Steel column welding heat preservation device in ultralow-temperature environment

Abstract

The utility model relates to the technical field of steel structure welding, in particular to a steel column welding heat preservation device in an ultralow-temperature environment, which comprises a box body consisting of a bottom plate, two transverse side plates, two longitudinal side plates and a top plate, the bottom plate is horizontally arranged at the upper end of a steel column body in a sleeving manner, and the plate surfaces of the two transverse side plates are opposite and are arranged at intervals; the transverse side plates are arranged on the upper plate surface of the bottom plate, the two longitudinal side plates are opposite in plate surface and arranged at intervals, the longitudinal side plates are arranged on the upper plate surface of the bottom plate, the two transverse side plates and the two longitudinal side plates are arranged in a square cylinder shape, and the top plate is arranged on the sides, away from the bottom plate, of the transverse side plates and the longitudinal side plates. And the lower plate face of the top plate is fixedly connected with the side walls of the transverse side plates and the longitudinal side plates, the top plate and the bottom plate are each provided with a reserved hole allowing the steel column to penetrate, and the effect of stably welding the steel column at the low temperature with high strength is achieved.

Description

Technical Field

[0001] This application relates to the field of steel structure welding technology, and in particular to a heat preservation device for welding steel columns in an ultra-low temperature environment. Background Technology

[0002] Currently, steel structure welding is a very important connection technology in modern construction engineering. It is widely used in many fields such as buildings, bridges, ships, offshore platforms, and pressure vessels. It is flexible in design, easy to operate, and suitable for different construction environments and conditions. Its application range is extremely wide, and it is one of the preferred methods for connecting metal components. As building height continues to increase, the requirements for welding technology and processes are also becoming higher and higher.

[0003] The existing technologies used for welding steel columns in high-rise buildings mainly include: automated and semi-automated welding technologies, primarily submerged arc welding and gas shielded welding; on-site high-altitude welding technologies, mainly performed by welding technicians; and all-position welding technologies, which use welding robots. The ambient temperature in most projects is suitable, and no additional protective measures are required for on-site welding operations.

[0004] The existing technical solutions mentioned above have the following drawbacks: When carrying out winter construction in high-latitude regions, the weld joints are affected by temperature and wind. If windproof and heat-insulating measures are not taken, the steel components will be preheated and then cooled too quickly after welding, which will easily cause cold cracks and surface defects at the weld joints, making it difficult to guarantee the welding quality of the steel structure. Utility Model Content

[0005] This application provides a thermal insulation device for welding steel columns in an ultra-low temperature environment, which enables high-strength and stable welding of steel columns at low temperatures.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] A steel column welding insulation device for ultra-low temperature environments includes a box body composed of a base plate, two transverse side plates, two longitudinal side plates, and a top plate. The base plate is horizontal and fitted onto the upper end of the steel column body. The two transverse side plates are arranged with their surfaces facing each other and spaced apart, and are placed on the upper surface of the base plate. The two longitudinal side plates are arranged with their surfaces facing each other and spaced apart, and are placed on the upper surface of the base plate. The two transverse side plates and the two longitudinal side plates are arranged in a square tube shape. The top plate is located on the side of the transverse side plates and longitudinal side plates away from the base plate. The lower surface of the top plate is fixedly connected to the side walls of the transverse side plates and longitudinal side plates. Both the top plate and the base plate have reserved holes for the steel column to pass through.

[0008] By adopting the above technical solution, a box-like structure composed of a base plate, transverse side plates, longitudinal side plates, and a top plate can be used to weld steel columns at low temperatures with high strength and stability. The base plate is horizontal and fitted onto the upper end of the steel column body. The transverse and longitudinal side plates are arranged in a square tube shape. The top plate is located on the side of the transverse and longitudinal side plates away from the base plate and is fixed to the side wall. Both the top and bottom plates have reserved holes for the steel column to pass through. The base plate, transverse side plates, longitudinal side plates, and top plate form a closed space that surrounds the area of ​​the steel column body to be welded, reducing the impact of the external ultra-low temperature environment and wind on the welding area. This provides a relatively stable and temperature-suitable environment for steel column welding. At the same time, the connection of each component forms a stable support structure, ensuring that the insulation device can weld the steel column with high strength and stability in ultra-low temperature environments.

[0009] Optionally, four crossbars are fixed to the lower surface of the base plate. The four crossbars are spaced apart from each other and are respectively set at the four edges of the lower surface of the base plate. The sidewalls of the crossbars are fixed to the lower surface of the base plate, and the sidewalls of the crossbars away from the base plate are connected to the sidewalls of the steel column body through inclined support rods.

