Bridge box girder bottom flange spraying maintenance device

Abstract

The utility model discloses a spraying maintenance device for a lower flange of a bridge box girder, which relates to the technical field of bridge maintenance and comprises a water tank, a lifting mechanism, a rotating mechanism, a telescopic mechanism and a spraying component. The lifting mechanism comprises a winch and a mounting frame, and the winch is connected with the mounting frame through a steel wire rope; the rotating mechanism comprises a belt transmission device and a supporting plate, one end of the belt transmission device is connected with the mounting frame, and the other end of the belt transmission device is connected with the supporting plate; the telescopic mechanism comprises an air cylinder assembly and a folding plate, one end of the air cylinder assembly is connected with the supporting plate, and the other end of the air cylinder assembly is connected with the folding plate. One end of the spraying assembly is connected with the water tank, and the other end of the spraying assembly is connected with the rotating mechanism and the telescopic mechanism. According to the utility model, the spraying effect can be improved; meanwhile, through the telescopic mechanism, the spraying area can be adjusted, and the spraying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge maintenance, and particularly relates to a spray maintenance device for the lower flange of a bridge box girder. Background Art

[0002] In bridge construction, large precast concrete beams are used more and more widely. In order to prevent the box beams from shrinking and deforming too much and causing shrinkage cracks, the box beams need to be sprayed and cured.

[0003] At present, the conventional method is to manually use water pipes to spray around the beams for maintenance, which is time-consuming and labor-intensive and has poor maintenance effects. In addition, there are certain safety hazards in manual spraying along the beams. The length of the existing spray maintenance device pipe extending along the beam is too large, and the stabilization effect is relatively general. At the same time, it is difficult to maintain the lower flange of the box girder.

[0004] The Chinese patent with authorization announcement number CN216999315U discloses a bridge box girder lower flange and concrete spraying maintenance device, which realizes spraying maintenance of the lower flange of the box girder by extending a spray plate to fit under the lower flange of the box girder, and then pressurizing the lower flange of the box girder.

[0005] However, the above solution still has certain shortcomings:

[0006] 1. The cross section of the lower flange of the spray plate box beam is a right-angle trapezoid. It is difficult for the spray plate to extend into the lower flange, and it is very inconvenient to fold and put down.

[0007] 2. The width of the spray plate is limited, resulting in a smaller spray area and lower spray maintenance efficiency. Utility Model Content

[0008] The utility model aims to provide a bridge box girder lower flange spraying maintenance device to solve the problems existing in the background technology.

[0009] The purpose of this utility model is achieved through the following technical solutions:

[0010] A spraying maintenance device for the lower flange of a bridge box beam, comprising a water tank, a lifting mechanism, a rotating mechanism, a telescopic mechanism and a spraying assembly;

[0011] The lifting mechanism includes a winch and a mounting frame, one end of the mounting frame is hinged to the water tank, the winch is fixed on the water tank, and the winch is connected to the mounting frame through a steel wire rope;

[0012] The rotating mechanism comprises a belt transmission device and a support plate, one end of the belt transmission device is connected to the mounting frame, and the other end of the belt transmission device is connected to the support plate;

[0013] The telescopic mechanism comprises a cylinder assembly and a folding plate, one end of the cylinder assembly is connected to the support plate, and the other end of the cylinder assembly is connected to the folding plate;

[0014] One end of the spray assembly is connected to the water tank, and the other end of the spray assembly is connected to the rotating mechanism and the telescopic mechanism respectively.

[0015] Furthermore, the mounting frame is an H-shaped structure, and the steel wire rope of the winch is connected to the middle crossbeam of the mounting frame.

[0016] Furthermore, the belt transmission device includes a motor, a driving wheel, a driven wheel, a belt and a hinged rod, the motor is connected to the driving wheel, the driving wheel and the driven wheel are connected through the belt, the base of the motor is fixed on the side of the mounting frame close to the water tank, the hinged rod is hinged to the end of the mounting frame away from the water tank, the driven wheel is sleeved on the hinged rod and has an interference fit with the hinged rod, and one end of the support plate is fixedly connected to the hinged rod.

