Concrete pouring equipment for large-span stiff skeleton arch bridge

Abstract

The application relates to the technical field of concrete pouring, and discloses a large-span stiff skeleton arch bridge concrete pouring equipment, which comprises a fixing frame, pouring mechanisms and moving mechanisms are arranged on the outer sides of the fixing frame respectively, the pouring mechanism comprises a storage tank, an L-shaped pipeline is fixedly connected to the top end of the storage tank, a conveying pipeline is fixedly connected to the end of the L-shaped pipeline away from the storage tank, and a bearing is fixedly connected to the inner wall of the storage tank. The large-span stiff skeleton arch bridge concrete pouring equipment can convey concrete into the storage tank through the conveying pipeline and the L-shaped pipeline, the driving motor drives the rotating rod to rotate, and the rotating rod drives the spiral stirring rod to rotate, so that the concrete in the storage tank can be continuously stirred, the length of the large-span stiff skeleton arch bridge pile foundation is relatively long, the concrete in the concrete pouring pipeline is prone to caking, the pouring is not uniform, and the service life of the large-span stiff skeleton arch bridge is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete pouring, in particular to a large-span stiff skeleton arch bridge concrete pouring equipment. BACKGROUND

[0002] Concrete pouring refers to pouring mixed concrete into a mold, which is usually used in pile foundation construction in building engineering. In the construction process of a stiff skeleton arch bridge, a concrete transport vehicle is used to directly transport concrete to the construction site, and then a pumping pouring and continuous pouring method is used to pour concrete.

[0003] At present, the pouring device can only facilitate pouring at both ends of the large-span stiff skeleton arch bridge pile foundation, and the length of the large-span stiff skeleton arch bridge pile foundation is relatively long, so it is difficult to pour at the middle part. When the concrete in the concrete transport vehicle is transported to the middle part of the large-span stiff skeleton arch bridge pile foundation, the concrete in the concrete pouring pipeline is prone to clumping, the pouring is not uniform, the pouring quality is poor, and the quality and service life of the large-span stiff skeleton arch bridge are reduced. SUMMARY

[0004] The purpose of the present application is to provide a large-span stiff skeleton arch bridge concrete pouring equipment to solve the problems raised in the background.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme: a large-span stiff skeleton arch bridge concrete pouring equipment, comprising a fixing frame, a pouring mechanism and a moving mechanism are arranged on the outer side of the fixing frame respectively;

[0006] The pouring mechanism comprises a storage tank, an L-shaped pipeline is fixedly connected to the top end of the storage tank, a conveying pipeline is fixedly connected to the end of the L-shaped pipeline away from the storage tank, a bearing is fixedly connected to the inner wall of the storage tank, the inner ring of the bearing is fixedly connected to a rotating rod, a supporting plate is fixedly connected to the top end of the storage tank, a driving motor is fixedly connected to the left side of the supporting plate, the output end of the driving motor is fixedly connected to the top end of the rotating rod, a spiral stirring rod is fixedly connected to the bottom end of the rotating rod, a hopper is fixedly connected to the bottom end of the storage tank, a discharge pipeline is fixedly connected to the bottom end of the hopper, a telescopic pipeline is fixedly connected to the bottom end of the discharge pipeline, a sliding plate is fixedly connected to the bottom end of the telescopic pipeline, two hydraulic cylinders are fixedly connected to the bottom end of the fixing frame, and the telescopic end of each hydraulic cylinder is fixedly connected to the upper surface of the sliding plate;

[0007] The moving mechanism comprises two fixed plates, the upper surface of each fixed plate is provided with a sliding groove, the inside of each sliding groove is slidably connected with three electric pulleys, the outer surface of the fixed frame is fixedly connected with four fixed rods, the ends of the two groups of fixed rods away from each other are fixedly connected with sliding blocks, the inner wall of each sliding block is fixedly connected with the top end of the electric pulley, the inner wall of each sliding groove is fixedly connected with a first limiting plate, the bottom surface of each fixed plate is fixedly connected with a second limiting plate, the inner wall of each sliding block is provided with a groove, the outer surface of each second limiting plate is in contact with the inner wall of the groove, and the outer surface of each first limiting plate is in contact with the inner wall of the sliding block.

[0008] Preferably, the outer surface of the L-shaped pipeline is fixedly connected with a sealing ring, and the bottom end of the sealing ring is fixedly connected with the top end of the storage tank.

