Steel box girder welding and spraying operation platform

Abstract

This utility model relates to a welding and painting operation platform for steel box girders, and pertains to the field of steel box girder installation and construction. This technical solution can be efficiently applied to the welding and painting of the bottom and sides of steel box girders. By adjusting the length of the working platform and extension section, it can accommodate steel box girders of different widths. Utilizing a walking assembly, it allows free movement along the longitudinal direction of the main beam, significantly reducing the need for fixed support structures and crane usage, thus effectively lowering construction costs. Furthermore, the construction platform adopts a modular design, facilitating rapid installation, disassembly, and repeated use. The overall structure is symmetrically arranged about the centerline of the steel box girder, and the guardrail configuration can be adjusted according to the width of the box girder, ensuring stable operation and convenient construction, providing sufficient safety and economy to the construction site.

Description

Technical Field

[0001] This utility model relates to the field of steel box girder installation and construction technology, and in particular to a steel box girder welding and spraying operation platform. Background Technology

[0002] Welding and painting of the steel box girder at the bridge site are key procedures in the installation of steel bridges. Full-penetration welding is required at the joints of adjacent steel box girder segments. After welding, a final coat of paint must be applied to the joint area. The quality of these two procedures directly affects the structural stability and durability of the steel bridge and is a crucial aspect that requires strict control during installation.

[0003] For the aforementioned bridge welding and topcoat touch-up operations, the mainstream construction methods in the industry are mainly divided into two categories: one is to erect scaffolding as a working platform for construction, and the other is to use hoisting equipment to transport personnel to the work position at the bottom or top of the steel box girder to carry out the operation. The scaffolding method not only requires additional materials but also has specific requirements regarding the load-bearing capacity and flatness of the construction ground, limiting its applicability. The hoisting method, on the other hand, requires renting specialized hoisting equipment, which significantly increases the project's construction costs and is detrimental to cost control. Summary of the Invention

[0004] The purpose of this invention is to provide a steel box girder welding and spraying operation platform to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A steel box girder welding and spraying operation platform is installed on the steel box girder, and the steel box girder welding and spraying operation platform includes: A traveling assembly located on the top surface of the steel box girder, capable of moving longitudinally along the top surface of the steel box girder; An extension section is connected to one side of the traveling assembly near the flange of the steel box girder, with a portion located above the flange and another portion extending to the outside of the flange. A reciprocating passageway, the top of which is connected to the side of the extension away from the traveling assembly, a portion of which is located above the flange and another portion below the flange; and The construction platform includes a transition platform connected to the bottom of the reciprocating passage, the transition platform being located on the side of the reciprocating passage near the flange, the transition platform being connected to a working platform via a connector, and the working platform being equipped with a hoist for facilitating welding or painting operations on the flange.

[0006] In one possible implementation, the walking component includes: The walking frame has a first extension on the side near the flange that facilitates engagement with the extension section; and The traveling wheels are installed at the bottom of the traveling frame and are capable of moving longitudinally along the top surface of the steel box girder; The walking frame is also equipped with counterweights to prevent the steel box girder welding and painting operation platform from becoming unstable during installation and subsequent use.

[0007] In one possible implementation, the extension is bolted to the first protrusion via a flange.

[0008] In one possible implementation, the round-trip channel includes: A connecting section ladder, the top of which has a second protrusion for easy connection with the extension section, the second protrusion being bolted to the extension section via a flange; and Multiple standard ladder sections are provided. The top of the uppermost standard ladder section is bolted to the bottom of the connecting ladder section via a flange. The multiple standard ladder sections are bolted together via flanges. The bottommost standard ladder section is provided with a first steel tread.

[0009] In one possible implementation, the first end of the transition platform is welded to the lowest standard inter-segment ladder, the second end of the transition platform is pinned to the connector by a pin, and a second steel tread is laid on the transition platform.

[0010] In one possible implementation, the connector includes: The square steel has square steel pin connection holes on both sides, and the square steel pin connection holes on both sides are respectively pinned to the transition platform and the working platform by pins; The base, which is welded to the square steel; and The guardrail post is installed on the base, and both sides of its extended area are provided with guardrail pin connection holes, which are connected to the guardrail cross brace by pins.

[0011] In one possible implementation, a third steel tread is laid on the working platform, and the hoist is mounted on the third steel tread.

[0012] In one possible implementation, the walking components, extensions, reciprocating passages, and construction platform are all symmetrically distributed about the centerline of the steel box girder.

