second bridge deck, the second bridge deck can be folded above the first bridge deck and the cable tower is rotated to a position parallel to the first bridge deck to form a storage state; the second bridge deck can be unfolded and arranged in the same horizontal plane as the first bridge deck, and the cable tower is rotated to a position perpendicular to the first bridge deck to form an erection state, and the suspension bridge body in the erection state can be erected at the position of the river, gully and the like as a temporary bridge.

[0007] Further, the side surface of the first bridge surface and the second bridge surface is provided with a plurality of rotatable cable-stayed cable fixing discs, the end of the cable-stayed cable away from the cable tower is connected with the cable-stayed cable fixing disc, and rotating the cable-stayed cable fixing disc can tension the cable-stayed cable.

[0008] Further, the cable-stayed cable fixing disc is connected with a fixing disc rotating shaft, the fixing disc rotating shaft is connected with a fixing disc driving assembly, the fixing disc driving assembly can drive the fixing disc rotating shaft to rotate, so as to realize the tensioning of the cable-stayed cable; the fixing disc rotating shaft is connected with a rotating locking assembly, and the rotating locking assembly can lock the fixing disc rotating shaft.

[0009] Further, the second bridge surface is provided with a support leg near the bottom surface hinged with the first bridge surface, one end of the support leg is hinged with the second bridge surface, the support leg is connected with a support leg driving assembly, and the support leg driving assembly can drive the support leg to switch between the storage state and the supporting state; the upper side of the support leg is hinged with two first support plates on both sides in the length direction of the suspension bridge body, the two first support plates are connected with a first support plate driving assembly, and the first support plate driving assembly can drive the first support plate to switch between the storage state and the supporting state.

[0010] Further, the first bridge surface is provided with a cable tower limiting protrusion near the side surface hinged with the second bridge surface, the second bridge surface is provided with a telescopic cable tower limiting block near the side surface hinged with the first bridge surface; one side of the support leg corresponding to the cable tower is provided with a cable tower limiting column, and the cable tower is provided with a cable tower limiting hole, the cable tower limiting column can be inserted into the cable tower limiting hole to limit the cable tower.

[0011] Further, the support leg comprises an upper support leg and a lower support leg, the upper support leg and the lower support leg are connected through a support leg telescopic assembly, and the support leg telescopic assembly can adjust the distance between the upper support leg and the lower support leg.

[0012] Further, the end of the second bridge surface away from the first bridge surface is provided with a lap joint part, the lap joint part can carry the first bridge surface of another suspension bridge body to realize the series connection of a plurality of suspension bridge bodies.

[0013] Further, the lap joint part comprises a lap joint guide block and a lap joint bottom plate, the lap joint guide block is arranged above the lap joint bottom plate, and a containing cavity matched with the end of the first bridge surface is formed between the lap joint guide block and the lap joint bottom plate, the end of the first bridge surface can be inserted into the containing cavity between the lap joint guide block and the lap joint bottom plate to realize the connection of adjacent two suspension bridge bodies.

[0014] Further, the second bridge surface is hinged with an end support leg away from the bottom surface of the first bridge surface, the end support leg is connected with an end support leg driving assembly, and the end support leg driving assembly can drive the end support leg to switch between the storage state and the supporting state.

[0015] Further, the end leg comprises a connected end upper leg and an end lower leg, the end lower leg is provided with a fork assembly at an end away from the end upper leg, the fork assembly comprises two forks, the two forks are hinged to the end lower leg, and the two forks can be spread apart to form a triangular support in the length direction of the bridge body.

[0016] The modular assembly type large-span suspension bridge has the advantages of ingenious structure design, high automation degree, convenient transportation, increased span of the bridge body, tensioned cable-stayed cables through the rotatable cable-stayed cable fixing disc, guaranteed tension of the cable-stayed cables, and guaranteed bearing capacity of the bridge body.