[0009] Preferably, the outer surface of each hydraulic cylinder is fixedly connected with a dustproof shell, and the upper surface of each dustproof shell is fixedly connected with the bottom end of the fixed frame.

[0010] Preferably, the bottom surface of each dustproof shell is fixedly connected with a protective sleeve, and the bottom end of each protective sleeve is fixedly connected with the upper surface of the sliding plate.

[0011] Preferably, the outer surface of each protective sleeve is fixedly connected with a reinforcing plate, and the bottom surface of each reinforcing plate is fixedly connected with the upper surface of the sliding plate.

[0012] Preferably, the inner wall of each reinforcing plate is threadedly connected with four reinforcing bolts, and the inner wall of each group of reinforcing bolts is threadedly connected with the inner wall of the sliding plate.

[0013] Preferably, the outer surface of the driving motor is fixedly connected with a protection box, and the bottom surface of the protection box is fixedly connected with the top end of the storage tank.

[0014] Preferably, the outer surface of the discharge pipeline is fixedly connected with a reinforcing ring, and the inner wall of the reinforcing ring is fixedly connected with the outer surface of the telescopic pipeline.

[0015] Preferably, the outer surface of each group of electric pulleys is fixedly connected with two fixed rings, and the top end of each group of fixed rings is fixedly connected with the inner wall of the sliding block.

[0016] Preferably, the outer surface of each group of fixed rods is fixedly connected with two limiting rings, and the ends of each group of limiting rings away from each other are fixedly connected with the side of the two sliding blocks close to each other.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] The application can transport concrete into the storage tank through the conveying pipeline and the L-shaped pipeline, drive the rotating rod to rotate through the driving motor, and then drive the spiral stirring rod to rotate, so that the concrete in the storage tank can be continuously stirred, the length of the large-span stiff skeleton arch bridge pile foundation is effectively avoided, the middle part is difficult to pour, when the concrete in the concrete transport vehicle is transported to the middle part of the large-span stiff skeleton arch bridge pile foundation, the concrete in the concrete pouring pipeline is easy to agglomerate, the pouring is not uniform, the pouring quality is poor, which can easily lead to the problems of reducing the quality and service life of the large-span stiff skeleton arch bridge, the sliding plate is driven to move downward through the extension end of the hydraulic cylinder, and then one end of the telescopic pipeline is pulled to move downward, so that the telescopic pipeline is extended downward, the concrete in the storage tank can be accurately poured, the problem of external spraying during concrete pouring is effectively prevented, the concrete resource is wasted and the external environment is polluted, the sliding block can be moved in the sliding groove of the fixed plate through the electric pulley, the position of the pouring equipment can be adjusted, the use effect of the device is enhanced, and the pouring efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic view of the whole large-span stiff skeleton arch bridge concrete pouring equipment of the application.

[0020] Figure 2 It is a structure schematic view of the conveying pipeline of the application.

[0021] Figure 3 It is a structure schematic view of the L-shaped pipeline of the application.

[0022] Figure 4 It is a structure schematic view of the spiral stirring rod of the application.

[0023] Figure 5 It is a structure schematic view of the telescopic pipeline of the application.

[0024] Figure 6 It is a structure schematic view of the hydraulic cylinder of the application.

[0025] Figure 7 It is a structure schematic view of the sliding block of the application.

[0026] Figure 8 It is a structure schematic view of the recess of the application.

[0027] Figure 9 It is a structure schematic view of the electric pulley of the application.

[0028] Wherein: 1, fixed frame; 2, perfusion mechanism; 201, storage tank; 202, conveying pipeline; 203, L-shaped pipeline; 204, sliding plate; 205, support plate; 206, drive motor; 207, hopper; 208, discharge pipeline; 209, bearing; 210, rotating rod; 211, spiral stirring rod; 212, telescopic pipeline; 213, hydraulic cylinder; 3, moving mechanism; 301, fixed plate; 302, sliding block; 303, fixed rod; 304, first limiting plate; 305, second limiting plate; 306, sliding chute; 307, groove; 308, electric pulley; 4, protection box; 5, sealing ring; 6, protective sleeve; 7, reinforcing plate; 8, dustproof housing; 9, reinforcing ring; 10, reinforcing bolt; 11, limiting ring; 12, fixed ring. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] Embodiment one