[0010] By adopting the above technical solution, and by setting up crossbars and inclined support bars, a stable support connection can be formed between the bottom of the insulation device and the steel column body. The weight of the base plate and the box body is evenly transferred to the steel column body through the crossbars and inclined support bars, which enhances the stability of the connection between the insulation device and the steel column body. At the same time, the inclination angle of the support bars provides lateral and longitudinal support for the box body, improves the overall structural strength of the insulation device, and facilitates the welding of steel columns by workers inside the insulation device.

[0011] Optionally, the supporting diagonal rod is a round rod, and a connecting plate is provided on the end face of the supporting diagonal rod. A connecting seat is provided on the side wall of the steel column body and the side wall of the crossbar. The connecting seat is composed of two oppositely arranged strip plates. The connecting plate can be inserted into the connecting seat. The connecting plate and the connecting seat are connected by a fixing column, and the fixing column passes through the connecting seat and the connecting plate.

[0012] By adopting the above technical solution, and by setting up connecting plates, connecting seats, and fixed columns, a stable and detachable connection can be formed between the supporting diagonal rod and the steel column body and crossbar. The connecting plate is inserted into the connecting seat and connected by the fixed column. This structural design not only facilitates installation and disassembly, but also ensures that the supporting diagonal rod will not shift or loosen when under stress, thereby enhancing the stability and reliability of the overall structure of the insulation device. At the same time, it is convenient to quickly assemble or disassemble the insulation device according to actual construction needs.

[0013] Optionally, multiple mutually perpendicular reinforcing bars are provided between the crossbars, and the reinforcing bars connect the four crossbars.

[0014] By adopting the above technical solution, and by setting multiple mutually perpendicular reinforcing bars between the crossbars, the four crossbars can be connected into a stable grid-like mounting frame, which enhances the overall rigidity and deformation resistance of the bottom plate support structure, so that the bottom plate remains horizontal and stable when bearing the weight of the box and external loads, thereby improving the strength and reliability of the bottom support structure of the insulation device.

[0015] Optionally, each of the four crossbars has a vertical column at its adjacent end. The bottom plate and top plate have notches at their corners that are adapted to the columns. The lower ends of the two adjacent side walls of the columns are fixed to the adjacent end faces of the two crossbars respectively. The side walls of the columns and crossbars are provided with mounting grooves. The transverse side plates and longitudinal side plates are adapted to the mounting grooves and are inserted into the mounting grooves.

[0016] By adopting the above technical solution, and by setting vertical columns and mounting slots on the columns, stable support and accurate installation positions can be provided for the horizontal and vertical side panels. The lower end of the column is fixed to the crossbar to form the supporting frame of the box. The horizontal and vertical side panels are quickly positioned and installed by inserting them into the mounting slots. At the same time, the notch design ensures that the column fits tightly with the bottom plate and top plate, forming a stable square cylindrical frame structure, providing vertical support and lateral stiffness for the box.

[0017] Optionally, a lifting ring is provided on the upper end face of the column.

[0018] By adopting the above technical solution and setting lifting rings on the upper end of the column, it is possible to connect with external lifting equipment using the lifting rings, which facilitates the overall hoisting and position adjustment of the insulation device by construction personnel. Especially in high-altitude working environments, it improves the convenience and safety of the installation and disassembly of the insulation device and reduces the difficulty of manual operation.

[0019] Optionally, the transverse side panel has an observation window that connects the two sides of the transverse side panel.

[0020] By adopting the above technical solution and setting up observation windows on the transverse side panels, workers can directly observe the real-time status of the steel column welding area through the observation windows without opening the side panels, which facilitates monitoring the welding progress and quality.

[0021] Optionally, a heater is provided on the upper part of the opposite side surface of the longitudinal side plate.

[0022] By adopting the above technical solution and setting up a heater, the internal space of the insulation device can be heated directly to compensate for the heat loss in the ultra-low temperature environment, so that the welding area is maintained within a temperature range suitable for steel column welding, avoiding defects caused by excessively rapid cooling of the weld due to excessively low temperature, and providing stable temperature conditions for steel column welding.

[0023] Optionally, the top plate has an inlet and outlet, which are spaced apart from the reserved holes, and the inlet and outlet connect the two surfaces of the top plate.

[0024] By adopting the above technical solution and setting up entrances and exits, access channels can be provided for workers and welding equipment, making it convenient for construction personnel to carry tools into the box for operation.