[0017] Furthermore, the cylinder assembly includes two symmetrically arranged electric cylinders, the piston ends of the electric cylinders are fixed to the top of the side walls of the folding plates, the cylinder seats of the electric cylinders are fixed to the support plates, the folding plates are arranged at an angle to the support plates and are adapted to the angle of the lower flange of the box beam.

[0018] Furthermore, the spray assembly includes a water supply pipe, a first telescopic pipe, a connecting pipe, a second telescopic pipe and a branch pipe which are connected in sequence, one end of the water supply pipe is connected to the water tank, the water supply pipe is located below the mounting frame, the first telescopic pipe is located at the connection between the mounting frame and the support plate, the connecting pipe and the second telescopic pipe are respectively fixed to the support plate by pipe clamps, the second telescopic pipe is close to the folding plate and parallel to the folding direction of the folding plate, a plurality of branch pipes are fixed to the folding plate and are perpendicular to the folding direction of the folding plate, the branch pipe is located on the side of the folding plate close to the lower flange of the box girder, and a plurality of nozzles are evenly arranged on the branch pipe.

[0019] Furthermore, a connecting rod assembly is provided on the side of the folding plate away from the branch pipe, and the connecting rod assembly is a cross-shaped structure. The upper two ends of the connecting rod assembly are respectively hinged to the upper two sides of the folding plate, and the lower two ends of the connecting rod assembly are provided with sliders. The lower two ends of the connecting rod assembly are hinged to the sliders, and sliding rails matching the sliders are provided below the two sides of the folding plate. The lower two ends of the connecting rod assembly are slidably connected to the folding plate through the sliders and the sliding rails.

[0020] Furthermore, a walking mechanism is provided below the water tank, and a pressurizing device is also provided inside the water tank.

[0021] The beneficial effects of the utility model are:

[0022] 1) Through the lifting mechanism and the rotating mechanism, the spray assembly can be easily extended to the bottom of the lower flange of the box beam to improve the spraying effect.

[0023] 2) The telescopic mechanism can adjust the spraying area and improve the spraying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a spray curing device for the lower flange of a bridge box girder of the utility model during spraying;

[0025] Figure 2 This is a top view of a spray curing device for the lower flange of a bridge box girder according to the utility model;

[0026] Figure 3 It is a schematic diagram of a bridge box girder lower flange spraying maintenance device of the utility model when it is folded;

[0027] Figure 4 It is a schematic diagram of the folding plate and the branch pipe in the utility model;

[0028] Figure 5 It is a schematic diagram of the folding plate and connecting rod assembly in the utility model;

[0029] In the figure, 1-lower flange of box beam, 2-water tank, 3-lifting mechanism, 301-winch, 302-mounting frame, 4-rotating mechanism, 401-support plate, 402-motor, 403-driving wheel, 404-driven wheel, 405-belt, 406-hinge rod, 5-telescopic mechanism, 501-electric cylinder, 502-folding plate, 503-connecting rod assembly, 5031-slider, 5032-slide rail, 6-spraying assembly, 601-water supply pipe, 602-first telescopic pipe, 603-connecting pipe, 604-second telescopic pipe, 605-branch pipe, 606-sprinkler. DETAILED DESCRIPTION

[0030] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0032] like Figure 1-Figure 5As shown, a spray curing device for the lower flange of a bridge box girder comprises a water tank 2, a lifting mechanism 3, a rotating mechanism 4, a telescopic mechanism 5 and a spray assembly 6;

[0033] The lifting mechanism 3 includes a hoist 301 and a mounting frame 302, one end of the mounting frame 302 is hinged to the water tank 2, the hoist 301 is fixed on the water tank 2, and the hoist 301 is connected to the mounting frame 302 through a steel wire rope;

[0034] The rotating mechanism 4 includes a belt 405 transmission device and a support plate 401, one end of the belt 405 transmission device is connected to the mounting frame 302, and the other end of the belt 405 transmission device is connected to the support plate 401;

[0035] The telescopic mechanism 5 includes a cylinder assembly and a folding plate 502, one end of the cylinder assembly is connected to the support plate 401, and the other end of the cylinder assembly is connected to the folding plate 502;

[0036] One end of the spray assembly 6 is connected to the water tank 2 , and the other end of the spray assembly 6 is connected to the rotating mechanism 4 and the telescopic mechanism 5 respectively.

