Device for mounting furnace shell and cooling wall in blast furnace maintenance

Abstract

The utility model relates to a device for installing a furnace shell and a cooling wall in blast furnace maintenance, which comprises a primary hoisting device (3) and a secondary hoisting device (2), the primary hoisting device (3) comprises a primary annular beam (32), a main hoisting beam (33) and a secondary hoisting beam (35), the primary annular beam (32) is respectively connected with the main hoisting beam (33) or the secondary hoisting beam (35), the main hoisting beam (33) is connected with a primary platform (4), and the secondary hoisting beam (35) is erected on the main hoisting beam (33); the second-stage hoisting device (2) comprises a second-stage annular beam (21) arranged on the second-stage platform (5), and electric hoists are arranged on the second-stage annular beam (21) and the first-stage annular beam (32). According to the device, the annular hoisting electric hoist is mounted by using the blast furnace frame mounting partition platform, so that flexible arrangement, high efficiency and low-cost mounting can be realized. The problems that no installation equipment exists in an existing frame platform, and the installation workload and difficulty of a furnace shell and a cooling wall are large are solved.

Description

Technical Field

[0001] The utility model relates to a device for installing a furnace shell and a cooling wall during blast furnace maintenance, belonging to the technical field of blast furnace maintenance equipment. Background Art

[0002] The main body of the blast furnace is mainly composed of refractory lining, air inlet device, furnace shell steel structure and auxiliary cooling wall, and electrical control system. Generally, after 8 to 10 years of use, the refractory lining, furnace shell steel structure and other equipment must be removed and restored. During the maintenance of the blast furnace, the main steel structure and the auxiliary cooling wall are destructively removed, and the installation time and quality requirements are particularly strict. The blast furnace body is in the surrounding frame platform, and there is no equipment available for installation in the frame platform. The large crane outside the frame platform cannot meet the distance reasons, and the installation requires large equipment such as iron-out plant, hot blast furnace, gravity dust collector, belt corridor, etc. around the blast furnace body. Therefore, the installation of the furnace shell steel structure and the auxiliary cooling wall is carried out in a narrow and confined space. In addition, the installation weight of the furnace shell steel structure and the auxiliary cooling wall is large (the furnace shell and the auxiliary cooling wall generally weigh 2000t), which makes the actual installation inconvenient and affects the installation progress. Utility Model Content

[0003] The technical problem to be solved by the utility model is that there is no equipment available for installation in the existing frame platform, and the installation workload of the furnace shell and the cooling wall is large and difficult.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a device for installing a furnace shell and a cooling wall during blast furnace maintenance, comprising a primary lifting device and a secondary lifting device arranged at vertical intervals, the primary lifting device comprising a primary annular beam, a main lifting beam and a secondary lifting beam, the upper end of the primary annular beam is respectively connected to the lower end of the main lifting beam or the secondary lifting beam, the primary annular beam is disconnected at one point on the circumference, and extends and bends outward from a primary platform, the main lifting beams are arranged at intervals on both sides of the opening of the primary annular beam, and are connected to the upper end of the primary platform, the secondary lifting beams are arranged at intervals on the main lifting beam, and a primary lifting electric hoist is arranged on the primary annular beam; the secondary lifting device comprises a secondary annular beam, the secondary annular beam is arranged on the secondary platform, one side of the secondary annular beam is disconnected, and extends and bends outward from the opening end of the secondary platform, and a secondary lifting electric hoist is arranged on the secondary annular beam.

[0005] The device further comprises a platform beam, which is arranged at intervals on the primary platform and below the main suspension beam, and a primary steel plate is laid on the platform beam.

[0006] Among them, the above-mentioned device also includes connecting channel steel and connecting rib plates. The primary annular beam is connected to the lower end of the main suspension beam or the secondary suspension beam respectively through the connecting channel steel and the connecting rib plates, and the connection points are evenly spaced.

[0007] Among them, the above-mentioned device also includes a probe horizontal support, one end of which is connected to the extended end of the first-level annular beam, and the other end is connected to the outer side of the first-level platform.

[0008] Among them, the above-mentioned device also includes a reinforcement beam, which is arranged at intervals at the opening of the secondary platform and is connected to the upper end of the secondary annular beam.

[0009] Furthermore, the secondary platform in the above device is paved with a secondary steel plate.

[0010] Among them, the above-mentioned device also includes a lifting beam and a connecting piece. The lifting beam is erected on the secondary platform perpendicular to the opening direction of the secondary annular beam and is connected to the secondary annular beam through the connecting piece.

[0011] Furthermore, the above device also includes a double hanging beam, wherein there are two hoisting beams which are arranged at an interval, and both ends of the double hanging beam are respectively connected to the hoisting beam.

