Quickly assembled self-erecting bridge for road construction

Abstract

The present invention relates to the technical field of road construction, and discloses a rapid assembly self-erecting bridge for road construction, including an intermediate section above the construction section and two inclined sections. The upper ends of the inclined sections are butted against the ends of the intermediate section, and the lower ends of the inclined sections are abutted against the erection section. The top of the intermediate section and the tops of the two inclined sections form an erected road surface, and the bottom of the intermediate section and the bottoms of the two inclined sections enclose a construction space for workers to operate. A plurality of intermediate hydraulic rods are provided at the bottom of the intermediate section, the upper end of the inclined section forms a butting section, and an end hydraulic rod is supported at the bottom of the butting section. The erected road surface replaces the construction section, and vehicles can drive normally on the road through the erected road surface without affecting the normal use of the road. The construction is convenient and will not cause road congestion. At the same time, workers can carry out normal construction operations in the construction space.

Description

Technical Field

[0001] The invention patent relates to the technical field of road construction, specifically, to a fast-assembled self-erecting bridge used for road construction. Background Art

[0002] From the word meaning, road refers to the infrastructure for various trackless vehicles and pedestrians to pass through. According to their usage characteristics, they are divided into highways, urban roads, rural roads, factory and mine roads, forestry roads, examination roads, competition roads, automobile test roads, workshop passages and school roads.

[0003] As the main component of a city, roads are widely distributed and numerous. When roads are in use for a long time or need to be constructed due to other municipal reasons, construction sections need to be formed in the roads. At this time, the roads will become narrower or interrupted, and vehicles will be unable or difficult to pass through the roads, which can easily cause traffic jams and greatly affect the city's traffic.

[0004] In the prior art, in order to reduce the impact of the construction section on the use of the road, a temporary road section is often opened on the side of the construction section, and the temporary road section is used to temporarily replace the construction section. When the construction section is completed, the temporary road section is cancelled.

[0005] The method of opening up temporary road sections to replace the construction sections not only makes construction troublesome, but the temporary road sections are often narrow and can easily cause traffic jams. Summary of the invention

[0006] The purpose of the present invention is to provide a fast-assembled self-erecting bridge for road construction, aiming to solve the problem in the prior art that a temporary road is set on the side of a construction section of a road, which causes construction troubles.

[0007] The present invention is implemented as follows: a fast-assembly self-erecting bridge for road construction, a bridge body erected and arranged along the extension direction of the road, the bridge body comprising a middle section extending along the front-rear direction of the road and spanning above the construction section of the road and two inclined sections, the road having erection sections distributed at both ends of the construction section, the two inclined sections being arranged at both ends of the middle section respectively; along the direction of the end of the middle section extending downward to the road, the inclined sections are arranged downwardly away from the middle section;

[0008] The upper end of the inclined section is butted against the end of the middle section, and the lower end of the inclined section is butted against the erection section, so that a relatively fixed integral structure is formed between the two inclined sections and the middle section; the top of the middle section and the tops of the two inclined sections form a continuous erection road surface for vehicles to travel on, and the bottom of the middle section and the bottoms of the two inclined sections enclose a construction space for workers to work, and the construction space is located above the construction section;

[0009] A plurality of intermediate hydraulic rods are provided at the bottom of the intermediate section, and the plurality of intermediate hydraulic rods support the intermediate section from bottom to top; the upper end of the inclined section forms a docking section, the docking section is docked at the end of the intermediate section, and an end hydraulic rod is supported at the bottom of the docking section, and the end hydraulic rod supports the inclined section from bottom to top.

[0010] Furthermore, a plurality of detachable fences are respectively provided on both sides of the erected road surface, and the plurality of fences are arranged at intervals in sequence along the length direction of the erected road surface.

[0011] Furthermore, insertion holes are respectively provided on both sides of the inclined section and both sides of the intermediate section, and the insertion holes are arranged at intervals along the length direction of the erected road surface; the bottom of the fence protrudes downward with insertion bars, and the insertion bars are movably inserted into the insertion holes.

[0012] Furthermore, a docking interval is provided between adjacent fences, a fixed column is provided in the docking interval, a connecting sleeve that moves up and down along the column is provided on the column, and the connecting sleeve has a connecting section arranged on the side facing the fence; connecting blocks facing the docking interval are respectively provided on both sides of the fence, a connecting groove with an open top is provided on the connecting section, and the connecting blocks are inserted into the connecting groove from top to bottom.

