Movable hanging operation platform for welding steel box girder bridge guardrail

Abstract

The utility model discloses a movable hanging operation platform for welding a steel box girder bridge guardrail, which comprises a base arranged on a bridge in a sliding manner along the axial direction of the bridge, an overhanging box horizontally fixed at the top end of the base and a movable platform vertically connected to the end part of the overhanging box, a bottom supporting box is arranged at the bottom of the overhanging box, and supporting wheels are arranged at the bottom of the bottom supporting box. The supporting wheels make contact with the top faces of the steel guardrails, and a crawling ladder is arranged on the side, away from the cantilever box, of the base. And the effects of improving the convenience and safety of moving and transition of the operation platform and the construction efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of guardrail welding platforms, in particular to a movable hanging operation platform for welding steel box girder bridge guardrails. Background Technique

[0002] During the construction of steel box girder structure bridges, guardrails on both sides of the road are usually installed on the bridge deck of the box girder. The guardrails are generally steel guardrails and are welded to the steel box girder. Since the steel guardrails are located at the edge of the steel box girder, the welding of the weld between the outer side of the steel guardrail and the steel box girder is a high-altitude edge operation, and an outer high-altitude operation platform needs to be provided. The existing operation platform is directly supported on the guardrail and is connected by steel cables on the base platform that moves along the bridge. Although this connection form can ensure the stable support of the operation platform, when moving, it is necessary to push the base and the operation platform at the same time. Pushing the base alone cannot drive the operation platform to move, and there are potential safety hazards during the movement. Summary of the Invention

[0003] The technical problem to be solved by the utility model is that the movement of the operation platform requires pushing the base and the operation platform at the same time, the process is relatively cumbersome, and the form of steel cable connection has potential safety hazards during movement.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is: a movable hanging operation platform for welding steel box girder bridge guardrails, including a base slidably arranged on the bridge along the axial direction of the bridge, a cantilever box horizontally fixed at the top of the base, and a movable platform vertically connected to the end of the cantilever box. A bottom support box is arranged at the bottom of the cantilever box, and support wheels are arranged at the bottom of the bottom support box. The support wheels are in contact with the top surface of the steel guardrail. A ladder is arranged on one side of the base away from the cantilever box.

[0005] Preferably, the base includes a concrete moving seat at the bottom and an installation column vertically fixed on the concrete moving seat. Rollers are arranged at the bottom of the concrete moving seat, and the rollers are adapted to the channel steel rails on the bridge. A flange plate is arranged at the bottom of the installation column.

[0006] Preferably, the areas of the connection ends of the cantilever box and the bottom support box with the base are both larger than the areas of the connection ends with the movable platform. The top of the cantilever box is provided with an inclined surface, and the bottom of the bottom support box is provided with an inclined surface.

[0007] Preferably, the movable platform includes a support seat, a side rod vertically fixed on one side of the support seat, and a pull rod obliquely arranged and connected between the support seat and the side rod. A protective ring is arranged on the side rod, and the protective rings are arranged at equal intervals along the axial direction of the side rod. The protective rings are located directly above the support seat.

[0008] Preferably, a safety protection net is hung on the surface of the movable platform.

[0009] Preferably, guardrails are provided on both sides of the top of the base and the cantilever box.

[0010] The utility model provides a movable hanging operation platform for welding steel box girder bridge guardrails. By arranging a base that moves along the bridge, a cantilever box is arranged on one side of the base. The movable platform is supported by the cantilever box, and auxiliary support is provided by support wheels to ensure the stability of the movable platform. Moreover, in the form of rigid connection, by pushing the base to move, the movable platform can be driven to move, improving the construction efficiency and the convenience and safety of construction site transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The following further describes the utility model in conjunction with the drawings and embodiments:

[0012] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0013] In the figure: 1, steel guardrail; 2, base; 3, channel steel slide rail; 4, cantilever box; 5, bottom support box; 6, connecting head; 7, movable platform; 8, support wheel; 9, side rod; 10, pull rod; 11, support seat; 12, ladder; 13, guardrail. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] As Figure 1 shown, the utility model provides a movable hanging operation platform for welding steel box girder bridge guardrails, including a base 2 slidably arranged on the bridge along the axial direction of the bridge, a cantilever box 4 horizontally fixed at the top end of the base 2, and a movable platform 7 vertically connected to the end of the cantilever box 4. A bottom support box 5 is arranged at the bottom of the cantilever box 4, and a support wheel 8 is arranged at the bottom of the bottom support box 5. The support wheel 8 is in contact with the top surface of the steel guardrail 1. A ladder 12 is arranged on one side of the base 2 away from the cantilever box 4.

[0015] A connecting plate is installed at the top of the side wall of the movable platform 7. Connecting heads 6 are connected to the ends of the cantilever box 4 and the bottom support box 5. The connecting heads 6 are connected to the connecting plate through flange structures and high-strength bolts at the edges. Construction workers move to the upper part of the base 2 through the ladder 12, then enter the movable platform 7 through the cantilever box 4, and finally enter the bottom of the movable platform 7 through the rods arranged at equal intervals in the vertical direction in the movable platform 7, so as to weld the outer gaps of the steel guardrail 1. When subsequent construction site transfer is needed, directly push the base 2 to move along the bridge, and the support wheel 8 rolls along the steel guardrail 1. There is a gap between the movable platform 7 and the outer side wall of the steel guardrail 1. Even if the moving direction of the base 2 has a certain deviation, the movable platform 7 will not collide with the steel guardrail 1. Two rollers are arranged at the bottom of the bottom support box 5. If both rollers move to the outside of the steel guardrail 1 due to the deviation of the base 2, the position of the base 2 needs to be calibrated.

