Blast furnace downcomer hoisting structure

Abstract

The utility model discloses a blast furnace downcomer hoisting structure, belongs to the field of pipeline hoisting, and aims to improve the firmness and reliability of connection between a lifting lug and a downcomer. Comprising a downcomer and lifting lugs, the lifting lug comprises two main lifting lug plates, and two side reinforcing plates are arranged between the two main lifting lug plates; the bottom surfaces of the side reinforcing plates are flush with the bottom surface of the main lifting lug plate to form an arc-shaped surface matched with the outer wall of the blast furnace downcomer; the side reinforcing plates are perpendicular to the axial direction of the downcomer, and the bottom surfaces are welded on the outer wall of the downcomer; a cavity is defined by the two main lifting lug plates, the two side reinforcing plates and the outer wall of the descending pipe, and an internal reinforcing structure is arranged in the cavity. The side reinforcing plate increases the connecting area of the lifting lug and the downcomer, disperses the acting force on the wall of the downcomer and reduces the pressure intensity at the position where the lifting lug is installed on the downcomer, so that the lifting requirement can be met without installing an inner support in the downcomer. And the connection area of the lifting lug and the downcomer is increased, so that the reliability of connection between the lifting lug and the downcomer is ensured, and the safety and reliability of lifting are ensured.

Description

Technical Field

[0001] The utility model belongs to the field of pipeline hoisting, in particular to a blast furnace downcomer hoisting structure. Background Art

[0002] In the installation of blast furnace system in metallurgical industry, the installation of downcomer is one of the important steps. 3 The weight of the downcomer of a blast furnace is more than 90 tons. At present, when hoisting the downcomer, a single lug is usually installed on the downcomer for hoisting. In addition to installing a single lug on the outer wall of the downcomer, it is also necessary to use profiles at the position of the lug inside the downcomer for internal support, which not only increases the installation process, but also wastes materials. Utility Model Content

[0003] The utility model aims to provide a blast furnace downcomer hoisting structure, which improves the firmness and reliability of the connection between the lifting lug and the downcomer, realizes hoisting without adding internal supports in the downcomer, and helps to reduce the amount of lifting lug material while ensuring the safety of the lifting lug.

[0004] The technical scheme adopted by the utility model is: a blast furnace down pipe hoisting structure, comprising a down pipe and a lifting lug; the lifting lug comprises two main lifting lug plates arranged opposite to each other in the horizontal direction, and the main lifting lug plates are provided with lifting holes; two side reinforcing plates are arranged between the two main lifting lug plates, the two side reinforcing plates are separated at the front and rear sides of the main lifting lug plates in the longitudinal direction, and the two ends of the two side reinforcing plates are respectively fixedly connected with the main lifting lug plates on the left and right sides; the bottom surface of the side reinforcing plate is flush with the bottom surface of the main lifting lug plate to form an arc surface adapted to the outer wall of the blast furnace down pipe; the main lifting lug plate is parallel to the axial direction of the down pipe, and its bottom surface is welded to the outer wall of the down pipe; the side reinforcing plate is perpendicular to the axial direction of the down pipe, and its bottom surface is welded to the outer wall of the down pipe; a cavity is formed by surrounding the two main lifting lug plates, the two side reinforcing plates and the outer wall of the down pipe, and an internal reinforcing structure is arranged in the cavity.

[0005] Furthermore, the internal reinforcement structure includes a longitudinal center plate and a transverse center plate; one end of the longitudinal center plate is fixed to the side reinforcement plate on the front side, and the other end is fixed to the side reinforcement plate on the rear side; the bottom surface of the longitudinal center plate is welded to the outer wall of the downcomer;

[0006] The transverse center plate includes a left side plate and a right side plate; the left end of the left side plate is fixed to the left main hanging ear plate, the right end is fixed to the longitudinal center plate, and the bottom surface is welded to the outer wall of the down tube; the left end of the right side plate is fixed to the longitudinal center plate, the right end is fixed to the right side plate, and the bottom surface is welded to the outer wall of the down tube.

[0007] Furthermore, the left side plate and the right side plate of the transverse center plate each have only one plate, and the transverse center plate and the longitudinal center plate form a cross shape.

[0008] Furthermore, the bottom surface of the transverse center plate is in an arc shape adapted to the downcomer of the blast furnace.

[0009] Furthermore, a reinforcing triangular plate is welded between the outer side of the main lifting ear plate and the outer wall of the downcomer, and the bottom surface of the reinforcing triangular plate and the bottom surface of the side reinforcing plate share an arc-shaped surface.

[0010] Furthermore, three reinforcing triangular plates are evenly distributed on each main hanging ear plate along the longitudinal direction.