[0013] Furthermore, a plurality of intermediate steel plates are laid on the top of the intermediate section, and the plurality of intermediate steel plates are butted and arranged in sequence along the length direction of the intermediate section, and the intermediate steel plates are arranged across the width direction of the intermediate section;

[0014] A plurality of inclined steel plates are laid on the top of the inclined section, and the plurality of inclined steel plates are butted and arranged in sequence along the length direction of the inclined section, and the inclined steel plates are arranged across the width direction of the inclined section; the plurality of intermediate steel plates and the plurality of inclined steel plates form the erected road surface.

[0015] Furthermore, a plurality of raised strips are provided on the top of the inclined steel plate, and the plurality of raised strips are arranged at intervals along the length direction of the inclined section, and the raised strips extend along the width direction of the inclined section; the raised strips have a raised surface arranged upward and in an arc shape, and a plurality of downwardly recessed groove strips are provided on the raised surface, and the groove strips extend along the length direction of the raised strip, and the plurality of groove strips are arranged at intervals along the arc bending direction of the raised surface.

[0016] Furthermore, two guide rails extending along the road are provided on the erected section, and the two guide rails are arranged at intervals; side frames extending downward are respectively provided on both sides of the inclined section, and rail wheels are provided on the side frames; when moving the inclined section, the rail wheels abut against the guide rails and move along the guide rails;

[0017] Two detachable chucks are provided on the guide rail. After the end hydraulic rod supports the docking section from bottom to top, the two chucks are clamped on the guide rail and are respectively located on both sides of the rail wheel, restricting the rail wheel from moving along the guide rail.

[0018] Further, the upper end of the inclined section is hinged to the end of the middle section through a hinge shaft, and a torsion spring for driving the inclined section to swing downward and reset relative to the middle section is provided on the hinge shaft; an inclined hydraulic rod is provided at the end of the middle section, and the inclined hydraulic rod is connected to the inclined section, and the inclined section is driven to swing up and down relative to the middle section through the telescopic movement of the inclined hydraulic rod.

[0019] Further, the lower end of the inclined section has a pressing section, and the bottom of the pressing section has a pressing surface that is flat and presses against the erection section from top to bottom; the pressing surface is recessed upward to form a recessed groove, the bottom of the recessed groove has a top surface, and both sides of the recessed groove have side surfaces;

[0020] A transverse strip is fixedly provided on the erection section, and elastic surfaces are respectively provided on both sides of the erection section, and side elastic layers are covered on the elastic surfaces. The top of the transverse strip is recessed downward and has an embedding groove; along the direction from top to bottom, the side surface is inclined away from the recessed groove, and the elastic surface is inclined in the same direction as the side surface;

[0021] An elastic strip is provided in the recessed groove. The upper end of the elastic strip is docked on the top surface of the recessed groove, and the lower end of the elastic strip extends downward; the transverse strip is embedded in the recessed groove, the side surface presses against the side elastic layer, and the side elastic layer is in a compressed state; the elastic strip is embedded in the embedding groove, the lower end of the elastic strip presses against the bottom of the embedding groove, and there is an elastic interval between the top of the transverse strip and the top surface, and the elastic strip is in an elastically compressed state.

[0022] Further, the upper part of the recessed groove has an upper groove, the elastic interval is located in the upper groove, and the elastic strip has an upper section located in the upper groove; a plurality of side wall grooves are provided on the inner side wall of the upper groove, and the plurality of side wall grooves are arranged in a circumferential manner around the upper groove;

[0023] The upper section is in a compressed state and is compressed and extruded toward the inner side wall of the upper groove. The outer periphery of the upper section is embedded in the side wall groove and presses against the inner side wall of the upper groove.

[0024] Compared with the prior art, for the rapid assembly self - bridging for road construction provided by the present invention, the bridge body is erected on the construction section, and the middle hydraulic rod and the end hydraulic rod are used to support the middle section and the inclined section respectively, so that the whole bridge body is relatively fixed above the construction section. The erected road surface replaces the construction section, and vehicles can drive normally on the road through the erected road surface without affecting the normal use of the road. The construction is convenient and will not cause road congestion. At the same time, workers can carry out normal construction operations in the construction space. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the front view schematic diagram of the rapid assembly self - bridging for road construction provided by the present invention;

[0026] Figure 2 is the front view schematic diagram of the connection of adjacent fences provided by the present invention;

[0027] Figure 3 is the front view schematic diagram of the inclined steel plate provided by the present invention;

[0028] Figure 4 is the partial sectional view of the pressing section provided by the present invention;

[0029] Figure 5 is the partial sectional view of the transverse bar provided by the present invention;

[0030] Figure 6 is the partial sectional view of the cooperation between the transverse bar and the pressing section provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0032] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0033] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] Refer toFigure 1-6 The figure shows a preferred embodiment of the present invention.

