Support legs for large-span mechanized suspension bridges

Abstract

The present invention discloses a support leg for a large-span mechanized suspension bridge, wherein two first support plates are hinged on both sides of the upper portion of the support leg in the length direction of the suspension bridge body, and the two first support plates are connected to a first support plate driving assembly, and the first support plate driving assembly can drive the first support plates to switch between a storage state and a support state; the support leg includes an upper support leg and a lower support leg, and the upper support leg and the lower support leg are connected by a support leg telescopic assembly, and the support leg telescopic assembly can adjust the distance between the support leg and the lower support leg to support the suspension bridge. The present invention has an ingenious structural design and a high degree of automation. It is connected to the bottom of the suspension bridge body in a hinged manner, which can not only support the suspension bridge body, but also fit with the lower surface of the suspension bridge body, making it convenient to store and transport; by setting a telescopic assembly, it can adapt to rivers or gullies of different depths, and has strong adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted mechanized bridges, and in particular to a supporting leg used for a large-span mechanized suspension bridge. Background Art

[0002] During the rescue and disaster relief process, quickly opening up roads in the disaster area and delivering relief supplies in a timely manner are key links. Among the many means of opening up damaged roads and bridges, mechanized bridges are the most commonly used bridges in emergency rescue. They can be quickly erected as temporary bridges in rivers, gullies and other locations where there are no fixed bridges. Therefore, mechanized bridges are the most efficient and fastest means.

[0003] Currently, mechanized bridges are typically transported using heavy-duty trucks and other vehicles capable of transporting heavy cargo. They are folded onto the vehicle body during transportation and unfolded when in use, erected over a river or ravine. The vehicle can then detach from the mechanized bridge. However, current mechanized bridges generally have a low load-bearing capacity. Increasing this capacity requires increasing the thickness of the bridge, which increases transportation difficulty and costs. Furthermore, existing mechanized bridges have a fixed span range, limiting their scope of use and failing to meet all application scenarios for disaster relief and wartime.

[0004] Because stay cables provide multi-point elastic support, suspension bridges significantly reduce deck bending moments and deflections, greatly improving span capacity. Furthermore, for a given load capacity, suspension bridges can effectively reduce the weight of the deck. However, during the erection of mechanized suspension bridges, their stability is primarily determined by the support legs. Therefore, it is necessary to design a support leg suitable for mechanized suspension bridges to ensure greater stability and reliability during erection. Summary of the Invention

[0005] The present invention provides a support leg for a large-span mechanized suspension bridge, which can increase the load capacity and enhance the overall stability of the suspension bridge. The specific technical solution is as follows:

[0006] A support leg used in a large-span mechanized suspension bridge, the suspension bridge comprising a suspension bridge body, and a support leg hingedly arranged below the suspension bridge body, wherein two first support plates are hingedly connected on both sides of the upper side of the support leg in the length direction of the suspension bridge body, the two first support plates are connected to a first support plate driving assembly, and the first support plate driving assembly can drive the first support plates to switch between a storage state and a support state; the support leg comprises an upper support leg and a lower support leg, the upper support leg and the lower support leg are connected by a support leg telescopic assembly, and the support leg telescopic assembly can adjust the distance between the support leg and the lower support leg to support the suspension bridge.

[0007] Furthermore, the first support plate driving assembly includes a first support plate driving cylinder, a first support plate driving connecting rod and a first support plate driving connecting block. The first support plate driving cylinder is fixedly arranged inside the support leg, and the output shaft of the first support plate driving cylinder is connected to the first support plate driving connecting block. The two sides connected to the first support plate driving connecting block are respectively hinged to a first support plate driving connecting rod, and the two first support plate driving connecting rods are respectively hinged to the first support plate. The extension and retraction of the first support plate driving cylinder can drive the first support plate to switch between the storage state and the supporting state.