[0013] The beneficial effects of the technical solution provided by this utility model include at least the following: This technical solution can be efficiently applied to the welding and painting of the bottom and sides of steel box girders. By adjusting the length of the working platform and extension section, it can accommodate steel box girders of different widths. The walking assembly allows for free movement along the longitudinal direction of the main beam, significantly reducing the need for fixed support structures and crane usage, thus effectively lowering construction costs. Furthermore, the construction platform adopts a modular design, facilitating rapid installation, disassembly, and repeated use. The overall structure is symmetrically arranged about the centerline of the steel box girder, and the guardrail configuration can be adjusted according to the width of the box girder, ensuring stable operation and convenient construction, providing sufficient safety and economy for the construction site. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] Figure 1 A schematic diagram of the structure of a steel box girder welding and spraying operation platform provided in an exemplary embodiment of the present invention is shown.

[0016] Figure 2 This diagram shows a side view of the walking assembly of a steel box girder welding and spraying operation platform provided in an exemplary embodiment of the present invention.

[0017] Figure 3 A schematic diagram of the connecting component of the steel box girder welding and spraying operation platform provided in an exemplary embodiment of the present invention is shown.

[0018] In the picture: 1. Steel box girder; 101. Flange; 2. Walking assembly; 201. Walking wheel; 202. Walking frame; 203. First extension; 3. Counterweight; 4. Flange; 5. Extension section; 6. Connecting section ladder; 601. Second extension; 7. Standard segmental ladder; 8. First steel pedal; 9. Transition platform; 901. Second steel pedal; 10. Connecting parts; 1001. Guardrail pin connection hole; 1002. Guardrail cross brace; 1003. Guardrail post; 1004. Base; 1005. Square steel; 1006. Square steel pin connection hole; 11. Working platform; 1101. Third steel pedal; 12. Hoist. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In this specification, identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings of this utility model, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions towards or away from a specific component, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more.

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This illustration shows a structural schematic diagram of a steel box girder welding and painting operation platform provided in an exemplary embodiment of the present invention. The steel box girder welding and painting operation platform is installed on a steel box girder 1. The steel box girder welding and painting operation platform includes: a traveling component 2, which is located on the top surface of the steel box girder 1 and is capable of moving longitudinally along the top surface of the steel box girder 1; an extension section 5, which is connected to the side of the traveling component 2 near the flange 101 of the steel box girder 1, with a portion located above the flange 101 and the other portion extending to the outside of the flange 101; a reciprocating passage, the top of which is connected to the side of the extension section 5 away from the traveling component 2, with a portion located above the flange 101 and the other portion located below the flange 101; and a construction platform, which includes a transition platform 9 connected to the bottom end of the reciprocating passage. The transition platform 9 is located on the side of the reciprocating passage near the flange 101. The transition platform 9 is connected to a working platform 11 via a connector 10. The working platform 11 is equipped with a hoist 12 to facilitate welding or painting operations on the flange 101.

[0023] In one example, the extension section 5 is a steel structure. In actual working conditions, the length of the extension section 5 can be changed to adapt to the steel box girder 1 structure with different flange 101 lengths.

[0024] In this embodiment, the walking component 2 is located on the top surface of the steel box girder 1 and can move flexibly along the longitudinal direction of the steel box girder 1. Its position can be adjusted according to the work area without repeated disassembly and assembly, which greatly improves the flexibility of construction. The top of the reciprocating passage is connected to the extension section 5, providing a safe passage for construction personnel and tools and avoiding work interruption. The hoist 12 on the work platform 11 can adjust its height and position to efficiently complete welding or painting operations on different flanges 101.

[0025] For details, please refer to Figure 1 and Figure 2 The walking assembly 2 includes: a walking frame 202, which has a first extension 203 on the side near the flange 101 for easy connection with the extension section 5; and a walking wheel 201, which is installed at the bottom of the walking frame 202 and is capable of moving longitudinally along the top surface of the steel box girder 1; wherein, the walking frame 202 is also provided with a counterweight block 3 to prevent the steel box girder welding and painting operation platform from becoming unstable during the installation process and subsequent use.

[0026] In one example, the walking frame 202 is welded from I-beams.

[0027] In this embodiment, the counterweight block 3 added to the walking frame 202 can increase the overall weight of the walking component 2, balance the force on the overall operating platform during installation, avoid uneven load caused by component connection during installation, and resist the influence of external forces during operation in subsequent use, effectively prevent the steel box girder welding and spraying operating platform from becoming unstable, and ensure construction safety.

[0028] For more details, see [link to relevant documentation]. Figure 1 The extension section 5 is bolted to the first protrusion 203 via the flange 4.

