CN218813439U

CN218813439U - Air suction dredge for bridge construction

Info

Publication number: CN218813439U
Application number: CN202320128776.6U
Authority: CN
Inventors: 王旭; 樊建兴
Original assignee: Xian Highway Research Institute
Current assignee: Xian Highway Research Institute
Priority date: 2023-01-16
Filing date: 2023-01-16
Publication date: 2023-04-07
Anticipated expiration: 2033-01-16

Abstract

The utility model relates to a mud clearance technical field specifically is a bridge construction is with air suction dredge, clean the subassembly including Jiong style of calligraphy frame, mud storage tank, high-pressure centrifugal fan and silt, high-pressure centrifugal fan and mud storage tank all set up the outside at Jiong style of calligraphy frame, and high-pressure centrifugal fan's induction port communicates with the inboard of Jiong style of calligraphy frame, and high-pressure centrifugal fan's discharge gate communicates with mud storage tank, the silt cleans the subassembly and sets up the inboard at Jiong style of calligraphy frame and through coupling assembling and Jiong style of calligraphy frame swing joint; utilize Jiong style of calligraphy frame to connect high-pressure centrifugal fan, silt to clean subassembly and storage mud case for Jiong style of calligraphy frame is detained on mud, jiong style of calligraphy frame can utilize silt to clean the subassembly and clean the position near high-pressure centrifugal fan induction port in the removal process to silt, utilize high-pressure centrifugal fan to inhale mud in the storage mud case and accomplish the clearance to road surface mud afterwards, easy operation reduces work load, improves work efficiency.

Description

Air suction dredge for bridge construction

Technical Field

The utility model relates to a mud cleaning technical field specifically is an air suction dredge is used in bridge construction.

Background

In the process of bridge construction and construction, due to the influence of construction environment, construction contents such as piling or deep digging of foundation and the like are required during bridge construction and construction, a large amount of sludge is excavated and accumulated during construction due to abundant underground water, generally, in order to avoid environmental pollution and site occupation, the sludge is transported to a designated area through engineering vehicles, but the sludge is easy to flow on the road surface or construction facilities and other places after accumulation, so that the construction progress is influenced, and potential safety hazards also exist, if a blocking facility is built, the cost is increased, on the other hand, the sludge can not be effectively prevented from leaking, the requirement for timely clearing the sludge can not be met, the sludge is easy to scatter and accumulate on the road during transportation, road cleaning treatment is required at the moment, road slurry, mud blocks and the like are mainly cleared, and the influence of the sludge on the construction and the environment is reduced, when sludge is cleaned, for example, an air suction dredge for bridge construction disclosed by the authorized bulletin number of CN207685884U comprises a driving motor and a sludge outlet pipe, wherein the driving motor is rotatably connected with a connecting shaft through a motor shaft, a hollow external threaded pipe is fixedly arranged at the bottom of the connecting shaft, a sludge suction pipe is arranged in the hollow external threaded pipe, one end of the sludge suction pipe is connected with the sludge outlet pipe, a supporting plate is arranged on one side of the bottom of the driving motor and is used for crushing and mixing solid gravel and sludge in a hole, a high-pressure water pump and a water pipe are arranged on one side of the bottom of the driving motor, water is discharged to mix the crushed gravel and sludge to prevent blockage during suction, the technical scheme mainly crushes and mixes the solid gravel and sludge in the hole and mixes the solid gravel and sludge into slurry through fluid, the slurry is sucked in a later period, but before the operation process, workers still need to collect gravel, sludge and the like on a road surface, the fixed-point processing operation is difficult to move on the road surface and clear mud blocks and mud, the operation efficiency is low, the operation burden of workers is heavy, and the actual use requirement cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air suction dredge is used in bridge construction to it establishes to carry out the problem that fixed point processing mud again after collecting mud leads to work efficiency to hang down to carry out the mud clearance to carry out the bridge construction that has now and establish in solving among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a bridge construction is with air suction dredge which characterized in that: the device comprises a Jiong-shaped rack, a sludge storage tank, a high-pressure centrifugal fan and a sludge cleaning assembly, wherein the high-pressure centrifugal fan and the sludge storage tank are both arranged on the outer side of the Jiong-shaped rack, an air suction port of the high-pressure centrifugal fan is communicated with the inner side of the Jiong-shaped rack, a discharge port of the high-pressure centrifugal fan is communicated with the sludge storage tank, and the sludge cleaning assembly is arranged on the inner side of the Jiong-shaped rack and is movably connected with the Jiong-shaped rack through a connecting assembly 6253.