[0035] A fast-assembled self-erecting bridge for road construction, a bridge body erected and arranged along the extension direction of the road, the bridge body comprising a middle section 300 extending along the front-to-back direction of the road and spanning above a construction section 201 of the road, and two inclined sections 100, the road having erection sections 200 distributed at both ends of the construction section 201, and two inclined sections 100 respectively arranged at both ends of the middle section 300; extending downward along the end of the middle section 300 to the direction of the road, the inclined section 100 is arranged to be inclined downward away from the middle section 300.

[0036] The bridge body crosses the construction section 201 along the front-rear direction. When the construction section 201 is under construction, it can be used as a supplementary part of the road without causing interruption of the entire road.

[0037] The upper end of the inclined section 100 is butted against the end of the middle section 300, and the lower end of the inclined section 100 is butted against the erection section 200, forming a relatively fixed integral structure between the two inclined sections 100 and the middle section 300; the top of the middle section 300 and the tops of the two inclined sections 100 form a continuous erection road surface for vehicles to travel on, and the bottom of the middle section 300 and the tops of the two inclined sections 100 enclose a construction space 301 for workers to work, and the construction space 301 is located above the construction section 201.

[0038] A plurality of intermediate hydraulic rods 302 are provided at the bottom of the middle section 300, and the plurality of intermediate hydraulic rods 302 support the middle section 300 from bottom to top; a docking section is formed at the upper end of the inclined section 100, and the docking section docks at the end of the middle section 300, and an end hydraulic rod 102 is supported at the bottom of the docking section, and the end hydraulic rod 102 supports the inclined section 100 from bottom to top.

[0039] The above-mentioned fast-assembly self-erecting bridge for road construction has a bridge body erected on the construction section 201, and uses the middle hydraulic rod 302 and the end hydraulic rod 102 to support the middle section 300 and the inclined section 100 respectively, so that the entire bridge body is relatively fixed above the construction section 201. The erected road surface replaces the construction section 201, and vehicles can drive normally on the road through the erected road surface without affecting the normal use of the road. The construction is convenient and will not cause road congestion. At the same time, workers can perform normal construction work in the construction space 301.

[0040] In this embodiment, a plurality of detachable fences 500 are respectively arranged on both sides of the erected road surface, and the plurality of fences 500 are sequentially spaced along the length direction of the erected road surface, so that protection can be formed on both sides of the erected road surface.

[0041] On both sides of the inclined section 100 and both sides of the middle section 300, jack holes are respectively provided, and the jack holes are arranged at intervals along the length direction of the erected road surface; the bottom of the fence 500 protrudes downward with insertion bars, and the insertion bars are movably inserted into the jack holes. In this way, through the cooperation between the insertion bars and the jack holes, it is convenient to install the fence 500 on the inclined section 100 and the middle section 300.

[0042] A docking interval is provided between adjacent fences 500. A fixed column 400 is provided in the docking interval. A connecting sleeve 401 that moves up and down along the column 400 is provided on the column 400. The connecting sleeve 401 has a connecting section arranged on the side facing the fence 500; connecting blocks 501 arranged facing the docking interval are respectively provided on both sides of the fence 500. A connecting groove with an open top is provided on the connecting section, and the connecting blocks 501 are inserted into the connecting groove from top to bottom.

[0043] After the insertion bars of the fence 500 are inserted into the jack holes, the connecting blocks 501 are embedded in the connecting grooves in the connecting sections. Through the cooperation between the connecting blocks 501 and the connecting sections, the height of the fence 500 can be adjusted, and the installation structure of the fence 500 is also made more stable.