[0011] The beneficial effects of the utility model are as follows: the structure adopts the arrangement of two main lifting lug plates and the side reinforcing plate to connect the two main lifting lug plates together, thereby increasing the integrity of the main lifting lug plates, and the bottom surface of the side reinforcing plate is flush with the bottom surface of the main lifting lug plate to form an arc surface adapted to the outer wall of the blast furnace down pipe, and is welded to the outer wall of the down pipe, thereby increasing the connection area between the lifting lug and the down pipe, dispersing the force on the down pipe wall, and reducing the pressure at the down pipe installation lifting lug, so that the lifting requirements can be met without installing an internal support in the down pipe. The increase in the connection area between the lifting lug and the down pipe ensures the reliability of the connection between the lifting lug and the down pipe, thereby ensuring the safety and reliability of the lifting.

[0012] Furthermore, the two main lifting lug plates are connected together by two side reinforcement plates, a longitudinal center plate and a transverse center plate to form an integral frame structure with good strength, safety and reliability. The strengthening effect of the triangle plate is further improved to further improve the connection reliability between the lifting lug and the down pipe, thereby facilitating the reduction of the thickness and other dimensions of the main lifting lug plate, the amount of lifting lug material used, and the overall weight of the lifting lug. The lifting lug with reduced overall weight and size attached to the down pipe has less impact on the down pipe, so after the down pipe is hoisted, the lifting lug does not need to be removed, reducing the risk of high-altitude operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the front view of the utility model;

[0014] Figure 2 It is a top view of the utility model;

[0015] Figure 3 It is the left view of the utility model;

[0016] Figure 4 The utility model is a schematic diagram of the lifting ear structure disclosed in the present invention.

[0017] In the figure, there are a main lifting ear plate 1, a side reinforcing plate 2, a longitudinal center plate 3, a transverse center plate 4, a left side plate 4A, a right side plate 4B, a reinforcing triangular plate 5, and a lifting hole 6. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0019] In the present invention, the terms "longitudinal", "vertical", "up", "vertical", "horizontal", "top", "bottom", "left" and "right" indicate directions or positional relationships based on the attached Figure 1 The orientation or position relationship shown is only for the convenience of describing the present invention, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] The utility model discloses a blast furnace downcomer hoisting structure, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes a down pipe 7 and a lifting lug; Figure 4 As shown, the lifting ear comprises two main lifting ear plates 1 which are arranged opposite to each other in the horizontal direction, and the main lifting ear plates 1 are provided with lifting holes 6; two side reinforcing plates 2 are arranged between the two main lifting ear plates 1, and the two side reinforcing plates 2 are separated at the front and rear sides of the main lifting ear plates 1 in the longitudinal direction, and the two ends of the two side reinforcing plates 2 are respectively fixedly connected with the main lifting ear plates 1 on the left and right sides; the bottom surface of the side reinforcing plate 2 is flush with the bottom surface of the main lifting ear plate 1 to form an arc surface adapted to the outer wall of the blast furnace downcomer;

[0021] The main lifting lug plate 1 is parallel to the axial direction of the down pipe 7, and its bottom surface is welded to the outer wall of the down pipe 7; the side reinforcement plate 2 is perpendicular to the axial direction of the down pipe 7, and its bottom surface is welded to the outer wall of the down pipe 7; a cavity is formed by the two main lifting lug plates 1, the two side reinforcement plates 2 and the outer wall of the down pipe 7, and an internal reinforcement structure is arranged in the cavity.

[0022] This structure adopts the setting of two main lifting lug plates 1. Compared with the traditional single-piece lifting lug, the position of the lifting point is increased, thereby reducing the single-point force on the down pipe 7. The two main lifting lug plates 1 are connected together by the side reinforcing plate 2, which increases the integrity of the main lifting lug plates 1. The bottom surface of the side reinforcing plate 2 is flush with the bottom surface of the main lifting lug plate 1 to form an arc surface adapted to the outer wall of the blast furnace down pipe, and is welded to the outer wall of the down pipe 7, which increases the connection area between the lifting lug and the down pipe 7, further disperses the force on the wall of the down pipe 7, and reduces the pressure at the down pipe 7 where the lifting lug is installed, so that there is no need to install an internal support in the down pipe 7 to meet the lifting requirements. The increase in the connection area between the lifting lug and the down pipe 7 ensures the reliability of the connection between the lifting lug and the down pipe 7, thereby ensuring the safety and reliability of the lifting.

[0023] The internal reinforcement structure can be a triangular reinforcement rib, which is welded between the down tube 7 and the main lifting ear plate 1. In the present embodiment, in order to improve the safety and reliability of the connection between the lifting ear and the down tube 7 while further improving the overall strength of the lifting ear, preferably, the internal reinforcement structure includes a longitudinal center plate 3 and a transverse center plate 4; one end of the longitudinal center plate 3 is fixed to the side reinforcement plate 2 on the front side, and the other end is fixed to the side reinforcement plate 2 on the rear side; the bottom surface of the longitudinal center plate 3 is welded to the outer wall of the down tube 7; the transverse center plate 4 includes a left side plate 4A and a right side plate 4B; the left end of the left side plate 4A is fixed to the main lifting ear plate 1 on the left, the right end is fixed to the longitudinal center plate 3, and the bottom surface is welded to the outer wall of the down tube 7; the left end of the right side plate 4B is fixed to the longitudinal center plate 3, the right end is fixed to the right side plate 4B, and the bottom surface is welded to the outer wall of the down tube 7.

