Hanging scaffold for replacing blast furnace shell

Abstract

The utility model relates to the field of blast furnace shell replacement, and discloses a hanging scaffold for blast furnace shell replacement. The annular beam is concentrically arranged on the outer side of the central cylinder; the multiple telescopic components extend outwards from the center cylinder in the multiple radial directions of the center cylinder and are connected with the annular beam, and each telescopic component can stretch out and draw back in the radial direction of the telescopic component; and each bed board is detachably laid between every two adjacent telescopic components. The internal component hoisting device can meet the hoisting requirements of internal components of furnace sections with different radial sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace shell replacement, in particular to a hanging plate for blast furnace shell replacement. Background Art

[0002] In some cases, such as Figure 1 As shown, it is necessary to partially replace the cooling wall and shell of the blast furnace (for example, replace Figure 1 The parts indicated by the replacement area in the figure, such as the cooling walls of the 6th to 12th sections and the furnace shell of the 6th to 11th sections along the height direction of the blast furnace), due to the technical difficulty and high safety risk of online partial replacement of the blast furnace shell, especially how to hoist and remove the internal components of the blast furnace and transfer them out effectively and safely has become a control difficulty. The blast furnace body is divided into multiple parts from top to bottom, such as the throat, body, waist, belly, hearth, etc. The radial dimensions of different parts are different. In order to be able to hoist the internal components for furnace sections with different radial dimensions, it is necessary to design an internal hoisting plate that can change the radial dimensions. Utility Model Content

[0003] The main purpose of the utility model is to provide a hanging plate for replacing a blast furnace shell, so as to solve the problem that a hanging plate with a fixed size cannot adapt to the lifting requirements of internal components of different furnace sections.

[0004] According to one aspect of the utility model, a hanging tray for replacing a blast furnace shell is provided, comprising:

[0005] Center tube;

[0006] An annular beam, the annular beam is concentrically arranged on the outer side of the central tube;

[0007] A plurality of retractable members, each of which extends outward from the central tube along a plurality of radial directions of the central tube and is connected to the annular beam, and each retractable member can be retracted along the radial direction thereof;

[0008] A plurality of deck boards, each of which is detachably laid between two adjacent retractable members.

[0009] According to an embodiment of the utility model, each retractable member includes a plurality of component segments connected in sequence, and a first component segment of two adjacent component segments can be moved relative to a second component segment via a sliding member or a rolling member thereon to achieve retraction.

[0010] According to an embodiment of the present invention, the second component segment has a cavity, and the first end of the first component segment is configured to move in the cavity.

[0011] According to one embodiment of the utility model, the first end of the first component segment is provided with a first roller that can roll along the inner surface of the second component segment; and / or the lower side of the second end of the first component segment opposite to the first end is provided with a second roller.

[0012] According to one embodiment of the utility model, the first component segment has two side panels arranged on the opposite side walls of its second end, and the two side panels are provided with matching holes on the parts extending downward relative to the side walls. The first component segment has a wheel axle passing through the two matching holes, and the second roller is rotatably arranged on the wheel axle.

[0013] According to one embodiment of the utility model, the central tube is welded with a first connecting plate extending radially and vertically thereof, and a second connecting plate with an L-shaped cross-section is welded to one end of the telescopic member close to the central tube, and the first connecting plate and the second connecting plate are fixed by multiple rows of threaded fasteners distributed vertically; and / or the end of the telescopic member away from the central tube has a flange for preventing the lifting rope from falling off.

[0014] According to one embodiment of the utility model, the hanging plate also includes a diagonal brace connected between the central tube and the component segment closest to the central tube; and / or the opposite side walls of the component segment closest to the central tube respectively extend outwardly with connecting pieces, and the connecting pieces are fixed to the annular beam by threaded fasteners.

[0015] According to an embodiment of the utility model, each floor plank is fan-shaped, and a plurality of floor planks are laid into a plurality of concentric annular layers.

[0016] According to an embodiment of the utility model, a reinforcing rib is protruding from the lower surface of the floor plank, and the floor plank is embedded between two adjacent annular beams through the reinforcing rib.

[0017] According to an embodiment of the utility model, a plurality of lifting ears are evenly arranged along the circumference of the annular beam. The lifting ears are sleeved on the annular beam and have an inner cavity matching the shape of the annular beam and a lifting hole located on the upper side of the inner cavity.