[0044] In this embodiment, a plurality of intermediate steel plates are laid on the top of the middle section 300. The plurality of intermediate steel plates are sequentially butted and arranged along the length direction of the middle section 300, and the intermediate steel plates are arranged across the middle section 300 along the width direction; a plurality of inclined steel plates 600 are laid on the top of the inclined section 100. The plurality of inclined steel plates 600 are sequentially butted and arranged along the length direction of the inclined section 100, and the inclined steel plates 600 are arranged across the inclined section 100 along the width direction; the plurality of intermediate steel plates and the plurality of inclined steel plates 600 form the erected road surface.

[0045] By laying the intermediate steel plates and the inclined steel plates 600, the entire erected road surface can be made flatter, which is convenient for vehicles to drive, and can also better support the vehicles.

[0046] A plurality of raised strips 601 are provided on the top of the inclined steel plate 600. The plurality of raised strips 601 are arranged at intervals along the length direction of the inclined section 100, and the raised strips 601 extend along the width direction of the inclined section 100; the raised strips 601 have a raised surface arranged upward and in an arc shape, and a plurality of recessed groove strips 602 are provided on the raised surface. The recessed groove strips 602 extend along the length direction of the raised strips 601, and the plurality of recessed groove strips 602 are arranged at intervals along the arc bending direction of the raised surface.

[0047] By arranging the raised strips 601, the frictional force when the vehicle travels in the inclined section 100 can be increased. During the process of the vehicle's tires rolling over the raised strips 601, through the scraping with the openings of the groove strips 602, the adhesives on the tires can be more effectively scraped off, preventing them from falling onto the middle section 300 or falling into the construction space 301.

[0048] In this embodiment, two guide rails 103 arranged along the road extension are provided on the erection section 200, and the two guide rails 103 are arranged at intervals; side frames extending downward are respectively provided on both sides of the inclined section 100, and track wheels 104 are provided on the side frames; when moving the inclined section 100, the track wheels 104 abut on the guide rails 103 and move along the guide rails 103.

[0049] Two detachable chucks are provided on the guide rails 103. After the end hydraulic rod 102 supports the docking section from bottom to top, the two chucks are clamped on the guide rails 103 and are respectively located on both sides of the track wheels 104 to restrict the track wheels 104 from moving along the guide rails 103.

[0050] In this way, when arranging the bridge body, the track wheels 104 can be used to move on the guide rails 103 to drive the movement of the entire bridge body, and the bridge body can be better arranged. After a certain construction section 201 is constructed, the guide rails 103 can be directly laid to move the bridge body to the next construction section 201.

[0051] Of course, it is also possible to move the bridge body to the construction section 201 by setting a carrier vehicle at the bottom of the bridge body and using the movement of the carrier vehicle. On the construction section 201, the cooperation of the track wheels 104 and the guide rails 103 can be used to realize the fine adjustment of the position of the bridge body, etc.

[0052] The upper end of the inclined section 100 and the end of the middle section 300 are arranged in a hinged manner through a hinge shaft, and a torsion spring for driving the inclined section 100 to swing downward and reset relative to the middle section 300 is provided on the hinge shaft; an inclined hydraulic rod is provided at the end of the middle section 300, and the inclined hydraulic rod is connected to the inclined section 100, and the inclined section 100 is driven to swing up and down relative to the middle section 300 through the telescopic movement of the inclined hydraulic rod.

[0053] When moving the bridge body, the inclined hydraulic rod can be used to swing the inclined section 100 upward to prevent it from contacting the road, so that the bridge body can be moved. After the bridge body is moved to the construction section 201, the inclined hydraulic rod is used to drive the inclined section 100 to swing downward so that its lower end abuts on the erection section 200 of the road.

[0054] In this embodiment, the lower end of the inclined section 100 has a pressing section 101, and the bottom of the pressing section 101 has a pressing surface that is flat and presses against the erection section 200 from top to bottom; the pressing surface is recessed upward to form a recessed groove 1011, the bottom of the recessed groove 1011 has a top surface, and both sides of the recessed groove 1011 have side surfaces.

[0055] A transverse bar 700 is fixedly provided on the erection section 200. Both sides of the erection section 200 have elastic surfaces, and side elastic layers 702 are covered on the elastic surfaces. The top of the transverse bar 700 is recessed downward and has an embedding groove 701; along the direction from top to bottom, the side surfaces are arranged obliquely away from the recessed groove 1011, and the elastic surfaces are arranged obliquely in the same direction as the side surfaces.

