WO2023226319A1

WO2023226319A1 - Protective device for high-altitude welding construction of large bridge high-strength steel box-shaped arch rib

Info

Publication number: WO2023226319A1
Application number: PCT/CN2022/131802
Authority: WO
Inventors: 杜飞; 王艳华; 刘海龙; 曹庆喜; 郑磊; 周科文; 牛凯; 王峻; 郭强; 胡娟; 陈天怡; 谢耿
Original assignee: 中国路桥工程有限责任公司; 南通振华重型装备制造有限公司
Priority date: 2022-05-23
Filing date: 2022-11-15
Publication date: 2023-11-30
Also published as: CN217810519U

Abstract

A protective device for high-altitude welding construction of a large bridge high-strength steel box-shaped arch rib, comprising: a supporting framework (1), which is integrally configured in an arch structure, and a top end of which is provided with a slope structure (11); a protective railing (2), which is arranged at the top end of the supporting framework (1) and is arranged around the top end of the supporting framework (1); a ladder (3), which is fixedly arranged at one end of the supporting framework (1) and is vertically arranged; and a coating structure (4), which coats the supporting framework (1), wherein a joint between two box-shaped arch ribs is positioned in an opening of the arch structure, and the coating structure (4) shields the device from wind and rain. The box-shaped arch ribs pass through the arch structure, the joint between the two box-shaped arch ribs is positioned in the opening of the arch structure, and a welding area is positioned inside the protective device, so that wind and rain can be prevented, the environmental temperature and humidity of a soldering area can be effectively controlled, powerful conditions are provided for high-strength steel welding, the welding quality is guaranteed, and the construction efficiency is improved.

Description

A protective device for high-altitude welding construction of high-strength steel box-shaped arch ribs in large bridges

Technical field

The utility model relates to the technical field of manufacturing steel bridge box arch ribs, and in particular to a protective device for high-altitude welding construction of high-strength steel box arch ribs for large bridges.

Background technique

With the rapid development of transportation engineering at home and abroad, in order to reduce the weight of large bridges while ensuring the load-bearing capacity of large steel structure bridge arch ribs, more and more S690 grade high-strength alloy structural steel has begun to be used in steel structure bridges.

S690 grade high-strength steel has a greater tendency to be hardened, and cold cracks are prone to occur during welding. The welding quality is difficult to guarantee. It has high requirements on the welding process and welding environment, and is especially sensitive to rain and wind. Therefore, when using high-strength steel materials, The moisture-proof and thermal insulation measures taken when the box-shaped arch ribs are closed and welded at high altitude are very critical.

In view of the existence of the above problems, the designer based on his rich practical experience and professional knowledge in the engineering application of such products for many years, and combined with the application of academic theory, actively researched and innovated, in order to create a high-altitude welding of high-strength steel box-type arch ribs for large bridges. Construction protective devices make it more practical.

The information disclosed in this Background section is merely intended to enhance understanding of the general background of the present invention and should not be construed as an admission or in any way implied that the information constitutes prior art that is already known to those skilled in the art.

Utility model content

The utility model provides a protective device for high-altitude welding construction of high-strength steel box-shaped arch ribs of large bridges, thereby effectively solving the problems in the background technology.

In order to achieve the above purpose, the technical solution adopted by this utility model is: a protective device for high-altitude welding construction of high-strength steel box-type arch ribs of large bridges, including:

A support frame, the support frame is configured as an arch structure as a whole, and the top of the support frame is provided with a slope structure;

Protective railings, the protective railings are arranged on the top of the supporting frame and are arranged around the top of the supporting frame;

Ladder, the ladder is fixedly arranged on one end of the support frame, and the ladder is arranged vertically;

Covering structure, the covering structure covers the support frame, and the joints of the two box-shaped arch ribs are located in the opening of the arch structure. The covering structure blocks wind and rain.

Further, the support frame includes two bottom frames and a top frame. The top frame is provided at the top of the two bottom frames. An opening is provided between the two bottom frames. The two bottom frames and the top frame constitute The arch structure.

Further, the two bottom frames respectively include:

A plurality of support poles, a plurality of the support poles are arranged vertically, and the top ends are fixedly connected to the top frame;

A number of supporting cross bars are arranged horizontally, and both ends are fixedly connected to the two supporting vertical bars respectively.

Furthermore, the bottom frame further includes a plurality of first diagonal struts, which are arranged at an angle. Both ends of the first diagonal struts are respectively fixedly connected to two supporting vertical poles to support them.

Further, a second diagonal strut is provided between the two bottom frames. The second diagonal strut is arranged at an angle and is located at the top of the opening of the arch structure. The second diagonal strut is opposite to the arch structure. Support the opening.

Furthermore, the heights of both ends of the opening of the arch structure are different.

Further, the top frame includes a plurality of transverse square tubes and a longitudinal square tube, and the plurality of transverse square tubes and longitudinal square tubes are perpendicular to each other to form a rectangular frame, and the top frame is arranged at an angle.

Further, several lifting rings are fixedly provided on the top frame.