[0017] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, the content of the specification can be implemented, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described below. BRIEF DESCRIPTION OF DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Furthermore, the same reference numerals are used throughout the several drawings to refer to same or like parts. In the drawings:

[0019] Figure 1 It is a perspective view of the modular assembly type large-span suspension bridge of the present application in a storage state;

[0020] Figure 2 It is a perspective view of the carrying vehicle of the modular assembly type large-span suspension bridge of the present application;

[0021] Figure 3 It is a side view of the ramp assembly of the modular assembly type large-span suspension bridge of the present application in a ramp state:

[0022] Figure 4 It is an exploded view of the winch assembly of the modular assembly type large-span suspension bridge of the present application;

[0023] Figure 5 It is a schematic view of the modular assembly type large-span suspension bridge of the present application when erecting Figure 1 ;

[0024] Figure 6 It is a schematic view of the modular assembly type large-span suspension bridge of the present application when erecting Figure 2 ;

[0025] Figure 7 This is a schematic diagram of the modular prefabricated long-span suspension bridge of the present invention after its erection is completed;

[0026] Figure 8 This is a perspective view of the modular prefabricated long-span suspension bridge of the present invention in its unfolded state.

[0027] Figure 9 for Figure 8 Enlarged view of part A;

[0028] Figure 10 This is a schematic diagram of the cable tower limiting block extending as described in the present invention;

[0029] Figure 11 This is a schematic diagram of the connection of the bridge deck overturning assembly of the present invention;

[0030] Figure 12 This is a connection diagram of the rotary locking assembly of the present invention;

[0031] Figure 13 This is a schematic diagram of the unfolded first connecting plate of the upper support leg of the present invention;

[0032] Figure 14 This is a cross-sectional view of the upper support leg of the present invention. Figure 1 ;

[0033] Figure 15 This is a cross-sectional view of the upper support leg of the present invention. Figure 2 ;

[0034] Figure 16 This is an unfolded side view of the bridge deck body according to another embodiment of the present invention;

[0035] Figure 17 This is a schematic diagram of the present invention during the continuous erection of two-span suspension bridge bodies;

[0036] Figure 18 This is a schematic diagram of the present invention when the two-span suspension bridge body is continuously erected.

[0037] Figure 19 This is an unfolded perspective view of the suspension bridge body according to another preferred embodiment of the present invention;

[0038] Figure 20 The unfolded three-dimensional form of the end support leg of another preferred embodiment of the present invention Figure 1

[0039] Figure 21 This is a perspective view of the end support leg being stored in another preferred embodiment of the present invention;

[0040] Figure 22 This is a partial view of the connection position between the fork foot of the end support leg and the lower end support leg in another preferred embodiment of the present invention;

[0041] Figure 23 The schematic diagram of the extension of the fork limiting block of the present application;

[0042] Figure 24 The schematic diagram of the continuous erection of the bridge body of another preferred embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to better understand the purpose, function and specific design scheme of the present application, the modular assembly type large-span suspension bridge of the present application is further described in detail below in combination with the drawings.

[0044] As shown in Figures 1-24 the modular assembly type large-span suspension bridge of the present application comprises a bridge body 2; the bridge body 2 comprises a first deck 21 and a second deck 22 which are hingedly connected, and a cable tower 3 is hingedly connected to the side of the first deck 21 close to the second deck 22; the second deck 22 can be folded above the first deck 21 and the cable tower 3 is rotated to a position parallel to the first deck 21 to form a storage state, and the bridge body 2 in the storage state occupies a small space, facilitating transportation; the second deck 22 can be unfolded and in the same horizontal plane as the first deck 21 and the cable tower 3 is rotated to a position perpendicular to the first deck 21 to form an erection state, and the bridge body 2 in the erection state can be erected at a river, a gully or the like as a temporary bridge.

[0045] Specifically, as shown in Figures 1-5 the bridge body 2 of the present embodiment can be transported by a transport vehicle 1, the transport vehicle 1 is provided with a vehicle frame 11, the vehicle frame 11 is provided with a bearing frame 12, the vehicle frame 11 is hingedly connected to one end of the bearing frame 12, the bearing frame 12 is used for bearing the bridge body 2, and the transport vehicle 1 is preferably a heavy truck to facilitate high-speed driving on the ground, so as to be moved to a target position, and the bridge body 2 is unloaded by the bearing frame 12 which can be raised and the erection of the suspension bridge is performed. The vehicle frame 11 of the present embodiment is provided with a lifting oil cylinder, the output shaft of the lifting oil cylinder is connected to the bearing frame 12, the lifting oil cylinder can lift the bearing frame 12 to make the bearing frame 12 inclined, so that the bridge body 2 slides from the bearing frame 12 to the ground due to the action of gravity, to realize the erection of the bridge body 2.

