Movable welding platform for lower part of steel structure bridge

Abstract

The invention belongs to the technical field of steel structure engineering welding, and particularly relates to a steel structure bridge lower portion movable welding platform which comprises a walking platform arranged above a bridge, the walking platform is movably arranged in the length direction of the bridge, and the two ends of the walking platform extend out of the two sides of the bridge; the two connecting mechanisms are arranged on the two sides of the bridge correspondingly, the connecting mechanisms are vertically arranged, and the two connecting mechanisms are fixedly connected with the two ends of the walking platform correspondingly; and the two welding tables are both arranged below the bridge and located on the two sides of the bridge correspondingly, the two welding tables are both horizontally arranged, and the sides, away from each other, of the two welding tables are fixedly connected with the bottom end of the connecting mechanism correspondingly. According to the movable welding platform, when a bottom welding seam of a bridge is welded, a support does not need to be erected at the bottom of the bridge, the problems that obstacles exist below the bridge and the support is inconvenient to erect are solved, meanwhile, the walking platform can move in the length direction of the bridge, and the movable welding platform is more convenient to use.

Description

Technical Field

[0001] The invention belongs to the technical field of steel structure engineering welding, and in particular relates to a movable welding platform for the lower part of a steel structure bridge. Background Art

[0002] A steel structure bridge refers to a bridge whose main load-bearing structure is made of steel. Steel structure bridges are gradually being recognized by people for their advantages such as low cost, good structural performance, fast construction speed, and good texture and strength.

[0003] Due to the limitations of the external dimensions, transportation and other conditions of steel structure bridges, the welding of steel structure bridges cannot be completed entirely in the factory. Some welds must be welded on site, especially the welds on the lower part of the structure after the steel structure bridge is erected.

[0004] After the steel structure bridge is erected, there are often obstacles such as rivers below, which makes it difficult to set up supports during welding. For this reason, a mobile welding platform for the lower part of the steel structure bridge is provided. Summary of the invention

[0005] The purpose of the present invention is to provide a movable welding platform for the lower part of a steel structure bridge to solve the above-mentioned problems.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The mobile welding platform for the lower part of the steel structure bridge includes:

[0008] A walking platform is arranged above the bridge, the walking platform is arranged to move along the length direction of the bridge, and two ends of the walking platform extend out of two sides of the bridge;

[0009] Two connecting mechanisms are respectively arranged on both sides of the bridge, the connecting mechanisms are arranged vertically, and the two connecting mechanisms are respectively fixedly connected to the two ends of the walking platform;

[0010] Two welding platforms are both arranged below the bridge and are respectively located on both sides of the bridge. The two welding platforms are both arranged horizontally, and the sides of the two welding platforms that are away from each other are respectively fixedly connected to the bottom end of the connecting mechanism.

[0011] In the mobile welding platform for the lower part of a steel structure bridge of the present invention, the walking platform comprises:

[0012] A plurality of first cross bars are arranged in sequence along the length direction of the bridge at intervals, the first cross bars are perpendicular to the length direction of the bridge, and two ends of the first cross bars extend out of two sides of the bridge;

[0013] A plurality of first longitudinal rods are arranged in sequence at intervals along the width direction of the bridge, the first longitudinal rods are perpendicular to the width direction of the bridge, and the plurality of first longitudinal rods are fixedly connected to the plurality of first cross rods.

[0014] In the movable welding platform for the lower part of a steel structure bridge of the present invention, the connecting mechanism comprises:

[0015] A plurality of second vertical poles, all arranged vertically, wherein the second vertical poles are fixedly connected to one end of the first cross bar extending out of the bridge;

[0016] A plurality of second cross bars are arranged horizontally, and the plurality of second cross bars are arranged at equal intervals from top to bottom. The second cross bars are fixedly connected between two adjacent second vertical bars located on the same side of the bridge.

[0017] In the movable welding platform for the lower part of a steel structure bridge of the present invention, the welding platform comprises:

[0018] A plurality of third longitudinal rods are sequentially arranged at intervals along the length direction of the bridge;

[0019] Two third cross bars are respectively fixed to two ends of the plurality of third longitudinal bars, and one of the third cross bars is fixed to the bottom ends of the plurality of second vertical bars;

[0020] A plate net is fixedly connected between the top ends of the plurality of third longitudinal rods;

[0021] The plate is fixedly connected between the bottom ends of the plurality of third longitudinal rods.