[0031] Please refer to Figures 1-9 A large-span steel skeleton arch bridge concrete pouring equipment, including fixed frame 1, the outer side of fixed frame 1 is provided with perfusion mechanism 2 and moving mechanism 3 respectively, perfusion mechanism 2 includes storage tank 201, the top of storage tank 201 is fixedly connected with L-shaped pipeline 203, one end of L-shaped pipeline 203 away from storage tank 201 is fixedly connected with conveying pipeline 202, the inner wall of storage tank 201 is fixedly connected with bearing 209, the inner ring of bearing 209 is fixedly connected with rotating rod 210, the top of storage tank 201 is fixedly connected with support plate 205, the left side of support plate 205 is fixedly connected with drive motor 206, the output end of drive motor 206 is fixedly connected with the top of rotating rod 210, the bottom of rotating rod 210 is fixedly connected with spiral stirring rod 211, the bottom of storage tank 201 is fixedly connected with hopper 207, the bottom of hopper 207 is fixedly connected with discharge pipeline 208, the bottom of discharge pipeline 208 is fixedly connected with telescopic pipeline 212, the bottom of telescopic pipeline 212 is fixedly connected with sliding plate 204, the bottom of fixed frame 1 is fixedly connected with two hydraulic cylinders 213, the telescopic end of each hydraulic cylinder 213 is fixedly connected with the upper surface of sliding plate 204;

[0032] The outer surface of the L-shaped pipeline 203 is fixedly connected with a sealing ring 5, the bottom end of the sealing ring 5 is fixedly connected with the top end of the storage tank 201, through the sealing ring 5, the L-shaped pipeline 203 and the storage tank 201 can be sealed, and the problem of leakage during concrete conveying can be effectively prevented;

[0033] The outer surface of each hydraulic cylinder 213 is fixedly connected with a dustproof shell 8, the upper surface of each dustproof shell 8 is fixedly connected with the bottom end of the fixed frame 1, through the dustproof shell 8, the hydraulic cylinder 213 can be protected, has strong protection effect, and effectively avoids interference from the external environment during use;

[0034] The bottom surface of each dustproof shell 8 is fixedly connected with a protective sleeve 6, the bottom end of each protective sleeve 6 is fixedly connected with the upper surface of the sliding plate 204, through the protective sleeve 6, the telescopic end of the hydraulic cylinder 213 can be protected, has strong protection effect, and effectively prevents damage from the external environment during work;

[0035] The outer surface of each protective sleeve 6 is fixedly connected with a reinforcing plate 7, the bottom surface of each reinforcing plate 7 is fixedly connected with the upper surface of the sliding plate 204, through the reinforcing plate 7, the protective sleeve 6 and the sliding plate 204 can be reinforced, the stability of the device is enhanced, and the problem of swinging and shaking during work is effectively avoided;

[0036] The inner wall of each reinforcing plate 7 is threadedly connected with four reinforcing bolts 10, the inner wall of each group of reinforcing bolts 10 is threadedly connected with the inner wall of the sliding plate 204, through the reinforcing bolts 10, the reinforcing plate 7 and the sliding plate 204 can be reinforced, and the problem of position deviation and instability during use is effectively prevented;

[0037] The outer surface of the driving motor 206 is fixedly connected with a protection box 4, the bottom surface of the protection box 4 is fixedly connected with the top end of the storage tank 201, through the protection box 4, the driving motor 206 can be protected, the problem of reduced service life caused by external influence during work is effectively avoided;

[0038] The outer surface of the discharge pipeline 208 is fixedly connected with a reinforcing ring 9, the inner wall of the reinforcing ring 9 is fixedly connected with the outer surface of the telescopic pipeline 212, through the reinforcing ring 9, the discharge pipeline 208 and the telescopic pipeline 212 can be reinforced, and shaking and deviation during concrete pouring can be prevented.