Further, the protective railing includes a bottom plate and a plurality of rods. The bottom plate is fixedly connected to the top frame. The plurality of rods constitute a frame structure for protection. The protective railing is provided with a passage at the ladder.

Further, the ladder includes a straight ladder and a cage. The straight ladder is arranged vertically. The straight ladder is provided with a connecting piece at one end close to the supporting frame. The connecting piece is fixedly connected to the supporting frame. The cage is arranged at one end of the straight ladder away from the support frame to protect personnel.

The beneficial effects of the utility model are: the utility model is provided with a supporting frame, a protective railing, a ladder and a covering structure. The supporting frame is set as an arch structure as a whole, and the covering structure covers the outside of the supporting frame. During welding, the The protective device is placed on the box-shaped arch ribs. The box-shaped arch ribs pass through the arch structure. The joint between the two box-shaped arch ribs is located in the opening of the arch structure. The welding area is located inside the protective device, which can prevent wind and rain. Effectively control the ambient temperature and humidity in the welding area, provide strong conditions for high-strength steel welding, ensure welding quality, and improve construction efficiency.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description These are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a side view of the utility model;

Figure 2 is a front view of the utility model;

Figure 3 is a top view of the utility model;

Figure 4 is a front view of the supporting frame;

Figure 5 is a top view of the supporting frame;

Figure 6 is a cross-sectional view of A-A in Figure 5;

Figure 7 is a side view of the supporting frame;

Figure 8 is a schematic structural diagram of the protective railing;

Figure 9 is a schematic structural diagram of the protective railing at the ladder;

Figure 10 is a side view of the ladder.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all implementations. example.

In the description of the present invention, it should be noted that the terms “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer”, etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations of the invention.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, or it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

As shown in Figures 1 to 10: a protective device for high-altitude welding construction of high-strength steel box arch ribs for large bridges, including:

Support frame 1, the support frame 1 is configured as an arch structure as a whole, and the top of the support frame 1 is provided with a slope structure 11;

Protective railing 2, the protective railing 2 is arranged on the top of the supporting frame 1, and is arranged around the top of the supporting frame 1;

The ladder 3 is fixedly installed on one end of the support frame 1, and the ladder 3 is installed vertically;

The cladding structure 4 covers the support frame 1. The joints of the two box-shaped arch ribs are located in the opening of the arch structure. The cladding structure 4 shields the wind and rain. The cladding structure 4 can be set as Color steel tiles.

By arranging the support frame 1, protective railing 2, ladder 3 and cladding structure 4, the support frame 1 is set as an arch structure as a whole, and the cladding structure 4 covers the outside of the support frame 1. During welding, the protective device is placed on On the box-shaped arch ribs, the box-shaped arch ribs pass through the arch structure. The joint between the two box-shaped arch ribs is located in the opening of the arch structure. The welding area is located inside the protective device, which can achieve wind and rain protection and effectively control the welding. The regional ambient temperature and humidity provide strong conditions for high-strength steel welding, ensure welding quality, and improve construction efficiency.

The top of the support frame 1 is provided with a slope-shaped structure 11, which can effectively allow rainwater to slide down and prevent it from accumulating on the top of the protective device.

In this embodiment, the support frame 1 includes two bottom frames 12 and a top frame 13. The top frame 13 is provided at the top of the two bottom frames 12. An opening is provided between the two bottom frames 12. The two bottom frames 12 and the top frame 13 form an arch. structure.

By arranging two bottom frames 12 and a top frame 13, the two bottom frames 12 and the top frame 13 form an arch structure, so that the box-shaped arch ribs pass between the arch structures. Since the supporting frame 1 is provided with a cladding structure 4, it is effective Provide protection from wind and rain.

As a preferred embodiment of the above, the two bottom frames 12 respectively include:

Several support poles 121 are arranged vertically, and the top ends are fixedly connected to the top frame 13;

A plurality of supporting cross bars 122 are arranged horizontally, and both ends are fixedly connected to the two supporting vertical bars 121 respectively.

Among them, the bottom frame 12 also includes a plurality of first diagonal struts 123. The plurality of first diagonal struts 123 are arranged at an angle. Both ends of the first diagonal struts 123 are respectively fixedly connected to the two support poles 121 to support them.

In order to ensure the support effect of the bottom frame 12, a number of support vertical bars 121, support cross bars 122 and first diagonal braces 123 are provided to ensure the structural strength of the bottom frame 12, to resist wind and rain, and not to cause deformation.

Since there is an opening between the two bottom frames 12, if the opening is connected only through the top frame 13, the structural strength will be low, so a second diagonal brace 14 is provided between the two bottom frames 12. The second diagonal brace 14 Arranged at an angle and located at the top of the opening of the arch structure, the second diagonal brace 14 supports the opening of the arch structure to ensure the structural strength of the support frame 1 .

Among them, since the top of the protective device needs to be set as a slope structure 11 to facilitate rainwater sliding down, the heights at both ends of the opening of the arch structure are set differently.

In this embodiment, the top frame 13 includes a plurality of transverse square tubes 131 and a longitudinal square tube 132. The plurality of transverse square tubes 131 and longitudinal square tubes 132 are perpendicular to each other to form a rectangular frame, and the top frame 13 is arranged at an angle.