[0022] In the movable welding platform for the lower part of a steel structure bridge of the present invention, the top end of the second vertical pole is higher than the first horizontal pole, the top end of the second vertical pole is fixedly connected to a diagonal brace, and the other end of the diagonal brace is fixedly connected to the first horizontal pole.

[0023] In the movable welding platform for the lower part of a steel structure bridge of the present invention, a stiffening plate is provided at the connection between the second vertical pole and the first horizontal pole, the stiffening plate is located below the first horizontal pole, and the stiffening plate is fixedly connected to the second vertical pole and the first horizontal pole.

[0024] In the mobile welding platform for the lower part of a steel structure bridge of the present invention, a plurality of columns are fixedly connected below the first cross bar, the plurality of columns are distributed in an array, the columns are vertically arranged, the columns are arranged at the connection between the first cross bar and the first longitudinal bar, and rollers are fixedly installed at the bottom ends of the columns, and the rollers are rollingly connected to the bridge.

[0025] In the lower movable welding platform of the steel structure bridge of the present invention, a diagonal tie rod is arranged between the third longitudinal rod and the second vertical rod, one end of the diagonal tie rod is fixedly connected to an end of the third longitudinal rod away from the second vertical rod, and the other end of the diagonal tie rod is fixedly connected to the second vertical rod, two reinforcing rods are fixedly connected to the diagonal tie rod, and the diagonal tie rod is fixedly connected to the third longitudinal rod.

[0026] Compared with the prior art, the present invention has the following advantages and technical effects:

[0027] In the present invention, the walking platform is arranged above the bridge, and connecting mechanisms are fixedly connected on opposite sides of the walking platform. The welding platform is fixedly connected to the bottom end of the connecting mechanism, and the welding platform is arranged below the bridge. With such an arrangement, when welding the bottom weld of the bridge, there is no need to set up a bracket at the bottom of the bridge, thereby avoiding the problem of obstacles under the bridge and inconvenience in setting up a bracket. At the same time, the walking platform can move along the length direction of the bridge, making the mobile welding platform of the present invention more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0029] Figure 1 It is a schematic diagram of the use state of the present invention;

[0030] Figure 2 It is a front view of the present invention;

[0031] Figure 3 A top view of the present invention;

[0032] Figure 4 It is a front view of the connecting mechanism in the present invention;

[0033] Figure 5 It is a front view of the welding platform in the present invention;

[0034] Among them, 1. walking platform; 2. connecting mechanism; 3. welding table; 4. column; 5. roller; 6. diagonal brace; 7. stiffening plate; 8. bridge; 101. first cross bar; 102. first longitudinal bar; 201. second vertical bar; 202. second cross bar; 301. third cross bar; 302. third longitudinal bar. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Reference Figures 1 to 5 The present invention discloses a movable welding platform for the lower part of a steel structure bridge, comprising:

[0038] A walking platform 1 is arranged above the bridge 8, and the walking platform 1 is arranged to move along the length direction of the bridge 8, and both ends of the walking platform 1 extend out of both sides of the bridge 8;

[0039] Two connecting mechanisms 2 are respectively arranged on both sides of the bridge 8, the connecting mechanisms 2 are arranged vertically, and the two connecting mechanisms 2 are respectively fixedly connected to the two ends of the walking platform 1;

[0040] The two welding platforms 3 are both arranged below the bridge 8 and are respectively located on both sides of the bridge 8 . The two welding platforms 3 are both arranged horizontally, and the sides of the two welding platforms 3 that are away from each other are respectively fixedly connected to the bottom end of the connecting mechanism 2 .

[0041] In a feasible solution, the walking platform 1 includes:

[0042] A plurality of first crossbars 101 are arranged in sequence along the length direction of the bridge 8 at intervals, the first crossbars 101 are perpendicular to the length direction of the bridge 8, and both ends of the first crossbars 101 extend out of both sides of the bridge 8;

[0043] The plurality of first longitudinal rods 102 are arranged in sequence at intervals along the width direction of the bridge 8 . The first longitudinal rods 102 are perpendicular to the width direction of the bridge 8 . The plurality of first longitudinal rods 102 are fixedly connected to the plurality of first transverse rods 101 .

[0044] The first horizontal bar 101 and the first vertical bar 102 are arranged perpendicularly.

[0045] In a feasible solution, the connecting mechanism 2 includes:

[0046] A plurality of second vertical poles 201 are arranged vertically, and the second vertical poles 201 are fixedly connected to one end of the first cross bar 101 extending out of the bridge 8;

[0047] The plurality of second cross bars 202 are all arranged horizontally, and the plurality of second cross bars 202 are arranged at equal intervals from top to bottom. The second cross bars 202 are fixedly connected between two adjacent second vertical poles 201 located on the same side of the bridge 8 .