[0046] The bearing frame 12 is provided with a plurality of rollers 121, the plurality of rollers 121 are used for bearing the bridge body 2, and the bridge body 2 can move on the plurality of rollers 121 to facilitate the loading and unloading of the bridge body 2. Preferably, in order to realize the detachable connection of the bridge body 2 and the bearing frame 12, the bearing frame 12 is provided with a winch assembly 13 at one end close to the front of the transport vehicle 1, the output end of the winch assembly 13 is provided with a sleeve ring 131, the bridge body 2 is provided with a protruding shaft, and the sleeve ring 131 can be detachably sleeved outside the protruding shaft.

[0047] As Figure 3 shown in the figure, the winch assembly 13 comprises a one-side open winch shell 132, the open side of the winch shell 132 is covered with a winch cover 133, the winch shell 132 and the winch cover 133 form a cavity, the cavity is fixed with a winding motor 134 which is fixedly connected with the winch cover 133, the winding motor 134 has two coaxial output shafts, the two coaxial output shafts are fixedly connected with a winding drum 135, the winding drum 135 is wound with a rope 136, one end of the rope 136 is fixed to the winding drum 135, the other end penetrates through the winch cover 133 and is fixedly connected with a sleeve ring 131, the inner diameter of the sleeve ring 131 is consistent with the inner diameter of the convex shaft, a screw cap is threadedly connected on the convex shaft, the screw cap can limit the sleeve ring 131 and prevent the sleeve ring 131 from falling off the convex shaft.

[0048] When it is needed to separate the bridge body 2 from the carrier frame 12, the screw cap is unscrewed, and the sleeve ring 131 is removed from the convex shaft, so that the separation of the bridge body 2 from the carrier frame 12 is realized. When the used bridge body 2 needs to be transported to the carrier frame 12, the sleeve ring 131 is sleeved on the convex shaft, and the screw cap is screwed on the end of the convex shaft to prevent the sleeve ring 131 from falling off the convex shaft, and then the winch assembly 13 is started, the winding drum 135 is driven to rotate by the winding motor 134 through the winding shaft, the rope 136 is wound and collected on the winding drum 135, so that the bridge body 2 is moved through the rope 136.

[0049] As Figure 1 shown in the figure, the first bridge deck 21 and the second bridge deck 22 are respectively provided with a convex shaft, the carrier frame 12 is provided with two groups of winch assemblies 13 above and below, the lower winch assembly 13 can be connected with the first bridge deck 21, and the upper winch assembly 13 can be connected with the second bridge deck 22.

[0050] As Figure 10As shown, the first bridge deck 21 and the second bridge deck 22 are connected through a bridge deck turnover assembly 23, the bridge deck turnover assembly 23 can drive the drawbridge body 2 to switch between the storage state and the erected state, the bridge deck turnover assembly 23 comprises a bridge deck turnover oil cylinder 231, a bridge deck turnover driving plate 232, and a bridge deck turnover connecting plate 233, the output shaft of the bridge deck turnover oil cylinder 231 is hinged to one end of the bridge deck turnover driving plate 232 and the bridge deck turnover connecting plate 233, the end of the bridge deck turnover driving plate 232 away from the output shaft of the bridge deck turnover oil cylinder 231 is hinged to the first bridge deck 21, the end of the bridge deck turnover connecting plate 233 away from the output shaft of the bridge deck turnover oil cylinder 231 is hinged to the second bridge deck 22, and the extension and retraction of the output shaft of the bridge deck turnover oil cylinder 231 can drive the drawbridge body 2 to switch between the storage state and the erected state. Preferably, the bridge deck turnover connecting plate 233 is arc-shaped to increase the turnover range of the second bridge deck 22. It is worth noting that, in order to increase the stability and compactness of the drawbridge body 2 in the storage state, the bridge deck turnover assembly 23 can be accommodated in the bridge deck turnover accommodating groove provided on the first bridge deck 21 and the second bridge deck 22 when the drawbridge body 2 is in the storage state. Preferably, in order to improve the stability of the first bridge deck 21 and the second bridge deck 22 during turnover, the bridge deck turnover assembly 23 of the embodiment is provided in two groups, and the two groups of bridge deck turnover assemblies 23 are arranged side by side at the middle position close to the first bridge deck 21 and the second bridge deck 22.