Further defined, the sludge sweeping assembly comprises a regulating plate, a first tensioning roller, a second tensioning roller, a conveying belt, a convex plate and a belt wheel transmission structure; the quantity of regulating plate is two, two the regulating plate sets up relatively, the regulating plate pass through coupling assembling with the top swing joint of Jiong style of calligraphy frame, first tensioning roller and second tensioning roller syntropy set up to first tensioning roller and second tensioning roller all set up between two regulating plates, first tensioning roller is located the top of second tensioning roller, and first tensioning roller is close to high-pressure centrifugal fan's induction port, pulley drive structure sets up on arbitrary regulating plate, and pulley drive structure is connected with first tensioning roller transmission, and first tensioning roller passes through the conveyer belt and is connected with second tensioning roller transmission, the quantity of flange is a plurality of, and is a plurality of flange is along the equidistant setting in week of conveyer belt, and the flange is connected with conveyer belt surface vertical to the flange sets up with first tensioning roller syntropy.

Further inject, band pulley transmission structure includes gear motor, action wheel and follows the driving wheel, gear motor's stiff end is connected with the regulating plate, and gear motor's output is connected with the action wheel, be connected with first tensioning roller from the driving wheel, the action wheel is connected with first tensioning roller transmission through following the driving wheel.

Further inject, coupling assembling includes connecting rod bearing structure and electric putter, electric putter's stiff end is connected with the top of Jiong style of calligraphy frame, and electric putter's flexible end is connected with the regulating plate, connecting rod bearing structure's one end is connected with the regulating plate, and connecting rod bearing structure's the other end is connected with the top of Jiong style of calligraphy frame.

Further inject, electric putter's quantity is two, two electric putter and regulating plate one-to-one set up, and electric putter's stiff end is located Jiong style of calligraphy frame and keeps away from the one end of high-pressure centrifugal fan, and electric putter's flexible end is located the one end that the regulating plate is close to high-pressure centrifugal fan.

Further inject, connecting rod bearing structure's quantity is four, four connecting rod bearing structure symmetry sets up in Jiong style of calligraphy frame relative both sides, and the homonymy connecting rod bearing structure syntropy sets up, connecting rod bearing structure's one end is located Jiong style of calligraphy frame and is close to the one end of high-pressure centrifugal fan, and connecting rod bearing structure's the other end is located the one end that high-pressure centrifugal fan was kept away from to the regulating plate, electric putter is located connecting rod bearing structure's the outside.

Further, one end, away from the high-pressure centrifugal fan, of the Jiong-shaped frame is provided with a connecting seat, and the connecting seat is located at the top of the Jiong-shaped frame.

Further limit, the connecting seat includes the bottom plate, sets up the riser and the enhancement post that is located the riser both sides at the bottom plate top perpendicularly, the top and the riser of strengthening the post are connected, and the other end and the bottom plate of strengthening the post are connected.

Further limiting, a connecting vertical groove is formed in the vertical plate, the reinforcing columns are located on two sides of the connecting vertical groove, and an opening of the connecting vertical groove faces back to the high-pressure centrifugal fan.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses utilize Jiong style of calligraphy frame to connect high-pressure centrifugal fan, silt cleans the subassembly and stores up the mud case, make Jiong style of calligraphy frame detain on mud, jiong style of calligraphy frame can utilize silt to clean the subassembly and clean the position that is close to high-pressure centrifugal fan induction port to silt at the removal in-process, utilize high-pressure centrifugal fan to inhale mud afterwards and accomplish the clearance of road surface mud and clear away in storing up the mud case, the operation is thus simple, the work load is reduced, and the work efficiency is improved.

