Safety hanging basket for high-altitude construction of steel arch rib sections

Abstract

The utility model relates to a safety hanging basket for high-altitude construction of steel arch rib sections. The safety hanging basket is composed of a hanging mechanism, welding equipment and a limiting device. The suspension mechanism is of a door-frame-shaped structure, the upper end and the two sides of a door frame are each of a frame structure, the welding equipment is located in an upper end frame of the suspension mechanism, and the limiting device is installed on the inner side of the suspension mechanism and makes contact with an arch rib section and is welded to a top plate and a web of the arch rib section in multiple directions. The device has the advantages that firstly, the device is stable in structure, complete in system, capable of supporting in multiple directions and multiple points, larger in bearing load, free of additional balance weight, safe and reliable in use process and higher in safety coefficient; the two sides of the chord member can be constructed at the same time, welding equipment of different types can be carried according to the welding technology, the construction coverage range is wide, and the working efficiency is greatly improved; and thirdly, the universality and the applicability are high, and various construction operation requirements of welding, flaw detection, coating, inspection and the like can be met.

Description

Technical Field

[0001] The utility model relates to a safety hanging basket for high-altitude construction of steel arch rib segments, belonging to the field of manufacturing bridge site construction devices for steel bridges. Background Art

[0002] In the process of connecting the bridge positions of steel structure bridges, especially for steel arch rib bridge structures, it is difficult to set up a fixed construction operation platform due to the lack of temporary brackets in the arch rib segments, and the construction area is generally in a suspended state. The staff needs to reach the side of the arch rib and complete welding, flaw detection, painting, inspection and other tasks. The operation is very difficult, and there are great safety hazards in the construction process. In the past construction, simple hanging baskets were made based on nodes and fixed on one side of the arch rib. The working range covered by the simple hanging basket is limited, and welding equipment cannot be carried; the simple hanging basket can only be hung on one side of the arch rib segment, and a temporary connection is set on the arch rib segment. It lacks integrity and rigidity, and is prone to large shaking during construction, which poses a great safety risk; in addition, the hanging basket needs to be frequently adjusted to the other side during construction, and welding equipment, materials, etc. also need to be rearranged with the help of large lifting equipment, which takes up effective working time and affects work efficiency. Summary of the invention

[0003] Design purpose: To avoid the shortcomings of the background technology, a steel arch rib segment high-altitude construction safety hanging basket is designed. The hanging basket is safe and stable, simple in structure, easy to use, covers a wide working range, can carry welding equipment, and flexibly adjust the welding position.

[0004] Design scheme: In order to achieve the above design objectives. In terms of structural design, the utility model combines the structural characteristics of the steel arch rib to design a construction hanging basket that can be hung on the top of the arch rib segment and can simultaneously perform high-altitude operations on both sides. It is mainly composed of three parts: a hanging mechanism, a welding device, and a limit device. Figure 1 As shown. A ladder is installed inside the suspension mechanism to provide an operating platform for construction workers. The platform material is a non-slip patterned steel plate. The suspension device is covered with thin iron sheets for sealing. The structural dimensions are designed according to the dimensions of the steel arch rib segment components and construction requirements. The welding equipment is divided into two parts, consisting of an electric welder and auxiliary materials. The whole is placed in the top area of the suspension mechanism, and the two are temporarily fixed to prevent tipping. The limit device is composed of steel sections, connecting plates, and connecting angle steels. The whole is detachable. The steel sections are connected to the connecting plates and connecting angle steels by bolts, and the connecting plates are connected to the suspension mechanism by bolts. When the limit device is in use, the positioning angle steels on both sides of the steel sections are welded to the arch rib segments to ensure the overall stability of the hanging basket.

[0005] Principle: Combining the structural characteristics of the steel arch rib segments, a suspension mechanism, a welding equipment column, and a limiting device are designed and manufactured. First, the interface positions of each arch rib segment are positioned, the required welding equipment is installed in the suspension device, and then the suspension mechanism and the limiting device are installed in sequence. After being installed in place, they are welded and connected to the arch rib segment. The difference between the present utility model and the conventional simple hanging basket lies in that the "straddle type" idea is adopted in this device. The U-shaped suspension device straddles above the arch rib segment, and then a stable structure is formed through the limiting device, which is equivalent to mounting a construction bin that can weld both sides simultaneously for the arch rib segment. And according to the construction needs, different types of welding equipment can be carried in the suspension mechanism to meet the welding requirements of different arch rib segment interfaces.

[0006] Technical solution: A safety hanging basket for high-altitude construction of steel arch rib segments is composed of a suspension mechanism 1, welding equipment, and a limiting device; the suspension mechanism has a door frame-shaped structure, the upper end and both sides of the door frame are frame structures, the welding equipment is located inside the upper frame of the suspension mechanism, and the limiting device is installed on the inner side of the suspension mechanism in contact with the arch rib segment, and the limiting device is welded to the top plate and web of the arch rib segment in multiple directions.