[0025] In summary, this application has the following technical effects:

[0026] 1. By using a box-like structure consisting of a base plate, transverse side plates, longitudinal side plates, and a top plate, high-strength and stable welding of steel columns at low temperatures can be achieved. The base plate is horizontal and fitted onto the upper end of the steel column body. The transverse and longitudinal side plates are arranged in a square tube shape. The top plate is located on the side of the transverse and longitudinal side plates away from the base plate and is fixed to the side wall. Both the top and bottom plates have reserved holes for the steel column to pass through. The base plate, transverse side plates, longitudinal side plates, and top plate form a closed space that surrounds the area of ​​the steel column body to be welded, reducing the impact of the external ultra-low temperature environment and wind on the welding area. This provides a relatively stable and temperature-appropriate environment for steel column welding. At the same time, the connection of each component forms a stable support structure, ensuring that the insulation device can weld the steel column with high strength and stability in ultra-low temperature environments.

[0027] 2. By setting up horizontal bars and inclined support bars, a stable support connection can be formed between the bottom of the insulation device and the steel column body. The weight of the base plate and the box body is evenly transferred to the steel column body through the horizontal bars and inclined support bars, which enhances the stability of the connection between the insulation device and the steel column body. At the same time, the inclination angle of the inclined support bars provides lateral and longitudinal support for the box body, improves the overall structural strength of the insulation device, and facilitates the welding of steel columns by workers inside the insulation device.

[0028] 3. By setting up columns and mounting slots on the columns, stable support and accurate installation positions can be provided for the horizontal and vertical side panels. The lower end of the column is fixed to the crossbar to form the supporting frame of the box. The horizontal and vertical side panels are quickly positioned and installed by inserting them into the mounting slots. At the same time, the notch design ensures that the column fits tightly with the bottom plate and top plate, forming a stable square tube frame structure, providing vertical support and lateral stiffness for the box. Attached Figure Description

[0029] Figure 1 This is a structural diagram of the object of this application;

[0030] Figure 2 This is a structural drawing of the steel column body, supporting diagonal brace, mounting frame and column of this application;

[0031] Figure 3 This is a structural diagram of the internal structure of the insulation device in this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Steel column body; 2. Supporting diagonal brace; 21. Connecting seat; 22. Connecting plate; 23. Fixed column; 3. Mounting frame; 31. Horizontal bar; 32. Reinforcing bar; 4. Upright column; 41. Mounting groove; 42. Lifting ring; 5. Transverse side plate; 51. Observation window; 6. Longitudinal side plate; 61. Electrical wiring hole; 62. Heater; 7. Base plate; 8. Top plate; 81. Inlet / outlet; 82. Cover plate; 83. Reserved hole; 9. Ladder. Detailed Implementation

[0033] The present application will be further described in detail below with reference to the accompanying drawings.

[0034] This application discloses a thermal insulation device for welding steel columns in ultra-low temperature environments. The thermal insulation device is installed on the steel column body 1, which is vertically arranged. The thermal insulation device is located at the upper end of the steel column body 1. (Refer to...) Figure 1 and Figure 2 The insulation device includes a support diagonal rod 2 connected to the side wall of the steel column body 1. Two connecting seats 21 are provided at the upper end of each of the four side walls of the steel column body 1. Each connecting seat 21 is composed of two opposing strip plates. The length directions of the two strip plates are parallel to each other. The end face of the connecting seat 21 is fixed to the side wall of the steel column body 1. The two connecting seats 21 on the side wall of the steel column body 1 are spaced apart, and the connecting seats 21 on the four side walls are all on the same horizontal plane.

[0035] Combination Figure 1 and Figure 2 The supporting diagonal rod 2 is a round rod, and a connecting plate 22 is fixedly connected to its end face. The surface of the connecting plate 22 is perpendicular to the end face of the supporting diagonal rod 2. The connecting plate 22 can be inserted between the two strip plates of the connecting seat 21. The connecting plate 22 and the connecting seat 21 are connected by a fixing column 23. The fixing column 23 passes through the two strip plates of the connecting seat 21 and the connecting plate 22, and the axis of the fixing column 23 is perpendicular to the surface of the connecting plate 22. The lower end of the supporting diagonal rod 2 is connected to the connecting seat 21 on the side wall of the steel column body 1 through the connecting plate 22 and the fixing column 23. The upper end of the supporting diagonal rod 2 is away from the steel column body 1. The supporting diagonal rod 2 is inclined, and the horizontal plane where the upper end of the supporting diagonal rod 2 is located is lower than the horizontal plane where the upper end face of the steel column body 1 is located. The supporting rod can support the insulation device, evenly distribute the force, form a stable support for the insulation device, and improve the overall structural reliability.