2. The utility model discloses a be provided with the structure of mutually supporting such as connecting seat and regulating plate, the staff passes through the afterbody of connecting seat assembly at engineering work vehicle with this equipment, drag this equipment by engineering work vehicle and move on highway extending direction, in the removal process, it cleans the subassembly and removes towards the ground direction to promote regulating plate and silt by electric putter, clean the terminal position of subassembly by high-pressure centrifugal fan at silt and produce high-pressure suction, silt cleans the subassembly continuous with the mud piece on the highway, mud etc. is swept towards high-pressure centrifugal fan's direction, help high-pressure centrifugal fan is quick with the mud piece, mud emits into to storing up in the mud case, realize portable mud cleaning function, compare in the air suction dredge for the bridge construction of fixed point formula, it need not staff and collects the mud piece in advance, waste materials such as mud, effectively reduce staff's operating efficiency, and improve road decontamination, construction efficiency.

Drawings

Fig. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic diagram of the side view of the separated sludge storage tank and the high-pressure centrifugal fan of the present invention;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3 according to the present invention;

fig. 5 is a schematic view of a three-dimensional structure of the connecting seat of the present invention;

in the figure: 1. a connecting seat; 101. a vertical plate; 102. a reinforcement column; 103. connecting the vertical grooves; 2. jiong font frame; 3. a sludge storage tank; 4. a high pressure centrifugal fan; 5. a connecting rod support structure; 6. an adjusting plate; 7. an electric push rod; 8. a connecting plate; 9. a first tension roller; 10. a second tension roller; 11. a conveyor belt; 12. a convex plate; 13. a pulley drive structure; 14. a speed reducing motor.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides an embodiment: an air suction dredge for bridge construction comprises a Jiong-shaped rack 2, a mud storage tank 3, a high-pressure centrifugal fan 4, a connecting assembly and a mud cleaning assembly, wherein the high-pressure centrifugal fan 4 and the mud storage tank 3 are installed on the outer side of the Jiong-shaped rack 2, the mud cleaning assembly is installed on the inner side of the Jiong-shaped rack 2 through the connecting assembly, the mud cleaning assembly is used for cleaning mud and lifting the mud, the high-pressure centrifugal fan 4 is used for generating suction to collect the lifted mud through the suction and collect the collected mud in the mud storage tank 3, uniform treatment is facilitated, and the mud storage tank 3 is connected below the high-pressure centrifugal fan 4; further, in order to reduce the manual operation difficulty, a connecting seat 1 can be further arranged on the Jiong-shaped frame 2 and used for connecting an engineering operation vehicle, the Jiong-shaped frame 2 is driven by the engineering operation vehicle to move to remove and clean scattered or accumulated silt and mud blocks on the road surface, the construction safety is guaranteed, and the construction efficiency is improved.

Specifically, the connecting base 1 comprises a bottom plate connected with the Jiong-shaped frame 2, a vertical plate 101 vertically arranged at the top of the bottom plate and reinforcing columns 102 arranged at two sides of the vertical plate 101, wherein the reinforcing columns 102 are arranged at two sides of the vertical plate 101 and used for increasing the structural strength of the vertical plate 101, the top of each reinforcing column 102 is connected with the vertical plate 101, and the bottom of each reinforcing column 102 is connected with the bottom plate, so that the vertical plate 101, the reinforcing columns 102 and the bottom plate form a triangular structure; meanwhile, a connecting vertical groove 103 is formed in the vertical plate 101 and used for connecting engineering operation vehicles, in order to ensure that the vertical plate 101 is stably connected with the engineering operation vehicles, a connecting hole is formed in the vertical plate 101 and penetrates through the connecting vertical groove 103 in the vertical plate 101, a connecting block is arranged at the tail of the engineering operation vehicle and inserted into the connecting vertical groove 103, a bolt penetrates through the vertical plate 101 and the connecting block to achieve fastening connection of the Jiong font rack 2 and the tail of the engineering operation vehicle, and the engineering operation vehicle drives the Jiong font rack 2 to move along the extending direction of a road.

Referring to fig. 1, jiong-shaped rack 2 has a downward opening, jiong-shaped rack 2 has a Jiong-shaped structure in side view, a high-pressure centrifugal fan 4 is installed on the right side of Jiong-shaped rack 2, the number of the high-pressure centrifugal fans 4 is one or two or more, taking two as an example, the two high-pressure centrifugal fans 4 are arranged at the same height, a sludge storage tank 3 is installed on the side wall of Jiong-shaped rack 2, and the sludge storage tank 3 is located at the bottom of the high-pressure centrifugal fan 4 and is communicated with the high-pressure centrifugal fans 4, so that slurry sucked by the high-pressure centrifugal fans 4 can be blown into the sludge storage tank 3 for collection, an exhaust port is arranged at the top of the sludge storage tank 3, a filtering device is arranged on the exhaust port to prevent the slurry from scattering, and a discharge port is further arranged on the sludge storage tank 3, so that the materials in the sludge storage tank 3 can be cleaned conveniently.