[0008] Furthermore, the suspension bridge body includes a first bridge deck and a second bridge deck that are hinged to each other. The first bridge deck is hinged with a tower on the side close to the second bridge deck. A tower limiting column is provided on the side of the support leg corresponding to the tower. A tower limiting hole is provided on the tower. The tower limiting column can be inserted into the tower limiting hole to further limit the tower and prevent the tower from rotating.

[0009] Furthermore, the end of the tower limiting column away from the tower is a slope, and the first support plate driving connecting block is correspondingly provided with a slope. When the first support plate driving cylinder is extended, the tower limiting column can be pushed out of the support leg surface and plugged into the tower limiting hole.

[0010] Furthermore, the support leg is arranged at a bottom position of the second bridge deck close to the hinged connection with the first bridge deck, one end of the support leg is hinged to the second bridge deck, and the support leg is connected to a support leg driving assembly, which can drive the support leg to switch between a storage state and a supporting state.

[0011] Furthermore, a first support plate receiving groove is provided on the support leg, and the first support plate can be received in the first support plate receiving groove.

[0012] Furthermore, the support leg telescopic assembly includes a support leg telescopic cylinder and a support leg telescopic sleeve. The top of the support leg telescopic sleeve is fixedly connected to the upper support leg. The support leg telescopic sleeve is accommodated in the lower support leg and can slide in the lower support leg. One end of the support leg telescopic cylinder is fixedly connected to the inner side of the lower support leg, and the other end of the support leg telescopic cylinder is connected to the support leg telescopic sleeve. The overall length of the support leg is adjusted by the telescopic length of the support leg telescopic cylinder.

[0013] Furthermore, a pressure sensor is provided on the support leg telescopic cylinder.

[0014] Furthermore, two second support plates are hinged on both sides of the width direction of the suspension bridge body below the lower support leg. The two second support plates are connected to the second support plate driving assembly, and the second support plate driving assembly can drive the second support plates to switch between the storage state and the supporting state.

[0015] Furthermore, a second support plate accommodating groove is provided on the lower support leg, and the second support plate can be accommodated in the second support plate accommodating groove.

[0016] The structural design of the present invention is ingenious and the degree of automation is high. It is connected to the bottom of the suspension bridge body in a hinged manner, which can not only support the suspension bridge body, but also fit with the lower surface of the suspension bridge body, making it convenient to store and transport; by setting a telescopic component, it can adapt to rivers or gullies of different depths and has strong adaptability; finally, by setting flip-open support plates on the upper and lower sides of the support legs, while improving the supporting capacity of the support legs, it also facilitates the storage of the support legs.

[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0019] Figure 1 A three-dimensional diagram of a suspension bridge body and supporting legs in a retracted state applied to a large-span mechanized suspension bridge according to the present invention;

[0020] Figure 2 A schematic diagram of a suspension bridge body applied to a large-span mechanized suspension bridge according to the present invention during erection;

[0021] Figure 3 This is a schematic diagram of a suspension bridge body applied to a large-span mechanized suspension bridge according to the present invention after erection;

[0022] Figure 4 A perspective view of a suspension bridge body and supporting legs of a large-span mechanized suspension bridge according to the present invention in an unfolded state;

[0023] Figure 5 for Figure 4 A magnified view of part A;

[0024] Figure 6 This is a schematic diagram of the tower limit block of the present invention extending out;

[0025] Figure 7 A schematic diagram of the first connecting plate of the upper supporting leg of the present invention being unfolded;

[0026] Figure 8A cross-sectional view of the upper support leg of the present invention Figure 1 ;

[0027] Figure 9 A cross-sectional view of the upper support leg of the present invention Figure 2 ; DETAILED DESCRIPTION

[0028] In order to better understand the purpose, function and specific design scheme of the present invention, the support leg applied to the large-span mechanized suspension bridge of the present invention is further described in detail below with reference to the accompanying drawings.