[0012] Furthermore, a centerline hole is vertically arranged in the middle of the double-jointed suspension beam in the above device.

[0013] Wherein, the above-mentioned device also includes an oblique support member, and the secondary annular beam extends out of the secondary platform end and is connected to the secondary platform through the oblique support member.

[0014] The beneficial effects of the utility model are as follows: the device has a simple structure and is easy to use. The device uses the blast furnace frame to install the partition platform, and two 8t electric hoists are installed under the bottom of the ring crane; it serves as a fully covered and dead angle-free installation facility for the furnace shell and the auxiliary cooling wall on site; the original frame platform is then used as a material receiving and operating platform; the furnace top crane or the automobile crane on the iron-making yard is used to complete the vertical transportation of objects to the material receiving platform; after completion, the partition platform and the ring crane under the platform are removed. In addition, this device can also be flexibly set on the frame platform according to the needs of the maintenance site; it can also meet the efficient and low-cost installation of the furnace shell steel structure and the auxiliary cooling wall during the maintenance of the blast furnace body, which has a promotional effect and reference significance for shortening the construction period, ensuring safety and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the installation structure of the utility model.

[0016] Figure 2 This is a schematic diagram of the first-level platform structure of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the utility model after the first-level platform is installed with a first-level lifting device.

[0018] Figure 4 It is a schematic diagram of the connection structure between the primary annular beam and the main suspension beam of the utility model.

[0019] Figure 5 It is a schematic diagram of the connection structure between the primary annular beam and the secondary suspension beam of the utility model.

[0020] Figure 6 It is a schematic diagram of the secondary platform structure of the utility model.

[0021] Figure 7 It is a structural schematic diagram of the utility model after the secondary platform is installed with the secondary lifting device.

[0022] Figure 8 This is a schematic diagram of the secondary annular beam connection structure of the utility model.

[0023] Figure numerals: 1 is the furnace body, 2 is the secondary lifting device, 21 is the secondary annular beam, 22 is the secondary steel plate, 23 is the reinforcement beam, 24 is the lifting beam, 25 is the double-jointed lifting beam, 251 is the center line hole, 3 is the primary lifting device, 31 is the horizontal support of the probe, 32 is the primary annular beam, 33 is the main lifting beam, 34 is the primary steel plate, 35 is the secondary lifting beam, 36 is the platform beam, 38 is the connecting channel steel, 39 is the connecting rib plate, 4 is the primary platform, and 5 is the secondary platform. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] like Figures 1 to 8As shown, the device for installing the furnace shell and cooling wall during the maintenance of a blast furnace of the utility model comprises a primary lifting device 3 and a secondary lifting device 2 which are arranged at intervals vertically, the primary lifting device 3 comprises a primary annular beam 32, a main hanging beam 33 and a secondary hanging beam 35, the upper end of the primary annular beam 32 is respectively connected to the lower end of the main hanging beam 33 or the secondary hanging beam 35, the primary annular beam 32 is disconnected at one place on the circumference, and extends and bends outward from the primary platform 4, the main hanging beam 33 is arranged at intervals on both sides of the opening of the primary annular beam 32, and is connected to the upper end of the primary platform 4, the secondary hanging beam 35 is erected at intervals on the main hanging beam 33, and a primary lifting electric hoist is arranged on the primary annular beam 32; the secondary lifting device 2 comprises a secondary annular beam 21, the secondary annular beam 21 is arranged on the secondary platform 5, one side of the secondary annular beam 21 is disconnected on the circumference, and extends and bends outward from the opening end of the secondary platform 5, and a secondary lifting electric hoist is arranged on the secondary annular beam 21. Those skilled in the art can understand that it can be flexibly set up on the frame platform according to the needs of the maintenance site, so it is necessary to install a special and special device for the ring hoist under the partition platform at +33.36m and +49.843m, that is, the first-level hoisting device 3 and the second-level hoisting device 2, to meet the installation process requirements of the furnace shell steel structure and the auxiliary cooling wall, and the existing +33.36m partition platform is the first-level platform 4, and the +49.843m partition platform is the second-level platform 5. At the same time, the first-level hoisting device 3 and the second-level hoisting device 2 are based on the on-site platform installation, so that it is actually only necessary to transport a single furnace shell and cooling wall to the top of the iron-making yard, and then transport it vertically and horizontally to the corresponding material receiving platform by the furnace top hoist, and then install it by the first-level hoisting device 3 and the second-level hoisting device 2. Specifically, the first-level hoisting device 3 includes a first-level annular beam 32, a main hanging beam 33 and a secondary hanging beam 35. In practice, the upper end of the first-level annular beam 32 is respectively connected to the lower end of the main hanging beam 33 or the secondary hanging beam 35, and the first-level annular beam 32 is disconnected at one point on the circumference and extends and bends outward from the first-level platform 4, so that the entire first-level annular beam 32 is a circular ring structure with a notch, and the main hanging beams 33 are arranged at intervals on both sides of the opening of the first-level annular beam 32 and connected to the upper end of the first-level platform 4 to fix the main hanging beam 33; at the same time, the secondary hanging beams 35 are arranged at intervals on the main hanging beam 33 to realize the secondary hanging beam 35. The secondary hoisting device 2 includes a secondary ring beam 21, which is actually arranged on the secondary platform 5. Similarly, one side of the circumference of the secondary ring beam 21 is disconnected, and the secondary ring beam 21 is extended and bent outward from the open end of the secondary platform 5. Similarly, the entire secondary ring beam 21 is a circular structure with a notch. At the same time, a secondary hoisting electric hoist is arranged on the secondary ring beam 21. The primary hoisting electric hoist and the secondary hoisting electric hoist are used to meet the +26m upper and lower furnace shell steel structure and the auxiliary cooling wall installation process requirements.

