Movable operation platform for welding construction of steel box girder bridge position

Abstract

The utility model relates to a movable operation platform for welding construction of a steel box girder bridge position, and belongs to the technical field of bridge construction. Comprising a platform body and a sliding assembly, the platform body is of a [-shaped structure, the platform body comprises a top face section and a vertical section perpendicular to the top face section, and the bottom of the vertical section is sequentially connected with an inclined face section and a straight face section; the sliding assembly comprises a pulley which is obliquely fixed between the top surface section and the vertical section.

Description

Technical Field

[0001] This application relates to the technical field of bridge construction, and particularly to a mobile working platform for on-site welding construction of steel box girders. Background Art

[0002] Currently, on-site welding of steel box girders is an important process in the installation of steel box girders of suspension bridges. It is necessary to perform full-penetration welding on the entire circumferential joint of the butt joint of each adjacent steel box girder. The welding operation at the bottom of the girder requires workers to work at the bottom of the girder, and a platform that is safe, reliable, and can catch and prevent fire is needed. In the past, on-site welding usually used a bridge inspection vehicle for construction at the bottom of the girder. In this method, it needs to be installed first before it can be used, and it cannot operate synchronously with the installation of steel box girders, resulting in low efficiency. Moreover, it is extremely vulnerable to weather conditions such as strong winds, rain, and snow, and cannot block the molten beads and welding slag generated during welding, posing a great fire hazard. Summary of the Invention

[0003] Embodiments of this application provide a mobile working platform for on-site welding construction of steel box girders to solve the problems of low efficiency and potential safety hazards when using a bridge inspection vehicle for on-site welding of steel box girders in related technologies.

[0004] Embodiments of this application provide a mobile working platform for on-site welding construction of steel box girders, including:

[0005] A platform body, the platform body has a "C" - shaped structure, the platform body includes a top surface section and a vertical section perpendicular to the top surface section, and the bottom of the vertical section is sequentially connected with an inclined section and a straight section;

[0006] A sliding component, the sliding component includes pulleys obliquely fixed between the top surface section and the vertical section.

[0007] In some embodiments, the sliding component further includes a diagonal brace with one end fixed to the end of the top surface section and the other end fixed to the vertical section, and the pulley is rotatably connected to the diagonal brace.

[0008] In some embodiments, connecting rods are provided between the top surface section and the diagonal brace, and between the vertical section and the diagonal brace.

[0009] In some embodiments, the diagonal brace is welded and fixed to the top surface section and the vertical section.

[0010] In some embodiments, a winch is connected to the platform body.

[0011] In some embodiments, the platform body includes I - shaped steel and angle steel fixed to the I - shaped steel, and a wire mesh is provided on the side wall of the platform body.

[0012] In some embodiments, a fireproof cloth is laid on the platform body.

[0013] In some embodiments, an arc chamfer is provided at the edge of the end of the pulley.

[0014] In some embodiments, a plurality of pulleys are arranged at intervals along the length direction of the inclined strut, and the inclined strut and the pulley are connected by a bearing.

[0015] In some embodiments, both the pulley and the inclined strut are made of 45# steel.

[0016] The beneficial effects brought by the technical solution provided by this application include:

[0017] The embodiment of this application provides a mobile working platform for steel box girder bridge position welding construction, which includes a platform body and a sliding component. The platform body has a "匚"-shaped structure. The platform body includes a top surface section and a vertical section perpendicular to the top surface section. The bottom of the vertical section is successively connected with an inclined surface section and a straight surface section; the sliding component includes a pulley obliquely fixed between the top surface section and the vertical section.