[0029] like Figures 1-9 As shown, the present invention is applied to the support legs of a large-span mechanized suspension bridge. The suspension bridge used for the support legs includes a suspension bridge body 2. The support legs are hingedly arranged below the suspension bridge body. The suspension bridge body 2 includes a first bridge deck 21 and a second bridge deck 22 which are hinged to each other. The first bridge deck 21 is hinged with a cable tower 3 near the side hinged to the second bridge deck 22. The second bridge deck 22 can be folded above the first bridge deck 21 and the cable tower 3 is rotated to a position parallel to the first bridge deck 21 to form a storage state. The suspension bridge body 2 in the storage state occupies a small space and is convenient for transportation; the second bridge deck 22 can be unfolded and be in the same horizontal plane with the first bridge deck 21 and the cable tower 3 is rotated to a position perpendicular to the first bridge deck 21 to form an erection state. The suspension bridge body 2 in the erection state can be erected in rivers, gullies and the like as a temporary bridge.

[0030] Specifically, if Figure 1-4 As shown, the suspension bridge body 2 of this embodiment can be transported by a carrier vehicle 1. The carrier vehicle 1 is provided with a frame 11, and a load-bearing frame 12 is provided on the frame 11. The frame 11 is hinged to one end of the load-bearing frame 12. The load-bearing frame 12 is used to carry the suspension bridge body 2. The carrier vehicle 1 is preferably a heavy truck to facilitate high-speed driving on the ground, so as to move to the target position, and use the liftable load-bearing frame 12 to unload the suspension bridge body 2 and build the suspension bridge.

[0031] A plurality of rotatable cable-stayed fixing plates 31 are provided on the sides of the first bridge deck 21 and the second bridge deck 22. The ends of the cables away from the cable towers 3 are connected to the cable-stayed fixing plates 31. By rotating the cable-stayed fixing plates 31, the cables can be tensioned to make them work and improve the bearing capacity of the first bridge deck 21 and the second bridge deck 22.

[0032] like Figure 5-6As shown, a tower limiting protrusion 35 is provided on the side of the first bridge deck 21 close to the second bridge deck 22 hinged thereto, and a retractable tower limiting block 36 is provided on the side of the second bridge deck 22 close to the first bridge deck 21 hinged thereto. When 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 conflicts with the tower limiting protrusion 35, and the other side of the lower part of the tower 3 conflicts with the extended tower limiting block 36, thereby limiting the rotation angle of the tower 3 and preventing the tower 3 from tilting.

[0033] A limit block accommodating groove is provided on the side of the second bridge deck 22 close to the hinged connection with the first bridge deck 21, and the tower limit block 36 is provided in the limit block accommodating groove. The tower limit block 36 is connected to the tower limit cylinder, and the tower limit cylinder is fixed on the inner side of the second bridge deck 22. The tower limit cylinder can drive the tower limit block 36 to extend and retract.

[0034] like Figure 4 The second bridge deck 22 is shown with a support leg 4 positioned near the bottom surface hinged to the first bridge deck 21. 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 stowed state and a supporting state. In the stowed state, the support leg 4 rests on the bottom surface of the second bridge deck 22. In the supporting state, the upper end of the support leg 4 abuts the connection between the first and second bridge decks 21, 22, providing support for the first and second bridge decks 21, 22.

[0035] The support leg driving assembly includes a support leg driving cylinder 41, one end of the support leg driving cylinder 41 is hinged to the bottom surface of the second bridge deck 22, and the other end is hinged to the side of the support leg 4. The extension and retraction of the support leg driving cylinder 41 can drive the support leg 4 to switch between the storage state and the supporting state.

[0036] like Figure 7-9 As shown, two first support plates 42 are hingedly connected to the upper side of the support leg 4 on both sides in the longitudinal direction of the suspension bridge body 2. The two first support plates 42 are connected to a first support plate drive assembly, which can drive the first support plates 42 to switch between a storage state and a support state. The first support plates 42 in the storage state are attached to the side of the support leg 4. The support leg 4 of this embodiment is provided with a first support plate receiving groove 43, into which the first support plates 42 can be received. The two first support plates 42 in the support state respectively contact the bottom surfaces 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.

