Movable external welding platform for mounting furnace shell of hot-blast stove

Abstract

The movable external welding platform comprises a hanging scaffold, the hanging scaffold is of an annular structure, the hanging scaffold is arranged on the outer side of the hot blast stove shell, and the hot blast stove shell is connected with the hanging scaffold through a plurality of pulling plates. Compared with the prior art, the movable external welding platform has the beneficial effects that the movable external welding platform for installing the hot-blast stove shell and the hot-blast stove shell physical hanging scaffold are connected through a plurality of pulling plates, a traditional tripod welding platform mode is replaced, and the flexibility and maneuverability are high; and the furnace shells of the hot blast stoves of various models can be adjusted according to actual conditions and can be repeatedly used. Assembly time is short, transportation is convenient, and transportation space is not occupied. The structure is reasonable, the stress performance is good, the strength of steel can be fully utilized, the bearing capacity is high, and economy and applicability are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of hot blast furnace installation, in particular to a movable external welding platform for installing a hot blast furnace shell. Background Art

[0002] With the rapid development of my country's economy, blast furnace ironmaking technology has advanced very quickly, and the hot blast furnace that provides heat source has developed towards large-scale, diversified and efficient directions. During the installation of the hot blast furnace shell, it is usually constructed layer by layer, that is, after the first layer is constructed, the second layer is constructed on the basis of the first layer. Due to the increase in the number of layers, a corresponding construction platform must be built at this time to provide an operating platform for equipment and construction personnel.

[0003] Conventional construction platforms include full-height scaffolding platforms and chain-type platforms. Full-height scaffolding platforms are built layer by layer from bottom to top. This method requires a lot of materials, is costly, and takes a long time to complete, which affects the construction progress. Chain-type platforms are in high-altitude operation during installation and removal, which poses certain safety issues.

[0004] Patent CN201610629U discloses a hot blast stove construction platform, including a platform and a plate hinge. The platform is mounted on the hot blast stove shell through the plate hinge, and a tension member is connected between the platform and the hot blast stove shell. It is necessary to respectively set lifting ears for the plate hinge and the tension member on the hot blast stove shell to fix and lift the construction platform, which is inconvenient for construction. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a movable external welding platform for installing the hot blast furnace shell, which is easy to install, saves labor and time, is reusable, has a reasonable structure, good force performance, can fully utilize the strength of steel, has high bearing capacity, and is economical and applicable.

[0006] To achieve this technical purpose, the present invention adopts the following scheme: A movable external welding platform for installing a hot blast furnace shell comprises a hanging plate which is an annular structure and is arranged on the outside of the hot blast furnace shell. The invention is characterized in that the hot blast furnace shell and the hanging plate are connected by a plurality of pull plates.

[0007] Compared with the prior art, the present invention has the following beneficial effects: The present invention installs a movable external welding platform for the hot blast furnace shell. The hot blast furnace shell is connected to the hanging plate through multiple pull plates, replacing the traditional tripod welding platform mode, and has high flexibility and mobility. The hot blast furnace shells of various models can be adjusted according to actual conditions and can be reused. The assembly time is fast, and the transportation is convenient without occupying the transportation space. The present invention has a reasonable structure, good force performance, can fully utilize the strength of steel, has high bearing capacity, and is economical and applicable.

[0008] Furthermore, at least eight pull plates are provided and are evenly distributed along the circumferential direction of the hot blast furnace shell. With the provision of multiple pull plates, the hot blast furnace shell and the hanging plate are connected and fixed at multiple points, and the force distribution is even, which can ensure the stability of the hanging plate during the construction process and further ensure the construction safety.

[0009] Furthermore, a plurality of first lifting ears are arranged on the outer wall of the hot blast furnace shell, and second lifting ears are arranged at corresponding positions of the hanging plate, and the first lifting ears and the second lifting ears are connected by a pull plate.

[0010] Furthermore, the first lifting lug is hinged to the pull plate, which may be bolted, connected by a clamp ring, or connected by a U-shaped clamp. During the construction process, after the hot blast furnace shell is installed, the first lifting lug and the pull plate are easy to disassemble and can be quickly installed with the next shell.

[0011] Furthermore, the hanging plate includes a main structure arranged in a radial manner, a support is arranged between two adjacent main structures, and a support plate is laid on the main structure and the support. The main structure is arranged reasonably, the overall structure of the hanging plate has good force resistance, high bearing capacity, and is economical and applicable. The support plate can be fixedly connected to the main structure or detachably connected. The support plate can be a steel plate or a waste formwork for construction, and the specific material is not limited.

[0012] Furthermore, a guardrail is arranged on the outside of the hanging platform, which can prevent construction workers from slipping and improve safety.

[0013] Furthermore, a safety net is provided on the guardrail, which can further ensure construction safety and prevent construction tools, materials, etc. from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A top view of a welding platform according to an embodiment of the present invention; Figure 2 for Figure 1 AA view; The markings in the figure are: 1. hot air furnace shell; 2. lifting plate; 3. first lifting eye; 4. second lifting eye; 5. pull plate; 6. main structure; 7. support; 8. support plate; 9. guardrail. DETAILED DESCRIPTION

[0015] In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail through the following specific implementation methods, but the present invention is not limited thereto.

[0016] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" or "laid on" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0017] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, 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 application.