[0018] In actual use, the platform body has a "匚"-shaped structure. This semi-enclosed structure can surround and fix the steel box girder, limiting the platform body on the steel box girder. Specifically, the platform body includes a top surface section and a vertical section perpendicular to the top surface section. The bottom of the vertical section is successively connected with an inclined section and a straight section. The length of the top surface section is longer than the length of the steel box girder nozzle in the horizontal direction, enabling the platform body to surround the steel box girder. And a vertical section is vertically arranged at the top surface section, and the bottom of the vertical section is connected with an inclined section to match the structural characteristics of the steel box girder. And a straight section is connected and arranged at the inclined section, that is, both ends of the straight section are respectively connected to the two inclined sections. This setting facilitates the use of the construction platform for on-site welding of the steel box girder. Compared with operating through a bridge inspection vehicle, using this construction platform for construction allows construction workers to perform construction operations on various positions of the steel box girder through the platform body. When using a bridge inspection vehicle for construction operations, it is necessary to constantly change positions for operation, and there are operation blind spots. The construction range of the construction platform of this application is larger, which helps to improve construction efficiency. And this semi-enclosed setting can enhance the structural stability, avoid being affected by bad weather, and can expand the blocking range of molten beads and welding slag generated by welding, avoiding potential safety hazards. At the same time, this mobile operation platform also includes a sliding component. The sliding component includes a pulley obliquely fixed between the top surface section and the vertical section. The pulley is obliquely arranged between the top surface section and the vertical section of the platform body, enabling the platform body to slide on the inclined surface of the steel box girder nozzle through the pulley, that is, enabling the platform body to move along the longitudinal direction of the bridge, facilitating the movement of the construction platform, and thus facilitating the on-site welding construction operation of each section of the steel box girder, improving the flexibility of the construction platform, and further improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of the use situation of the operation platform provided by the embodiment of the present application;

[0021] Figure 2 is Figure 1 Cross-sectional view of the platform body in along the A-A direction;

[0022] Figure 3 is Figure 1 Cross-sectional view of the platform body in along the B-B direction;

[0023] Figure 4 Front view of the pulley and brace rod

[0024] Figure 5 Side view of the pulley and brace rod

[0025] Reference numerals

[0026] 1. Platform body; 2. Connecting rod; 3. Pulley; 4. Brace rod; 5. Wire mesh; 11. Top surface section; 12. Vertical section; 13. Inclined section; 14. Straight section; 101. I-beam; 102. Angle steel Specific implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application

[0028] The embodiments of the present application provide a mobile working platform for steel box girder bridge position welding construction, which can solve the problems of low efficiency and potential safety hazards during steel box girder bridge position welding using a bridge inspection vehicle in the related art

[0029] See Figure 1 As shown, the embodiments of the present application provide a mobile working platform for steel box girder bridge position welding construction, including a platform body 1 and a sliding component. The platform body 1 has a "C" - shaped structure. The platform body 1 includes a top surface section 11 and a vertical section 12 perpendicular to the top surface section 11. The bottom of the vertical section 12 is successively connected with an inclined section 13 and a straight section 14. The sliding component includes a pulley 3 obliquely fixed between the top surface section 11 and the vertical section 12

[0030] In actual use, the platform body 1 has a "匚"-shaped structure. This semi-enclosed structure can surround and fix the steel box girder, positioning the platform body 1 on the steel box girder. Specifically, the platform body 1 includes a top surface section 11 and a vertical section 12 perpendicular to the top surface section 11. The bottom of the vertical section 12 is successively connected to an inclined surface section 13 and a straight surface section 14. The length of the top surface section 11 is longer than the length of the steel box girder nozzle in the horizontal direction, enabling the platform body 1 to surround the steel box girder. A vertical section 12 is vertically arranged at the top surface section 11, and the bottom of the vertical section 12 is connected to the inclined surface section 13 to match the structural characteristics of the steel box girder. A straight surface section 14 is connected and arranged at the inclined surface section 13, that is, both ends of the straight surface section 14 are respectively connected to the two inclined surface sections 13. This setting facilitates the use of the construction platform for on-site welding of the steel box girder. Compared with operating through a bridge inspection vehicle, using this construction platform for construction enables construction workers to perform construction operations on various positions of the steel box girder through the platform body 1. When operating through a bridge inspection vehicle, it is necessary to constantly change positions for operation, and there are operation blind spots. The construction range of the construction platform of this application is larger, which helps to improve construction efficiency. Moreover, this semi-enclosed setting can enhance the structural stability, avoid being affected by bad weather, and can expand the blocking range of molten beads and welding slag generated during welding, avoiding potential safety hazards. At the same time, the mobile operation platform further includes a sliding component. The sliding component includes a pulley 3 obliquely fixed between the top surface section 11 and the vertical section 12. The pulley 3 is obliquely arranged between the top surface section 11 and the vertical section 12 of the platform body 1, enabling the platform body 1 to slide on the inclined surface of the steel box girder nozzle through the pulley 3, that is, enabling the platform body 1 to move along the bridge longitudinal direction, facilitating the movement of the construction platform, and thus facilitating the on-site welding construction operation of each section of the steel box girder, improving the flexibility of the construction platform, and further improving construction efficiency.

