Synchronous spraying device for U rib group of orthotropic steel bridge deck

Abstract

The utility model provides a synchronous spraying device for a U rib group of an orthotropic steel bridge deck slab, which comprises a traveling mechanism configured to move on the top surface of a U rib of the orthotropic steel bridge deck slab, a spraying machine mounted on the traveling mechanism and provided with at least three spray guns, and a plurality of spray nozzles mounted on the spraying machine and parallel to the traveling direction at intervals, the spraying gun is used for extending to the position between the adjacent U ribs for spraying, each spraying gun is detachably connected with three high-pressure atomization nozzles through a regular four-way pipe joint so as to achieve atomization spraying of the U ribs, the spraying device can be suitable for spraying operation of the U rib group of the orthotropic steel bridge deck slab, and the device is simple and feasible in structural design, convenient and fast to operate and high in practicability. And the synchronous spraying operation efficiency of the U ribs can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge spraying, and in particular relates to a synchronous spraying device for a U-rib group of an orthotropic steel bridge deck. Background Art

[0002] Orthotropic steel bridge deck (orthotropic plate) is a structure composed of longitudinal and transverse perpendicular stiffening ribs (longitudinal ribs and transverse ribs) and bridge deck cover to bear wheel loads. Since its stiffness is different in two perpendicular directions, it causes structural anisotropy. It is widely used in modern bridge engineering. Its characteristic is that multiple U ribs are arranged on the bridge deck to enhance the bearing capacity and stiffness of the structure. Among them, the design of U ribs not only needs to meet the mechanical performance requirements, but also must ensure the quality of its surface treatment to ensure the durability and maintenance cost of the bridge. In the existing bridge construction practice, the surface spraying operation of U ribs mainly relies on manual operation. This process not only has problems such as high labor intensity, low operation efficiency, high cost and health risks for operators, but also due to the existence of human factors, the uniformity and quality of spraying are difficult to be effectively guaranteed. These defects not only affect the construction progress, but also indirectly increase the difficulty and cost of later maintenance. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a synchronous spraying device for U-rib groups of orthogonal anisotropic steel bridge decks, which can be suitable for spraying operations of U-rib groups of orthogonal anisotropic steel bridge decks. The device structure design is simple and feasible, and the operation is convenient, which helps to improve the efficiency of the U-rib synchronous spraying operation.

[0004] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:

[0005] The utility model provides a synchronous spraying device for a U-rib group of an orthotropic steel bridge deck, comprising:

[0006] The walking mechanism is configured to move on the top surface of the U-rib of the orthotropic steel bridge deck;

[0007] A sprayer is installed on a traveling mechanism and is equipped with at least three spray guns, which are arranged perpendicular to the traveling direction and in parallel and spaced apart, and are used to extend between adjacent U-ribs for spraying, and each of the spray guns is detachably connected to three high-pressure atomizing nozzles through a positive four-way pipe joint to achieve atomizing spraying of the U-ribs.

[0008] Furthermore, a magnetic sheet for adsorbing on the top of the U-rib is provided on the wheel of the walking mechanism.

[0009] Furthermore, a multi-tooth fork-shaped bracket is provided on the walking mechanism, the fork teeth of the bracket are distributed at intervals in a left-right symmetrical manner about the central axis of the walking mechanism, and each fork tooth end is equipped with a spray gun.

[0010] Furthermore, the bracket is arranged at the front end and / or the rear end of the walking mechanism.

[0011] Furthermore, the spraying machine also includes a supply tank and a high-pressure pump connected to the spray gun through a high-pressure hose.

[0012] Furthermore, the walking mechanism also includes a control box, and the control box is electrically connected to the high-pressure pump.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model provides a synchronous spraying device for U-rib groups of orthogonal anisotropic steel bridge decks, which adopts a traveling mechanism to move along the top surface of the U-rib of the orthogonal anisotropic steel bridge deck, and is equipped with a spraying machine equipped with at least three spray guns, and the spray guns are perpendicular to the traveling direction and are arranged in parallel and at intervals, and three high-pressure atomizing nozzles are detachably connected to realize multi-point synchronous atomizing spraying of the U-ribs. The device structure is simple and feasible in design, and easy to operate, which helps to improve the efficiency of the U-rib synchronous spraying operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a synchronous spraying device provided according to an embodiment of the utility model;

[0016] Figure 2 It is a structural schematic diagram of a synchronous spraying device for a U-rib group of an orthotropic steel bridge deck provided according to an embodiment of the utility model;

[0017] Figure 3 yes Figure 2 A front view of

[0018] Figure 4 yes Figure 1 Left view of .