[0007] Compared with the background technology, the present utility model has the following advantages. First, the structure of this device is stable, the system is complete, with multi-directional and multi-point support, and the load-bearing capacity is greater. There is no need to increase the counterweight, and the use process is safe and reliable with a higher safety factor. Second, this device can construct both sides of the chord simultaneously, and different types of welding equipment can be carried according to the welding process, with a wide construction coverage range, greatly improving the work efficiency. Third, the structure of this device is simple, with strong versatility and applicability. While saving the steel consumption, it can meet the needs of various construction operations such as welding, flaw detection, painting, and inspection. The size of the suspension mechanism and the layout of the limiting points can be designed according to the structural characteristics of different steel truss girders and construction needs, with flexible and variable forms. Brief Description of the Drawings

[0008] Figure 1 It is a schematic diagram of a safety hanging basket for high-altitude construction of steel arch rib segments.

[0009] Figure 2 It is a schematic diagram of the limiting device. Detailed Description of the Preferred Embodiment

[0010] Embodiment 1: Refer to Figure 1 and 2A safety hanging basket for high-altitude construction of steel arch rib segments, which is composed of a suspension mechanism 1, a welding device 2, and a limiting device 3; the suspension mechanism 1 has a door frame-shaped structure, and the upper end and both sides of the door frame are frame structures. The welding device 2 is located inside the upper frame of the suspension mechanism 1. The limiting device 3 is installed on the inner side of the suspension mechanism 1 in contact with the arch rib segment, and the limiting device 3 is welded to the top plate and web of the arch rib 4 segment in multiple directions. The periphery of the suspension mechanism 1 is covered with fireproof cloth and dense mesh, and the bottom is closed with diamond plate. The limiting device 3 is composed of an I-beam 31, a connecting plate 33, and a connecting angle steel 32; one end of the I-beam 31 is connected to the connecting plate 33, and the connecting angle steel 32 is located on the supporting vertical plate of the I-beam. A ladder is provided inside the suspension mechanism 1.

[0011] To ensure the implementation effect of this utility model, taking the use during the installation of the arch rib segment of a steel arch rib bridge as an example for illustration:

[0012] Step 1: Define the structural characteristics of the arch rib, determine the dimensions of the suspension mechanism. The dimensions (length, width, and height) of the suspension mechanism and the size of the inner reserved frame need to meet the construction requirements. The section steel dimensions of the limiting device should be determined according to the width and height of the arch rib segment at the limiting points. The number of limiting devices is not less than 8 (4 on the top surface of the arch rib and 4 on the side), and they are symmetrically arranged.

[0013] Step 2: The welding of the frame of the suspension mechanism should be firm, and the overall structure should have a certain rigidity. At the same time, the overall quality should be reasonably controlled. According to the weights of the suspension mechanism and the welding device, other loads during the installation process, and the number of suspension points under the most unfavorable conditions, select the steel plate material and thickness of the suspension ear of the suspension mechanism, and at the same time determine the size of the suspension ear.

[0014] Step 3: After each part is manufactured, carry out on-site installation. Before installation, assemble the limiting device on the suspension mechanism. During installation, with the aid of lifting equipment, lift the suspension mechanism to the position of the arch rib interface, adjust the attitude; weld the welds at the contact parts between the top of the arch rib segment and the upper angle steel of the limiting device, and then weld the welds at the contact parts between the two sides of the arch rib segment and the limiting device; lift the welding device to the corresponding position of the suspension mechanism and take good fixing measures.

[0015] It should be understood that: Although the above embodiments have made relatively detailed written descriptions of the design concept of this utility model, these written descriptions are only simple written descriptions of the design concept of this utility model, rather than limitations on the design concept of this utility model. Any combination, addition, or modification that does not exceed the design concept of this utility model falls within the protection scope of this utility model.

Claims

1. A safety hanging basket for the high-altitude construction of steel arch rib segments, which is composed of a suspension mechanism (1), a welding device (2), and a limiting device (3); the characteristics are as follows: The suspension mechanism (1) has a door frame-shaped structure. The upper end and both sides of the door frame are of frame structure. The welding equipment (2) is located inside the upper frame of the suspension mechanism (1). The limiting device (3) is installed on the inner side of the suspension mechanism (1) in contact with the arch rib segment, and the limiting device (3) is welded to the top plate and web of the arch rib (4) segment in multiple directions.

2. The safety hanging basket for high-altitude construction of steel arch rib segments according to claim 1, characterized in that: The periphery of the suspension mechanism (1) is covered with fireproof cloth and safety net, and the bottom is closed with diamond plate.

3. The safety hanging basket for high-altitude construction of steel arch rib segments according to claim 1, characterized in that: The limiting device (3) consists of an I-beam (31), a connecting plate (33), and a connecting angle steel (32); one end of the I-beam (31) is connected to the connecting plate (33), and the connecting angle steel (32) is located on the supporting vertical plate of the I-beam.

4. The safety hanging basket for high-altitude construction of steel arch rib segments according to claim 1, characterized in that: A ladder is provided inside the suspension mechanism (1).

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