[0051] As shown in the drawings, Figure 6 The first bridge deck 21 is provided with a pylon 3 close to the side surface hinged to the second bridge deck 22, the pylon 3 is hinged to the first bridge deck 21, a plurality of stay cables are fixedly connected to the two side surfaces of the pylon 3, the ends of the stay cables away from the pylon 3 are connected to the first bridge deck 21 or the second bridge deck 22, and the pylon 3 and the stay cables can improve the load-carrying capacity of the first bridge deck 21 and the second bridge deck 22.

[0052] The side surfaces of the first bridge deck 21 and the second bridge deck 22 are provided with a plurality of rotatable stay cable fixing discs 31, the ends of the stay cables away from the pylon 3 are connected to the stay cable fixing discs 31, and rotating the stay cable fixing discs 31 can tension the stay cables to make the stay cables work and improve the load-carrying capacity of the first bridge deck 21 and the second bridge deck 22.

[0053] Specifically, as shown in the drawings, Figure 11 The stay cable fixing disc 31 is connected to a fixing disc rotating shaft 32, the fixing disc rotating shaft 32 is connected to a fixing disc driving assembly 33, the fixing disc driving assembly 33 can drive the fixing disc rotating shaft 32 to rotate to tension the stay cables, and the fixing disc driving assembly 33 of the embodiment comprises a fixing disc driving motor, the fixing disc driving motor drives the fixing disc rotating shaft 32 to rotate through a gear, so that the stay cables are wound on the stay cable fixing disc 31 to realize the tensioning of the stay cables. It can be understood that the stay cables can also be wound on the stay cable fixing disc 31 when the drawbridge body 2 is in the storage state to facilitate storage.

[0054] Preferably, in this embodiment, the fixed disc shaft 32 is connected to the rotation locking assembly 34. The rotation locking assembly 34 can lock the fixed disc shaft 32 so that the fixed disc shaft 32 cannot rotate, thereby achieving the purpose of locking the stay cable and preventing the stay cable from loosening after tensioning, which would affect the load-bearing capacity of the suspension bridge body 2.

[0055] The rotating locking assembly 34 includes a rotating locking drive assembly 341, a locking disc 342, and a sliding disc 343. The locking disc 342 is fixedly mounted on the fixed disc shaft 32, and the sliding disc 343 is slidably mounted on the fixed disc shaft 32. The locking drive assembly can push the sliding disc 343 to abut against the locking disc 342 and lock it in place, thereby fixing the locking disc 342 and the fixed disc shaft 32 and thus achieving the locking of the cable stay.

[0056] The rotation locking drive assembly 341 includes a cable-stayed locking cylinder 3411. The output shaft of the cable-stayed locking cylinder 3411 is connected to a locking hinge block 3412. The locking hinge block 3412 is hinged to a locking connecting rod 3413, and the locking connecting rod 3413 is hinged to a sliding disc 343. The extension and retraction of the output shaft of the cable-stayed locking cylinder 3411 can push the sliding disc 343 to slide on the fixed disc rotating shaft 32, thereby realizing the locking and unlocking of the fixed disc rotating shaft 32. Preferably, in this embodiment, the locking disc 342, the sliding disc 343, and the locking connecting rod 3413 are in two sets, respectively arranged on both sides of the fixed disc rotating shaft 32. Using two sets can improve the reliability of locking the fixed disc rotating shaft 32. It is worth noting that anti-slip parts are provided on the end faces of the locking disc 342 and the sliding disc 343 that abut against each other, in order to increase the friction between the locking disc 342 and the sliding disc 343. The anti-slip parts can be anti-slip protrusions or anti-slip textures, etc.

[0057] like Figures 8-10 As shown, a tower limiting protrusion 35 is provided on the side of the first bridge deck 21 that is hinged to the second bridge deck 22, and a retractable tower limiting block 36 is provided on the side of the second bridge deck 22 that is hinged to the first bridge deck 21. After the first bridge deck 21 and the second bridge deck 22 are unfolded, the tower 3 rotates to a vertical position. At this time, one side of the lower part of the tower 3 abuts against the tower limiting protrusion 35, and the other side of the lower part of the tower 3 abuts against the extended tower limiting block 36, thereby limiting the rotation angle of the tower 3 and preventing the tower 3 from tilting.

[0058] A limiting block receiving groove is provided on the side of the second bridge deck 22 that is hinged to the first bridge deck 21. The tower limiting block 36 is located in the limiting block receiving groove and is connected to the tower limiting cylinder. The tower limiting cylinder is fixed inside the second bridge deck 22 and can drive the tower limiting block 36 to extend and retract.