[0029] Specifically, see Figure 1 The reciprocating passage includes: a connecting section ladder 6, the top of which has a second extension 601 for easy connection with the extension section 5, the second extension 601 being bolted to the extension section 5 via a flange 4; and a plurality of standard section ladders 7, the top of the uppermost standard section ladder 7 being bolted to the bottom of the connecting section ladder 6 via a flange 4, the plurality of standard section ladders 7 being bolted together via flanges 4, and a first steel tread 8 being laid on the lowermost standard section ladder 7.

[0030] In this embodiment, multiple standard segment ladders 7 are bolted together in sequence by flanges 4. The number can be flexibly increased or decreased according to the height of the flange 101 of the steel box girder 1 to adapt to the operation requirements of steel box girders 1 of different sizes. The first steel tread 8 laid on the bottom standard segment ladder 7 provides a safe stepping surface for construction workers to avoid slipping while passing through, and can also temporarily store machinery and equipment.

[0031] More specifically, see Figure 1The first end of the transition platform 9 is welded to the lowest standard section ladder 7, and the second end of the transition platform 9 is pinned to the connector 10 by a pin. A second steel tread 901 is laid on the transition platform 9 for construction workers to step on and for storing machinery and equipment.

[0032] In one example, the transition platform 9 is entirely composed of welded square steel pipes. When the width of the steel box girder 1 needs to be increased according to the working conditions, the overall length of the construction platform can be adjusted by increasing the length of the transition platform 9.

[0033] Further, see Figure 1 and Figure 3 The connector 10 includes: a square steel 1005, on both sides of which are provided with square steel pin connection holes 1006, which are respectively pinned to the transition platform 9 and the working platform 11 by pins; a base 1004, which is welded to the square steel 1005; and a guardrail post 1003, which is installed on the base 1004, with guardrail pin connection holes 1001 on both sides of its extended area, which are pinned to the guardrail cross brace 1002 by pins.

[0034] In this embodiment, the square steel pin connection holes 1006 on both sides of the square steel 1005 are connected to the transition platform 9 and the working platform 11 respectively by pins, which not only ensures the connection of the three parties is stable, but also takes into account the convenience of disassembly and adjustment in the later stage; the base 1004 is welded to the square steel 1005 to provide a stable installation foundation for the guardrail post 1003 and prevent the guardrail from falling off due to insecure installation; the guardrail post 1003 is fixed by the base 1004, and the guardrail pin connection holes 1001 on both sides are connected to the guardrail cross brace 1002 by pins, which can quickly build the protective guardrail and prevent construction workers from falling when working on the edge of the platform.

[0035] Furthermore, see Figure 1 The work platform 11 is provided with a third steel tread 1101, and the hoist 12 is set on the third steel tread 1101.

[0036] In one example, the work platform 11 is welded from square steel pipes, and the length of the work platform 11 and the arrangement of the guardrails are determined according to the actual width of the steel box girder 1.

[0037] It is worth mentioning that the walking component 2, extension section 5, reciprocating passage, and construction platform are all symmetrically distributed about the centerline of the steel box girder 1. From a structural stress perspective, the symmetrical distribution allows the weight of each component and the working load to be evenly distributed on both sides of the steel box girder 1, avoiding platform tilting or local overload of the steel box girder 1 due to uneven weight distribution on one side, effectively preventing the risk of instability during installation and use. In particular, the ballast block 3 of the walking component 2 further strengthens the overall balance. In addition, the symmetrical design can simultaneously cover the flanges 101 on both sides of the steel box girder 1, allowing welding and painting operations on both sides to be carried out simultaneously without frequent adjustments to the platform position, reducing the time for connecting construction procedures.

[0038] Next, the working principle of a steel box girder welding and spraying operation platform involved in the embodiments of this utility model will be explained.

[0039] First, the platform installation foundation is built. The walking component 2, which is welded from steel, is placed on the top surface of the steel box girder 1. The walking wheels 201 at the bottom of its walking frame 202 can move longitudinally along the steel box girder 1. The counterweights 3 on the frame can balance the force and prevent instability, providing a stable and flexible moving foundation for the platform. Next, the extension section 5 made of steel is bolted to the first extension 203 of the traveling frame 202 through the flange 4. The length can also be adjusted to adapt to steel box girders 1 with different flange 101 lengths. Subsequently, the reciprocating passage is assembled. Using flange 4 as a connector, the second extension 601 of the connecting section ladder 6 is bolted to the extension section 5. Then, multiple standard section ladders 7 are bolted to the bottom of the connecting section ladder 6 in sequence. The number of section ladders can be increased or decreased according to the height of flange 101. The first steel tread 8 laid on the bottom standard section ladder 7 is for construction personnel to pass through and store equipment. Finally, the lowest standard section ladder 7 is welded to one end of the transition platform 9, and the other end is connected to the connector 10 with pins. Its second steel step 901 serves as both passage and storage. The square steel 1005 of the connector 10 is connected to the transition platform 9 and the working platform 11 by pins. The guardrail posts 1003 on the base 1004, together with the guardrail cross braces 1002, form protection. The third steel step 1101 of the working platform 11 is equipped with a hoist 12, which can adjust the height and position to complete the welding or painting of the flange 101.

