Bridge steel tower outer wall welding working platform

Abstract

The utility model belongs to the technical field of bridge construction, and solves the problem that when bridge steel columns are connected, the steps of mounting and dismounting a welding working platform are complicated, so that the construction speed is reduced. According to the bridge steel tower outer wall welding working platform, the inner ring edge and the outer ring edge of an annular walkway are connected with the lower end of an upper frame through a plurality of vertical connecting rods arranged at intervals, a plurality of vertical supporting rods are annularly arranged at intervals with the center point of the upper frame as the circle center, and the lower ends of the vertical supporting rods abut against inner rib plates of upper steel columns to be welded; a steel column to be welded can be contained in the inner ring area of the annular aisle, the edge of the inner ring of the annular aisle extends upwards to be provided with an inner ring guardrail, and the height of the inner ring guardrail is smaller than the height difference value obtained by subtracting the single-section steel column from the vertical connecting rods. The device can solve the problem that a plurality of connecting pieces need to be welded on the outer side of a steel column when a working platform is arranged, and the annular walkway completely surrounds the steel column, so that a constructor can perform multi-directional welding construction.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, and in particular relates to a welding work platform for the outer wall of a bridge steel tower. Background Art

[0002] In the construction of bridge steel columns, it is usually necessary to stack multiple single-section steel columns (single-section steel columns with steel column inner reinforcement plates welded inside) and weld the butt joints at high places.

[0003] Since the steel column is thick, welding takes a long time and is done at high altitude. When welding a single-section steel column installed later, a welding work platform needs to be set up. The main methods are to weld angle steel brackets on the steel column body and support the standardized welding work platform through the angle steel brackets, or to weld lifting ears on the steel column body and set up a non-standardized welding work platform.

[0004] Both methods require temporary measures such as welding supports for the welding work platform on the column body, and the temporary supports need to be removed later. The installation and removal steps of the welding work platform are also relatively complicated, which reduces the construction speed. Utility Model Content

[0005] In order to solve at least one of the above technical problems existing in the prior art, the utility model provides a bridge steel tower outer wall welding work platform.

[0006] The utility model is implemented by the following technical scheme: a bridge steel tower outer wall welding work platform, including a circular walkway, an upper frame, vertical connecting rods and vertical support rods; the inner circle and outer circle edges of the circular walkway are connected to the lower end of the upper frame through a plurality of vertical connecting rods arranged at intervals, the plurality of vertical support rods are arranged in a circular spaced relationship with the center point of the upper frame as the center of the circle, and the lower ends of the vertical support rods are abutted against the inner ribs of the upper steel columns to be welded; the inner circle area of ​​the circular walkway can accommodate the steel columns to be welded, the inner circle edge of the circular walkway is extended upwardly with an inner circle guardrail, the height of the inner circle guardrail is less than the height difference of the vertical connecting rod minus the height of the single-section steel column, and the outer circle of the circular walkway is extended upwardly with an outer circle guardrail; a ladder for construction workers to go up and down is connected between the circular walkway and the upper frame.

[0007] Preferably, the upper frame includes a center disk, spokes, a frame inner ring and a frame outer ring. A plurality of spokes extend outward from the center disk. The frame inner ring and the frame outer ring are sequentially surrounded by the outside of the center disk and are connected and fixed to the center disk via the spokes. The frame inner ring, the frame outer ring and the spokes form an upper construction entrance and exit.

[0008] Preferably, the center points of the frame inner ring, the frame outer ring and the center disk coincide with each other, the angles between adjacent spokes are consistent, and the center points of the inner ring and the outer ring of the annular walkway coincide with each other.

[0009] Preferably, the shapes of the inner ring of the frame, the outer ring of the frame, and the inner ring and outer ring of the annular walkway are all regular octagons, and the connection points between the spokes and the inner ring of the frame and the outer ring of the frame are the vertices of the inner ring of the frame and the outer ring of the frame.

[0010] Preferably, the outer ring guardrail covers the outer facade formed by the outer ring edge of the annular walkway and the outer ring edge of the frame, and the height of the vertical connecting rod is 0.5m-1.5m higher than the height of the single-section steel column.

[0011] Preferably, the height of the vertical brace is 0.001m-0.02m greater than the distance from the inner rib surface of the steel column to the upper edge of the steel column.