[0019] In the figure:

[0020] 1. Top plate; 2. U ribs; 3. Travel mechanism; 4. Wheels; 5. Magnetic sheet; 6. Bracket; 7. Spray gun; 8. Straight four-way pipe; 9. Spray nozzle; 10. Control box; 11. Feed tank; 12. High-pressure pump; 13. Drive motor; 14. Signal antenna; 15. High-pressure hose. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are 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, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0024] like Figure 1 to Figure 4 As shown, an embodiment of the utility model provides a synchronous spraying device for U-rib groups of orthogonal anisotropic steel bridge decks, including a walking mechanism 3, a sprayer, a control box 10 and a matching power supply.

[0025] Among them, the walking mechanism 3 is arranged to move on the top surface of the U rib 2 of the orthogonal anisotropic steel bridge deck. The walking mechanism 3 can adopt the conventional design in the prior art, for example, the body is made of solid metal or alloy material to support the weight of the entire device and maintain stability, the drive system adopts a drive motor, for example, an electric motor is used as the driving force, and the drive start and stop operation is performed through the control system in the control box 10 by wireless or wired means. It should be noted that the improvement of the technical solution of this application lies in the connection relationship between the walking mechanism 3 and the sprayer, the overall structure / construction, etc. of the device, and there is no specific restriction on the drive control method of the walking mechanism 3, the specific control element model, the drive motor model, etc., and the above basic functions can be achieved by using existing conventional technology.

[0026] The wheel 4 is made of solid rubber material to adapt to the top surface of the U rib 2 of different shapes. In order to walk on the top surface of the U rib 2 more stably, the wheel 4 is provided with a magnetic sheet 5 for adsorbing on the top of the U rib 2. Specifically, the magnetic sheet 5 is made of a permanent magnet, which can be made into an arc shape and evenly spaced along the circumference and embedded in the outer surface of the wheel 4, so that it can be adsorbed on the surface of the steel structure when in contact with the surface of the U rib 2. However, it needs to be determined that the resistance caused by the magnetic attraction must be less than the driving force generated by the walking mechanism 3, so that it can walk smoothly and stably.

[0027] The spraying machine is installed on the traveling mechanism 3 and is equipped with at least three spray guns 7, which are arranged perpendicular to the traveling direction and parallel to each other, and are used to extend between adjacent U-ribs 2 for spraying, and each of the spray guns 7 is detachably connected to three high-pressure atomizing nozzles 9 through a positive four-way pipe 8 joint to realize atomizing spraying of the U-ribs 2. Among them, the three high-pressure atomizing nozzles 9 are respectively directed to the two side surfaces and the bottom surface of the groove formed between the U-ribs, and each surface is sprayed by atomization.

[0028] The sprayer also includes a feed tank 11 and a high-pressure pump 12 connected to the spray gun 7 through a high-pressure hose 15. In the technical solution of the present application, the high-pressure pump 12 generates pressure according to the instructions of the control system in the control box 10, extracts the paint from the feed tank 11 and delivers it to the spray gun 7 through the high-pressure hose 15. Inside the spray gun 7, the paint is sprayed through the nozzle of the nozzle 9 and meets the high-speed airflow generated by the air cap to achieve atomization. Finally, the atomized paint is evenly sprayed on the surface of the U rib 2 to form a coating.

[0029] The control box 10 controls the movement of the traveling mechanism 3 and the start and stop of the spraying of the sprayer during the entire spraying operation. In some specific embodiments, the control box 10 is also equipped with a signal antenna for wirelessly transmitting control signals.

[0030] In this embodiment, a multi-tooth fork-shaped bracket 6 is provided on the walking mechanism 3, the forks of the bracket 6 are arranged at intervals symmetrically about the central axis of the walking mechanism 3, and each fork end is equipped with a spray gun 7. The bracket 6 is provided at the front end or / and the rear end of the walking mechanism 3.

[0031] The fork tines of the bracket 6 may also be configured as a telescopic structure, such as a telescopic rod, etc., so as to facilitate appropriate adjustment according to the depth of the grooves between different U-ribs 2.