[0016] As Figure 1As shown in the figure, to ensure the stability of the movement of the base 2 and prevent collisions between the moving platform 7 and the steel guardrail 1. The base 2 includes a concrete moving base at the bottom and a mounting column vertically fixed on the concrete moving base. Roller wheels are provided at the bottom of the concrete moving base, and the roller wheels are adapted to the channel steel slide rails 3 on the bridge. A flange plate is provided at the bottom of the mounting column. By providing a flange plate at the bottom of the mounting column and stably connecting the mounting column and the concrete moving base through high-strength bolts, it is ensured that the bottom of the base 2 has sufficient strength.

[0017] As Figure 1 shown in the figure. The areas of the connecting ends of the cantilever box 4 and the bottom support box 5 with the base 2 are both larger than the areas of the connecting ends with the moving platform 7. An inclined surface is provided at the top of the cantilever box 4, and an inclined surface is provided at the bottom of the bottom support box 5. By providing inclined surfaces at one ends of the cantilever box 4 and the bottom support box 5, not only can the connection area between the cantilever box 4, the bottom support box 5 and the base 2 be increased, but also the strength of the cantilever box 4 and the bottom support box 5 can be increased through the inclined surfaces, ensuring the stability of the moving platform 7.

[0018] As Figure 1 shown in the figure. The moving platform 7 includes a support seat 11, a side rod 9 vertically fixed on one side of the support seat 11, and a tension rod 10 inclined and connected between the support seat 11 and the side rod 9. A protective ring is provided on the side rod 9, and the protective rings are arranged at equal intervals along the axial direction of the side rod 9. The protective rings are located directly above the support seat 11. There are two side rods 9 on the fixed side of the moving platform 7. The side rods 9 are made of square steel. A connecting plate is installed between the two side rods 9 and connected to the connecting head 6 through the connecting plate. The protective ring is integrally arched and connected to the side rod 9. A round rod is installed on the other side of the moving platform 7, and the round rod is arranged parallel to the side rod 9 to ensure the stability of the protective ring. Construction workers stand on the support seat 11 for welding construction. The welding electrodes for welding construction are placed on the support seat 11, and the connection strength between the support seat 11 and the side rod 9 is ensured through the tension rod 10.

[0019] As a preferred embodiment of the present utility model. A safety protection net is hung on the surface of the moving platform 7. A safety protection net is arranged around the moving platform 7 to ensure the safety of the construction process.

[0020] As Figure 1 shown in the figure, to ensure that construction workers can safely enter the moving platform 7 through the ladder 12, the base 2 and the cantilever box 4. Guardrails 13 are provided on both sides of the tops of the base 2 and the cantilever box 4.

Claims

1. A movable hanging operation platform for welding steel box girder bridge guardrails, characterized in that: It includes a base (2) slidably arranged on the bridge along the axial direction of the bridge, a cantilever box (4) horizontally fixed at the top of the base (2), and a movable platform (7) vertically connected to the end of the cantilever box (4). A bottom support box (5) is arranged at the bottom of the cantilever box (4), and support wheels (8) are arranged at the bottom of the bottom support box (5). The support wheels (8) are in contact with the top surface of the steel guardrail (1). A ladder (12) is arranged on one side of the base (2) away from the cantilever box (4). The base (2) includes a concrete moving seat at the bottom and a mounting column vertically fixed on the concrete moving seat. Rollers are arranged at the bottom of the concrete moving seat, and the rollers are adapted to the channel steel slide rail (3) on the bridge. A flange is arranged at the bottom of the mounting column.

2. The movable hanging operation platform for welding of the steel box girder bridge guardrail according to claim 1, wherein: The areas of the connection ends of the cantilever box (4) and the bottom support box (5) with the base (2) are both larger than the areas of the connection ends with the movable platform (7). An inclined surface is arranged at the top of the cantilever box (4), and an inclined surface is arranged at the bottom of the bottom support box (5).

3. The movable hanging operation platform for welding the steel box girder bridge guardrail according to claim 1, wherein: The movable platform (7) includes a support seat (11), a side rod (9) vertically fixed on one side of the support seat (11), and a pull rod (10) inclined and connected between the support seat (11) and the side rod (9). A protective ring is arranged on the side rod (9), and the protective rings are arranged at equal intervals along the axial direction of the side rod (9). The protective rings are located directly above the support seat (11).

4. The movable hanging operation platform for welding the steel box girder bridge guardrail according to claim 3, wherein: A safety protection net is hung on the surface of the movable platform (7).

5. The movable hanging operation platform for welding the steel box girder bridge guardrail according to claim 1, characterized in that: Guardrails (13) are arranged on both sides of the top of the base (2) and the cantilever box (4).

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