[0059] like Figures 6-7A support leg 4 is provided on the bottom surface of the second bridge deck 22 near the first bridge deck 21, where it is hinged. One end of the support leg 4 is hinged to the second bridge deck 22. The support leg 4 is connected to a support leg drive assembly, which can drive the support leg 4 to switch between a retracted state and a supported state. In the retracted state, the support leg 4 is attached to the bottom surface of the second bridge deck 22. In the supported state, the upper end of the support leg 4 abuts against the junction of the first bridge deck 21 and the second bridge deck 22 to provide support for the first bridge deck 21 and the second bridge deck 22.

[0060] The support leg drive assembly includes a support leg drive cylinder 41. One end of the support leg drive cylinder 41 is hinged to the bottom surface of the second bridge surface 22, and the other end is hinged to the side of the support leg 4. The extension and retraction of the support leg drive cylinder 41 can drive the support leg 4 to switch between the retracted state and the supported state.

[0061] like Figures 12-14 As shown, two first support plates 42 are hinged to both sides of the upper part of the support leg 4 along the length of the suspension bridge body 2. The two first support plates 42 are connected to a first support plate driving assembly, which can drive the first support plates 42 to switch between a retracted state and a supported state. In the retracted state, the first support plate 42 is attached to the side of the support leg 4. In this embodiment, the support leg 4 is provided with a first support plate receiving groove 43, into which the first support plate 42 can be accommodated. In the supported state, the two first support plates 42 abut against the bottom surfaces of the first bridge deck 21 and the second bridge deck 22, respectively, to provide support for the first bridge deck 21 and the second bridge deck 22.

[0062] The first support plate drive assembly includes a first support plate drive cylinder 44, a first support plate drive connecting rod 45, and a first support plate drive connecting block 46. The first support plate drive cylinder 44 is fixedly installed inside the support leg 4. The output shaft of the first support plate drive cylinder 44 is connected to the first support plate drive connecting block 46. The two sides of the first support plate drive connecting block 46 are respectively hinged to a first support plate drive connecting rod 45. The two first support plate drive connecting rods 45 are respectively hinged to the first support plate 42. The extension and retraction of the first support plate drive cylinder 44 can drive the first support plate 42 to switch between the storage state and the support state.

[0063] Preferably, the side of the support leg 4 corresponding to the cable tower 3 is provided with a cable tower limiting column 37, and the cable tower 3 is provided with a cable tower limiting hole, the cable tower limiting column 37 can be inserted into the cable tower limiting hole to further limit the cable tower 3 and prevent the cable tower 3 from rotating. The end of the cable tower limiting column 37 away from the cable tower 3 is beveled, and a corresponding bevel is also provided on the first support plate driving connection block 46. When the first support plate driving oil cylinder 44 is extended, the cable tower limiting column 37 can be lifted out of the surface of the support leg 4 and inserted into the cable tower limiting hole. An elastic reset assembly is provided in the cable tower limiting hole. When the output shaft of the first support plate driving oil cylinder 44 is retracted, the elastic reset assembly can lift the cable tower limiting column 37 back into the support leg 4 to release the limitation of the cable tower 3. The elastic reset assembly can be a spring, an elastic film, an elastic rope, etc.

[0064] The support leg 4 includes an upper support leg 47 and a lower support leg 48. The upper support leg 47 and the lower support leg 48 are connected through a support leg telescopic assembly 49, which can adjust the distance between the support leg 4 and the lower support leg 48. Thus, the length of the support leg 4 is adjusted. The support leg telescopic assembly 49 of the embodiment includes a support leg telescopic oil cylinder and a support leg telescopic sleeve. The top of the support leg telescopic sleeve is fixedly connected with the upper support leg 47. The support leg telescopic sleeve is accommodated in and can slide in the lower support leg 48. One end of the support leg telescopic oil cylinder is fixedly connected with the inner side of the lower support leg 48. The other end of the support leg telescopic oil cylinder is connected with the support leg telescopic sleeve. The length of the support leg telescopic oil cylinder is adjusted to adjust the overall length of the support leg 4. It is worth noting that a pressure sensor is provided on the support leg telescopic oil cylinder. As the length of the support leg 4 increases, the pressure detected by the pressure sensor also increases. When the preset pressure is reached, the support leg 4 stops elongating. At this time, the support leg can provide reliable support for the first bridge deck 21 and the second bridge deck 22.