[0036] Combination Figure 1 and Figure 2The upper end of the supporting diagonal rod 2 is connected to the mounting frame 3 via the connecting plate 22, the fixing column 23, and the connecting seat 21. The mounting frame 3 consists of a horizontal rod 31 and a reinforcing rod 32. There are four horizontal rods 31, all of which are horizontally arranged. The length direction of the four horizontal rods 31 is parallel to the four edges of the upper end face of the steel column body 1. The ends of the four horizontal rods 31 are spaced apart from each other, and the four horizontal rods 31 are distributed in a square shape. The height of the plane where the four horizontal rods 31 are located is lower than the height of the plane where the upper end face of the steel column body 1 is located. The lower side wall of the horizontal rod 31 is provided with a connecting seat 21. The upper end of the supporting diagonal rod 2 is connected to the connecting seat 21 on the lower side wall of the horizontal rod 31 via the connecting plate 22 and the fixing column 23. The length direction of the supporting diagonal rod 2 is always perpendicular to the length direction of the horizontal rod 31.

[0037] Combination Figure 1 and Figure 2 The four horizontal bars 31 are connected by multiple mutually perpendicular reinforcing bars 32, which are spaced apart from the steel column body 1. Vertical columns 4 are installed at the ends of the horizontal bars 31. Four columns 4 are installed, located at adjacent corners at the ends of the four horizontal bars 31. The lower ends of the adjacent side walls of the columns 4 are fixed to the adjacent end faces of the two horizontal bars 31, and the lower end face of the columns 4 is flush with the lower side wall of the horizontal bars 31.

[0038] Combination Figure 2 and Figure 3 The two side walls connecting the column 4 and the crossbar 31 are each provided with a strip-shaped mounting groove 41. The length direction of the mounting groove 41 is parallel to the length direction of the column 4. The mounting groove 41 and the crossbar 31 are spaced apart. A lifting ring 42 is provided on the upper end face of the column 4. The lifting ring 42 is a circular ring, which facilitates the movement of the insulation device. Horizontal side plates 5 and longitudinal side walls are provided between the columns 4. Both the horizontal side plates 5 and the longitudinal side walls are metal plates. Two horizontal side plates 5 are provided, with their opposite side walls inserted into the mounting groove 41. The two horizontal side plates 5 are positioned opposite each other, and their surfaces are parallel. Two longitudinal side plates 6 are provided, with their opposite side walls inserted into the mounting groove 41. The two longitudinal side plates 6 are positioned opposite each other, and their surfaces are parallel.

[0039] Combination Figure 1 and Figure 3 Each of the transverse side panels 5 has a strip-shaped observation window 51 on its surface. The observation window 51 is horizontal in its length direction and connects the two surfaces of the transverse side panel 5. The observation window 51 is filled with multi-layered glass or Low-E glass filled with inert gas, which has the functions of light transmission, heat insulation, and preventing rapid heat loss. A circular wire hole 61 is opened in the lower part of the longitudinal side panel 6 near one of the transverse side panels 5. The wire hole 61 connects the two surfaces of the longitudinal side panel 6.

[0040] Combination Figure 1 and Figure 3The mounting frame 3 has a base plate 7 on its upper surface. The base plate 7 is a square plate and its surface is fixed to the upper surface of the mounting frame 3. Square notches that fit the intersections of the base plate 7 and the side walls of the columns 4 are provided at the four corners of the base plate 7. The four side walls of the base plate 7 are flush with the opposite side walls of the columns 4. A square top plate 8 is also provided between the four columns 4. The surface of the top plate 8 is the same as the surface of the base plate 7. The surface of the top plate 8 can be fixed to the side walls of the transverse side plate 5 and the longitudinal side plate 6 opposite to the mounting frame 3. The surface of the top plate 8 is parallel to the surface of the base plate 7.

[0041] Combination Figure 1 and Figure 3 Both the top plate 8 and the bottom plate 7 have square pre-drilled holes 83 in the middle of their surfaces. These holes connect the two surfaces of the top plate 8 and the bottom plate 7 and are used to insert the two steel column bodies 1 to be welded. The bottom plate 7, two transverse side plates 5, two longitudinal side plates 6, and the top plate 8 form a box that encloses the area where the two steel column bodies 1 are to be welded, thereby ensuring that the welding temperature is suitable for steel column welding and guaranteeing the welding effect and strength of the steel column in a low-temperature environment.