[0018] In the technical solution of the utility model, multiple retractable components extend outward from the central tube along multiple radial directions of the central tube respectively, and each retractable component can be retracted along its radial direction. By retracting the retractable components to adjust their different lengths and laying corresponding planks, a hanging plate with different radial dimensions can be obtained, thereby adapting to the lifting requirements of internal components of furnace sections with different radial dimensions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for use in the embodiment will be briefly introduced below. Obviously, the drawings described below are only some implementation cases of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram showing a partial replacement area of ​​a blast furnace shell according to an embodiment of the utility model is shown;

[0021] Figure 2 Shown is a general schematic diagram of a hanging tray according to an embodiment of the utility model;

[0022] Figure 3 A schematic diagram showing a skeleton of a hanging plate according to an embodiment of the utility model;

[0023] Figure 4 A schematic diagram showing a retractable member according to an embodiment of the utility model;

[0024] Figure 5 A front view showing a component section A according to an embodiment of the present utility model;

[0025] Figure 6 A top view of a component section A according to an embodiment of the present invention is shown;

[0026] Figure 7 A front view of a component section B according to an embodiment of the present utility model is shown;

[0027] Figure 8 A top view of a component section B according to an embodiment of the present invention is shown;

[0028] Fig. 9 A schematic diagram showing a plank according to an embodiment of the present invention;

[0029] Fig.10 A schematic diagram showing a lifting ear according to an embodiment of the utility model is shown.

[0030] Description of reference numerals:

[0031] 10. Center tube; 12. First connecting plate; 14. Threaded fastener; 16. Diagonal brace; 20. Ring beam; 22. Lifting ear; 24. Inner cavity; 26. Lifting hole; 30. Retractable member; 301. Component section A; 302. Component section B; 303. Component section C; 31. First roller; 32. Second roller; 33. Side plate; 34. Matching hole; 35. Axle; 36. Second connecting plate; 37. Flange; 38. Connector; 40. Decking; 42. Reinforcement rib; 100. Lifting plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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 invention.

[0034] refer to Figure 2 and Figure 3 The utility model proposes a hanging platform 100 for replacing a blast furnace shell, which includes: a central tube 10; an annular beam 20, which is concentrically arranged on the outside of the central tube 10; a plurality of retractable components 30, which respectively extend outward from the central tube 10 along a plurality of radial directions of the central tube 10 and are connected to the annular beam 20, each retractable component 30 being retractable along its radial direction; and a plurality of deck boards 40, each deck board 40 being detachably laid between two adjacent retractable components 30.

[0035] In an embodiment of the utility model, a plurality of retractable members 30 extend outward from the central tube 10 along a plurality of radial directions of the central tube 10, respectively, and each retractable member 30 can be retracted along its radial direction. By retracting the retractable members 30 to adjust their different lengths and laying corresponding floor boards 40, a hanging plate 100 with different radial dimensions can be obtained, thereby being able to adapt to the internal component hoisting requirements of furnace sections with different radial dimensions. The annular beam 20 can play a role in supporting the retractable members 30. The floor boards 40 are used for operators to stand, and can also be used to place disassembled components and / or components to be reinstalled. A lifting rope can be set at one end of the retractable member 30 away from the central tube 10 for hoisting disassembled components and / or components to be reinstalled.

[0036] When in use, the telescopic member 30 can be retracted first to adapt to the size of the top opening of the blast furnace, and the hanging plate 100 can be hoisted from the top opening of the blast furnace into the blast furnace by a crane or other hoisting equipment, and then the telescopic member 30 can be extended at the bottom of the furnace to adjust to the required length to adapt to the radial size of the furnace section to be replaced, and the corresponding floor plate 40 can be laid to obtain the adjusted hanging plate 100. At this time, the hanging plate 100 can be hoisted to the corresponding furnace section, and the operator can stand on the floor plate 40 to operate. Since the size of the hanging plate 100 can be adjusted to match the radial size of the furnace section, the operator can approach the inner wall of the blast furnace to operate, and the removed cooling wall can be smoothly hoisted to the hanging plate 100, and the removal and installation of the cooling wall and other furnace internal components are completed. After the component replacement of a furnace section is completed, the telescopic member 30 can be retracted again to adjust the hanging plate 100 to a suitable size to adapt to the component replacement of the next furnace section.

[0037] In some embodiments, each retractable member 30 includes a plurality of sequentially connected component segments, and a first component segment of two adjacent component segments can be moved relative to a second component segment via a sliding member or a rolling member thereon to achieve retraction. Figure 4 Each retractable member 30 includes three sequentially connected component segments, namely component segment A, component segment B, and component segment C. Figure 4 In the figure, they are respectively shown by reference numerals 301, 302, and 303; for the adjacent component segments A and B, the component segment B can be moved relative to the component segment A through the sliding member or rolling member thereon to achieve telescopic expansion; for the adjacent component segments B and C, the component segment C can be moved relative to the component segment B through the sliding member or rolling member thereon to achieve telescopic expansion. It should be understood by those skilled in the art that each retractable member 30 may include fewer (for example, two) or more (for example, more than three) component segments. A plurality of connecting holes arranged along the extension direction thereof can be provided on each component segment. After the telescopic expansion is completed by moving the component segment, the fixed connection of the two adjacent component segments is achieved by the cooperation of the fastener and the connecting hole.