[0065] Preferably, two second support plates 481 are hingedly connected to the lower side of the lower support leg 48 in the width direction of the bridge body 2. The two second support plates 481 are connected with a second support plate driving assembly, which can drive the second support plates 481 to switch between a storage state and a support state. The second support plates 481 in the storage state are attached to the side surface of the support leg 4. The support leg 4 of the embodiment is provided with a second support plate accommodating groove, and the second support plates 481 can be accommodated in the second support plate accommodating groove. The two second support plates 481 in the support state respectively abut against the ground to increase the contact area between the support leg 4 and the ground, thereby improving the support capacity of the support leg 4. The second support plate driving assembly has the same structure as the first support plate driving assembly, and thus will not be described here.

[0066] As Figures 15-17As shown, in another embodiment, the end of the second bridge deck 22 away from the first bridge deck 21 is provided with an overlapping portion. The overlapping portion can support the first bridge deck 21 of another suspension bridge body 2, thereby realizing the series connection of multiple suspension bridge bodies 2 to achieve the construction of long-span ditches or rivers. After the first suspension bridge body 2 is erected, the transport vehicle 1 can drive onto the first suspension bridge body 2 to construct the second suspension bridge body 2. In addition, during the continuous construction of suspension bridge bodies 2, in order to improve the resistance of the lower support leg 48 to thrust, impact and overturning in the vehicle's travel direction, the second support plate 481 is hinged to both sides in the length direction of the suspension bridge body 2.

[0067] The overlapping part includes an overlapping guide block 24 and an overlapping base plate 25. The overlapping guide block 24 is disposed above the overlapping base plate 25. A receiving cavity matching the end of the first bridge deck 21 is formed between the overlapping guide block 24 and the overlapping base plate 25. The end of the first bridge deck 21 can be inserted into the receiving cavity between the overlapping guide block 24 and the overlapping base plate 25 to realize the connection of two adjacent suspension bridge bodies 2.

[0068] It is worth noting that an end support leg 5 is hinged to the bottom surface of the second bridge deck 22 away from the first bridge deck 21. The end support leg 5 is connected to an end support leg drive assembly, which can drive the end support leg 5 to switch between a retracted state and a supported state. In the retracted state, the end support leg 5 is attached to the bottom surface of the second bridge deck 22. In the supported state, the upper end surface of the end support leg 5 abuts against the bottom surface of the end of the second bridge deck 22 and the bottom surface of the overlapping part, so as to provide support for the second bridge deck 22 and the overlapping part. The structure of the end support leg 5 is the same as that of the support leg 4, and will not be described in detail here.

[0069] It is worth noting that the aforementioned end support 5 is suitable for use when continuously erecting two or three spans of the suspension bridge body 2. In another preferred embodiment, in order to improve the continuous erection of suspension bridge bodies 2 with more than three spans, such as... Figures 18-24 As shown, the end support leg 5 in this embodiment includes an upper end support leg 51 and a lower end support leg 52. The upper end support leg 51 has a structure that is basically the same as that of the upper support leg 47, but does not include the tower limiting post 37. The upper end support leg 51 and the lower end support leg 52 are telescopic, and their telescopic structure is the same as that of the upper support leg 47 and the lower support leg 48, which will not be described in detail here.

[0070] In this embodiment, a fork-leg assembly 53 is provided at the end of the lower end support leg 52 away from the upper end support leg 51. The fork-leg assembly 53 includes two forks 531, which are hinged to the lower end support leg 52. The two forks 531 can be spread apart to form a triangular support in the length direction of the suspension bridge body 2, thereby improving the impact resistance of the end support leg 5 in the length direction of the suspension bridge body 2, and thus ensuring the stability of the suspension bridge body 2 with more than three spans during continuous erection.

[0071] Two fork legs 531 are connected with a fork leg driving assembly, and the fork leg driving assembly can drive the fork legs 531 to switch between the storage state and the supporting state. The end of the fork leg 531 in the storage state is attached to the end face of the end lower support leg 52, and the outer side face of the fork leg 531 is flush with the outer side face of the end lower support leg 52, so as to facilitate the storage of the end support leg 5; the two fork legs 531 in the supporting state are respectively rotated away from each other and form an included angle of 30-60 degrees, and the included angle of the embodiment is preferably 30 degrees, so as to form a triangular support in the length direction of the bridge body 2.