[0042] Combination Figure 1 and Figure 3 An inlet / outlet 81 is provided near the edge of the transverse side plate 5 and the longitudinal side plate 6 of the top plate 8. The inlet / outlet 81 is strip-shaped and parallel to the surface of the transverse side plate 5 along its length. The inlet / outlet 81 is spaced apart from the reserved hole 83. A cover plate 82 is hinged to one end of the inlet / outlet 81 to close the inlet / outlet. A ladder 9 is provided at the corresponding position of the transverse side plate 5 near the inlet / outlet 81. The ladder 9 is fixed to the opposite surface of the transverse side plate 5, facilitating access for workers. A heater 62 is provided on the upper part of the opposite surface of the longitudinal side plate 6 to ensure that the temperature inside the insulation device is suitable for the welding work of the steel column.

[0043] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A thermal insulation device for welding steel columns in ultra-low temperature environments, wherein the thermal insulation device is installed on the steel column body (1), characterized in that: The box-shaped structure consists of a base plate (7), two transverse side plates (5), two longitudinal side plates (6), and a top plate (8). The base plate (7) is horizontal and fitted onto the upper end of the steel column body (1). The two transverse side plates (5) are arranged with their surfaces facing each other and spaced apart. The transverse side plates (5) are set on the upper surface of the base plate (7). The two longitudinal side plates (6) are arranged with their surfaces facing each other and spaced apart. The longitudinal side plates (6) are set on the upper surface of the base plate (7). The two transverse side plates (5) and the two longitudinal side plates (6) are arranged in a square tube shape. The top plate (8) is set on the side of the transverse side plates (5) and the longitudinal side plates (6) away from the base plate (7). The lower surface of the top plate (8) is fixed to the side walls of the transverse side plates (5) and the longitudinal side plates (6). Both the top plate (8) and the base plate (7) have reserved holes (83) for the steel column to pass through.

2. The device for welding and heat preservation of steel column in ultra-low temperature environment according to claim 1, characterized in that: Four horizontal bars (31) are fixedly connected to the lower surface of the base plate (7). The four horizontal bars (31) are spaced apart from each other and are respectively set at the four edges of the lower surface of the base plate (7). The side wall of the horizontal bar (31) is fixedly connected to the lower surface of the base plate (7). The side wall of the horizontal bar (31) away from the base plate (7) is connected to the side wall of the steel column body (1) through the inclined support bar (2).

3. The device according to claim 2, characterized in that: The supporting diagonal rod (2) is a round rod, and a connecting plate (22) is provided on the end face of the supporting diagonal rod (2). The side wall of the steel column body (1) and the side wall of the crossbar (31) are both provided with connecting seats (21). The connecting seat (21) is composed of two strip plates arranged opposite each other. The connecting plate (22) can be inserted into the connecting seat (21). The connecting plate (22) and the connecting seat (21) are connected by a fixing column (23). The fixing column (23) passes through the connecting seat (21) and the connecting plate (22).

4. The device for welding and heat preservation of steel column in ultra-low temperature environment according to claim 2, characterized in that: Multiple reinforcing bars (32) are arranged between the crossbars (31) and are perpendicular to each other. The reinforcing bars (32) connect the four crossbars (31).

5. The device for welding and heat preservation of steel column in ultra-low temperature environment according to claim 2, characterized in that: Vertical columns (4) are provided at the adjacent ends of the four crossbars (31). Notches adapted to the columns (4) are provided at the corners of the bottom plate (7) and the top plate (8). The lower ends of the adjacent side walls of the columns (4) are fixed to the adjacent end faces of the two crossbars (31). The side walls of the columns (4) and the crossbars (31) are provided with mounting grooves (41). The transverse side plates (5) and the longitudinal side plates (6) are adapted to the mounting grooves (41), and the transverse side plates (5) and the longitudinal side plates (6) are inserted into the mounting grooves (41).

6. The steel column welding insulation device under ultra-low temperature environment according to claim 5, characterized in that: A lifting ring (42) is provided on the upper end face of the column (4).

7. The device according to claim 1, characterized in that: The transverse side plate (5) has an observation window (51) on its surface, and the observation window (51) connects the two surfaces of the transverse side plate (5).

8. The device according to claim 1, characterized in that: A heater (62) is provided on the upper part of the opposite side plate (6).

9. The device according to claim 8, characterized in that: The top plate (8) has an inlet and outlet (81) on its surface. The inlet and outlet (81) are spaced apart from the reserved hole (83). The inlet and outlet (81) connect the two surfaces of the top plate (8).

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