[0037] Through the above technical scheme, the lifting mechanism 3 can drive the rotating mechanism 4, the telescopic mechanism 5 and the spray assembly 6 at one end to move, so that the spray assembly 6 can be conveniently extended out of the box beam, and it is also convenient for recycling, reducing space occupancy and reducing labor intensity; at the same time, since the telescopic mechanism 5 is connected to the rotating mechanism 4, the support plate 401 and the telescopic mechanism 5 can be driven to rotate together through the belt 405 transmission device, and then the telescopic assembly and the spray assembly 6 can be extended to the bottom of the lower flange 1 of the box beam, and it is also convenient for subsequent recycling and reducing space occupancy; at the same time, the folding plate 502 is opened to increase the spraying area and improve the spraying effect and spraying efficiency.

[0038] Furthermore, the mounting frame 302 is an H-shaped structure, and the steel wire rope of the hoist 301 is connected to the middle crossbeam of the mounting frame 302 .

[0039] Through the above technical solution, since the mounting frame 302 is connected to the wire rope of the winch 301 and the mounting frame 302 is hinged to the water tank 2, the winch 301 can be used to lengthen or wind up the wire rope to control the mounting frame 302 to rotate around the hinge point, which is convenient for lowering and folding.

[0040] Furthermore, the belt 405 transmission device includes a motor 402, a driving wheel 403, a driven wheel 404, a belt 405 and a hinged rod 406, the motor 402 is connected to the driving wheel 403, the driving wheel 403 and the driven wheel 404 are connected through the belt 405, the base of the motor 402 is fixed on the side of the mounting frame 302 close to the water tank 2, the hinged rod 406 is hinged to the end of the mounting frame 302 away from the water tank 2, the driven wheel 404 is sleeved on the hinged rod 406 and is interference fit with the hinged rod 406, and one end of the support plate 401 is fixedly connected to the hinged rod 406.

[0041] According to the above technical solution, the driving wheel 403 is driven to rotate by the motor 402, and the driving wheel 403 drives the driven wheel 404 to rotate through the belt 405, and the driven wheel 404 and the hinge rod 406 rotate around the hinge point, and at the same time drive the support plate 401 connected to the hinge rod 406 to rotate together. Then, the rotation angle of the support plate 401 is controlled by the motor 402, so that the support plate 401 is adjusted to be parallel to the side wall of the box beam in the working state, and when the support plate 401 is folded, the support plate 401 is rotated to the top of the mounting frame 302 to reduce the space occupied.

[0042] Furthermore, the cylinder assembly includes two symmetrically arranged electric cylinders 501, the piston end of the electric cylinder 501 is fixed to the top of the side wall of the folding plate 502, the cylinder seat of the electric cylinder 501 is fixed to the support plate 401, and the folding plate 502 is arranged at an angle to the support plate 401 and is adapted to the angle of the lower flange 1 of the box girder.

[0043] Through the above technical solution, the two sides of the folding plate 502 are located outside the two sides of the support plate 401, and the piston ends of the two electric cylinders 501 are arranged on both sides and extend out of the support plate 401. Since the folding plate 502 is fixedly connected to the piston end, the folding plate 502 is driven to be folded and unfolded by the extension and contraction of the piston rod of the electric cylinder 501. At the same time, the angle between the support plate 401 and the folding plate 502 is the same as the angle of the lower flange of the box beam, so that after the support plate 401 is rotated and lowered by the belt 405 transmission device, the support plate 401 is parallel to the side wall of the box beam, and the folding plate 502 is parallel to the lower flange 1 of the box beam, so that the corresponding nozzles 606 are at the same distance from the spray surface, thereby improving the spraying effect.