[0039] The specific implementation of the embodiment is: first, the conveying pipeline 202 is connected with the concrete conveying pump on the external concrete transport vehicle, when it is necessary to perform pouring work on the pile foundation of the large-span stiff skeleton arch bridge, first, the concrete in the concrete transport vehicle is conveyed into the conveying pipeline 202 by the concrete conveying pump, the concrete conveying pump continuously conveys the concrete along the pipeline by means of a piston or extrusion, etc., in the pouring of the large-span stiff skeleton arch bridge, it can convey the concrete from the mixing station to the pouring position at a long distance, for some arch bridge parts which are relatively high from the ground or are far away from the concrete mixing site, the conveying pump can push the concrete at a certain pressure, a large amount of concrete can be conveyed in a short time, the continuity of the pouring construction is ensured, which helps to improve the construction progress of the entire arch bridge, then the concrete is conveyed into the L-shaped pipeline 203, the inner lining layer of the L-shaped pipeline 203 is made of wear-resistant rubber material, which can effectively reduce the wear and blockage of the pipeline wall surface, ensure the quality of concrete conveying, and the reinforcing layer inside is made of multiple layers of steel wires and epoxy resin materials, which can withstand very high pressure and tension, ensuring that no rupture or fracture occurs during the conveying of concrete, and the outer surface is made of natural or synthetic rubber material, which has multiple properties such as anti-aging, corrosion resistance and anti-ultraviolet radiation, ensuring the durability and service life of the conveying pipe, and then the concrete is conveyed into the storage tank 201, and then falls into the discharge pipeline 208 through the hopper 207, and then is discharged downward, so as to be able to pour and construct the pile foundation of the large-span stiff skeleton arch bridge, and at the same time of pouring and constructing the pile foundation of the large-span stiff skeleton arch bridge, the output end of the driving motor 206 is made to rotate, the rotating rod 210 inside the bearing 209 is made to rotate, so as to be able to drive the spiral stirring rod 211 inside the storage tank 201 to rotate, thereby the concrete in the storage tank 201 can be continuously stirred, the concrete inside the storage tank 201 can always be kept in a uniform state, the applicability of the device is enhanced, which can avoid the problem that the length of the pile foundation of the large-span stiff skeleton arch bridge is relatively long, and the middle part is difficult to pour, when the concrete in the concrete transport vehicle is conveyed to the middle part of the pile foundation of the large-span stiff skeleton arch bridge, the concrete in the concrete pouring pipeline is easy to be caked, the pouring is not uniform, the pouring quality is poor, which can easily lead to the reduction of the quality and service life of the large-span stiff skeleton arch bridge, and by making the extension end of the hydraulic cylinder 213 extend during the pouring process, the sliding plate 204 is made to descend, and then one end of the telescopic pipeline 212 is made to descend, the telescopic pipeline 212 is lengthened downward, which is convenient for precise pouring of the concrete in the storage tank 201, effectively prevents the concrete from being sprayed outward during the pouring process, and causes the problem of waste of concrete resources and pollution of the external environment.

[0040] Embodiment two

[0041] Please refer to Figures 1-9The moving mechanism 3 comprises two fixed plates 301, the upper surface of each fixed plate 301 is provided with a sliding groove 306, the inside of each sliding groove 306 is slidably connected with three electric pulleys 308, the outer surface of the fixed frame 1 is fixedly connected with four fixed rods 303, the ends of the two groups of fixed rods 303 away from each other are fixedly connected with sliding blocks 302, the inner wall of each sliding block 302 is fixedly connected with the top end of the electric pulley 308, the inner wall of each sliding groove 306 is fixedly connected with a first limiting plate 304, the bottom surface of each fixed plate 301 is fixedly connected with a second limiting plate 305, the inner wall of each sliding block 302 is provided with a groove 307, the outer surface of each second limiting plate 305 is in contact with the inner wall of the groove 307, and the outer surface of each first limiting plate 304 is in contact with the inner wall of the sliding block 302.

[0042] The outer surface of each group of electric pulleys 308 is fixedly connected with two fixed rings 12, the top end of each group of fixed rings 12 is fixedly connected with the inner wall of the sliding block 302, the electric pulley 308 and the sliding block 302 can be fixed through the fixed ring 12, so that the position deviation problem of the electric pulley 308 and the sliding block 302 in the moving process is avoided.

[0043] The outer surface of each group of fixed rods 303 is fixedly connected with two limiting rings 11, the ends of each group of limiting rings 11 away from each other are fixedly connected with the sides of the two sliding blocks 302 close to each other, and the position of the fixed rod 303 can be limited through the limiting ring 11, so that the fixed limiting effect is achieved.

[0044] The specific implementation of the embodiment is that: first, the two fixed plates 301 are fixedly installed on the large-span stiff skeleton arch bridge, then the sliding block 302 is installed on the fixed plate 301, the electric pulley 308 slides in the sliding groove 306, so that the pouring equipment can be moved, and the sliding block 302 can always keep stable translation through the first limiting plate 304, the second limiting plate 305 and the groove 307 in the moving process, the use effect of the device is enhanced, the position of the pouring equipment can be adjusted, the use effect of the device is enhanced, and the pouring efficiency is improved.