An air suction port of the high-pressure centrifugal fan 4 is communicated with the inner side of the Jiong-shaped frame 2, and the sludge cleaning component is close to the air suction port of the high-pressure centrifugal fan 4, so that sludge can be conveniently sucked; the sludge cleaning assembly comprises adjusting plates 6, first tensioning rollers 9, second tensioning rollers 10, a conveyor belt 11, convex plates 12 and a belt wheel transmission structure 13, wherein the adjusting plates 6 are connected with Jiong type racks 2 through connecting assemblies, the number of the adjusting plates 6 is two, the two adjusting plates 6 are arranged on the front side and the rear side of Jiong type racks 2 in the side view direction along the tops of the Jiong type racks 2, the two adjusting plates 6 are horizontally arranged in Jiong type racks 2, the first tensioning rollers 9 and the second tensioning rollers 10 are arranged between the two adjusting plates 6, the first tensioning rollers 9 are located above the second tensioning rollers 10, the first tensioning rollers 9 are close to air suction ports of the high-pressure centrifugal fans 4, the second tensioning rollers 10 are located below the adjusting plates 6, the second tensioning rollers 10 are connected with the corresponding adjusting plates 6 through connecting plates 8, namely the number of the connecting plates 8 is two, the connecting plates 8 are connected with the adjusting plates 6 in a one-to-one correspondence, and the second tensioning rollers 10 are located between the two connecting plates 8.

The belt wheel transmission structure 13 is installed on the adjusting plate 6 and used for driving the first tensioning roller 9 to rotate, the first tensioning roller 9 is in transmission connection with the second tensioning roller 10 through the conveying belt 11, the first tensioning roller 9 can drive the second tensioning roller 10 to rotate through the conveying belt 11, the convex plates 12 are used for lifting mud, the convex plates 12 are made of rubber components, the convex plates 12 made of rubber have low operation damage to the ground, the convex plates 12 are installed on the conveying belt 11 and can drive the mud to the air suction port position of the high-pressure centrifugal fan 4 through the conveying belt 11 so that the mud can be blown into the mud storage box 3, in order to lift the mud, the number of the convex plates 12 is selected to be multiple, each convex plate 12 is arranged along the length direction of the first tensioning roller 9, the convex plates 12 are arranged at equal intervals along the outer wall of the conveying belt 11, each convex plate 12 is vertically connected with the outer wall of the conveying belt 11, the belt wheel transmission structure 13 drives the conveying belt 11 to drive the conveying belt 12, the convex plates 12 drive the bottom convex plates 12 to rotate upwards along with the transmission of the conveying belt 11, the transmission, the convex plates 12 move to the outer wall of the conveying belt 11, the high-pressure centrifugal fan 4 is moved to the air suction port position of the high-pressure centrifugal fan, and the mud can be collected.

The belt wheel transmission structure 13 comprises a speed reducing motor 14, a driving wheel and a driven wheel, the driving wheel is connected with the driving wheel through a wedge-shaped belt, the speed reducing motor 14 is installed on the adjusting plate 6, the output end of the speed reducing motor 14 is connected with the driving wheel, the driven wheel is connected with a first tensioning roller 9, the driving wheel is connected with the driven wheel through a belt, the conveying belt 11 is located between the adjusting plate 6, and the speed reducing motor 14 drives the conveying belt 11 to transmit through the first tensioning roller 9.

The connecting assembly comprises a connecting rod supporting structure 5 and an electric push rod 7, the fixed end of the electric push rod 7 is connected with the Jiong-shaped rack 2, the telescopic end of the electric push rod 7 is connected with the adjusting plate 6, and the electric push rod 7 is used for adjusting the height of the sludge cleaning assembly, so that the cleaning height of the sludge cleaning assembly can be adjusted, and the sludge cleaning assembly can be lifted up to be convenient to clean when not used; one end of the connecting rod supporting structure 5 is connected with the side end of the Jiong-shaped frame 2, and the other end of the connecting rod supporting structure 5 is connected with the adjusting plate 6 and used for fixing and drawing the position of the sludge cleaning assembly after the height is adjusted.