[0031] In some alternative embodiments, the platform body 1 is connected to a winch. By driving the winch, the platform body 1 can move on the inclined surface of the steel box girder nozzle with the help of the pulley 3. In actual use, before hoisting the steel box girder, the mobile operation platform can be set on the steel box girder. After it is semi-enclosed on the steel box girder, the steel box girder and the mobile operation platform can be hoisted as a whole to facilitate subsequent construction.

[0032] In some alternative embodiments, as Figure 1 shown, the sliding component further includes a diagonal brace 4 with one end fixed to the end of the top surface section 11 and the other end fixed to the vertical section 12. The pulley 3 is rotatably connected to the diagonal brace 4. Connecting rods 2 are arranged between the top surface section 11 and the diagonal brace 4, and between the vertical section 12 and the diagonal brace 4.

[0033] One end of the diagonal brace 4 is fixed to the vertical section 12, and the other end is fixed to the top section 11. That is, the top section 11 and the vertical section 12 are perpendicular, forming a right-angle structure, and the diagonal brace 4 is connected to the hypotenuse of the right angle formed by the top section 11 and the vertical section 12. The pulley 3 is rotatably connected to the diagonal brace 4, which can facilitate the fixation of the pulley 3 and ensure the reliability of the platform body 1 moving on the wind nozzle inclined surface of the steel box girder by relying on the pulley 3. In addition, connecting rods 2 are provided between the top section 11 and the diagonal brace 4, and between the vertical section 12 and the diagonal brace 4. The provision of the connecting rods 2 can better fix the platform body 1 to the diagonal brace 4, thereby ensuring the reliability and stability of the platform body 1 being able to move by relying on the pulley 3. In some optional embodiments, the diagonal brace 4 is welded and fixed to the top surface section 11 and the vertical section 12. The arrangement of welding and fixing the diagonal brace 4 to the top surface section 11 and the vertical section 12 can ensure the reliability and stability of the fixation of the diagonal brace 4 to the top surface section 11 and the vertical section 12.

[0034] In some optional embodiments, such as Figure 1 、 Figure 4 and Figure 5 As shown, the pulley 3 and the diagonal brace 4 are both made of 45-gauge steel. This ensures structural strength and thus overall structural stability. In actual use, multiple pulleys 3 are spaced apart along the length of the diagonal brace 4, and the diagonal brace 4 and pulley 3 are connected via bearings. The presence of multiple pulleys 3, spaced apart along the length of the diagonal brace 4, ensures smooth and reliable sliding of the platform body 1 with the aid of the pulleys 3, ensuring movement efficiency. The diagonal brace 4 and pulley 3 are connected via bearings, ensuring smooth rolling of the pulleys 3.

[0035] In some optional embodiments, the end edge of the pulley 3 is provided with a circular chamfer. The setting of the circular chamfer can prevent the pulley 3 from scratching the wind nozzle of the steel box girder when rolling along the wind nozzle inclined surface of the steel box girder, thereby preventing the steel box girder from being damaged.

[0036] In some embodiments, as Figures 1 to 3 As shown, the platform body 1 includes an I-beam 101 and an angle steel 102 fixed to the I-beam 101, and the side walls of the platform body 1 are provided with a wire mesh 5. The platform body 1 is structurally surrounded on three sides, with its top surface exposed. The bottom and side surfaces are formed by welding the I-beam 101 and the angle steel 102 fixed to the I-beam 101 together. This structure is simple, stable, and low in cost. At the same time, the wire mesh 5 is provided on the side walls of the platform body 1, which can provide good safety protection for construction workers.