[0045] Example three

[0046] Please refer to Figures 1-9The specific implementation of the embodiment is: first, the conveying pipeline 202 is connected with the concrete conveying pump on the external concrete transport vehicle, when it is necessary to perform pouring work on the pile foundation of the large-span stiff skeleton arch bridge, first, the concrete in the concrete transport vehicle is conveyed into the conveying pipeline 202 by the concrete conveying pump, the concrete conveying pump continuously conveys the concrete along the pipeline by means of a piston or extrusion, etc., in the pouring of the large-span stiff skeleton arch bridge, it can convey the concrete from the mixing station to the pouring position at a long distance, for some arch bridge parts which are relatively high from the ground or are far away from the concrete mixing site, the conveying pump can push the concrete at a certain pressure, a large amount of concrete can be conveyed in a short time, the continuity of the pouring construction is ensured, the construction progress of the whole arch bridge is improved, then the concrete is conveyed into the L-shaped pipeline 203, the inner lining layer of the L-shaped pipeline 203 is made of wear-resistant rubber material, which can effectively reduce the wear and blockage of the pipeline wall surface, ensure the quality of concrete conveying, and the reinforcing layer inside is made of multiple layers of steel wires and epoxy resin materials, which can withstand very high pressure and tension, to ensure that no rupture or fracture occurs during the conveying of concrete, and the outer surface is made of natural or synthetic rubber material, which has multiple properties such as anti-aging, corrosion resistance and anti-ultraviolet radiation, to ensure the durability and service life of the conveying pipe, and then the concrete is conveyed into the storage tank 201, and then falls into the discharge pipeline 208 through the hopper 207, and then is discharged downward, so as to be able to pour the large-span stiff skeleton arch bridge pile foundation, and at the same time of pouring the large-span stiff skeleton arch bridge pile foundation, the output end of the driving motor 206 is rotated to drive the rotating rod 210 inside the bearing 209 to rotate, so as to drive the spiral stirring rod 211 inside the storage tank 201 to rotate, thereby the concrete in the storage tank 201 can be continuously stirred, so that the concrete in the storage tank 201 always maintains a uniform state, enhancing the applicability of the device, which can avoid the problem that the length of the large-span stiff skeleton arch bridge pile foundation is relatively long, and the middle part is difficult to pour, when the concrete in the concrete transport vehicle is conveyed to the middle part of the large-span stiff skeleton arch bridge pile foundation, the concrete in the concrete pouring pipeline is easy to agglomerate, the pouring is not uniform, the pouring quality is poor, which can easily lead to the reduction of the quality and service life of the large-span stiff skeleton arch bridge, and by extending the telescopic end of the hydraulic cylinder 213 during pouring to drive the sliding plate 204 to descend, the one end of the telescopic pipeline 212 can be pulled down to extend the telescopic pipeline 212 downward, which facilitates the accurate pouring of the concrete in the storage tank 201, effectively prevents the concrete from being sprayed outward during pouring, causing waste of concrete resources and pollution of the external environment, by fixing the two fixed plates 301 on the large-span stiff skeleton arch bridge, and then installing the sliding block 302 on the fixed plate 301, the electric pulley 308 can slide in the sliding groove 306, thereby driving the pouring equipment to move,And through the first limiting plate 304, the second limiting plate 305 and the groove 307, the sliding block 302 can keep stable translation during the moving process, thereby enhancing the use effect of the device, facilitating the position adjustment of the perfusion equipment, enhancing the use effect of the device and improving the perfusion efficiency.