[0012] Preferably, a lower construction entrance and exit is provided on one of the outer ring guardrails, and a construction ladder is provided on the outside of the steel column. The construction ladder includes an elevator car and a multi-section assembled elevator track. The elevator track is assembled according to the height of the welded and assembled steel column. The side of the elevator track close to the steel column is welded and fixed to the steel column through a fixing rod, and the elevator car can be raised to the position of the lower construction entrance and exit.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] This device is supported on the inner rib plate of the upper steel column to be welded by vertical support rods. By sinking the circular walkway to the outside of the steel column and the height of the vertical connecting rod being greater than the height of the single-section steel column, the constructor can weld the joint of two sections of the single-section steel column on the circular walkway; the height of the inner circle guardrail is less than the height difference between the vertical connecting rod and the single-section steel column, so the inner circle guardrail will not block the joint of the two sections of the single-section steel column. This device can solve the problem of welding more connectors on the outside of the steel column when setting up the working platform, and the circular walkway completely surrounds the steel column, so the constructor can weld in multiple directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 Schematic diagram of the installation of the overall structure of this embodiment;

[0017] Figure 2 is an exploded schematic diagram of a part of the structure of this embodiment;

[0018] Figure 3 is a schematic diagram of the structure above the circular walkway of this embodiment;

[0019] Figure 4 is a cross-sectional view of this embodiment (without the construction ladder);

[0020] Figure 5 It is a cross-sectional view of a single steel column.

[0021] In the figure: 1-annular walkway; 2-upper frame; 2.1-center plate; 2.2-spokes; 2.3-inner ring of frame; 2.4-outer ring of frame; 3-vertical connecting rod; 4-vertical support rod; 5-inner ring guardrail; 6-outer ring guardrail; 7-ladder; 8.1-elevator car; 8.2-elevator track; 8.3-fixing rod; 9-steel column; 9.1-inner stiffener plate. DETAILED DESCRIPTION

[0022] Combined with the drawings in the embodiments of the utility model, the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention. It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0024] The utility model provides an embodiment:

[0025] like Figures 1 to 5As shown, a bridge steel tower outer wall welding work platform comprises a circular walkway 1, an upper frame 2, vertical connecting rods 3 and vertical support rods 4; the inner and outer edges of the circular walkway 1 are connected to the lower end of the upper frame 2 through a plurality of vertical connecting rods 3 arranged at intervals, and the plurality of vertical support rods 4 are arranged in annular intervals with the center point of the upper frame 2 as the center of the circle, and the lower ends of the vertical support rods 4 abut against the inner rib plate 9.1 of the upper steel column to be welded; the inner circle area of ​​the circular walkway 1 can accommodate the steel column to be welded, and an inner circle guardrail 5 is extended upward from the inner circle edge of the circular walkway 1, and the height of the inner circle guardrail 5 is less than the height difference of the vertical connecting rod 3 minus the height of the single-section steel column, and an outer circle guardrail 6 is extended upward from the outer circle of the circular walkway 1; a ladder 7 for construction workers to go up and down is connected between the circular walkway 1 and the upper frame 2.

[0026] In this embodiment, the upper frame 2 includes a center disk 2.1, spokes 2.2, a frame inner ring 2.3 and a frame outer ring 2.4. A plurality of spokes 2.2 extend outward from the center disk 2.1. The frame inner ring 2.3 and the frame outer ring 2.4 are sequentially surrounded by the outer side of the center disk 2.1 and are connected and fixed to the center disk 2.1 via the spokes 2.2. The frame inner ring 2.3, the frame outer ring 2.4 and the spokes 2.2 form an upper construction entrance and exit. The construction workers can be transported to the upper construction entrance and exit by a hanging basket and enter and exit the circular walkway 1 via the ladder 7.

[0027] The center points of the frame inner ring 2.3, the frame outer ring 2.4 and the center disk 2.1 coincide, the angles between adjacent spokes 2.2 are consistent, and the center points of the inner and outer rings of the circular walkway 1 coincide. The shapes of the frame inner ring 2.3, the frame outer ring 2.4, and the inner and outer rings of the circular walkway 1 are all regular octagons, and the connection points of the spokes 2.2 and the frame inner ring 2.3 and the frame outer ring 2.4 are the vertices of the frame inner ring 2.3 and the frame outer ring 2.4, ensuring the stability of the structure.

[0028] The outer ring guardrail 6 covers the facade formed by the outer ring edge of the circular walkway 1 and the edge of the outer ring 2.4 of the frame. The height of the vertical connecting rod 3 is 0.5m-1.5m higher than the height of the single-section steel column, so that the circular walkway 1 sinks to 0.5m-1.5m below the docking position of the two single-section steel columns 9, making it convenient for construction workers of different heights to squat or stand for welding construction.