[0056] The recessed groove 1011 is provided with an elastic strip 1012. The upper end of the elastic strip 1012 is butted against the top surface of the recessed groove 1011, and the lower end of the elastic strip 1012 extends downward; the transverse bar 700 is embedded in the recessed groove 1011, the side surfaces press against the side elastic layers 702, and the side elastic layers 702 are in a compressed state; the elastic strip 1012 is embedded in the embedding groove 701, the lower end of the elastic strip 1012 presses against the bottom of the embedding groove 701, and there is an elastic interval between the top of the transverse bar 700 and the top surface, and the elastic strip 1012 is in an elastically compressed state.

[0057] After the pressing surface of the pressing section 101 presses against the erection section 200, the transverse bar 700 is embedded in the recessed groove 1011 from bottom to top, the side elastic layers 702 press against the side surfaces, the elastic strip 1012 is embedded in the embedding groove 701, and both the side elastic layers 702 and the elastic strip 1012 are in a compressed state. In this way, when the vehicle runs over the pressing section 101, through the elastic buffering of the side elastic layers 702 and the elastic strip 1012, it is avoided that the vehicle pushes the pressing section 101 to move or generates a large vibration.

[0058] Secondly, along the direction from top to bottom, the side surfaces are arranged obliquely away from the recessed groove 1011, and the elastic surfaces are arranged obliquely in the same direction as the side surfaces. In this way, when the vehicle is running on the inclined section 100, the horizontal force generated by the gravity of the vehicle can be better elastically buffered, the horizontal pressing ability of the pressing section 101 is enhanced, the vibration is reduced, the dislocation movement of the pressing section 101 is avoided, and the stable balance and vibration reduction of the entire bridge body are maintained.

[0059] In this embodiment, the upper part of the concave groove 1011 has an upper groove, an elastic spacer is located in the upper groove, and the elastic strip 1012 has an upper section located in the upper groove; a plurality of side wall grooves 1013 are provided on the inner side wall of the upper groove, and the plurality of side wall grooves 1013 are arranged in a circumferential manner along the upper groove; the upper section is in a compressed state and is compressed and extruded towards the inner side wall of the upper groove, and the outer periphery of the upper section is embedded in the side wall groove 1013 and presses against the inner side wall of the upper groove.

[0060] In this way, the elastic strip 1012 can be stably compressed and deformed between the transverse strip 700 and the pressing section 101, which not only enhances the connection stability between the two, but also can better buffer the horizontal force brought by the vehicle gravity. Secondly, through the multi-layer nesting of the concave groove 1011, the embedding groove 701, etc., and the action of the side elastic layer 702 and the elastic strip 1012, a multi-layer nested elastic effect can be achieved, achieving a better buffering effect.

[0061] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rapid prefabricated self-erecting bridge for road construction, characterized in that, A bridge body erected and arranged along the extension direction of the road. The bridge body includes an intermediate section extending along the front-back direction of the road and spanning above the construction section of the road, and two inclined sections. The road has erection sections distributed at both ends of the construction section, and the two inclined sections are respectively arranged at both ends of the intermediate section; along the direction of extending downward from the end of the intermediate section to the road, the inclined sections are arranged to incline downward away from the intermediate section. The upper end of the inclined section is butted against the end of the intermediate section, and the lower end of the inclined section abuts against the erection section. A relatively fixed integral structure is formed between the two inclined sections and the intermediate section; the top of the intermediate section and the tops of the two inclined sections form a continuous erection road surface for vehicles to drive on, and the bottom of the intermediate section and the bottoms of the two inclined sections enclose a construction space for workers to operate, and the construction space is located above the construction section. A plurality of intermediate hydraulic rods are provided at the bottom of the intermediate section, and the plurality of intermediate hydraulic rods support the intermediate section from bottom to top; the upper end of the inclined section forms a butting section, the butting section is butted against the end of the intermediate section, and an end hydraulic rod is supported at the bottom of the butting section, and the end hydraulic rod supports the inclined section from bottom to top. A plurality of detachable fences are respectively provided on both sides of the erection road surface, and the plurality of fences are arranged at intervals in sequence along the length direction of the erection road surface. Sockets are respectively provided on both sides of the inclined section and both sides of the intermediate section, and the sockets are arranged at intervals along the length direction of the erection road surface; the bottom of the fence protrudes downward with insertion strips, and the insertion strips are movably inserted into the sockets. A docking interval is provided between adjacent fences, a fixedly arranged upright post is provided in the docking interval, a connecting sleeve that moves up and down along the upright post is provided on the upright post, and the connecting sleeve has a connecting section arranged toward the side of the fence; connecting blocks arranged toward the docking interval are respectively provided on both sides of the fence, a connecting groove with an open top is provided on the connecting section, and the connecting blocks are inserted into the connecting groove from top to bottom.