Among them, a number of lifting rings 133 are fixedly provided on the top frame 13 . By arranging several lifting rings 133, it is convenient to hoist the protective device, thereby transporting the protective device to the welding place and protecting the welding place.

As a preferred embodiment of the above, the protective railing 2 includes a bottom plate 21 and a plurality of rods 22. The bottom plate 21 is fixedly connected to the top frame 13. The plurality of rods 22 constitute a frame structure for protection. The protective railing 2 is provided with a passage 23 at the ladder 3.

Since the staff needs to go from the ladder 3 to the top of the protective device, a passage 23 is provided on the protective railing 2 to facilitate the entry of personnel.

As a preferred embodiment of the above embodiment, the ladder 3 includes a straight ladder 31 and a cage 32. The straight ladder 31 is installed vertically. The straight ladder 31 is provided with a connecting piece 311 at one end close to the supporting frame 1. The connecting piece 311 is fixedly connected to the supporting frame 1. , the cage 32 is arranged at one end of the straight ladder 31 away from the support frame 1 to protect personnel.

The ladder 3 is provided with a straight ladder 31 and a cage 32. The straight ladder 31 is provided with a connecting piece 311 at one end of the straight ladder 31 close to the supporting frame 1. The connecting piece 311 is fixedly connected to the supporting frame 1. The cage 32 is arranged on the straight ladder. 31 is away from the end of the support frame 1. When the personnel are on the ladder 3, the cage 32 protects the workers and protects the safety of the workers.

Those skilled in the industry should understand that the present utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model can be There will also be various changes and improvements in the new model, and these changes and improvements all fall within the scope of the claimed utility model. The protection scope of the present utility model is defined by the appended claims and their equivalents.

Claims

A protective device for high-altitude welding construction of high-strength steel box arch ribs for large bridges, which is characterized by including:

A support frame, the support frame is configured as an arch structure as a whole, and the top of the support frame is provided with a slope structure;

Protective railings, the protective railings are arranged on the top of the supporting frame and are arranged around the top of the supporting frame;

A ladder, the ladder is fixedly arranged on one end of the support frame, and the ladder is arranged vertically;

Covering structure, the covering structure covers the support frame, and the joints of the two box-shaped arch ribs are located in the opening of the arch structure. The covering structure blocks wind and rain.
The protective device for high-altitude welding construction of high-strength steel box-type arch ribs of large bridges according to claim 1, characterized in that the support frame includes two bottom frames and a top frame, and the top frame is arranged at the top of the two bottom frames. , an opening is provided between the two bottom frames, and the two bottom frames and the top frame constitute the arch structure.
The protective device for high-altitude welding construction of high-strength steel box arch ribs for large bridges according to claim 2, characterized in that the two bottom frames respectively include:

A plurality of support poles, a plurality of the support poles are arranged vertically, and the top ends are fixedly connected to the top frame;

A number of supporting cross bars are arranged horizontally, and both ends are fixedly connected to the two supporting vertical bars respectively.
The protection device for high-altitude welding construction of high-strength steel box-type arch ribs of large bridges according to claim 3, characterized in that the bottom frame further includes a plurality of first diagonal braces, and a plurality of the first diagonal braces are arranged at an angle, The two ends of the first diagonal support rod are respectively fixedly connected to the two supporting vertical rods to support them.
The protective device for high-altitude welding construction of high-strength steel box-shaped arch ribs of large bridges according to claim 3, characterized in that a second diagonal brace is provided between the two bottom frames, and the second diagonal brace is arranged at an angle , and is located at the top of the opening of the arch structure, and the second diagonal brace supports the opening of the arch structure.
The protective device for high-altitude welding construction of high-strength steel box-type arch ribs of large bridges according to claim 5, characterized in that the heights of the two ends of the arch structure opening are different.
The protective device for high-altitude welding construction of high-strength steel box-type arch ribs of large bridges according to claim 1, characterized in that the top frame includes a plurality of transverse square tubes and a plurality of longitudinal square tubes, and a plurality of the transverse square tubes and longitudinal square tubes A rectangular frame is formed perpendicularly to each other, and the top frame is arranged at an angle.
The protective device for high-altitude welding construction of high-strength steel box-shaped arch ribs of large bridges according to claim 7, characterized in that a number of lifting rings are fixedly provided on the top frame.
The protective device for high-altitude welding construction of high-strength steel box-shaped arch ribs of large bridges according to claim 1, characterized in that the protective railings include a bottom plate and a plurality of rods, the bottom plate is fixedly connected to the top frame, and a plurality of rods constitute The frame structure provides protection, and the protective railing is provided with a passage at the ladder.
The protective device for high-altitude welding construction of high-strength steel box-type arch ribs of large bridges according to claim 1, characterized in that the ladder includes a straight ladder and a cage, the straight ladder is arranged vertically, and the straight ladder is located close to One end of the supporting frame is provided with a connecting piece, and the connecting piece is fixedly connected to the supporting frame. The cage is arranged on an end of the straight ladder away from the supporting frame to protect personnel.