[0018] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0019] See also Figure 1 and Figure 2 The present invention provides a technical solution: a movable external welding platform for installing a hot blast furnace shell, comprising a hanging plate 2, the hanging plate 2 is a ring structure, the hanging plate 2 is arranged on the outside of the hot blast furnace shell 1, and the hanging plate 2 is connected to the hot blast furnace shell 1 through a pull plate 5.

[0020] Furthermore, a plurality of first lifting ears 3 are arranged on the outer wall of the hot blast stove shell 1, a second lifting ear 4 is arranged at a corresponding position of the hanging plate 2, and a pull plate 5 is arranged between the first lifting ear 3 and the second lifting ear 4. The first lifting ear 3 is hinged to the pull plate 5.

[0021] In some embodiments, the first lifting ear 3 and the pull plate 5 can be connected by bolts, by clamps, or by other means such as U-shaped clamps.

[0022] The construction method of the present invention is: firstly, a first belt of hot blast furnace shell is placed on an assembly platform, and installed according to the construction requirements; when the first belt of hot blast furnace shell is installed in place, a first lifting ear 3 is welded on the outer wall of the shell of the second belt of the hot blast furnace shell, and a lifting device is used to lift the lifting plate 2 and lift it to the indicated position, and a clamping ring is used to connect the first lifting ear 3 with the pull plate 5 to complete the fixation of the lifting plate 2 and the hot blast furnace shell 1, and a welding operation is performed; after completion, the clamping ring between the first lifting ear 3 and the pull plate 5 is removed, the lifting plate 2 is lifted to the position of the next belt shell, and the first lifting ear 3 is connected with the pull plate 5 by the clamping ring, and the construction is continued until the installation of the hot blast furnace is completed.

[0023] Preferably, the lifting of the lifting plate 2 adopts a six-point lifting method, and the lifting wire rope is connected to the second lifting lug 4 during lifting.

[0024] Furthermore, the hanging plate 2 includes a main structure 6 that is radially distributed, a support 7 is provided between two adjacent main structures 6, and a support plate 8 is laid on the upper part of the main structure 6 and the support 7. The number of main structures 6 is more than eight, which ensures the stability of the hanging plate 2 structure, and the arrangement is reasonable. The overall structure of the hanging plate 2 has good stress resistance, high bearing capacity, and is economical and applicable. The support plate 8 can be fixedly connected to the main structure 6 or detachably connected. The support plate 8 can be a steel plate or a waste formwork for construction, and the specific material is not limited.

[0025] In the embodiment of the present invention, the support plate 8 is a steel plate, which is connected and fixed to the main structure 6 and the support 7 by welding.

[0026] In some embodiments, 24 main structures 6 are provided, and the main structures 6 adopt L160*10 angle steel. A support 7 is provided between two adjacent main structures 6, and the support 7 is a channel steel. A support plate 8 is laid on the upper part of the main structure 6, and the specification of the support plate 8 is a 3mm thick steel plate. The width of the hanging plate 2 is 900~1000mm.

[0027] In some embodiments, a guardrail 9 is provided on the outside of the hanging plate 2. The provision of the guardrail 9 can prevent construction workers from slipping and improve safety.

[0028] In some embodiments, a safety net is also provided on the guardrail 9. The provision of the safety net can further ensure construction safety and also prevent construction tools, materials, etc. from falling.

[0029] The movable external welding platform for installing the hot blast furnace shell provided by the present invention has a hot blast furnace shell 1 and a hanging plate 2 connected by a plurality of pull plates 5, which replaces the traditional tripod welding platform mode and has high flexibility and mobility; the hot blast furnace shells of various models can be adjusted according to actual conditions and can be reused. The assembly time is fast, and the transportation is convenient without occupying the transportation space. The present invention has a reasonable structure, good force performance, can make full use of the strength of steel, has a high bearing capacity, and is economical and applicable.

[0030] Finally, it should be noted that the above are only preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and variations fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.

Claims

1. A movable external welding platform for installing a hot blast furnace shell, comprising a hanging plate (2), the hanging plate (2) being an annular structure, the hanging plate (2) being arranged on the outside of the hot blast furnace shell (1), characterized in that: The hot air furnace shell (1) and the hanging plate (2) are connected via a plurality of pull plates (5).

2. The movable external welding platform for installing the shell of a hot blast furnace according to claim 1, characterized in that: At least eight pull plates (5) are provided and are evenly distributed along the circumferential direction of the hot blast furnace shell (1).

3. The movable external welding platform for installing the shell of a hot blast furnace according to claim 1, characterized in that: A plurality of first lifting ears (3) are arranged on the outer wall of the hot blast furnace shell (1), and a second lifting ear (4) is arranged at a corresponding position of the lifting plate (2), and the first lifting ear (3) and the second lifting ear (4) are connected via a pull plate (5).

4. The movable external welding platform for installing the shell of a hot blast furnace according to claim 3, characterized in that: The first lifting eye (3) is hinged to the pull plate (5).

5. The movable external welding platform for installing the shell of a hot blast furnace according to claim 1, characterized in that: The hanging plate (2) comprises main structures (6) arranged in a radial manner, supports (7) are arranged between two adjacent main structures (6), and support plates (8) are laid on the upper parts of the main structures (6) and the supports (7).

6. The movable external welding platform for installing the shell of a hot blast furnace according to claim 1, characterized in that: A guardrail (9) is arranged on the outer side of the hanging plate (2).

7. The movable external welding platform for installing the shell of a hot blast furnace according to claim 6, characterized in that: A safety net is provided on the guardrail (9).

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