[0044] Furthermore, the spray assembly 6 includes a water supply pipe 601, a first telescopic pipe 602, a connecting pipe 603, a second telescopic pipe 604 and a branch pipe 605 which are connected in sequence, one end of the water supply pipe 601 is connected to the water tank 2, the water supply pipe 601 is located below the mounting frame 302, the first telescopic pipe 602 is located at the connection between the mounting frame 302 and the support plate 401, the connecting pipe 603 and the second telescopic pipe 604 are respectively fixed to the support plate 401 by pipe clamps, the second telescopic pipe 604 is close to the folding plate 502 and parallel to the folding direction of the folding plate 502, a plurality of branch pipes 605 are fixed on the folding plate 502 and are perpendicular to the folding direction of the folding plate 502, the branch pipe 605 is located on the side of the folding plate 502 close to the lower flange 1 of the box girder, and a plurality of nozzles 606 are evenly arranged on the branch pipe 605.

[0045] Through the above technical solution, the water in the water tank 2 passes through the water supply pipe 601, the first telescopic pipe 602, the connecting pipe 603, the second telescopic pipe 604 and the branch pipe 605, and finally sprays out from the nozzle 606. The length of the water supply pipe 601 is longer than the length of the mounting frame 302, so that the lifting mechanism 3 will not affect the normal water supply of the water supply pipe 601. The first telescopic pipe 602 adopts a telescopic corrugated pipe, which can be extended to a certain length, so as to rotate with the rotating mechanism 4. The second telescopic pipe 604 also adopts a telescopic corrugated pipe. Since the branch pipe 605 is connected to the folding plate 502 through a pipe clamp, the connection between the branch pipe 605 and the second telescopic pipe 604 can be correspondingly extended to a certain length after the branch pipe 605 is unfolded following the folding plate 502. At the same time, the length of the branch pipe 605 is longer than the length of the folding plate 502, so that the water supply of the branch pipe 605 will not be affected after the folding plate 502 is unfolded. The width of the area that needs to be sprayed can be adjusted through the folding component, and the width of the spraying can be planned in advance, thereby opening the nozzles 606 that need to be sprayed and closing some unnecessary nozzles 606, which can effectively control the spraying area and save water.

[0046] Furthermore, a connecting rod assembly 503 is provided on the side of the folding plate 502 away from the branch pipe 605, and the connecting rod assembly 503 is a cross-shaped structure. The upper two ends of the connecting rod assembly 503 are respectively hinged to the upper two sides of the folding plate 502, and the lower two ends of the connecting rod assembly 503 are provided with sliders 5031. The lower two ends of the connecting rod assembly 503 are hinged to the sliders 5031, and the lower two ends of the folding plate 502 are provided with slide rails 5032 that cooperate with the sliders 5031. The lower two ends of the connecting rod assembly 503 are slidably connected to the folding plate 502 through the sliders 5031 and the slide rails 5032.

[0047] Through the above technical solution, since the piston end of the electric cylinder 501 is connected to one end of the folding plate 502, when the electric cylinder 501 is working, the upper part of the folding plate 502 will be unfolded while the lower part will not be fully unfolded. Therefore, the upper and lower ends of the folding plate 502 are synchronized through the connecting rod assembly 503. When the piston rod of the electric cylinder 501 is extended, the upper part of the folding plate 502 is unfolded, which in turn drives the upper two ends of the connecting rod assembly 503 to open, and synchronously drives the lower two ends of the connecting rod assembly 503 to move, thereby making the lower part of the folding plate 502 unfold.

[0048] Furthermore, a walking mechanism is provided below the water tank 2 , and a pressurizing device is also provided inside the water tank 2 .

[0049] Through the above technical solution, the water tank 2 and the spray assembly 6 on one side of the water tank 2 are moved along the box beam through the walking mechanism, and can spray while moving, thereby improving the spraying efficiency. The water spraying amount of the nozzle 606 is increased through the pressurizing device, thereby improving the spraying effect.

[0050] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be protected by the claims attached to the utility model.