[0072] The fork leg driving assembly comprises a fork leg driving oil cylinder 532, a fork leg driving connecting rod 533 and a fork leg driving connecting block 534. The fork leg driving oil cylinder 532 is fixedly arranged inside the end lower support leg 52, the output shaft of the fork leg driving oil cylinder 532 is connected with the fork leg driving connecting block 534, the fork leg driving connecting block 534 is hingedly connected with the two fork leg driving connecting rods 533, the two fork leg driving connecting rods 533 are respectively hingedly connected with the fork legs 531, and the extension and retraction of the fork leg driving oil cylinder 532 can drive the fork legs 531 to switch between the storage state and the supporting state. The fork leg 531 of the embodiment is provided with a fork leg driving slot 535 at the middle position close to the upper portion, a fork leg driving column is arranged in the fork leg driving slot 535, and the fork leg driving connecting rod 533 can be hingedly connected with the fork leg driving column, so as to realize the connection between the fork leg driving connecting rod 533 and the fork leg 531. By arranging the fork leg driving slot 535, the fork leg driving connecting rod 533 can be partially accommodated in the fork leg driving slot 535 when the fork leg 531 is in the storage state, so as to save space.

[0073] Preferably, as shown in Figures 21-24 The position where the fork leg 531 is hingedly connected with the end lower support leg 52 is provided with a fork leg limiting assembly 54, the fork leg limiting assembly 54 can limit the fork leg 531 in the supporting state, prevent the fork leg 531 from rotating inward, and improve the reliability of the fork leg 531 during work. The fork leg limiting assembly 54 comprises a fork leg limiting block 541 and a fork leg limiting oil cylinder connected with each other. The end face of the position where the end lower support leg 52 is hingedly connected with the fork leg 531 is provided with a limiting cavity, the fork leg limiting oil cylinder is fixedly arranged in the limiting cavity, the end of the output shaft of the fork leg limiting oil cylinder is connected with the fork leg limiting block 541, and the fork leg limiting oil cylinder can drive the fork leg limiting block 541 to extend or retract in the limiting cavity through the extension and retraction of the output shaft. When the fork leg 531 is in the supporting state, the output shaft of the fork leg limiting oil cylinder extends, so that the fork leg limiting block 541 abuts against the end of the fork leg 531, thereby limiting the fork leg 531. When the fork leg 531 needs to be stored, the output shaft of the fork leg limiting oil cylinder retracts, thereby driving the fork leg limiting block 541 to move into the limiting cavity, and the fork leg 531 can be rotated to the storage state.

[0074] It is worth noting that the fork foot 531 is movably arranged away from one end of the end lower support leg 52, and a ground foot 536 is arranged at the middle position of the fork foot 531, and a connecting ring is arranged at the inner side end of the ground foot 536, and a steel wire rope connecting hole is arranged on the fork foot driving connecting rod 533, and the inner side end of the ground foot 536 is connected with the fork foot driving connecting rod 533 through the steel wire rope. When the fork foot 531 is unfolded, the steel wire rope connecting hole on the fork foot driving connecting rod 533 moves downward, and the ground foot 536 gradually becomes horizontal by relying on its own gravity, and the horizontal ground foot 536 can increase the force bearing area of the fork foot 531, so as to reduce the base stress and improve the adaptability of the erection environment. When the fork foot 531 is folded inward, the steel wire rope connecting hole on the fork foot driving connecting rod 533 moves upward, and the steel wire rope pulls the ground foot 536 into a vertical state and is accommodated between the two fork feet 531.

[0075] Preferably, in order to improve the stability of the end support leg 5, the fork foot 531 assembly 53 of the embodiment is two groups, which are arranged on both sides of the width direction of the end lower support leg 52.

[0076] The structure of the present application is ingenious, and the degree of automation is high. The suspension bridge body is folded for storage or unfolding, which facilitates transportation and increases the span of the suspension bridge body. In addition, by arranging the rotatable cable fixing disc, the cable can be tensioned to ensure the tension of the cable and the carrying capacity of the suspension bridge body. At the same time, by arranging the overlapping part at the end of the second bridge surface and the fork foot assembly below the end support leg, the suspension bridge body can be stably and continuously erected, which increases the bridge span and expands the use environment.