[0038] In some embodiments, the second component segment has a cavity, the first end of the first component segment is configured to move in the cavity, the second end of the first component segment can extend out of the cavity, and the first component segment can be at least partially accommodated in the second component segment, thereby obtaining a more compact volume, reducing weight, and protecting the first component segment. For example, referring to Figure 4 For component segments A and B that are adjacent to each other, component segment A has a cavity, and the first end of component segment B is configured to move in the cavity of component segment A; for component segments B and C that are adjacent to each other, component segment B has a cavity, and the first end of component segment C is configured to move in the cavity of component segment B.

[0039] In some embodiments, the first end of the first component segment is provided with a first roller 31 that can roll along the inner surface of the second component segment; and / or the lower side of the second end of the first component segment opposite to the first end is provided with a second roller 32. By guiding the movement of the first component segment by the roller, the telescopic operation can be made more labor-saving and prevent the component segment from getting stuck. For example, referring to Figure 4 For the adjacent component segments A and B, the first end of the component segment B is provided with a first roller 31 that can roll along the inner surface of the component segment A, and the lower side of the second end of the component segment B opposite to the first end is provided with a second roller 32. The first roller 31 can guide the first end of the component segment B to move along the inner surface of the component segment A to prevent the component segment from getting stuck and unable to be extended and retracted. The second roller 32 can roll along the ground at the bottom of the furnace to guide the movement of the component segment B, making the extension and retraction operation more labor-saving. Figure 4 A similar second roller 32 may be provided at the end of segment A, and a similar first roller 31 may be provided at the end of segment C.

[0040] refer to Figure 7 and Figure 8 In some embodiments, the first component segment (taking component segment B as an example) has two side plates 33 disposed on opposite side walls of its end, and the two side plates 33 are provided with matching holes 34 at the portions extending downward relative to the side walls. The first component segment has a wheel axle 35 passing through the two matching holes 34, and the second roller 32 is rotatably disposed on the wheel axle 35. Although Figure 7 and Figure 8 Only the component segment B is taken as an example to illustrate the arrangement of the second roller 32 , but those skilled in the art should understand that the second roller 32 may be arranged in a similar manner in other component segments.

[0041] refer to Figure 5 and Figure 6 In some embodiments, the central tube 10 is welded with a first connecting plate 12 extending radially and vertically, and the telescopic member 30 is welded with a second connecting plate 36 with an L-shaped cross section at one end close to the central tube 10. The first connecting plate 12 and the second connecting plate 36 are fixed by multiple rows of threaded fasteners 14 (such as bolts) distributed vertically. Thus, a stable connection between the central tube 10 and the telescopic member 30 is achieved. A reinforcing plate extending in the radial direction can be provided on the inner side of the central tube 10 to improve the strength.

[0042] refer to Figure 3 In some embodiments, the end of the telescopic member 30 away from the central tube 10 has a flange 37 for preventing the rope from falling off, and the flange 37 protrudes relative to the outer wall of the telescopic member 30. When in use, a rope can be hung on the end of the telescopic member 30 away from the central tube 10 to lift the removed components and the components to be reinstalled, and the flange 37 prevents the rope from falling off.

[0043] refer to Figure 4 and Figure 5 In some embodiments, the hanging plate 100 also includes a diagonal brace 16 connected between the central tube 10 and the component segment (component segment A) closest to the central tube 10 to further enhance the connection strength between the central tube 10 and the retractable member 30 and improve the supporting force of the retractable member 30.

[0044] refer to Figure 5 and Figure 6 In some embodiments, the two opposite side walls of the component segment (component segment A) closest to the central tube 10 respectively extend outwardly with connecting pieces 38, and the connecting pieces 38 are fixed to the annular beam 20 by threaded fasteners (such as bolts), thereby realizing a fixed connection between the telescopic member 30 and the annular beam 20. The annular beam 20 may be an I-beam, and the connecting piece 38 is fixed to the top of the annular beam 20 by threaded fasteners.

[0045] refer to Figure 2 and Fig. 9 In some embodiments, each floor board 40 is fan-shaped, and multiple floor boards 40 are laid into multiple concentric annular layers. The floor boards 40 can have a variety of different specifications. After adjusting the length of the retractable member 30, the floor boards 40 of corresponding specifications are selected and laid in the corresponding area.