Claims

1. A spray curing device for the lower flange of a bridge box girder, characterized in that: It comprises a water tank (2), a lifting mechanism (3), a rotating mechanism (4), a telescopic mechanism (5) and a spray assembly (6); The lifting mechanism (3) comprises a hoist (301) and a mounting frame (302), one end of the mounting frame (302) is hinged to the water tank (2), the hoist (301) is fixed on the water tank (2), and the hoist (301) is connected to the mounting frame (302) via a steel wire rope; The rotating mechanism (4) comprises a belt (405) transmission device and a support plate (401), one end of the belt (405) transmission device is connected to the mounting frame (302), and the other end of the belt (405) transmission device is connected to the support plate (401); The telescopic mechanism (5) comprises a cylinder assembly and a folding plate (502), one end of the cylinder assembly is connected to the support plate (401), and the other end of the cylinder assembly is connected to the folding plate (502); One end of the spray assembly (6) is connected to the water tank (2), and the other end of the spray assembly (6) is respectively connected to the rotating mechanism (4) and the telescopic mechanism (5).

2. The bridge box girder lower flange spraying maintenance device according to claim 1 is characterized in that: The mounting frame (302) is an H-shaped structure, and the steel wire rope of the hoist (301) is connected to the middle crossbeam of the mounting frame (302).

3. The bridge box girder lower flange spraying maintenance device according to claim 1 is characterized in that: The belt (405) transmission device comprises a motor (402), a driving wheel (403), a driven wheel (404), a belt (405) and a hinged rod (406); the motor (402) is connected to the driving wheel (403); the driving wheel (403) and the driven wheel (404) are connected via the belt (405); a base of the motor (402) is fixed to a side of the mounting frame (302) close to the water tank (2); the hinged rod (406) is hinged to an end of the mounting frame (302) away from the water tank (2); the driven wheel (404) is sleeved on the hinged rod (406) and is interference fit with the hinged rod (406); and one end of the support plate (401) is fixedly connected to the hinged rod (406).

4. The bridge box girder lower flange spraying maintenance device according to claim 1 is characterized in that: The cylinder assembly comprises two symmetrically arranged electric cylinders (501), the piston ends of the electric cylinders (501) are fixed to the top of the side wall of the folding plate (502), the cylinder base of the electric cylinder (501) is fixed to the support plate (401), and the folding plate (502) and the support plate (401) are arranged at an angle and are adapted to the angle of the lower flange (1) of the box beam.

5. The bridge box girder lower flange spraying maintenance device according to claim 1 is characterized in that: The spray assembly (6) comprises a water supply pipe (601), a first telescopic pipe (602), a connecting pipe (603), a second telescopic pipe (604) and a branch pipe (605) which are connected in sequence, one end of the water supply pipe (601) is connected to the water tank (2), the water supply pipe (601) is located below the mounting frame (302), the first telescopic pipe (602) is located at the connection between the mounting frame (302) and the support plate (401), the connecting pipe (603) and the second telescopic pipe ( The second telescopic tube (604) is respectively fixed to the support plate (401) by pipe clamps, the second telescopic tube (604) is close to the folding plate (502) and parallel to the folding direction of the folding plate (502), a plurality of branch pipes (605) are fixed to the folding plate (502) and perpendicular to the folding direction of the folding plate (502), the branch pipes (605) are located on the side of the folding plate (502) close to the lower flange (1) of the box beam, and a plurality of nozzles (606) are evenly arranged on the branch pipes (605).

6. The bridge box girder lower flange spraying maintenance device according to claim 5, characterized in that: A connecting rod assembly (503) is provided on the side of the folding plate (502) away from the branch pipe (605); the connecting rod assembly (503) is a cross-shaped structure; the upper two ends of the connecting rod assembly (503) are respectively hinged to the upper two sides of the folding plate (502); the lower two ends of the connecting rod assembly (503) are provided with sliders (5031); the lower two ends of the connecting rod assembly (503) are hinged to the sliders (5031); the lower two ends of the folding plate (502) are provided with slide rails (5032) matching with the sliders (5031); the lower two ends of the connecting rod assembly (503) are slidably connected to the folding plate (502) via the sliders (5031) and the slide rails (5032).

7. The bridge box girder lower flange spraying maintenance device according to claim 1, characterized in that: A walking mechanism is provided below the water tank (2), and a pressurizing device is also provided inside the water tank (2).

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