[0037] The first support plate driving assembly includes a first support plate driving cylinder 44, a first support plate driving connecting rod 45 and a first support plate driving connecting block 46. The first support plate driving cylinder 44 is fixedly arranged inside the support leg 4. The output shaft of the first support plate driving cylinder 44 is connected to the first support plate driving connecting block 46. The two sides connected to the first support plate driving connecting block 46 are respectively hinged to a first support plate driving connecting rod 45. The two first support plate driving connecting rods 45 are respectively hinged to the first support plate 42. The extension and retraction of the first support plate driving cylinder 44 can drive the first support plate 42 to switch between the storage state and the supporting state.

[0038] Preferably, a tower-limiting post 37 is provided on one side of the support leg 4 corresponding to the tower 3. The tower 3 is provided with a tower-limiting hole, into which the tower-limiting post 37 can be inserted to further limit the position of the tower 3 and prevent it from rotating. The end of the tower-limiting post 37 facing away from the tower 3 is inclined, and a corresponding inclined surface is also provided on the first support plate drive connecting block 46. When the first support plate drive cylinder 44 is extended, the tower-limiting post 37 is pushed out of the surface of the support leg 4 and inserted into the tower 3's limiting hole. An elastic reset assembly is provided within the tower-limiting hole. When the output shaft of the first support plate drive cylinder 44 is retracted, the elastic reset assembly pushes the tower-limiting post 37 back into the support leg 4, releasing the restraint on the tower 3. The elastic reset assembly can be a spring, an elastic membrane, an elastic rope, or the like.

[0039] The support leg 4 includes an upper support leg 47 and a lower support leg 48, which are connected by a support leg telescoping assembly 49. This assembly adjusts the distance between the support leg 4 and the lower support leg 48, thereby adjusting the length of the support leg 4. In this embodiment, the support leg telescoping assembly 49 includes a support leg telescoping cylinder and a support leg telescoping sleeve. The top of the support leg telescoping sleeve is fixedly connected to the upper support leg 47, and the support leg telescoping sleeve is housed and slidable within the lower support leg 48. One end of the support leg telescoping cylinder is fixedly connected to the inner side of the lower support leg 48, and one end of the support leg telescoping cylinder is connected to the support leg telescoping sleeve. The overall length of the support leg 4 is adjusted by adjusting the extension and retraction of the support leg telescoping cylinder. It is worth noting that the support leg telescoping cylinder is equipped with a pressure sensor. 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 extending, and the support leg can now provide reliable support for the first and second bridge decks 21 and 22.

[0040] Preferably, two second support plates 481 are hingedly attached to the lower portion of the lower support leg 48, on either side in the length or width direction of the suspension bridge body 2. In this embodiment, the second support plates 481 are hingedly attached in the width direction of the suspension bridge body 2. The two second support plates 481 are connected to a second support plate drive assembly, which drives the second support plates 481 between a stowed position and a supporting position. In the stowed position, the second support plates 481 adhere to the sides of the support leg 4. In this embodiment, the lower support leg 48 is provided with a second support plate receiving slot into which the second support plates 481 can be received. In the supporting position, the two second support plates 481 contact the ground, increasing the contact area between the support leg 4 and the ground, thereby enhancing resistance to lateral impacts, such as those caused by flooding. It is understood that hinged attachment of the two second support plates 481 on either side in the length direction of the suspension bridge body 2 can also enhance resistance to longitudinal impacts, such as those caused by the longitudinal thrust of passing traffic. The second support plate drive assembly has the same structure as the first support plate drive assembly and will not be further described here.