Referring to fig. 1, specifically, the number of the electric push rods 7 can be two, the two electric push rods 7 are arranged on two sides of a Jiong-shaped frame 2, so that the electric push rods 7 are connected with an adjusting plate 6 in a one-to-one correspondence manner, meanwhile, the electric push rods 7 are arranged in an inclined manner, the fixed ends of the electric push rods 7 are located on the left side of a Jiong-shaped frame 2, and the telescopic ends of the electric push rods 7 are located on the right side of the adjusting plate 6, so that the distance between the first tensioning roller 9 and the air suction port of the high-pressure centrifugal fan 4 can be adjusted when the height of the adjusting plate 6 is adjusted, and the use requirement is met; the number of the connecting rod supporting structures 5 can be even, so that the connecting rod supporting structures 5 are symmetrically arranged on two sides of the Jiong-shaped rack 2, the connecting rod supporting structures 5 on each side of the Jiong-shaped rack 2 are connected with corresponding adjusting plates 6, taking four connecting rod supporting structures 5 as an example, two connecting rod supporting structures 5 are respectively arranged on the front side and the rear side of the Jiong-shaped rack 2, the top ends of the connecting rod supporting structures 5 are connected with the top portions of the corresponding side ends of the Jiong-shaped rack 2, the bottom ends of the connecting rod supporting structures 5 are connected with corresponding adjusting plates 6, after the height of the adjusting plates 6 is adjusted, two ends of the connecting rod supporting structures 5 are fixedly connected with the corresponding adjusting plates 6 and Jiong-shaped rack 2, and the height of the adjusting plates 6 is guaranteed to be kept unchanged.

When the device is used, firstly, a worker fixes the device to the tail part of an engineering operation vehicle through the connecting seat 1, namely, a group of connecting blocks which can be mutually inserted with the connecting vertical grooves 103 are welded at the tail part of the engineering operation vehicle, and the vertical plate 101 and the connecting blocks are fixed at the tail part of the engineering operation vehicle through bolts, after the device is installed, the air suction dredge for bridge construction is dragged by the engineering operation vehicle to move in the extending direction of a road, in the moving process, the worker starts the electric push rod 7 to work, the adjusting plate 6 and the silt cleaning component are pushed by the electric push rod 7 to move towards the ground until the convex plate 12 at the lowest end is contacted with the ground or penetrates into mud for a certain depth, so that the purpose of controlling the operation height of the silt cleaning component is achieved, after the silt cleaning component is debugged, A worker synchronously starts a speed reducing motor 14 and a high-pressure centrifugal fan 4 to work, the high-pressure centrifugal fan 4 generates high-pressure suction at the tail end of a sludge cleaning assembly, the speed reducing motor 14 drives a first tensioning roller 9 to rotate through a belt wheel transmission structure 13 in the process, then the first tensioning roller 9 and a second tensioning roller 10 drive a conveying belt 11 to rotate, at the moment, a convex plate 12 continuously cleans mud blocks, mud and the like on a road in the direction of the high-pressure centrifugal fan 4 to help the high-pressure centrifugal fan 4 to quickly discharge the mud blocks and the mud into a mud storage box 3, in the moving process of an engineering operation vehicle, the movable mud cleaning function is realized, the scattered or flowing mud can be cleaned in time more simply and efficiently, the manual cleaning strength and the manual cost are reduced, and meanwhile, compared with a fixed-point air mud suction machine for bridge construction, the worker does not need to collect the mud blocks in advance, the mud and other wastes effectively reduce the working efficiency of workers and improve the road decontamination and construction efficiency.

Claims

1. The utility model provides a bridge construction is with air suction dredge which characterized in that: the device comprises a Jiong-shaped rack (2), a sludge storage tank (3), a high-pressure centrifugal fan (4) and a sludge cleaning assembly, wherein the high-pressure centrifugal fan (4) and the sludge storage tank (3) are arranged on the outer side of the Jiong-shaped rack (2), an air suction port of the high-pressure centrifugal fan (4) is communicated with the inner side of the Jiong-shaped rack (2), a discharge port of the high-pressure centrifugal fan (4) is communicated with the sludge storage tank (3), and the sludge cleaning assembly is arranged on the inner side of the Jiong-shaped rack (2) and is movably connected with the Jiong-shaped rack (2) through a connecting assembly.