[0077] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A modular assembled long-span suspension bridge, characterized in that, The suspension bridge body comprises a first bridge deck and a second bridge deck that are hingedly connected, the first bridge deck is provided with a cable tower near the side hingedly connected with the second bridge deck, the cable tower is hingedly connected with the first bridge deck, a plurality of cable stays are fixedly connected with both sides of the cable tower, one end of the cable stay away from the cable tower is connected with the first bridge deck or the second bridge deck, the second bridge deck can be folded above the first bridge deck and the cable tower is rotated to a position parallel to the first bridge deck to form a storage state; The second bridge deck can be unfolded and in the same horizontal plane as the first bridge deck and the cable tower is rotated to a position perpendicular to the first bridge deck to form a spanning state, the suspension bridge body in the spanning state can be used as a temporary bridge in a river or a ravine; the first bridge deck and the second bridge deck are connected through a bridge deck turnover assembly, the bridge deck turnover assembly can drive the suspension bridge body to switch between the storage state and the spanning state.

2. The modular assembled long-span suspension bridge according to claim 1, wherein, The side of the first bridge deck and the second bridge deck is provided with a plurality of rotatable cable stay fixing discs, one end of the cable stay away from the cable tower is connected with the cable stay fixing disc, and rotating the cable stay fixing disc can tension the cable stay.

3. The modular assembled long-span suspension bridge according to claim 2, wherein, The cable stay fixing disc is connected with a fixing disc rotating shaft, the fixing disc rotating shaft is connected with a fixing disc driving assembly, the fixing disc driving assembly can drive the fixing disc rotating shaft to rotate to tension the cable stay; the fixing disc rotating shaft is connected with a rotating locking assembly, and the rotating locking assembly can lock the fixing disc rotating shaft.

4. The modular assembled long-span suspension bridge according to claim 1, wherein, The second bridge deck is provided with a support leg near the bottom surface hingedly connected with the first bridge deck, one end of the support leg is hingedly connected with the second bridge deck, the support leg is connected with a support leg driving assembly, and the support leg driving assembly can drive the support leg to switch between a storage state and a supporting state; two first support plates are hingedly connected above both sides of the support leg in the length direction of the suspension bridge body, the two first support plates are connected with a first support plate driving assembly, and the first support plate driving assembly can drive the first support plates to switch between the storage state and the supporting state.

5. The modular assembled long-span suspension bridge according to claim 4, wherein, The first bridge deck is provided with a cable tower limiting protrusion near the side hingedly connected with the second bridge deck, and the second bridge deck is provided with a telescopic cable tower limiting block near the side hingedly connected with the first bridge deck; one side of the support leg corresponding to the cable tower is provided with a cable tower limiting column, and the cable tower is provided with a cable tower limiting hole, the cable tower limiting column can be inserted into the cable tower limiting hole to limit the cable tower.

6. The modular assembled long-span suspension bridge according to claim 4, wherein, The support leg comprises an upper support leg and a lower support leg, the upper support leg and the lower support leg are connected through a support leg telescopic assembly, and the support leg telescopic assembly can adjust the distance between the upper support leg and the lower support leg.

7. The modular assembled long-span suspension bridge according to claim 1, wherein, The end of the second bridge deck away from the first bridge deck is provided with a lap joint portion, the lap joint portion can carry the first bridge deck of another suspension bridge body to realize the series connection of a plurality of suspension bridge bodies.

8. The modular assembled long-span suspension bridge according to claim 7, wherein, The lap joint portion comprises a lap joint guide block and a lap joint bottom plate, the lap joint guide block is arranged above the lap joint bottom plate, and a containing cavity matched with the end of the first bridge deck is formed between the lap joint guide block and the lap joint bottom plate, the end of the first bridge deck can be inserted into the containing cavity between the lap joint guide block and the lap joint bottom plate to realize the connection of adjacent two suspension bridge bodies.

9. The modular assembled long-span suspension bridge according to claim 7, wherein, The end of the second bridge deck away from the first bridge deck is provided with an end support leg, the end support leg is connected with an end support leg driving assembly, and the end support leg driving assembly can drive the end support leg to switch between a storage state and a supporting state.

10. The modular assembled long-span suspension bridge according to claim 9, wherein, The end leg comprises a connected end upper leg and an end lower leg, and a fork assembly is arranged at one end of the end lower leg away from the end upper leg, the fork assembly comprising two forks which are hingedly connected to the end lower leg and can be spread apart to form a triangular support in the length direction of the bridge body.

Images