[0046] refer to Fig. 9 In some embodiments, a reinforcing rib 42 is convexly provided on the lower surface of the deck 40, and the deck 40 is embedded between two adjacent annular beams 20 through the reinforcing rib 42, thereby realizing the detachable installation of the deck 40. The reinforcing rib 42 can be enclosed in a fan shape matching the space between two adjacent annular beams 20.

[0047] refer to Figure 3 and Fig.10 In some embodiments, a plurality of lifting ears 22 are evenly arranged along the circumference of the annular beam 20. The lifting ears 22 are sleeved on the annular beam 20 and have an inner cavity 24 that matches the shape of the annular beam 20 (for example, the cross-sections of the annular beam 20 and the inner cavity 24 are both I-shaped) and a lifting hole 26 located on the upper side of the inner cavity 24. The lifting hole 26 is used to cooperate with equipment such as a crane to realize the lifting of the entire hanging plate 100. By designing an inner cavity that matches the shape of the annular beam 20, the matching strength between the lifting ears 22 and the annular beam 20 can be improved.

[0048] In a specific embodiment, the weight of the hanging platform is 38793 kg, the maximum diameter when expanded is Φ12200 mm, and the minimum diameter when reduced is Φ7300 mm. 20 retractable components are evenly arranged along the circumferential direction, each retractable component has 3 component sections, and the planks are laid in 6 circles in total.

[0049] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the utility model (including the claims) is limited to these examples; under the idea of ​​the embodiments of the utility model, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the above embodiments of the utility model, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the utility model should be included in the protection scope of the embodiments of the utility model.

Claims

1. A hanging tray (100) for replacing a blast furnace shell, characterized in that: include: Central tube (10); an annular beam (20), the annular beam (20) being arranged concentrically on the outside of the central tube (10); a plurality of retractable members (30), the plurality of retractable members (30) respectively extending outward from the central tube (10) along a plurality of radial directions of the central tube (10) and connected to the annular beam (20), each of the retractable members (30) being retractable along the radial direction thereof; A plurality of floor boards (40), each of the floor boards (40) being detachably laid between two adjacent retractable members (30).

2. The hanging plate (100) according to claim 1, characterized in that: Each of the retractable components (30) comprises a plurality of component segments connected in sequence, and a first component segment of two adjacent component segments can be moved relative to a second component segment via a sliding member or a rolling member thereon to achieve retraction.

3. The hanging plate (100) according to claim 2, characterized in that: The second set of segments has a cavity, and the first end of the first set of segments is configured to move in the cavity.

4. The hanging plate (100) according to claim 3, characterized in that: The first end of the first component segment is provided with a first roller (31) that can roll along the inner surface of the second component segment; and / or the lower side of the second end of the first component segment opposite to the first end is provided with a second roller (32).

5. The hanging plate (100) according to claim 4, characterized in that: The first assembly segment has two side plates (33) arranged on opposite side walls of the second end thereof, and the two side plates (33) are provided with matching holes (34) in portions extending downward relative to the side walls. The first assembly segment has a wheel axle (35) passing through the two matching holes (34), and the second roller (32) is rotatably arranged on the wheel axle (35).

6. The hanging plate (100) according to claim 1, characterized in that: The central tube (10) is welded with a first connecting plate (12) extending radially and vertically thereof, and an end of the telescopic member (30) close to the central tube (10) is welded with a second connecting plate (36) with an L-shaped cross section, and the first connecting plate (12) and the second connecting plate (36) are fixed by multiple rows of threaded fasteners (14) distributed vertically; and / or One end of the retractable member (30) away from the central tube (10) has a flange (37) for preventing the lifting rope from falling off.

7. The hanging plate (100) according to claim 2, characterized in that: It also includes a diagonal brace (16) connected between the central tube (10) and the component segment closest to the central tube (10); and / or Connecting pieces (38) are respectively extended outward from opposite side walls of the component section closest to the central tube (10), and the connecting pieces (38) are fixed to the annular beam (20) via threaded fasteners.

8. The hanging plate (100) according to claim 1, characterized in that: Each of the floor boards (40) is fan-shaped, and a plurality of the floor boards (40) are laid into a plurality of concentric annular layers.

9. The hanging plate (100) according to claim 1, characterized in that: A reinforcing rib (42) is protruding from the lower surface of the floor board (40), and the floor board (40) is embedded between two adjacent annular beams (20) via the reinforcing rib (42).

10. The hanging plate (100) according to claim 1, characterized in that: A plurality of lifting ears (22) are evenly arranged along the circumferential direction on the annular beam (20); the lifting ears (22) are sleeved on the annular beam (20) and have an inner cavity (24) matching the shape of the annular beam (20) and a lifting hole (26) located on the upper side of the inner cavity (24).

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