[0032] In addition, the bracket 6 can adopt a hollow tubular structure, such as a square tube or a round tube, so as to facilitate the insertion of a high-pressure hose 15, etc. In order to reduce the weight of the overall device, the bracket 6 can be made of lightweight aluminum alloy, carbon fiber reinforced plastic (CFRP), polyamide (PA), polyetheretherketone (PEEK) high-performance engineering plastics, etc., and adopt extrusion molding, 3D printing or mechanical processing to achieve the designed hollow tubular structure.

[0033] In this embodiment, if Figure 2 and Figure 3 As shown, the spraying machine is equipped with three spray guns 7, and the bracket 6 is equipped with corresponding three fork teeth. When used for spraying operations, the wheels 4 of the walking mechanism 3 are placed on the top surfaces of two adjacent U-ribs 2, and the three spray guns 7 are respectively placed in three grooves formed by the adjacent U-ribs 2, that is, the grooves between the inner sides of the U-ribs 2 where the wheels 4 on both sides are located and the grooves on the outer sides of the U-ribs 2 where the wheels 4 on both sides are located.

[0034] Next, the working principle of the synchronous spraying device for the U-rib group 2 of the orthotropic steel bridge deck of the utility model is described in combination with specific usage operations.

[0035] Step 1) Ensure that all components, including the travel mechanism 3, sprayer, control box 10, feed tank 11, high-pressure pump 12, etc. are correctly installed and connected; check whether the high-pressure hose 15, the straight four-way pipe 8 joint, the spray gun 7 and the high-pressure atomizing nozzle 9 are intact and ensure that there is no leakage; add the paint to the feed tank 11 and ensure that the feed tank 11 is well sealed; check whether the magnetic suction sheet 5 is clean to ensure its adsorption force.

[0036] Step 2) Move the walking mechanism 3 to the starting position at the top of the U-rib 2, ensuring that it is correctly aligned with the starting spraying point of the U-rib 2.

[0037] Step 3) Open the control box 10 and set the spraying parameters according to the preset program of the control system, including spraying speed, spraying amount, atomization pressure, etc.; start the sprayer to ensure that the paint can be smoothly atomized through the spray gun 7.

[0038] Step 4) Operate the control box 10 to start the movement of the traveling mechanism 3. As the traveling mechanism 3 moves, the spray gun 7 performs the spraying operation synchronously, and the paint is evenly sprayed on the surface of the U rib 2 through the high-pressure atomizing nozzle 9.

[0039] Step 5) When the running mechanism 3 completes the spraying operation of the preset part, the movement of the running mechanism 3 is stopped. The spraying machine is turned off, the paint supply is cut off, and the spray gun 7 and the high-pressure atomizing nozzle 9 are disassembled and ensured to be clean inside.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A synchronous spraying device for U-rib groups of orthotropic steel bridge decks, characterized in that: include: The walking mechanism is configured to move on the top surface of the U-rib of the orthotropic steel bridge deck; A sprayer is installed on a traveling mechanism and is equipped with at least three spray guns, which are arranged perpendicular to the traveling direction and in parallel and spaced apart, and are used to extend between adjacent U-ribs for spraying, and each of the spray guns is detachably connected to three high-pressure atomizing nozzles through a positive four-way pipe joint to achieve atomizing spraying of the U-ribs.

2. The synchronous spraying device for U-rib groups of orthotropic steel bridge decks according to claim 1 is characterized in that: The wheels of the walking mechanism are provided with magnetic sheets for adsorbing on the top of the U-rib.

3. The synchronous spraying device for U-rib groups of orthotropic steel bridge decks according to claim 1 is characterized in that: The walking mechanism is provided with a bracket in the shape of a multi-tooth fork, the fork teeth of the bracket are distributed at intervals in a left-right symmetric manner about the central axis of the walking mechanism, and each fork tooth end is provided with a spray gun.

4. The synchronous spraying device for U-rib groups of orthotropic steel bridge decks according to claim 3 is characterized in that: The bracket is arranged at the front end and / or the rear end of the walking mechanism.

5. The synchronous spraying device for U-rib groups of orthotropic steel bridge decks according to claim 1 is characterized in that: The spraying machine also includes a supply tank and a high-pressure pump which are connected to the spray gun through a high-pressure hose.

6. The synchronous spraying device for U-rib groups of orthotropic steel bridge decks according to claim 5 is characterized in that: The walking mechanism also includes a control box, and the control box is electrically connected to the high-pressure pump.

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