Device for quickly splicing H-shaped steel column in air

Abstract

The utility model discloses an aerial quick splicing device for H-shaped steel columns. The aerial quick splicing device comprises an upper H-shaped steel column, a lower H-shaped steel column and a limiting device, the limiting device comprises a left clamping plate and a right clamping plate, the upper portions of the clamping plates are arc-shaped plates, the lower portions of the clamping plates are rectangular plates, the arc-shaped plates incline outwards, and the arc-shaped plates of the two clamping plates form an inverted splayed shape. The two rectangular plates are located on the two sides of a web of the lower H-shaped steel column correspondingly and connected with the web of the lower H-shaped steel column through bolts. The two arc-shaped plates are located on the two sides of a web of the upper H-shaped steel column respectively. According to the utility model, the splicing efficiency can be improved; the upper H-shaped steel column and the lower H-shaped steel column are in accurate butt joint through the clamping plates, an operator completes welding of the flange plates on the two sides of the steel column firstly, the clamping plates are taken off after welding is completed, and then web welding is conducted, and due to the fact that the flange plates are fixed and welded through the clamping plates, the operator does not need to worry about dislocation caused by shaking of the steel column and unbalance of the gravity center of the operator. A relatively safe working environment is provided for operators, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel structure installation, and particularly relates to a device for quickly splicing H-shaped steel columns in the air. Background Art

[0002] Among the key components of a coal mine conveying system, the coal conveying trestle and the buffer bin are important parts of the conveying system in the coal mine field. The buffer bin generally has a silo height of more than 50 meters and is an important hub for coal mine transfer. With the transformation and upgrading of the coal mine transportation line, in order to ensure that coal can be smoothly transported from the coal bunker to the buffer bin for transfer, the height of the transportation section of the coal conveying trestle must also be correspondingly increased to a level matching the buffer bin. This adjustment has led to the need to build an overhead section of the coal conveying trestle line to meet the high-altitude transportation requirements of coal mine production. Since the service life of the coal conveying trestle is relatively limited, usually after 15 to 20 years, the coal conveying trestle needs to be demolished and rebuilt according to the coal mine mining line. For this reason, the overhead section of the coal conveying trestle support generally adopts a steel structure support, and a fully enclosed modular trestle is installed on the support. This design is not only structurally stable but also convenient for construction, effectively improving the construction efficiency. In this context, during the construction process of the coal mine transportation transformation project, a large number of steel structure assembly, hoisting, and installation processes are involved. The traditional steel structure installation method is to splice the steel components on the ground and then use a crane to hoist the steel components to the installation position for installation. For such projects, the steel support has a large height and weight, and it cannot be hoisted and installed in place at one time after being assembled on the ground. Therefore, there is a situation of splicing in the air. Especially in the high-altitude splicing operation environment, the steel column needs to be kept vertical, and the upper steel column needs to be accurately placed on the surface of the lower steel column. During this process, the installation personnel need to correct the upper steel column for a long time to ensure that its verticality is accurately aligned with that of the lower steel column. Due to the large self-weight of the steel column and the influence of environmental factors, the positioning process is more difficult, and there are greater safety hazards. Moreover, during subsequent welding, due to the influence of environmental factors, the steel column is prone to displacement, making it difficult to effectively ensure the verticality of the steel column. If the above problems occur, tools such as jacks and chain hoists need to be used for correction. This method not only increases the workload of the staff but also prolongs the use time of the crane and reduces the construction efficiency. Therefore, a construction device that can accurately and quickly install steel columns in the air is needed to improve the installation efficiency, reduce the high-altitude installation operation time of workers, and thus achieve the purpose of saving costs and reducing safety hazards. Content of the Utility Model

[0003] In order to solve the above problems in the prior art, that is, to solve the problems of difficult splicing and inaccurate docking of steel columns in the prior art, the utility model provides a device for quickly splicing H-shaped steel columns in the air.

[0004] To achieve the above object, the technical solution adopted by the present utility model is a rapid splicing device for H-shaped steel columns in the air, including an upper H-shaped steel column, a lower H-shaped steel column and a limiting device; the limiting device includes two left and right clamping plates, the upper part of the clamping plate is an arc-shaped plate, and the lower part is a rectangular plate. The arc-shaped plate is inclined outward, and the arc-shaped plates of the two clamping plates form an inverted "V" shape; the two rectangular plates are respectively located on both sides of the web of the lower H-shaped steel column and are connected to the web of the lower H-shaped steel column by bolts; the two arc-shaped plates are respectively located on both sides of the web of the upper H-shaped steel column.

[0005] Preferably, the included angle between the arc-shaped plate and the rectangular plate is 15-30°.

[0006] Preferably, bolt holes are provided on both the lower H-shaped steel column and the rectangular plate, and the positions of the bolt holes correspond accurately.

[0007] Preferably, the width of the clamping plate is 10 mm less than the width of the webs of the upper H-shaped steel column and the lower H-shaped steel column.

[0008] Preferably, the number of bolt holes on the lower H-shaped steel column and the rectangular plate is four, and they are distributed in a rectangle.

[0009] Preferably, the clamping plate is made of Q345B steel with a thickness of 13 mm.