[0048] In a feasible solution, the welding station 3 comprises:

[0049] A plurality of third longitudinal rods 302 are sequentially arranged at intervals along the length direction of the bridge 8;

[0050] Two third cross bars 301 are respectively fixedly connected to two ends of the plurality of third longitudinal bars 302, wherein one of the third cross bars 301 is fixedly connected to the bottom ends of the plurality of second vertical bars 201;

[0051] A plate net is fixed between the top ends of the plurality of third longitudinal rods 302;

[0052] The arrangement of the plate mesh can effectively support the movement of workers on the welding table 3;

[0053] The plate is fixed between the bottom ends of the plurality of third longitudinal rods 302 .

[0054] The panels are set up to prevent falling objects from high altitudes.

[0055] The material of the expanded metal and the plate parts is steel.

[0056] In a feasible solution, the top end of the second vertical pole 201 is higher than the first cross bar 101 , the top end of the second vertical pole 201 is fixedly connected to a diagonal brace 6 , and the other end of the diagonal brace 6 is fixedly connected to the first cross bar 101 .

[0057] The provision of the diagonal brace 6 can effectively strengthen the connection strength between the second vertical rod 201 and the first horizontal rod 101 .

[0058] In a feasible solution, a stiffening plate 7 is provided at the connection between the second vertical pole 201 and the first cross bar 101 . The stiffening plate 7 is located below the first cross bar 101 . The stiffening plate 7 is fixedly connected to the second vertical pole 201 and the first cross bar 101 .

[0059] The structural strength of the connection between the second vertical rod 201 and the first horizontal rod 101 is strengthened by the stiffening plate 7 .

[0060] In a feasible solution, a plurality of columns 4 are fixedly connected below the first cross bar 101. The plurality of columns 4 are distributed in an array. The columns 4 are vertically arranged. The columns 4 are arranged at the connection between the first cross bar 101 and the first longitudinal bar 102. A roller 5 is fixedly installed at the bottom end of the column 4, and the roller 5 is rollingly connected to the bridge 8.

[0061] This arrangement facilitates the movement of the walking platform 1 on the bridge 8. At the same time, the bearing point of the walking platform 1 is located at the connection between the first crossbar 101 and the first longitudinal bar 102, so as to avoid damage caused by a single force on the first crossbar 101 or the first longitudinal bar 102.

[0062] In a feasible solution, a diagonal brace is provided between the third longitudinal rod 302 and the second vertical rod 201, one end of the diagonal brace is fixedly connected to one end of the third longitudinal rod 302 away from the second vertical rod 201, and the other end of the diagonal brace is fixedly connected to the second vertical rod 201, two reinforcing rods are fixedly connected to the diagonal brace, and the diagonal brace is fixedly connected to the third longitudinal rod 302.

[0063] By providing the diagonal rods and the reinforcing rods, the connection strength between the third longitudinal rod 302 and the second vertical rod 201 is strengthened, and the structural strength of the welding platform 3 is also strengthened.

[0064] One specific example:

[0065] The first crossbar 101, the first longitudinal bar 102, the second vertical bar 201, and the diagonal brace 6 are all made of Φ200*6 steel pipes, the second crossbar 202, the third crossbar 301, and the third longitudinal bar 302 are all made of I16 I-beams, and the stiffening plate 7 is made of 200*200*10 steel plates;

[0066] The first cross bar 101 and the first longitudinal bar 102 are arranged vertically and crosswise and welded together, a column 4 is welded between the bottom ends of the connection between the first cross bar 101 and the first longitudinal bar 102, and a roller 5 is installed under the column 4. There are four columns 4, and the four columns 4 are arranged in an array, and the walking platform 1 is completed;

[0067] Arrange multiple second vertical poles 201 in sequence at intervals, and arrange multiple second cross bars 202 at equal intervals from top to bottom between two adjacent second vertical poles 201. Both ends of the second cross bars 202 are fixedly connected to the second vertical poles 201. The connection mechanism 2 is prefabricated.

[0068] Arrange multiple third longitudinal rods 302 in sequence at intervals, respectively weld the two ends of the third longitudinal rods 302 to the two third transverse rods 301 to prefabricate the welding platform 3, and then weld the welding platform 3 to the connecting mechanism 2;

[0069] First, the traveling platform 1 is hoisted above the bridge 8 by a crane to temporarily fix the traveling platform 1, and then the connecting mechanism 2 is welded on both sides of the traveling platform 1 to complete the installation of the mobile welding platform.