2. The air suction dredge for bridge construction according to claim 1, characterized in that: the sludge sweeping assembly comprises an adjusting plate (6), a first tensioning roller (9), a second tensioning roller (10), a conveying belt (11), a convex plate (12) and a belt wheel transmission structure (13); the quantity of regulating plate (6) is two, two regulating plate (6) sets up relatively, regulating plate (6) through coupling assembling with Jiong style of calligraphy frame (2)'s top swing joint, first tensioning roller (9) and second tensioning roller (10) syntropy set up to first tensioning roller (9) and second tensioning roller (10) all set up between two regulating plate (6), first tensioning roller (9) are located the top of second tensioning roller (10), and first tensioning roller (9) are close to high-pressure centrifugal fan (4)'s induction port, pulley drive structure (13) set up on arbitrary regulating plate (6), and pulley drive structure (13) are connected with first tensioning roller (9) transmission, and first tensioning roller (9) are connected with second tensioning roller (10) transmission through conveyer belt (11), the quantity of protruding board (12) is a plurality of, and a plurality of protruding board (12) set up along the week side of conveyer belt (11) equidistant, protruding board (12) and conveyer belt (11) and first tensioning roller (12) surface are connected perpendicularly to protruding board (12).

3. The air suction dredge for bridge construction according to claim 2, characterized in that: band pulley transmission structure (13) include gear motor (14), action wheel and follow the driving wheel, the stiff end and regulating plate (6) of gear motor (14) are connected, and the output and the action wheel of gear motor (14) are connected, be connected with first tensioning roller (9) from the driving wheel, the action wheel is connected with first tensioning roller (9) transmission through following the driving wheel.

4. The air suction dredge for bridge construction according to claim 3, characterized in that: coupling assembling includes connecting rod bearing structure (5) and electric putter (7), the stiff end of electric putter (7) is connected with the top of Jiong style of calligraphy frame (2), and the flexible end and the regulating plate (6) of electric putter (7) are connected, the one end and the regulating plate (6) of connecting rod bearing structure (5) are connected, and the other end and the top of Jiong style of calligraphy frame (2) of connecting rod bearing structure (5) are connected.

5. The air suction dredge for bridge construction according to claim 4, characterized in that: the quantity of electric putter (7) is two, two electric putter (7) and regulating plate (6) one-to-one setting, and the stiff end of electric putter (7) is located Jiong style of calligraphy frame (2) and keeps away from the one end of high-pressure centrifugal fan (4), and the flexible end of electric putter (7) is located regulating plate (6) and is close to the one end of high-pressure centrifugal fan (4).

6. The air suction dredge for bridge construction according to claim 5, characterized in that: the quantity of connecting rod bearing structure (5) is four, four connecting rod bearing structure (5) symmetry sets up in Jiong style of calligraphy frame (2) relative both sides, the homonymy connecting rod bearing structure (5) syntropy sets up, the one end of connecting rod bearing structure (5) is located Jiong style of calligraphy frame (2) and is close to the one end of high-pressure centrifugal fan (4), and the other end of connecting rod bearing structure (5) is located regulating plate (6) and keeps away from the one end of high-pressure centrifugal fan (4), electric putter (7) are located the outside of connecting rod bearing structure (5).

7. The air suction dredge for bridge construction according to claim 6, characterized in that: one end of the Jiong-shaped rack (2) far away from the high-pressure centrifugal fan (4) is provided with a connecting seat (1), and the connecting seat (1) is located at the top of the Jiong-shaped rack (2).

8. The air suction dredge for bridge construction according to claim 7, characterized in that: the connecting seat (1) comprises a bottom plate, a vertical plate (101) vertically arranged at the top of the bottom plate and reinforcing columns (102) arranged on two sides of the vertical plate (101), the top ends of the reinforcing columns (102) are connected with the vertical plate (101), and the other ends of the reinforcing columns (102) are connected with the bottom plate.

9. The air suction dredge for bridge construction according to claim 8, characterized in that: the vertical plates (101) are provided with connecting vertical grooves (103), the reinforcing columns (102) are positioned on two sides of the connecting vertical grooves (103), and the openings of the connecting vertical grooves (103) are back to the high-pressure centrifugal fan (4).