[0026] Preferably, the device further comprises a platform beam 36, which is arranged at intervals on the primary platform 4 and is located below the main suspension beam 33, and a primary steel plate 34 is laid on the platform beam 36. It can be understood by those skilled in the art that, for the convenience of operation, the device preferably arranges the platform beam 36 at intervals on the primary platform 4 and is located below the main suspension beam 33, and a primary steel plate 34 is laid on the platform beam 36, so as to realize the laying of the working table.

[0027] Preferably, the above device further comprises a connecting channel steel 38 and a connecting rib plate 39, and the primary annular beam 32 is respectively connected to the lower end of the main suspension beam 33 or the secondary suspension beam 35 through the connecting channel steel 38 and the connecting rib plate 39, and the connection points are evenly spaced. It can be understood by those skilled in the art that, in order to facilitate the connection of the primary annular beam 32 with the main suspension beam 33 or the secondary suspension beam 35, the present device is preferably provided with a connecting channel steel 38 and a connecting rib plate 39, and the primary annular beam 32 is respectively connected to the lower end of the main suspension beam 33 or the secondary suspension beam 35 through the connecting channel steel 38 and the connecting rib plate 39, and the connection points are evenly spaced to ensure the hoisting stability of the primary annular beam 32.

[0028] Preferably, the above device further includes a probe horizontal support 31, one end of the probe horizontal support 31 is connected to the extended end of the primary annular beam 32, and the other end is connected to the outer side of the primary platform 4. Those skilled in the art can understand that, in order to ensure the structural strength of the extended end of the primary annular beam 32, the present device is preferably provided with a probe horizontal support 31, and one end of the probe horizontal support 31 is connected to the extended end of the primary annular beam 32, and the other end is connected to the outer side of the primary platform 4.

[0029] Preferably, the above device further includes a reinforcement beam 23, which is arranged at intervals at the opening of the secondary platform 5 and connected to the upper end of the secondary annular beam 21. Those skilled in the art will appreciate that, in order to increase the fixing points of the secondary annular beam 21 and ensure the structural strength of the opening of the secondary platform 5, the device preferably arranges the reinforcement beam 23 at intervals at the opening of the secondary platform 5 and connects the upper ends of the secondary annular beam 21.

[0030] Preferably, the secondary platform 5 in the above device is paved with a secondary steel plate 22. Those skilled in the art will appreciate that, for ease of operation, the device is preferably paved with a secondary steel plate 22 on the secondary platform 5.

[0031] Preferably, the above device also includes a hoisting beam 24 and a connecting piece, wherein the hoisting beam 24 is erected on the secondary platform 5 perpendicular to the opening direction of the secondary annular beam 21, and is connected to the secondary annular beam 21 through a connecting piece. It can be understood by those skilled in the art that, in order to increase the supporting structural strength of the secondary annular beam 21 and avoid the appearance of a long unfixed section, the device preferably erects the hoisting beam 24 on the secondary platform 5 perpendicular to the opening direction of the secondary annular beam 21, and is connected to the secondary annular beam 21 through a connecting piece, so as to ensure the stable hoisting operation of the secondary hoisting electric hoist.

[0032] Preferably, the device further comprises a double hanging beam 25, the hoisting beam 24 is two and is arranged at intervals, and the two ends of the double hanging beam 25 are respectively connected to the hoisting beam 24. It can be understood by those skilled in the art that the device preferably has two hoisting beams 24 and is arranged at intervals, and the two ends of the double hanging beam 25 are respectively connected to the hoisting beam 24, so as to ensure the stability of the hoisting structure, and at the same time facilitate the hoisting needs when installing the hoisting beam 24 for installing the lower facilities, the auxiliary installation of the furnace top part of the round table furnace shell and spare parts, and at the same time facilitate the installation and positioning of the furnace shell.