[0070] In the present invention, the joints of the various components are connected by fillet welds, and the weld feet of the fillet welds are 6-8 mm.

[0071] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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 should not be understood as a limitation on the present invention.

[0072] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. The mobile welding platform for the lower part of steel structure bridge is characterized by: include: A walking platform (1) is arranged above the bridge (8), the walking platform (1) is arranged to move along the length direction of the bridge (8), and two ends of the walking platform (1) extend out of two sides of the bridge (8); Two connecting mechanisms (2) are respectively arranged on both sides of the bridge (8), the connecting mechanisms (2) are arranged vertically, and the two connecting mechanisms (2) are respectively fixedly connected to the two ends of the walking platform (1); The two welding platforms (3) are both arranged below the bridge (8) and are respectively located on both sides of the bridge (8); the two welding platforms (3) are both arranged horizontally; and the sides of the two welding platforms (3) that are away from each other are respectively fixedly connected to the bottom end of the connecting mechanism (2).

2. The movable welding platform for the lower part of a steel structure bridge according to claim 1 is characterized in that: The walking platform (1) comprises: A plurality of first cross bars (101) are arranged in sequence along the length direction of the bridge (8) at intervals, the first cross bars (101) are perpendicular to the length direction of the bridge (8), and two ends of the first cross bars (101) extend out of two sides of the bridge (8); A plurality of first longitudinal rods (102) are arranged in sequence at intervals along the width direction of the bridge (8); the first longitudinal rods (102) are perpendicular to the width direction of the bridge (8); and the plurality of first longitudinal rods (102) and the plurality of first transverse rods (101) are fixedly connected.

3. The movable welding platform for the lower part of a steel structure bridge according to claim 2 is characterized in that: The connecting mechanism (2) comprises: A plurality of second vertical poles (201), all arranged vertically, wherein the second vertical poles (201) are fixedly connected to one end of the first cross bar (101) extending out of the bridge (8); A plurality of second cross bars (202) are all arranged horizontally, and the plurality of second cross bars (202) are arranged at equal intervals from top to bottom. The second cross bars (202) are fixedly connected between two adjacent second vertical bars (201) located on the same side of the bridge (8).

4. The movable welding platform for the lower part of a steel structure bridge according to claim 3 is characterized in that: The welding station (3) comprises: A plurality of third longitudinal rods (302) are sequentially arranged at intervals along the length direction of the bridge (8); Two third cross bars (301) are respectively fixedly connected to the two ends of the plurality of third longitudinal bars (302), wherein one of the third cross bars (301) is fixedly connected to the bottom ends of the plurality of second vertical bars (201); A plate net fixedly connected between the top ends of the plurality of third longitudinal rods (302); The plate is fixedly connected between the bottom ends of the plurality of third longitudinal rods (302).

5. The movable welding platform for the lower part of a steel structure bridge according to claim 3 is characterized in that: The top end of the second vertical rod (201) is higher than the first cross rod (101), the top end of the second vertical rod (201) is fixedly connected to a diagonal brace (6), and the other end of the diagonal brace (6) is fixedly connected to the first cross rod (101).

6. The movable welding platform for the lower part of a steel structure bridge according to claim 3 is characterized in that: A stiffening plate (7) is provided at the connection between the second vertical pole (201) and the first cross bar (101); the stiffening plate (7) is located below the first cross bar (101); and the stiffening plate (7) is fixedly connected to the second vertical pole (201) and the first cross bar (101).

7. The movable welding platform for the lower part of a steel structure bridge according to claim 2 is characterized in that: A plurality of columns (4) are fixedly connected below the first cross bar (101), the plurality of columns (4) are distributed in an array, the columns (4) are vertically arranged, the columns (4) are arranged at the connection between the first cross bar (101) and the first longitudinal bar (102), and a roller (5) is fixedly installed at the bottom end of the column (4), and the roller (5) is rollingly connected to the bridge (8).

8. The movable welding platform for the lower part of a steel structure bridge according to claim 4 is characterized in that: A diagonal brace is provided between the third longitudinal rod (302) and the second vertical rod (201); one end of the diagonal brace is fixedly connected to an end of the third longitudinal rod (302) away from the second vertical rod (201); the other end of the diagonal brace is fixedly connected to the second vertical rod (201); two reinforcing rods are fixedly connected to the diagonal brace; and the diagonal brace is fixedly connected to the third longitudinal rod (302).

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