[0010] Preferably, the bolts are hexagonal high-strength bolts.

[0011] Preferably, the four supporting hexagonal high-strength bolts can smoothly pass through the bolt holes of the lower H-shaped steel column and the rectangular plate to fix the rectangular plate on the lower H-shaped steel column. When the clamping plate is fixed, it is necessary to ensure that the vertical direction of the rectangular plate is parallel to the vertical direction of the lower H-shaped steel column.

[0012] The beneficial effects produced by the present utility model are as follows: The clamping plate is connected to the H-shaped steel column as a whole through bolt hole positioning, which can ensure the accurate docking of the upper and lower H-shaped steel columns through the clamping plate; by designing the upper part of the clamping plate into an arc to form a smooth surface that is smaller at the top and larger at the bottom, it is convenient for docking when the upper and lower H-shaped steel columns are docked, and the docking accuracy is achieved through the smooth surface, which can greatly improve the splicing efficiency; through the clamping plate, the upper and lower H-shaped steel columns are accurately docked. The operator first completes the welding of the flange plates on both sides of the steel column. After the welding is completed, the clamping plate is removed and then the web is welded. Because the flange plates are fixed by the clamping plate, there is no need to worry about the steel column shaking and causing misalignment and the operator's center of gravity imbalance, providing a relatively safe working environment for the operator and reducing potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions described in the present utility model, the following will briefly introduce the drawings required in the implementation examples. By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes and advantages of the present application will become more obvious.

[0014] Figure 1 is the front elevation schematic diagram of the present utility model;

[0015] Figure 2 is the side elevation schematic diagram of the present utility model. Specific embodiments

[0016] Embodiment 1

[0017] As Figure 1-2 shown, a device for quickly splicing H-shaped steel columns in the air includes an upper H-shaped steel column 101, a lower H-shaped steel column 102, and a limiting device; the limiting device includes two left and right clamping plates (left clamping plate 202, right clamping plate 201), the upper part of the clamping plate is an arc-shaped plate, and the lower part is a rectangular plate. The arc-shaped plate is inclined outward, and the arc-shaped plates of the two clamping plates form an inverted "V" structure; the two rectangular plates are respectively located on both sides of the web of the lower H-shaped steel column and are connected to the web of the lower H-shaped steel column through bolts 301; the two arc-shaped plates are respectively located on both sides of the web of the upper H-shaped steel column.

[0018] The included angle between the arc-shaped plate and the rectangular plate is 15°. Bolt holes are opened on both the lower H-shaped steel column and the rectangular plate, and the positions of the bolt holes correspond accurately. The width of the clamping plate is 10 mm less than the widths of the webs of the upper H-shaped steel column and the lower H-shaped steel column (the upper H-shaped steel column and the lower H-shaped steel column have the same model). The number of bolt holes on the lower H-shaped steel column and the rectangular plate is four, and they are distributed in a rectangle.

[0019] During the construction process, workers splice the components of the upper H-shaped steel column 101 and the lower H-shaped steel column 102 on the ground, make clamping plates matching the H-shaped steel column and open 4 bolt holes on the clamping plates. Then, after measurement and positioning, bolt holes corresponding to the clamping plates are opened on the webs at the connection of the upper H-shaped steel column 101 and the lower H-shaped steel column 102. Use a hoisting device that meets the requirements to lift the lower H-shaped steel column 102, and after temporarily fixing it in the air through the limiting device, the hook cannot be completely released, and full-process monitoring and correction should be carried out in a timely manner. After the position is corrected correctly, first complete the welding of the flange plates on both sides of the steel column. After the welding of the flange plates on both sides is completed, remove the limiting device on the web of the steel column and then weld and fix the web of the steel column, and then the crane releases the hook.

[0020] So far, the technical solutions of the present utility model have been described in combination with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present utility model.

Claims

1. An aerial rapid splicing device for H-shaped steel columns, characterized in that: It includes an upper H-shaped steel column, a lower H-shaped steel column and a limiting device; the limiting device includes two left and right clamping plates. The upper part of the clamping plate is an arc-shaped plate, and the lower part is a rectangular plate. The arc-shaped plate is inclined outward, and the arc-shaped plates of the two clamping plates form an inverted "eight" shape; the two rectangular plates are respectively located on both sides of the web of the lower H-shaped steel column and are connected to the web of the lower H-shaped steel column by bolts; the two arc-shaped plates are respectively located on both sides of the web of the upper H-shaped steel column.

2. The device for rapid aerial splicing of H-shaped steel columns according to claim 1, wherein: The included angle between the arc-shaped plate and the rectangular plate is 15 - 30°.

3. The device for rapid aerial splicing of H-shaped steel columns according to claim 1, characterized in that: Both the lower H-shaped steel column and the rectangular plate are provided with bolt holes.

4. The air rapid splicing device for H-shaped steel columns according to claim 1, characterized in that: The width of the clamping plate is 10 mm less than the widths of the webs of the upper H-shaped steel column and the lower H-shaped steel column.

5. The device for rapid in-air splicing of H-shaped steel columns according to claim 1, characterized in that: The number of bolt holes on the lower H-shaped steel column and the rectangular plate is four, and they are distributed in a rectangular shape.

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