[0047] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0048] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for the purpose of limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A concrete pouring device for a long-span stiffened arch bridge, comprising a fixing frame (1), characterized in that: The outer side of the fixed frame (1) is respectively provided with an injection mechanism (2) and a moving mechanism (3); The filling mechanism (2) includes a storage tank (201), an L-shaped pipe (203) fixedly connected to the top of the storage tank (201), a conveying pipe (202) fixedly connected to the end of the L-shaped pipe (203) away from the storage tank (201), a bearing (209) fixedly connected to the inner wall of the storage tank (201), a rotating rod (210) fixedly connected to the inner ring of the bearing (209), a support plate (205) fixedly connected to the top of the storage tank (201), a drive motor (206) fixedly connected to the left side of the support plate (205), and the output end of the drive motor (206) connected to the rotating rod. The top end of the rotating rod (210) is fixedly connected to a spiral stirring rod (211), the bottom end of the storage tank (201) is fixedly connected to a funnel (207), the bottom end of the funnel (207) is fixedly connected to a discharge pipe (208), the bottom end of the discharge pipe (208) is fixedly connected to a telescopic pipe (212), the bottom end of the telescopic pipe (212) is fixedly connected to a sliding plate (204), and the bottom end of the fixed frame (1) is fixedly connected to two hydraulic cylinders (213). The telescopic end of each hydraulic cylinder (213) is fixedly connected to the upper surface of the sliding plate (204). The moving mechanism (3) includes two fixed plates (301), each fixed plate (301) having a groove (306) on its upper surface. Each groove (306) has three electric pulleys (308) slidably connected inside it. The outer surface of the fixed frame (1) is fixedly connected to four fixed rods (303). Each set of fixed rods (303) has a sliding block (302) fixedly connected to one end of each set of fixed rods (303) at a distance from each other. The inner wall of each sliding block (302) is connected to the electric pulley (308). The top of each of the 8) is fixedly connected, and a first limiting plate (304) is fixedly connected to the inner wall of each of the sliding grooves (306). A second limiting plate (305) is fixedly connected to the bottom surface of each of the fixed plates (301). A groove (307) is opened on the inner wall of each of the sliding blocks (302). The outer surface of each of the second limiting plates (305) is in contact with the inner wall of the groove (307). The outer surface of each of the first limiting plates (304) is in contact with the inner wall of the sliding block (302).

2. The concrete pouring equipment for a large-span stiffened arch bridge according to claim 1, characterized in that: A sealing ring (5) is fixedly connected to the outer surface of the L-shaped pipe (203), and the bottom end of the sealing ring (5) is fixedly connected to the top end of the storage tank (201).

3. The concrete pouring equipment for a large-span stiffened arch bridge according to claim 1, characterized in that: Each of the hydraulic cylinders (213) has a dustproof shell (8) fixedly connected to its outer surface, and the upper surface of each of the dustproof shells (8) is fixedly connected to the bottom end of the fixing frame (1).

4. The concrete pouring equipment for a large-span stiffened arch bridge according to claim 3, characterized in that: Each of the dustproof housings (8) has a protective sleeve (6) fixedly connected to its bottom surface, and the bottom end of each of the protective sleeves (6) is fixedly connected to the upper surface of the sliding plate (204).

5. The concrete pouring equipment for a large-span stiffened arch bridge according to claim 4, characterized in that: Each of the protective sleeves (6) has a reinforcing plate (7) fixedly connected to its outer surface, and the bottom surface of each of the reinforcing plates (7) is fixedly connected to the upper surface of the sliding plate (204).

6. The concrete pouring equipment for a large-span stiffened arch bridge according to claim 5, characterized in that: Each of the reinforcing plates (7) has four reinforcing bolts (10) threadedly connected to its inner wall, and the inner wall of each set of reinforcing bolts (10) is threadedly connected to the inner wall of the sliding plate (204).

7. The concrete pouring equipment for a large-span stiffened arch bridge according to claim 1, characterized in that: A protective box (4) is fixedly connected to the outer surface of the drive motor (206), and the bottom surface of the protective box (4) is fixedly connected to the top surface of the storage tank (201).

8. The concrete pouring equipment for a large-span stiffened arch bridge according to claim 1, characterized in that: A reinforcing ring (9) is fixedly connected to the outer surface of the discharge pipe (208), and the inner wall of the reinforcing ring (9) is fixedly connected to the outer surface of the telescopic pipe (212).

9. The concrete pouring equipment for a large-span stiffened arch bridge according to claim 1, characterized in that: Two fixing rings (12) are fixedly connected to the outer surface of each set of electric pulleys (308), and the top of each set of fixing rings (12) is fixedly connected to the inner wall of the sliding block (302).

10. The concrete pouring equipment for a large-span stiffened arch bridge according to claim 1, characterized in that: Two limiting rings (11) are fixedly connected to the outer surface of each set of fixed rods (303), and the ends of each set of limiting rings (11) that are far apart from each other are fixedly connected to the sides of the two sliding blocks (302) that are close to each other.

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