[0037] In some optional embodiments, a fireproof cloth is laid on the platform body 1. The fireproof cloth can block the molten beads and welding slag generated during welding at the bridge position, avoid the occurrence of fire, and improve the safety of construction.

[0038] In summary, the mobile working platform includes a platform body 1 and a sliding component. The platform body 1 is in a "C" - shaped structure. The platform body 1 includes a top surface section 11 and a vertical section 12 perpendicular to the top surface section 11. At the bottom of the vertical section 12, an inclined section 13 and a straight section 14 are successively connected. The sliding component includes a pulley 3 obliquely fixed between the top surface section 11 and the vertical section 12.

[0039] In actual use, the platform body 1 is in a "C" - shaped structure. This semi - enclosed structure can surround and fix the steel box girder, and position the platform body 1 on the steel box girder. Specifically, the platform body 1 includes a top surface section 11 and a vertical section 12 perpendicular to the top surface section 11. At the bottom of the vertical section 12, an inclined section 13 and a straight section 14 are successively connected. The length of the top surface section 11 is longer than the length of the steel box girder nozzle in the horizontal direction, which enables the platform body 1 to surround the steel box girder. And a vertical section 12 is vertically arranged at the top surface section 11, and an inclined section 13 is connected to the bottom of the vertical section 12 to match the structural characteristics of the steel box girder. And a straight section 14 is connected and arranged at the inclined section 13, that is, both ends of the straight section 14 are respectively connected to two inclined sections 13. This setting facilitates the use of the construction platform for welding the steel box girder in the bridge position. Compared with operating through a bridge inspection vehicle, using this construction platform for construction enables construction workers to perform construction operations on various positions of the steel box girder through the platform body 1. When operating through a bridge inspection vehicle, it is necessary to constantly change positions for operation, and there are operation blind spots. The construction range of the construction platform in this application is larger, which helps to improve the construction efficiency. And this semi - enclosed setting can enhance the structural stability, avoid being affected by bad weather, and can expand the blocking range of molten beads and welding slag generated by welding, avoiding potential safety hazards. At the same time, the mobile working platform further includes a sliding component. The sliding component includes a pulley 3 obliquely fixed between the top surface section 11 and the vertical section 12. The pulley 3 is obliquely arranged between the top surface section 11 and the vertical section 12 of the platform body 1, which enables the platform body 1 to slide on the inclined surface of the steel box girder nozzle through the pulley 3, that is, enables the platform body 1 to move along the bridge longitudinal direction, facilitating the movement of the construction platform, thus facilitating the bridge - position welding construction operation of each section of the steel box girder, improving the flexibility of the construction platform, and further improving the construction efficiency.

[0040] The platform body 1 is connected with a winch. By driving the winch, the platform body 1 can move on the inclined surface of the steel box girder nozzle with the help of the pulley 3. In actual use, before hoisting the steel box girder, the mobile working platform can be set on the steel box girder. After it is semi - enclosed on the steel box girder, the overall hoisting operation of the steel box girder and the mobile working platform can be carried out to facilitate subsequent construction.

[0041] The sliding assembly also includes a diagonal brace 4 with one end fixed to the end of the top section 11 and the other end fixed to the vertical section 12. The pulley 3 is rotatably connected to the diagonal brace 4. A connecting rod 2 is provided between the top section 11 and the diagonal brace 4, and between the vertical section 12 and the diagonal brace 4.