[0024] There can be multiple transverse center panels 4. To avoid wasting materials, preferably, the left side panel 4A and the right side panel 4B of the transverse center panel 4 are each only one, and the transverse center panel 4 and the longitudinal center panel 3 form a cross shape.

[0025] The main lifting eye plate 1, the side reinforcement plate 2, the longitudinal center plate 3 and the transverse center plate 4 form a frame structure, and the strength is guaranteed. Under the premise of meeting the same lifting capacity, it is beneficial to reduce the amount of lifting eye materials and reduce the weight of the lifting eye.

[0026] In order to increase the contact area between the transverse center plate 4 and the downcomer 7, the bottom surface of the transverse center plate 4 is in an arc shape adapted to the downcomer of the blast furnace.

[0027] In order to further improve the connection reliability between the main lifting eye plate 1 and the down pipe 7, a reinforcing triangular plate 5 is welded between the outer side of the main lifting eye plate 1 and the outer wall of the down pipe 7, and the bottom surface of the reinforcing triangular plate 5 and the bottom surface of the side reinforcing plate 2 share an arc surface. The outer side of the main lifting eye plate 1 refers to the side where the transverse center plate 4 is not provided, that is, the left side of the main lifting eye plate 1 on the left side and the right side of the main lifting eye plate 1 on the right side.

[0028] Three reinforcing triangular plates 5 are evenly distributed on each main hanging ear plate 1 along the longitudinal direction.

[0029] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A blast furnace downcomer hoisting structure, comprising a downcomer (7) and a lifting lug; characterized in that: The lifting lug comprises two main lifting lug plates (1) which are arranged opposite to each other in the transverse direction, and the main lifting lug plates (1) are provided with lifting holes (6); two side reinforcing plates (2) are arranged between the two main lifting lug plates (1), and the two side reinforcing plates (2) are arranged at the front and rear sides of the main lifting lug plates (1) in the longitudinal direction, and the two ends of the two side reinforcing plates (2) are respectively fixedly connected to the main lifting lug plates (1) on the left and right sides; the bottom surface of the side reinforcing plate (2) is flush with the bottom surface of the main lifting lug plate (1) to form an arc surface adapted to the outer wall of the blast furnace downcomer; The main lifting lug plate (1) is parallel to the axial direction of the down pipe (7), and its bottom surface is welded to the outer wall of the down pipe (7); the side reinforcement plate (2) is perpendicular to the axial direction of the down pipe (7), and its bottom surface is welded to the outer wall of the down pipe (7); a cavity is formed by the two main lifting lug plates (1), the two side reinforcement plates (2) and the outer wall of the down pipe (7), and an internal reinforcement structure is arranged in the cavity.

2. The blast furnace downcomer hoisting structure according to claim 1, characterized in that: The internal reinforcement structure comprises a longitudinal center plate (3) and a transverse center plate (4); one end of the longitudinal center plate (3) is fixed to the side reinforcement plate (2) on the front side, and the other end is fixed to the side reinforcement plate (2) on the rear side; the bottom surface of the longitudinal center plate (3) is welded to the outer wall of the down pipe (7); The transverse center plate (4) comprises a left side plate (4A) and a right side plate (4B); the left end of the left side plate (4A) is fixed to the left main hanging ear plate (1), the right end is fixed to the longitudinal center plate (3), and the bottom surface is welded to the outer wall of the down pipe (7); the left end of the right side plate (4B) is fixed to the longitudinal center plate (3), the right end is fixed to the right side plate (4B), and the bottom surface is welded to the outer wall of the down pipe (7).

3. The blast furnace downcomer hoisting structure according to claim 2, characterized in that: The left side plate (4A) and the right side plate (4B) of the transverse center plate (4) each consist of only one piece, and the transverse center plate (4) and the longitudinal center plate (3) form a cross shape.

4. The blast furnace downcomer hoisting structure according to claim 2 or 3, characterized in that: The bottom surface of the transverse center plate (4) is in an arc shape adapted to the downcomer of the blast furnace.

5. The blast furnace downcomer hoisting structure according to any one of claims 1 to 3, characterized in that: A reinforcing triangular plate (5) is welded between the outer side of the main hanging ear plate (1) and the outer wall of the down pipe (7), and the bottom surface of the reinforcing triangular plate (5) and the bottom surface of the side reinforcing plate (2) are in the same arc shape.

6. The blast furnace downcomer hoisting structure according to claim 5, characterized in that: Three reinforcing triangular plates (5) are evenly distributed on each main hanging ear plate (1) along the longitudinal direction.

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