[0033] Preferably, the double hanging beam 25 in the above device is vertically provided with a centerline hole 251 in the middle. Those skilled in the art can understand that, since the centerline hole 251 is the vertical centerline of the furnace body when the furnace shell is hung and installed, and controls the installation radius and vertical center deviation of each furnace shell with different elevations, it ensures that the vertical center deviation of the furnace body is controlled after the overall installation of the furnace shell is completed. Therefore, the device actually preferably vertically provides a centerline hole 251 in the middle of the double hanging beam 25, so that the centerline hole 251 is located on the central axis of the furnace body 1.

[0034] Preferably, the device further comprises an oblique support, and the end of the secondary annular beam 21 extending out of the secondary platform 5 is connected to the secondary platform 5 through the oblique support. It can be understood by those skilled in the art that in order to ensure the support strength of the open end of the secondary annular beam 21, the device preferably connects the end of the secondary annular beam 21 extending out of the secondary platform 5 to the secondary platform 5 through the oblique support. The oblique support can be a profile such as a channel steel.

Claims

1. A device for installing the furnace shell and cooling wall during blast furnace maintenance, characterized in that: The invention comprises a primary hoisting device (3) and a secondary hoisting device (2) which are arranged at intervals in a vertical direction. The primary hoisting device (3) comprises a primary annular beam (32), a main hanging beam (33) and a secondary hanging beam (35). The upper end of the primary annular beam (32) is respectively connected to the lower end of the main hanging beam (33) or the secondary hanging beam (35). The primary annular beam (32) is disconnected at one point on the circumference and extends and bends outward from the primary platform (4). The main hanging beam (33) is arranged at intervals between the openings of the primary annular beam (32). side and connected to the upper end of the primary platform (4); the secondary lifting beam (35) is arranged on the main lifting beam (33) at intervals; the primary annular beam (32) is provided with a primary lifting electric hoist; the secondary lifting device (2) comprises a secondary annular beam (21); the secondary annular beam (21) is arranged on the secondary platform (5); one side of the circumference of the secondary annular beam (21) is disconnected and extends and bends outside the opening end of the secondary platform (5); the secondary annular beam (21) is provided with a secondary lifting electric hoist.

2. The device for installing the furnace shell and cooling wall during blast furnace maintenance according to claim 1, characterized in that: It also includes a platform beam (36), which is arranged at intervals on the primary platform (4) and is located below the main suspension beam (33), and a primary steel plate (34) is laid on the platform beam (36).

3. The device for installing the furnace shell and cooling wall during blast furnace maintenance according to claim 1, characterized in that: It also includes a connecting channel steel (38) and a connecting rib plate (39), and the primary annular beam (32) is connected to the lower end of the main suspension beam (33) or the secondary suspension beam (35) through the connecting channel steel (38) and the connecting rib plate (39), and the connection points are evenly spaced.

4. The device for installing the furnace shell and cooling wall during blast furnace maintenance according to claim 1, characterized in that: It also comprises a probe horizontal support (31), one end of which is connected to the extended end of the primary annular beam (32), and the other end of which is connected to the outer side of the primary platform (4).

5. The device for installing the furnace shell and cooling wall during blast furnace maintenance according to claim 1, characterized in that: It also includes a reinforcing beam (23), which is arranged at intervals at the opening of the secondary platform (5) and is connected to the upper end of the secondary annular beam (21).

6. The device for installing the furnace shell and cooling wall during blast furnace maintenance according to claim 5, characterized in that: The secondary platform (5) is paved with a secondary steel plate (22).

7. The device for installing the furnace shell and cooling wall during blast furnace maintenance according to claim 1, characterized in that: It also comprises a hoisting beam (24) and a connecting piece. The hoisting beam (24) is erected on the secondary platform (5) perpendicular to the opening direction of the secondary annular beam (21) and is connected to the secondary annular beam (21) via the connecting piece.

8. The device for installing the furnace shell and cooling wall during blast furnace maintenance according to claim 7, characterized in that: It also includes a double hanging beam (25), the hanging beams (24) are two and are arranged at intervals, and the two ends of the double hanging beam (25) are respectively connected to the hanging beam (24).

9. The device for installing the furnace shell and cooling wall during blast furnace maintenance according to claim 8, characterized in that: A centerline hole (251) is vertically arranged in the middle of the double-jointed suspension beam (25).

10. The device for installing the furnace shell and cooling wall during blast furnace maintenance according to claim 1, characterized in that: It also includes an oblique support member, and the secondary annular beam (21) extends out of the secondary platform (5) and is connected to the secondary platform (5) through the oblique support member.

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