[0029] The height of the vertical support rod 4 is 0.001m-0.02m greater than the distance from the inner rib surface of the steel column to the upper edge of the steel column, so that the frame inner ring 2.3 and the frame outer ring 2.4 have no contact with the upper edge of the single-section steel column 9, avoiding crushing the edge of the steel column 9.

[0030] A lower construction entrance and exit is arranged on one of the outer ring guardrails 6, and a construction ladder is arranged on the outer side of the steel column. The construction ladder includes an elevator car 8.1 and a multi-section assembled elevator track 8.2. The elevator track 8.2 is assembled according to the height of the welded and assembled steel column. The side of the elevator track 8.2 close to the steel column is welded and fixed to the steel column through a fixing rod 8.3. The elevator track 8.2 is assembled in sections. After welding two adjacent steel columns 9, another section of the elevator track 8.2 is assembled. At the same time, the newly assembled elevator track 8.2 is welded and fixed to the surface of the steel column 9. The elevator car 8.1 can be raised to the position of the lower construction entrance and exit, so that the constructors can quickly enter and exit the circular walkway 1.

[0031] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A bridge steel tower outer wall welding work platform, characterized in that: It comprises a circular walkway (1), an upper frame (2), a vertical connecting rod (3) and a vertical supporting rod (4); The inner and outer edges of the annular walkway (1) are connected to the lower end of the upper frame (2) through a plurality of vertical connecting rods (3) arranged at intervals, a plurality of vertical support rods (4) are arranged at intervals in the annular direction with the center point of the upper frame (2) as the center, and the lower ends of the vertical support rods (4) are in contact with the inner ribs of the upper steel columns to be welded; The inner circle area of ​​the circular walkway (1) can accommodate steel columns to be welded, and an inner circle guardrail (5) is provided on the inner circle edge of the circular walkway (1) extending upward, and the height of the inner circle guardrail (5) is less than the height difference between the vertical connecting rod (3) and the height of the single-section steel column. An outer circle guardrail (6) is extended upward from the outer circle of the circular walkway (1); and a ladder (7) for construction workers to go up and down is connected between the circular walkway (1) and the upper frame (2).

2. A bridge steel tower outer wall welding work platform according to claim 1, characterized in that: The upper frame (2) comprises a central disk (2.1), spokes (2.2), a frame inner ring (2.3) and a frame outer ring (2.4); a plurality of spokes (2.2) extend outward from the central disk (2.1); the frame inner ring (2.3) and the frame outer ring (2.4) are sequentially surrounded by the outer side of the central disk (2.1) and are connected and fixed to the central disk (2.1) via the spokes (2.2); the frame inner ring (2.3), the frame outer ring (2.4) and the spokes (2.2) form an upper construction entrance and exit.

3. A bridge steel tower outer wall welding work platform according to claim 2, characterized in that: The center points of the frame inner ring (2.3), the frame outer ring (2.4) and the center disk (2.1) coincide with each other, the angles between adjacent spokes (2.2) are consistent, and the center points of the inner ring and the outer ring of the annular walkway (1) coincide with each other.

4. A bridge steel tower outer wall welding work platform according to claim 3, characterized in that: The shapes of the inner circle (2.3) of the frame, the outer circle (2.4) of the frame, and the inner circle and outer circle of the circular walkway (1) are all regular octagons, and the connection points between the spokes (2.2) and the inner circle (2.3) of the frame, and the outer circle (2.4) of the frame are the vertices of the inner circle (2.3) of the frame, and the outer circle (2.4).

5. A bridge steel tower outer wall welding work platform according to claim 1, characterized in that: The outer ring guardrail (6) covers the outer facade formed by the outer ring edge of the circular walkway (1) and the edge of the outer ring of the frame (2.4), and the height of the vertical connecting rod (3) is 0.5m-1.5m higher than the height of the single-section steel column.

6. A bridge steel tower outer wall welding work platform according to claim 1, characterized in that: The height of the vertical support rod (4) is 0.001m-0.02m greater than the distance from the inner rib surface of the steel column to the upper edge of the steel column.

7. A bridge steel tower outer wall welding work platform according to claim 1, characterized in that: A lower construction entrance and exit is arranged on one of the outer ring guardrails (6), and a construction ladder is arranged on the outer side of the steel column. The construction ladder comprises an elevator car (8.1) and a multi-section assembled elevator track (8.2). The elevator track (8.2) is assembled according to the height of the welded and assembled steel column. The side of the elevator track (8.2) close to the steel column is welded and fixed to the steel column through a fixing rod (8.3), and the elevator car (8.1) can be raised to the position of the lower construction entrance and exit.

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