[0040] In summary, this technical solution can be efficiently applied to the welding and painting of the bottom and sides of steel box girders. By adjusting the length of the working platform and extension section, it can accommodate steel box girders of different widths. The use of a walking assembly allows for free movement along the longitudinal direction of the main beam, significantly reducing the need for fixed support structures and crane usage, thus effectively lowering construction costs. Furthermore, the modular design of the construction platform facilitates rapid installation, disassembly, and repeated use. The overall structure is symmetrically arranged about the centerline of the steel box girder, and the guardrail configuration can be adjusted according to the width of the box girder, ensuring stable operation and convenient construction, providing sufficient safety and economy for the construction site.

[0041] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A steel box girder welding and spraying operation platform, which is installed on a steel box girder (1), characterized in that, The steel box girder welding and spraying operation platform includes: The walking component (2) is located on the top surface of the steel box girder (1) and is capable of moving longitudinally along the top surface of the steel box girder (1); The extension (5) is connected to one side of the walking assembly (2) near the flange (101) of the steel box girder (1), with a portion located above the flange (101) and the other portion extending to the outside of the flange (101). A reciprocating passage, the top of which is connected to the side of the extension (5) away from the traveling assembly (2), a portion of which is located above the flange (101) and the other portion of which is located below the flange (101); and The construction platform includes a transition platform (9) connected to the bottom of the reciprocating passage. The transition platform (9) is located on the side of the reciprocating passage close to the flange (101). The transition platform (9) is connected to a working platform (11) via a connector (10). The working platform (11) is equipped with a hoist (12) to facilitate welding or painting operations on the flange (101).

2. The steel box girder welding and spraying operation platform according to claim 1, characterized in that, The walking component (2) includes: The walking frame (202) has a first extension (203) on the side near the flange (101) for easy engagement with the extension (5); and The traveling wheel (201) is installed at the bottom of the traveling frame (202) and is capable of moving longitudinally along the top surface of the steel box girder (1); The walking frame (202) is also equipped with a counterweight (3) to prevent the steel box girder welding and spraying operation platform from becoming unstable during installation and subsequent use.

3. The steel box girder welding and spraying operation platform according to claim 2, characterized in that, The extension section (5) is bolted to the first protrusion (203) via a flange (4).

4. The steel box girder welding and spraying operation platform according to claim 1, characterized in that, The round-trip passage includes: A connecting section ladder (6) has a second protrusion (601) at its top for easy connection with the extension section (5), the second protrusion (601) being bolted to the extension section (5) via a flange (4); and Multiple standard section ladders (7) are connected to the bottom of the connecting section ladder (6) by a flange (4) at the top of the uppermost standard section ladder (7). Multiple standard section ladders (7) are connected to each other by flanges (4). A first steel tread (8) is laid on the lowermost standard section ladder (7).

5. The steel box girder welding and spraying operation platform according to claim 4, characterized in that, The first end of the transition platform (9) is welded to the lowest standard inter-segment ladder (7), the second end of the transition platform (9) is pinned to the connector (10) by a pin, and a second steel tread (901) is laid on the transition platform (9).

6. The steel box girder welding and spraying operation platform according to claim 1, characterized in that, The connector (10) includes: Square steel (1005) is provided with square steel pin shaft connection holes (1006) on both sides. The square steel pin shaft connection holes (1006) on both sides are connected to the transition platform (9) and the working platform (11) respectively by pins. A base (1004), which is welded to the square steel (1005); and The guardrail post (1003) is installed on the base (1004), and guardrail pin connection holes (1001) are provided on both sides of the extended area. The guardrail pin connection holes (1001) are connected to the guardrail cross brace (1002) by pins.

7. The steel box girder welding and spraying operation platform according to claim 1, characterized in that, The work platform (11) is provided with a third steel tread (1101), and the hoist (12) is set on the third steel tread (1101).

8. The steel box girder welding and spraying operation platform according to claim 1, characterized in that, The walking components (2), extension section (5), reciprocating passage, and construction platform are symmetrically distributed about the centerline of the steel box girder (1).

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