[0042] One end of the diagonal brace 4 is fixed to the vertical section 12, and the other end is fixed to the top section 11. The pulley 3 is rotatably connected to the diagonal brace 4, which facilitates the fixation of the pulley 3 and ensures the reliability of the platform body 1 moving on the inclined surface of the wind nozzle of the steel box girder by relying on the pulley 3. In addition, connecting rods 2 are provided between the top section 11 and the diagonal brace 4, and between the vertical section 12 and the diagonal brace 4. The provision of the connecting rods 2 can better fix the platform body 1 to the diagonal brace 4, thereby ensuring the reliability of the platform body 1 moving by relying on the pulley 3. In some optional embodiments, the diagonal brace 4 is welded to the top section 11 and the vertical section 12. The provision of welding the diagonal brace 4 to the top section 11 and the vertical section 12 can ensure the reliability and stability of the fixation of the diagonal brace 4 to the top section 11 and the vertical section 12.

[0043] Multiple pulleys 3 are spaced apart along the length of the diagonal brace 4, and the diagonal brace 4 and the pulleys 3 are connected via bearings. The provision of multiple pulleys 3, spaced apart along the length of the diagonal brace 4, ensures smooth and reliable sliding of the platform body 1 with the aid of the pulleys 3, thus ensuring efficient movement. The bearings connecting the diagonal brace 4 and the pulleys 3 ensure smooth rolling of the pulleys 3.

[0044] The edge of the end of the pulley 3 is provided with a circular chamfer. The setting of the circular chamfer can prevent the pulley 3 from scratching the wind nozzle of the steel box girder and damaging the steel box girder when rolling along the wind nozzle inclined surface of the steel box girder.

[0045] A fireproof cloth is set up on the platform body 1. The fireproof cloth can block the molten beads and welding slag generated during welding at the bridge position, avoid the occurrence of fire, and improve the safety of construction.

[0046] The construction platform of the present application helps to improve construction efficiency, and this semi-enclosed setting can enhance the stability of the structure, avoid the influence of bad weather, and expand the barrier range for molten beads and welding slag generated by welding, avoiding the formation of safety hazards.

[0047] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply 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 this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0048] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0049] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A mobile work platform for welding construction of steel box girder bridges, characterized in that: Comprising: A platform body (1), the platform body (1) having a "C"-shaped structure, the platform body (1) including a top surface section (11) and a vertical section (12) perpendicular to the top surface section (11), and the bottom of the vertical section (12) being sequentially connected to an inclined surface section (13) and a straight surface section (14); A sliding assembly, the sliding assembly including a pulley (3) obliquely fixed between the top surface section (11) and the vertical section (12).

2. A mobile working platform for steel box girder bridge position welding construction according to claim 1, characterized in that: The sliding assembly further includes a diagonal strut (4) with one end fixed to the end of the top surface section (11) and the other end fixed to the vertical section (12), and the pulley (3) is rotatably connected to the diagonal strut (4).

3. A mobile working platform for steel box girder bridge position welding construction according to claim 2, characterized in that: Connecting rods (2) are provided between the top surface section (11) and the diagonal strut (4), and between the vertical section (12) and the diagonal strut (4).

4. A mobile working platform for steel box girder bridge position welding construction according to claim 3, characterized in that: The diagonal strut (4) is welded and fixed to the top surface section (11) and the vertical section (12).

5. A mobile working platform for steel box girder bridge position welding construction according to claim 1, characterized in that: The platform body (1) is connected to a winch.

6. A mobile working platform for steel box girder bridge position welding construction according to claim 1, characterized in that: The platform body (1) includes an I-beam (101) and an angle steel (102) fixed to the I-beam (101), and a wire mesh (5) is provided on the side wall of the platform body (1).

7. A mobile working platform for steel box girder bridge position welding construction according to claim 1, characterized in that: A fireproof cloth is laid on the platform body (1).

8. A mobile working platform for steel box girder bridge position welding construction according to claim 1, characterized in that: An arc chamfer is provided at the edge of the end of the pulley (3).

9. A mobile working platform for steel box girder bridge position welding construction according to claim 2, characterized in that: A plurality of pulleys (3) are arranged at intervals along the length direction of the diagonal strut (4), and the diagonal strut (4) and the pulley (3) are connected by bearings.

10. A mobile working platform for steel box girder bridge position welding construction according to claim 2, characterized in that: Both the pulley (3) and the diagonal strut (4) are made of 45# steel.

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