2. The quick-assembly self-erecting bridge for road construction according to claim 1, wherein A plurality of intermediate steel plates are laid on the top of the intermediate section, and the plurality of intermediate steel plates are butted and arranged in sequence along the length direction of the intermediate section, and the intermediate steel plates span along the width direction of the intermediate section. A plurality of inclined steel plates are laid on the top of the inclined section, and the plurality of inclined steel plates are butted and arranged in sequence along the length direction of the inclined section, and the inclined steel plates span along the width direction of the inclined section; the plurality of intermediate steel plates and the plurality of inclined steel plates form the erection road surface.

3. The quick-assembly self-erecting bridge for road construction according to claim 2, characterized in that, A plurality of raised strips are provided on the top of the inclined steel plate, and the plurality of raised strips are arranged at intervals along the length direction of the inclined section, and the raised strips extend along the width direction of the inclined section; the raised strips have a raised surface arranged upward and in an arc shape, and a plurality of recessed groove strips are provided on the raised surface, the recessed groove strips extend along the length direction of the raised strip, and the plurality of recessed groove strips are arranged at intervals along the arc bending direction of the raised surface.

4. The rapid prefabricated self-erecting bridge for road construction according to any one of claims 1 to 3, characterized in that There are two guide rails arranged along the extension of the road on the erection section, and the two guide rails are arranged at intervals; on both sides of the inclined section, there are side frames extending downward, and track wheels are arranged on the side frames; when moving the inclined section, the track wheels abut against the guide rails and move along the guide rails. There are two detachable chucks arranged on the guide rails. When the end hydraulic rod supports the docking section from bottom to top, the two chucks are clamped on the guide rails and are respectively located on both sides of the track wheels to restrict the track wheels from moving along the guide rails.

5. The rapid assembly self-erecting bridge for road construction according to any one of claims 1 to 3, characterized in that, The upper end of the inclined section is hinged to the end of the middle section through a hinge shaft, and a torsion spring for driving the inclined section to swing downward and reset relative to the middle section is arranged on the hinge shaft; an inclined hydraulic rod is arranged at the end of the middle section, and the inclined hydraulic rod is connected to the inclined section. By the telescopic movement of the inclined hydraulic rod, the inclined section is driven to swing up and down relative to the middle section.

6. The rapid assembly self-erecting bridge for road construction according to any one of claims 1 to 3, characterized in that The lower end of the inclined section has a pressing section, and the bottom of the pressing section has a pressing surface that is flat and presses against the erection section from top to bottom; the pressing surface is recessed upward to form a recessed groove, the bottom of the recessed groove has a top surface, and both sides of the recessed groove have side surfaces. A transverse bar is fixedly arranged on the erection section. Both sides of the erection section have elastic surfaces, and side elastic layers are covered on the elastic surfaces. The top of the transverse bar is recessed downward and has an embedding groove; along the direction from top to bottom, the side surface is inclined away from the recessed groove, and the elastic surface is inclined in the same direction as the side surface. An elastic strip is arranged in the recessed groove. The upper end of the elastic strip is butted against the top surface of the recessed groove, and the lower end of the elastic strip extends downward; the transverse bar is embedded in the recessed groove, the side surface presses against the side elastic layer, and the side elastic layer is in a compressed state. The elastic strip is embedded in the embedding groove, the lower end of the elastic strip presses against the bottom of the embedding groove, and there is an elastic interval between the top of the transverse bar and the top surface, and the elastic strip is in an elastically compressed state.

7. The quickly assembled self-erecting bridge for road construction according to claim 6, characterized in that, The upper part of the recessed groove has an upper groove, the elastic interval is located in the upper groove, and the elastic strip has an upper section located in the upper groove; a plurality of side wall grooves are arranged on the inner side wall of the upper groove, and the plurality of side wall grooves are arranged in a circumferential manner around the upper groove. The upper section is in a compressed state and is compressed and extruded toward the inner side wall of the upper groove. The outer periphery of the upper section is embedded in the side wall groove and presses against the inner side wall of the upper groove.

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