[0041] The structural design of the present invention is ingenious and the degree of automation is high. It is connected to the bottom of the suspension bridge body in a hinged manner, which can not only support the suspension bridge body, but also fit with the lower surface of the suspension bridge body, making it convenient to store and transport; by setting a telescopic component, it can adapt to rivers or gullies of different depths and has strong adaptability; finally, by setting flip-open support plates on the upper and lower sides of the support legs, while improving the supporting capacity of the support legs, it also facilitates the storage of the support legs.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A support leg for a large-span mechanized suspension bridge, the suspension bridge comprising a suspension bridge body, the support leg being hingedly arranged below the suspension bridge body, characterized in that: The support leg is arranged at a bottom position of the second bridge deck close to the hinged connection with the first bridge deck, one end of the support leg is hinged to the second bridge deck, and the support leg is connected to the 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; two first support plates are hinged on both sides of the upper part of the support leg in the length direction of the suspension bridge body, and the two first support plates are connected to the first support plate driving assembly, and the first support plate driving assembly includes a first support plate driving cylinder, a first support plate driving connecting rod and a first support plate driving connecting block, and the first support plate driving cylinder is fixedly arranged inside the support leg, and the output shaft of the first support plate driving cylinder is connected to the first support plate driving connecting block, and the two sides connected to the first support plate driving connecting block are respectively hinged with a first support plate driving connecting rod, and the two first support plate driving connecting rods are respectively hinged to the first support plate, and the first The extension and retraction of the support plate driving oil cylinder can drive the first support plate to switch between the storage state and the supporting state; the support leg includes an upper support leg and a lower support leg, and the upper support leg and the lower support leg are connected by a support leg extension and retraction assembly, and the support leg extension and retraction assembly can adjust the distance between the support leg and the lower support leg to form support for the suspension bridge; the suspension bridge body includes a first bridge deck and a second bridge deck which are hinged to each other, and the first bridge deck is hingedly connected to a cable tower on the side close to the second bridge deck which is hinged to the second bridge deck, and a cable tower limiting column is provided on the side of the support leg corresponding to the cable tower, and a cable tower limiting hole is provided on the cable tower, and the cable tower limiting column can be inserted into the cable tower limiting hole to further limit the cable tower and prevent the cable tower from rotating; the end of the cable tower limiting column away from the cable tower is an inclined surface, and the first support plate driving connecting block is correspondingly provided with an inclined surface. When the first support plate driving oil cylinder is extended, the cable tower limiting column can be pushed out of the support leg surface and inserted into the cable tower limiting hole.

2. The support leg for a large-span mechanized suspension bridge according to claim 1, characterized in that: The supporting leg is provided with a first supporting plate accommodating groove, and the first supporting plate can be accommodated in the first supporting plate accommodating groove.

3. The support leg for a large-span mechanized suspension bridge according to claim 1, characterized in that: The support leg telescopic assembly includes a support leg telescopic cylinder and a support leg telescopic sleeve. The top of the support leg telescopic sleeve is fixedly connected to the upper support leg. The support leg telescopic sleeve is accommodated in the lower support leg and can slide in the lower support leg. One end of the support leg telescopic cylinder is fixedly connected to the inner side of the lower support leg, and the other end of the support leg telescopic cylinder is connected to the support leg telescopic sleeve. The overall length of the support leg is adjusted by the telescopic length of the support leg telescopic cylinder.

4. The support leg for a large-span mechanized suspension bridge according to claim 3, characterized in that: A pressure sensor is provided on the support leg telescopic cylinder.

5. The support leg for a large-span mechanized suspension bridge according to claim 1, characterized in that: Two second support plates are hinged on both sides of the width direction of the suspension bridge body below the lower support leg. The two second support plates are connected to the second support plate driving assembly, and the second support plate driving assembly can drive the second support plates to switch between the storage state and the supporting state.

6. The support leg for a large-span mechanized suspension bridge according to claim 5, characterized in that: The lower support leg is provided with a second support plate accommodating groove, and the second support plate can be accommodated in the second support plate accommodating groove.

Images